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I’m looking for an experienced cybersecurity / anti-fraud researcher with deep technical knowledge of marketplace security systems, browser fingerprinting, bot detection, behavioral analysis, and Trust & Safety infrastructures.

I want a technical consultation focused on how large marketplaces detect suspicious behavior, link accounts, analyze device/browser fingerprints, evaluate risk scores, and automate moderation systems.

Topics of interest:

* browser & device fingerprinting
* anti-bot systems
* behavioral detection
* proxy/VPN detection
* account linking methodologies
* trust score systems
* AI-based moderation
* fraud detection infrastructure
* marketplace Trust & Safety systems

I’m specifically looking for someone with hands-on technical experience in cybersecurity, fraud prevention, reverse engineering, or large-scale platform security.
Practical real-world knowledge is preferred over generic theory.

We are looking for a person in Nigeria who has an active account with Binance, OKX, Coinbase, Bitstamp, and Kraken, and can reliably collect pricing data throughout the customer journey for cross-border stablecoin use cases.

This project focuses on collecting pricing information at each stage of the journey, including fiat deposit, fiat-to-stablecoin on-ramping, stablecoin conversion, on-chain and off-chain transfers, cross-chain routing where relevant, and fiat off-ramping at the receiving end. We want the data collection to reflect the actual customer experience of moving value internationally through the platform, including the rates, spreads, and fees shown at different points in the process.

Data will be gathered through online account journeys and, where relevant, any additional steps needed to document the full flow.

Main deliverable:
Data entered into our forms, with supporting screenshots.

Main requirements:
Currently live in Nigeria
Have access to a verified account of any of the platforms mentioned
Comfortable documenting platform journeys involving fiat deposits, conversions, transfers, and withdrawals
Good English
Good computer skills
Responsive and adaptable to changing requirements

This job does not require any digital asset or fiat transactions.

We have multiple similar projects and are open to long-term collaboration.

Fixed-price contract.

• Can you please summarize the task and what is required? What is your understanding of the instructions?
• Do you currently live in Nigeria, and can you confirm the city you are in?
• Do you have a verified account in the platform requested in the Job Adv?
• Have you done market research before, especially in finance or payments?
• Have you used international money transfer services before?
• Would you be comfortable taking photos/screenshots of exchange rates and fees as part of the evidence?

Type: Long-term contract, multi-phase build. Open only to solo senior devs

About the Project

Fans.tech is a Web3 creator platform launching on Base L2. Creators launch "clubs" with bonding-curve ClubKeys that fans buy in $FANS (our native ERC-20) to unlock token-gated chats, content, and governance rights. Frontend design and prototype are complete. We need engineering to build the contracts, backend, indexer, and integrations end to end.
Full feature spec, contract architecture, and infrastructure choices are documented and will be shared with shortlisted applicants. This post summarizes the scope so you can self-qualify.

Scope of Work
1. Smart Contracts (Foundry + OpenZeppelin, Base L2)
Ten core contracts to design, implement, test, and deploy:

PlatformToken — $FANS ERC-20, supply model TBD
ClubFactory — deploys a ClubKey per club, maintains registry, emits ClubCreated
ClubKey — bonding-curve buy/sell, supply tracking, $FANS payment, first key free to creator, emits KeyBought / KeySold
CurveLibrary — shared fixed-point math for linear (basePrice + slope × n) and exponential (basePrice × multiplier^n) presets
FeeDistributor — 1.5% fee per trade split between protocol treasury and farmer rewards
GovernanceModule — per-club president voting (vote weight = keys held), moderator assignment
GiftKey — keyholder-to-address transfers with Gift event
FansSwap — ETH ↔ $FANS via Uniswap V3 SwapRouter wrap or custom constant-product AMM, exposes getQuote
LPFarm — ETH/$FANS liquidity pool, LP token mint/burn, share tracking
LPRewardDistributor — accumulates 1.5% FANS-ETH swap fees + 1.5% Club key fees + 12M $FANS linear emission over 12 months; MasterChef-style per-second accrual; claimRewards / pendingRewards

Hard requirements: fixed-point arithmetic (no floats), reentrancy guards on all value-moving functions, atomic trades (price + transfer + fee in one tx), events on every state change for the indexer, upgradeable proxy pattern with timelock on core contracts, full test coverage before mainnet deploy.
2. Backend Services (Node/TypeScript, PostgreSQL, Redis)

Auth Service — JWT + wallet signature (SIWE)
Posts & Feed Service — CRUD, scheduling, bookmarks, paginated home feed with All / Posts / Transactions / Trending / Discover tabs
Social Platform Integration — OAuth 2.0 connect/disconnect for X, Instagram, OnlyFans (OFAPI or link-based), LinkedIn, Farcaster, TikTok; encrypted token storage; refresh management; per-platform publishing adapters
Scheduler Service — cron job polling scheduled_posts, publishing via platform adapters, retry with exponential backoff, BullMQ-backed
Notification Service — Firebase Cloud Messaging for messages, key trades, price milestones, governance events, reward claims, swap completions, scheduled post status
Analytics & Feed Service — trending algorithm (volume × unique buyers, 24h window), global activity feed from indexer, creator stats endpoint, portfolio endpoint with P&L
Chat Service — Socket.io (self-hosted) or Ably, token-gated room access enforced against on-chain key balances
Media Pipeline — upload, resize/transcode per platform requirements, store in S3 or Cloudflare R2

3. Indexer
The Graph subgraph (or custom event listener via Alchemy/QuickNode) covering all ClubKey, FeeDistributor, Governance, GiftKey, FansSwap, LPFarm, and LPRewardDistributor events. Powers feed, leaderboards, portfolio, and trending.
4. AI Agent Creator Framework (Phased)
ERC-8004 Identity Registry + Reputation Registry integration. Three permitted agent models (transparent AI characters, creator-deployed agents, AI-curated index communities) with on-chain identity, reputation scoring, and marketplace badging. V1 ships with Model B only (creator-deployed agents); V2 and V3 add Models A and C.
5. Infrastructure
Base mainnet + Sepolia, Alchemy or QuickNode RPC, PostgreSQL, Redis, Firebase Cloud Messaging, Coinbase Pay on-ramp, S3/R2 media, BullMQ job queue.

Open Design Questions
A senior engineer should expect to weigh in on, not just execute, the following. The spec flags ~20 open decisions including: $FANS supply (fixed vs mintable) and initial allocation, farmer reward recipient (stakers vs keyholders), president voting threshold, moderator storage location, message storage strategy (on-chain history vs off-chain DB), GiftKey fee, supply cap policy, OnlyFans integration approach, swap pool type (Uniswap V3 concentrated vs custom AMM), bridge integration (official Base bridge vs LayerZero), LP reward split exact percentages, and $FANS emission tail policy after 12 months.
Strong opinions, backed by experience, are welcome and expected.

Required Experience

4+ years shipping production Solidity on an EVM L2 (Base, Arbitrum, Optimism, zkSync). Send verified contract addresses.
Foundry, OpenZeppelin, fixed-point math libraries, upgradeable proxies, timelock governance.
Demonstrable experience with at least two of: bonding curves, AMMs / Uniswap V3 integration, staking + emission contracts, ERC-20 + ERC-721 design, MasterChef-style reward distribution.
Production TypeScript backend at scale — Postgres, Redis, BullMQ or equivalent, OAuth flows, indexer integration.
The Graph subgraph development or equivalent custom indexing.
Security awareness — reentrancy, oracle manipulation, MEV, proxy storage collisions, integer overflow in curve math.

Nice to have: prior social-token or creator-economy product experience, ERC-8004 familiarity, OAuth integrations for X / Instagram / TikTok / Farcaster, Socket.io or Ably at scale.

How We'll Work
Phase 0 — Paid Trial. First small milestone (one contract or one backend service) at agreed scope. Used to evaluate code quality, communication, and judgment before committing to the full build.
Phase 1 — Contracts. All core contracts deployed to Base Sepolia with full Foundry test coverage. Optional: third-party audit before mainnet.
Phase 2 — Backend + Indexer. Auth, feed, chat, indexer, notifications. Wired to existing frontend.
Phase 3 — Social Integrations + Scheduler. Platform-by-platform rollout, X first.
Phase 4 — LP Farming, Governance, Agent Framework V1.
Expectations across all phases: clean PRs with descriptive commits, written design docs before any non-trivial contract or service, tests alongside code, async-friendly communication, weekly written status.

• Describe your recent experience with similar projects
• Include a link to your GitHub profile and/or website

We are building a new decentralized platform and are looking for a Lead Blockchain Developer to own smart contract architecture, NFT minting, marketplace logic, and wallet integration on an EVM-compatible chain.

Key Responsibilities

- Design, write, test, and deploy Solidity smart contracts on an EVM-compatible blockchain.
- Implement ERC-721 or ERC-1155 based NFT contracts with custom logic for ownership verification and reward distribution.
- Integrate smart contracts with the backend (Node.js/Express) and frontend (React/Next.js) via Web3.js or Ethers.js.
- Write automated tests (Hardhat/Truffle/Foundry) and deploy to testnet/mainnet.
- Maintain technical documentation for smart contracts and on-chain processes.

Required Qualifications

- 5+ years of blockchain development experience, with 8+ years of development experience.
- Proven experience writing production-grade Solidity smart contracts (ERC-721, ERC-1155, ERC-20).
- Strong knowledge of Hardhat, Truffle, or Foundry for testing and deployment.
- Ability to integrate smart contracts with Node.js backends (REST APIs, event listening).
- Excellent problem-solving and communication skills.

Preferred Qualifications

- Prior work on NFT marketplaces, creator royalty platforms, or collaborative Web3 projects.
- Active contributor to open-source blockchain projects.

• Describe your recent experience with similar projects
• Include a link to your GitHub profile and/or website

Join our team to develop a Web3 fintech platform. We are seeking a skilled developer to build a user-friendly interface and integrate blockchain technology. The role involves creating a seamless user experience and ensuring the platform's security and scalability. If you have a passion for decentralized technologies and a strong understanding of fullstack development, we would love to hear from you.

We are looking for a highly skilled developer to join our project. You will help build and maintain a decentralized application with on-chain logic, user authentication, file handling, and data storage.

This is a long-term collaboration opportunity for a developer comfortable working across smart contracts, backend, and frontend.

Key Responsibilities:
- Design, develop, and deploy smart contracts (Solidity).
- Implement wallet authentication (MetaMask or similar Web3 wallets).
- Build a backend API using Express.js / Node.js for off-chain data.
- Develop transaction handling logic (token transfers, payment recording) between users.
- Create a user dashboard showing activity history, balances, and uploaded content.
- Ensure transparency by recording key actions on-chain.

• Describe your recent experience with similar projects
• Please list any certifications related to this project
• Include a link to your GitHub profile and/or website
• What frameworks have you worked with?

I need a complete, mobile-friendly Shopify store that will help my retail business boost online sales from day one. The site must load quickly, look clean on every device, and guide visitors smoothly from product discovery to secure checkout.

Here’s what I have in mind:
• A modern storefront theme customised with my brand colours, logo, and imagery
• Intuitive navigation and search so shoppers can find items fast
• Compelling product pages with high-resolution photos, variants, and dynamic stock indicators
• Seamless payment and shipping setup (Shopify Payments, PayPal, major carriers)
• Basic SEO, Google Analytics, and Facebook Pixel integrated before launch
• Responsive testing across desktop, tablet, and mobile to catch any design snags

I’ll provide product data and branding assets; you configure, fine-tune, and hand me a store ready to market. Launch isn’t complete until we’ve run through a final checklist together and the live site passes speed and usability checks on both 4G mobile and desktop broadband.

Skills: PHP, Website Design, SEO, Mobile App Development, eCommerce, Google Analytics, HTML, Blockchain, Web Development, DevOps

We are building Pet360 SaaS Platform, the first blockchain-based pet ecosystem in Brazil (160M pets, zero blockchain infrastructure today).

We are adding:

• Pet NFT passports (immutable medical history)
• Vaccine certificate NFTs
• Smart contract adoptions
• Pet insurance on-chain

As we grow this project, we're expanding our team — especially looking for blockchain developers, designers, frontend engineers and full-stack engineers.

This role is fully remote, but please keep in mind that we're looking for someone who can commit to more than 30 hours per week. What truly matters to us is your thinking and how you build.

Compensation ranges from $20 to $60 an hour — and it's negotiable.

This is a contract position, but there is strong potential for long-term collaboration and growth based on performance and how well we work together.

If this sounds like something you might be interested in, I would be happy to share more details with you.

Thanks

Skills: Website Design, Blockchain, Frontend Development, Solidity, Smart Contracts, Nest.js

We are building Pet360 SaaS Platform, the first blockchain-based pet ecosystem in Brazil (160M pets, zero blockchain infrastructure today).

We are adding:

• Pet NFT passports (immutable medical history)
• Vaccine certificate NFTs
• Smart contract adoptions
• Pet insurance on-chain

As we grow this project, we're expanding our team — especially looking for blockchain developers, designers, frontend engineers and full-stack engineers.

This role is fully remote, but please keep in mind that we're looking for someone who can commit to more than 30 hours per week. What truly matters to us is your thinking and how you build.

Compensation ranges from $20 to $60 an hour — and it's negotiable.

This is a contract position, but there is strong potential for long-term collaboration and growth based on performance and how well we work together.

If this sounds like something you might be interested in, I would be happy to share more details with you.

Thanks

Skills: Website Design, Blockchain, Frontend Development, Solidity, Smart Contracts, Nest.js

I need a US-based freelancer to assist with blockchain, AI, frontend, or backend tasks. Deep knowledge in these areas is not required. The ideal candidate will be able to contribute to various projects and collaborate effectively. This is a part-time role with a focus on ongoing work.

The Boston Blockchain Association (BBA) is seeking a qualified freelancer or small agency to execute a website refresh. The current site (bostonblockchain.org) is functional but dated. The core site architecture and navigation will remain intact; this engagement covers design review and refinement, content updates, and front-end implementation.

We’re looking for a well-connected, high-level advisor who has direct relationships (“plugs”) within key platforms across both Web2 and Web3.

Specifically, we’re looking for someone with strong internal or close partner-level connections at:

Meta
TikTok
Phantom
Jupiter
Dexscreener
Meteora

This is not a surface-level networking role. We need someone who already has established, trusted relationships and can help unlock access, fast-track processes, solve platform-level issues, and open doors that are otherwise difficult to reach.

You should have a strong background in Web3, crypto, and blockchain, with a clear understanding of how ecosystems, exchanges, wallets, and discovery platforms operate. Ideally, you’ve worked on token launches, growth campaigns, listings, or partnerships where these relationships played a key role.

What we’re looking for:

Proven access to decision-makers or key operators within the platforms listed above

Ability to facilitate introductions, partnerships, or priority support when needed

Strategic thinking, not just connections. You should be able to advise on how to leverage these relationships for growth
Experience operating in fast-moving crypto environments

Please share:

The platforms where you have direct relationships
The nature of those relationships (without breaching confidentiality)
Relevant experience where you’ve leveraged these connections to drive outcomes

We’re looking to work closely with the right person on both advisory and execution when needed.

We are looking for a person in Dominican Republic who has an active account with Binance, OKX, Coinbase, Bitstamp, and Kraken, and can reliably collect pricing data throughout the customer journey for cross-border stablecoin use cases.

This project focuses on collecting pricing information at each stage of the journey, including fiat deposit, fiat-to-stablecoin on-ramping, stablecoin conversion, on-chain and off-chain transfers, cross-chain routing where relevant, and fiat off-ramping at the receiving end. We want the data collection to reflect the actual customer experience of moving value internationally through the platform, including the rates, spreads, and fees shown at different points in the process.

Data will be gathered through online account journeys and, where relevant, any additional steps needed to document the full flow.

Main deliverable:
Data entered into our forms, with supporting screenshots.

Main requirements:
Currently live in Dominican Republic
Have access to a verified account of any of the platforms mentioned
Comfortable documenting platform journeys involving fiat deposits, conversions, transfers, and withdrawals
Good English
Good computer skills
Responsive and adaptable to changing requirements

This job does not require any digital asset or fiat transactions.

We have multiple similar projects and are open to long-term collaboration.

Fixed-price contract.

• Can you please summarize the task and what is required? What is your understanding of the instructions?
• Do you currently live in Dominican Republic, and can you confirm the city you are in?
• Do you have a verified account in the platform requested in the Job Adv?
• Have you done market research before, especially in finance or payments?
• Have you used international money transfer services before?
• Would you be comfortable taking photos/screenshots of exchange rates and fees as part of the evidence?

About the Project

We’re building a Web3 horse racing platform that combines competitive gameplay, digital ownership, and a real token-driven economy.

Players will be able to own horses, train them, race them, upgrade assets, participate in events, and interact with a larger in-game economy that continues beyond a single race. Think game first, blockchain where it actually improves ownership, incentives, and community participation.

The game itself is being built in Unity.

Alongside the game, we’re building the Web3 infrastructure around it — wallet connectivity, asset ownership, marketplace logic, staking, rewards, and our native token ecosystem.

The token and Web3 layer exist to support long-term engagement and a real in-game economy.

Where Things Stand

We’re already in active development.

- Core game development is underway
- Token architecture is already defined
- Presale platform has been built
- We’re now focused on the staking platform, token utility, wallet flows, and deeper game integration
- Core architecture decisions are still being made, so the right technical leadership matters now

About the Token

The token is designed to support actual platform activity.

It will be used for:

- In-game purchases and upgrades
- Tournament entry and premium events
- Staking and reward distribution
- Player incentives and ecosystem participation
- Future governance as the platform grows

Same philosophy as the product: utility first. If players aren’t using the platform, the token means nothing.

The Role

We’re looking for a strong full-stack developer who’s comfortable moving between game systems, Web3 infrastructure, and modern web applications.

In practice, you’ll be involved in:

- Building and improving the staking platform
- Integrating token logic between web platform and game systems
- Connecting smart contracts with frontend and backend services
- Working with Unity developers on wallet, inventory, asset, and reward flows
- Building APIs, backend services, and data pipelines where needed
- Improving scalability, security, and overall platform architecture
- Helping make technical decisions as the ecosystem grows

Current Stack

Game / Metaverse
- Unity

Web3 / Token Platform
- Ethereum / Base
- Solidity
- React
- Ethers.js

Backend / Full Stack
- Node.js / TypeScript (or equivalent)
- APIs, databases, cloud infrastructure

Who We’re Looking For

- You’ve shipped real products
- Strong full-stack engineering background
- Real experience with Web3 production apps
- Experience integrating smart contracts into frontend/backend systems
- Bonus if you’ve worked on games, virtual economies, NFTs, or Unity integrations
- You understand performance, scalability, security, and product trade-offs
- You’re comfortable in early-stage environments where priorities move fast

Why This Role

You’d be joining at the stage where core systems are still being shaped — game economy, staking mechanics, token utility, player incentives, platform architecture.

A lot of important decisions are still ahead, which means your work will directly shape how this ecosystem grows.

If you like building real products, solving hard technical problems, and creating something players will actually spend time in, let’s talk.

Skills: C# Programming, Unity 3D, Game Development, React.js, Blockchain, Ethereum, Web Development, Smart Contracts, Unity, Web3.js

We are looking for an experienced Tech Lead to architect, build, and scale a next-generation DeFi platform.
You will lead the technical direction of the product, manage a team of blockchain and full-stack engineers, and ensure secure, scalable, and high-performance delivery across smart contracts, backend infrastructure, and frontend applications.

a simple sport betting website. An agent can play games for the public and give out ticket in shop

Hi,

I’m currently looking for a long-term content partner for our trading brand.

We need around 30–40 SEO-optimized articles per month focused on trading-related topics, including:

* forex trading
* prop trading
* futures trading
* trading strategies
* risk management
* market insights

We’re looking for content that is:

* SEO-focused
* well-structured
* optimized for rankings and AI Overviews
* written for traders and beginners
* high quality and research-backed

If you have experience in the trading/finance niche, please share:

* relevant samples
* case studies or ranking results
* your monthly capacity
* pricing structure

Looking forward to learning more about your experience.

Thanks

Position Overview:

We’re looking for an experienced Web3 Developer to join our fully remote team. You’ll be responsible for building end-to-end decentralized applications, from smart contract interactions to responsive frontend user experiences.

In this role, you’ll integrate blockchain protocols, design scalable architectures, and work across the stack using modern frameworks and tools. If you have deep Web3 experience, love working on both frontend challenges, and want to help shape the next generation of decentralized products, this role is for you.

Key Responsibilities:

- Frontend Development: Design and build scalable dApps with integrated modern frontend frameworks (React, Next.js.).
- Web3 Integration:** Interact with EVM-compatible or Layer 1/Layer 2 blockchains using Web3.js, Ethers.js, Solana Web3.js, or other Web3 SDKs.
- Wallet Integration: Support popular Web3 wallets (e.g., MetaMask, Phantom, WalletConnect) and enable smooth, secure login/transaction flows.
- Performance & UX: Optimize full-stack performance and ensure top-tier user experience across platforms.
- Testing & Deployment: Write comprehensive unit and integration tests. Manage environments and CI/CD pipelines for devnet/testnet/mainnet deployments.

Qualifications:

- Experience:
- Proven track record building and deploying Web3 applications across frontend.
- Strong understanding of blockchain architecture, smart contracts, and decentralized protocols.
- Experience integrating with at least one major blockchain (Ethereum, Solana, Polygon, etc.).
- Technical Skills:
- Proficient in JavaScript/TypeScript, React and frameworks like Next.js.
- Familiarity with Web3 libraries like Web3.js, Ethers.js, or Solana Web3.js.
- Comfortable with RESTful APIs, GraphQL, and WebSockets.
- Experience with Git, CI/CD workflows, and agile methodologies.
- Soft Skills:
- Excellent problem-solving and debugging skills.
- Strong communication skills and ability to work autonomously in a remote environment.

What We Offer

- Competitive Compensation: Attractive salary + performance-based bonuses. We pay in USD (or crypto, if you prefer).
- Remote-First : Work from anywhere, but stay connected to our HQ. We offer co-working memberships and an annual team week in US.
- Premium Tech Setup: MacBook Pro (M3 Max) or equivalent Windows/Linux workstation, plus a $1,000 home office allowance.
- Ownership & Autonomy: Lead architectural decisions from day one. No micromanagement.
- Flexible Hours: Core hours 11:00–15:00 GMT-3, otherwise structure your day as you see fit.

Skills: Java, JavaScript, HTML5, Node.js, Blockchain, Frontend Development, GraphQL, Smart Contracts, Next.js, Web3.js

We are 12 years in the finance sector and are looking for a long-term hire for the next 3 - 5 years and beyond. This is a job for someone looking to build a strong career for the future. While knowledge of accounting is beneficial, it is not essential. We are looking for a smart, logical thinker and an experienced database programmer who understands how to efficiently complete assigned tasks while contributing to the overall improvement of the product.

The ideal candidate will be trained on our current systems and provided with strong guidance until such time as they are competent and confident enough to take control of the environment and grow as our business grows in areas of system-to-system integration, data analysis, AI analytics, blockchain (if we think this would enhance our product) and leveraging technological advances as they arise.

Required Skills and Expertise:
1.Strong skills in query optimisation.
2.Proficient knowledge of MySQL Community Edition.
3.Experience working on large datasets.
4.Familiarity with how financial transactions work (a plus).
5.Excellent problem-solving skills.
6.Experience in PowerShell scripting.
7.Ability to create and manage Cron jobs.
8. Ability to design, implement, and maintain:
8.1 Stored Procedures
8.2 User-defined Functions
8.3 Database Triggers
8.4 Views for abstraction and reporting
9.Knowledge or experience with Angular and Node.js (a plus).
10.Ability to prioritise and manage tasks based on urgency.


Application Requirements:
Please provide:
Your CV.
Compensation & Commitment
Role: Full-time (40 hours/week).

To demonstrate strong attention to detail, please begin your cover letter with the word “Credebt” and briefly mention one database system or data-driven platform you have worked with in the past (e.g., MySQL).

• Describe your recent experience with similar projects

About the Project

We’re building a Web3 horse racing platform that combines competitive gameplay, digital ownership, and a real token-driven economy.

Players will be able to own horses, train them, race them, upgrade assets, participate in events, and interact with a larger in-game economy that continues beyond a single race. Think game first, blockchain where it actually improves ownership, incentives, and community participation.

The game itself is being built in Unity.

Alongside the game, we’re building the Web3 infrastructure around it — wallet connectivity, asset ownership, marketplace logic, staking, rewards, and our native token ecosystem.

The token and Web3 layer exist to support long-term engagement and a real in-game economy.

Where Things Stand

We’re already in active development.

- Core game development is underway
- Token architecture is already defined
- Presale platform has been built
- We’re now focused on the staking platform, token utility, wallet flows, and deeper game integration
- Core architecture decisions are still being made, so the right technical leadership matters now

About the Token

The token is designed to support actual platform activity.

It will be used for:

- In-game purchases and upgrades
- Tournament entry and premium events
- Staking and reward distribution
- Player incentives and ecosystem participation
- Future governance as the platform grows

Same philosophy as the product: utility first. If players aren’t using the platform, the token means nothing.

The Role

We’re looking for a strong full-stack developer who’s comfortable moving between game systems, Web3 infrastructure, and modern web applications.

In practice, you’ll be involved in:

- Building and improving the staking platform
- Integrating token logic between web platform and game systems
- Connecting smart contracts with frontend and backend services
- Working with Unity developers on wallet, inventory, asset, and reward flows
- Building APIs, backend services, and data pipelines where needed
- Improving scalability, security, and overall platform architecture
- Helping make technical decisions as the ecosystem grows

Current Stack

Game / Metaverse
- Unity

Web3 / Token Platform
- Ethereum / Base
- Solidity
- React
- Ethers.js

Backend / Full Stack
- Node.js / TypeScript (or equivalent)
- APIs, databases, cloud infrastructure

Who We’re Looking For

- You’ve shipped real products
- Strong full-stack engineering background
- Real experience with Web3 production apps
- Experience integrating smart contracts into frontend/backend systems
- Bonus if you’ve worked on games, virtual economies, NFTs, or Unity integrations
- You understand performance, scalability, security, and product trade-offs
- You’re comfortable in early-stage environments where priorities move fast

Why This Role

You’d be joining at the stage where core systems are still being shaped — game economy, staking mechanics, token utility, player incentives, platform architecture.

A lot of important decisions are still ahead, which means your work will directly shape how this ecosystem grows.

If you like building real products, solving hard technical problems, and creating something players will actually spend time in, let’s talk.

Operations & Admin Support Assistant (Fiji)

About Us

We are a regional service coordination team supporting international digital operations in Fiji. We focus on operations management, service verification, and administrative coordination.

Description

We are seeking a detail-oriented Operations Support Assistant based in Fiji. The role involves administrative coordination, verifying completion logs, and providing local operational support to ensure smooth project delivery within our digital operations team.

Responsibilities
•Coordinate and verify operational milestones.
•Maintain accurate digital records and administrative documentation.
•Provide daily progress reports through Upwork.
•Ensure all tasks meet high standards of quality and professionalism.

Requirements
•Must currently reside in Fiji.
•Strong reliability and ability to meet deadlines.
•Ability to manage sensitive information professionally.
•Fluent in written and spoken English.
•Basic understanding of digital platforms or blockchain technology is an advantage.

How to Apply

Please submit a basic resume

Looking for a skilled game developer to create an RPG crypto game. The project involves designing gameplay mechanics and integrating blockchain technology. Ideal candidates should have experience in game development, blockchain integration, and creating engaging user experiences.

Skills: C Programming, Java, Android, Game Design, Game Development

DCL MINING – Complete Project Explanation 1. What it is
DCL Mining is a ready-to-launch Telegram tap-to-earn game (also works in any mobile browser). It’s a white-label clone of the Hamster Kombat / Notcoin model, but with one big difference: you earn real BNB from day one, not from a future token.

Players open your Telegram bot, tap a coin to mine "DCL", and pay BNB to mine 2x, 5x, 10x, or 20x faster. Every payment is verified automatically on the Binance Smart Chain (BSC) — no manual checking.
2. How the game works (user flow)
Step 1 – Start: User clicks your Telegram bot link → game opens instantly (no download).
Step 2 – Tap: Each tap = 0.001 DCL (base). Energy starts at 1,000 and recharges +1 every 2 seconds.
Step 3 – Earn offline: Tap Bot mines for up to 8 hours while the app is closed.
Step 4 – Upgrade: Spend earned DCL inside the game to buy:
• Multitap (+0.001 DCL per tap per level) • Energy Limit (up to 3,500) • Recharge Speed (2x faster) • Tap Bot Level (more offline hours)
Step 5 – Boost (your income): User pays BNB for speed: • x2 Boost = 0.0128 BNB → 0.002 DCL/tap • x5 Boost = 0.032 BNB → 0.005 DCL/tap (most popular) • x10 Boost = 0.064 BNB → 0.010 DCL/tap • x20 Boost = 0.128 BNB → 0.020 DCL/tap
User sends exact BNB to your wallet, pastes the TX hash, the app checks BSC in 3 seconds, and boost activates automatically.

Step 6 – Social loop:
• Referral: +5 DCL for you and your friend • Daily check-in, Follow X/Twitter, LinkedIn, YouTube tasks • Leaderboard Top 50 – prizes for #1 to #100 3. Monetization model (why buyers pay $65k)
You don’t wait for ads. You earn directly:
• If 1,000 users buy x5 boost once = 1,000 × 0.032 BNB = 32 BNB (∼$19,200 at $600/BNB) • Repeat buyers upgrade to x10/x20. Top games see 15-25% conversion.
This is why the resale value is $58k–$82k — buyer recovers cost in 2,000–3,000 paying users.
4. Admin panel (full control)
Hidden URL with password. You see:
• Dashboard: total users, total DCL mined, total BNB received, active boosts • Withdrawals: approve/reject user cashouts • Players: search by username, see balance, energy, referrals • Boost TX Log: every BNB payment with TX hash, wallet, status (verified/failed) • Leaderboard control: set prize amounts
No coding needed to manage.
5. Technical architecture (buyer-friendly) • Frontend: Single HTML5/CSS/JS file, mobile-first, dark theme, Tailwind style. Runs inside Telegram WebApp and normal browser. • Backend: Complete backend support included with your code — handles user profiles, balances, energy timers, referrals, and real-time updates. • Blockchain: Direct BSC RPC verification. No third-party payment gateway fees. You control the receiving wallet. • Security: All game logic checked server-side. Users cannot cheat tap speed or energy. RLS (row-level security) prevents data leaks. • Scalability: Tested for 50,000+ users. Backend handles realtime leaderboards without lag. 6. What buyer receives 1. Full source code (frontend + backend) 2. Database structure and functions 3. Admin panel access 4. Deployment guide for Telegram BotFather + hosting 5. Wallet setup guide (how to change to your BNB address) 6. 30 days bug-fix support 7. White-label license – change name, logo, colors, token name (DCL → your brand) 7. Why it’s better than building from scratch • Time: Build from zero = 4–5 months, $30k–$70k dev cost. Yours = launch in 24 hours. • Risk: You already solved the hardest part — auto BNB verification. Most freelancers fail here. • Proven UI: Screenshots show real users, real boosts, real leaderboard. Buyers trust working product, not mockups. 8. Ideal buyer • Crypto influencer in Dubai/India wanting own tap game • Telegram channel owner (50k+ subs) needing monetization • Gaming studio in Europe/USA entering Web3 • Marketing agency selling white-label to clients

Skills: JavaScript, Mobile App Development, Android, Unity 3D, Game Development, Blockchain, Web Development, Smart Contracts, Web3.js, Cryptocurrency

We need a blockchain developer to implement a feature that stores, updates, and retrieves metadata for minted educational materials. The metadata includes the IPFS URL, mint date, and a view count for each asset. This data must be surfaced through a backend API and displayed on the frontend.

Period: 5 days

Scope of work:

When a user mints an NFT, the system should automatically capture the IPFS metadata URL (returned from Pinata or similar), the timestamp of the mint transaction, and initialize a view counter at zero. This metadata must be persisted in a database (MongoDB preferred) and kept in sync with on‑chain ownership where relevant.

You will build a backend API endpoint that returns the metadata for a given token ID, including the current view count. The frontend will call this API to display the IPFS link, mint date, and view count. Additionally, the API must support incrementing the view count each time the material is viewed on the marketplace or detail page.

Blockchain & backend requirements:

- Capture the mint transaction block timestamp (not the local server time) to ensure accuracy.
- Store the IPFS URL exactly as returned from the pinning service.
- The view count is off‑chain only (no gas cost) and should be updated via an authenticated or public API call.
- If a material is transferred to a new owner, the metadata (including view count) should remain attached to the same token ID.
- Provide a one‑time backfill script for already minted tokens (read on‑chain tokenURI and block timestamp from the contract).

Tech stack (must match our existing environment):

- EVM‑compatible chain (Celo or any Ethereum testnet)
- Node.js + Express backend
- MongoDB
- Next.js frontend (React)

Deliverables:

- Database schema updates for the new fields.
- API endpoints: GET "/api/metadata/:tokenId" and POST "/api/metadata/:tokenId/view" (increment).
- Frontend integration to display IPFS URL, mint date, and view count.
- Backfill script for existing NFTs.
- Brief documentation of the implementation.

Join our team as a Lead Blockchain Engineer to develop and maintain blockchain solutions. You will lead a team of engineers, collaborate with cross-functional teams, and ensure the security and scalability of our blockchain infrastructure. This role requires strong technical leadership and problem-solving skills.

1. Smart CT Scan Analyzer

An AI system that analyzes lung CT scan images and detects possible lung cancer signs early.

Main Features
Upload CT scan or X-ray images
AI detects lung nodules
Cancer risk prediction
Heatmap highlighting suspicious areas
Doctor dashboard
Patient history tracking
PDF medical report generation
Technologies
Frontend: Vue.js / React
Backend: Node.js or Python Flask
AI Model: TensorFlow / PyTorch
Database: MySQL / PostgreSQL
Image Processing: OpenCV
AI Models
CNN (Convolutional Neural Network)
ResNet50
YOLO for object detection
Users
Doctors
Radiologists
Hospitals
Patients
2. AI + IoT Lung Monitoring System

A smart healthcare platform connected to wearable devices.

Features
Real-time breathing monitoring
Oxygen level tracking
AI predicts lung disease risk
Emergency alerts
Mobile app notifications
Patient monitoring dashboard
Hardware
ESP32
Pulse Oximeter Sensor
Temperature Sensor
AI Functions
Predict worsening symptoms
Detect abnormal breathing patterns
Risk scoring
3. Cloud-Based Lung Cancer Prediction Platform

A hospital management + AI diagnosis platform.

Modules
Patient Management
Appointment Booking
AI Diagnosis
Lab Result Upload
Doctor Recommendation
Treatment Tracking
Special AI Features
Predict cancer stage
Suggest possible treatments
Survival rate estimation
Drug recommendation support
4. AI Chat Assistant for Lung Cancer Patients

An intelligent assistant helping patients understand symptoms and treatment.

Features
Symptom checker
AI chatbot
Medicine reminders
Treatment education
Doctor communication
Extra
Voice support
Multiple languages
WhatsApp integration
5. Advanced Real-World System (Best for Final Year Project)
System Name

LungAI Pro

Full Modules
Patient Side
Registration/Login
Upload scans
View AI results
Book appointments
Payment system
Doctor Side
Review AI predictions
Add notes
Manage patients
Generate reports
Admin Side
Manage hospitals
Manage doctors
Analytics dashboard
AI training management
AI Workflow
CT Scan Image
↓
Preprocessing
↓
AI Model Analysis
↓
Tumor Detection
↓
Cancer Classification
↓
Generate Diagnostic Report
Database Tables Idea
patients
id
name
email
phone
gender
date_of_birth
scans
id
patient_id
scan_image
scan_type
uploaded_at
ai_results
id
scan_id
prediction
confidence_score
cancer_stage
doctors
id
name
specialization
hospital
appointments
id
patient_id
doctor_id
appointment_date
status
Advanced AI Features
Possible Detection Types
Benign vs Malignant tumor
Lung nodule segmentation
Cancer stage classification
Smoking risk analysis
Security Features
JWT Authentication
Role-based access
Encrypted medical records
HIPAA-style privacy protection
Architecture Idea
Frontend (Vue/React)
↓
REST API Backend
↓
AI Microservice
↓
Database + Cloud Storage
Best Tech Stack Combination
Option 1 (Recommended)
Vue.js
Node.js Express
Python Flask AI Service
MySQL
TensorFlow
Option 2
Laravel
Python AI API
PostgreSQL
React
Future Improvements
AI voice diagnosis assistant
Blockchain medical records
Integration with hospital systems
Real-time telemedicine
Good Final Year Project Title

“Development of an AI-Powered Lung Cancer Diagnostic and Prediction System Using Deep Learning”

Or

“Deep Learning-Based Lung Cancer Detection System Using CT Scan Images”

Skills: Java, Python, Machine Learning (ML), MySQL, PostgreSQL, Image Processing, OpenCV, Deep Learning

Description
Project Goal:
I need a professional developer to build a custom smart contract (program) on the Solana blockchain.

Required Tasks:

Write the smart contract logic using Rust and the Anchor framework.

Implement efficient account structures and secure state management.

Ensure the code is optimized for the Solana runtime.

Provide unit tests and deployment scripts for Devnet.

Technical Requirements:

Deep expertise in Rust and Anchor.

Understanding of Solana’s account model, PDAs, and CPI (Cross-Program Invocations).

Experience with SPL tokens and Solana CLI.

Ability to deliver clean, documented, and production-ready code.

Deliverables:

Complete source code repository.

Deployment instructions.

Brief technical documentation.

Next Steps:

Copy the Title and paste it into the field on your screen.

Click Next to reach the Description box and paste the text above.

When you reach the Skills section, type and select: Solana, Rust, Smart Contracts,

I’m putting together a series of concise, hands-on learning guides that walk readers through Artificial Intelligence, Blockchain, and Cloud Computing. Each guide should be written (or recorded, if you prefer video) by someone who already works at an advanced level in that field and can translate complex concepts into clear, actionable steps.

Scope
• Three stand-alone guides—one per topic—covering fundamentals, real-world applications, and a mini project or demo that readers can complete on their own.
• Practical focus: code snippets, architecture diagrams, or workflow screenshots where relevant.
• Tone: friendly but authoritative, suitable for professionals looking to upskill quickly.

Acceptance criteria
1. Depth matches senior-level understanding while remaining accessible to motivated learners.
2. Each guide includes at least one end-to-end example project with explanations of tools and decisions.
3. All deliverables turned in within one month of contract start.

If this aligns with your expertise and schedule, let’s talk details and outline the milestones right away.

Skills: Cloud Computing, User Interface / IA, Machine Learning (ML), UX / User Experience, Artificial Intelligence, Blockchain, Digital Marketing, Web Development, Data Analytics, AI Model Development

Blockchain Architect / Senior Blockchain Engineer
Location: Thiruvananthapuram / Kochi

Experience: 5–10 Years

Employment Type: Contract – 4 to 6 Months Project

Work Mode: Hybrid (2–3 Days Work from Office)

Budget: ₹1.2 Lakhs to ₹1.5 Lakhs Per Month

About the Role:
We are hiring experienced Blockchain professionals for an urgent contract opportunity with one of the enterprise-level clients. We are looking for candidates with strong expertise in Blockchain fundamentals, Blockchain architecture, Ethereum ecosystem, and solutioning capabilities.

The ideal candidate should have strong technical expertise along with the ability to guide teams, mentor junior developers/interns, and drive best practices in Blockchain development.

Main Skills Required:
Blockchain Fundamentals
Blockchain Architecture
Ethereum
Solution Architecture
Distributed Ledger Technology
Technical Mentoring
Strong Coding Fundamentals

Key Responsibilities:
Design and contribute to Blockchain-based solutions and architectures
Guide development teams and interns on Blockchain best practices
Participate in technical discussions and solutioning activities
Support Blockchain application development and architecture reviews
Ensure scalable and secure Blockchain implementations
Work closely with cross-functional teams and stakeholders

Required Qualifications
5–10 years of overall IT experience
Minimum 5+ years of relevant Blockchain experience
Strong understanding of Blockchain architecture and Ethereum ecosystem
Strong analytical and problem-solving skills
Experience in mentoring teams or junior developers
Good communication and stakeholder management skills

Preferred Candidate Profile:
Immediate joiners or candidates who can join start to work within 1–2 weeks
Candidates with solutioning and architecture exposure
Candidates comfortable working in hybrid mode from Kochi or Trivandrum

Skills: Cryptography, Agile Development, Blockchain, Ethereum, Solidity, Smart Contracts, Hyperledger

Preciso de um aplicativo que efetivamente gere USDT Flash de forma constante, sem quedas ou erros que possam comprometer as transações. O foco absoluto é a geração rápida de USDT Flash; toda a arquitetura deve girar em torno disso.

Exijo um grau de segurança intermediário: autenticação sólida, criptografia de dados sensíveis e processos de validação que me deem tranquilidade sem travar a performance. Caso você já tenha soluções próprias de proteção de chaves ou uso de carteiras multisig, melhor ainda, mas não quero que a camada de defesa sacrifique a velocidade de criação dos tokens.

Integração direta com carteiras USDT (ERC-20 ou TRC-20) e a possibilidade de monitorar o saldo em tempo real serão diferenciais importantes, embora o requisito indispensável continue sendo a emissão confiável dos fundos Flash.

Entrego acesso às APIs necessárias e um ambiente de testes; espero como entrega final o executável ou código-fonte funcional, documentação básica de uso e um breve guia de implantação.

Skills: JavaScript, Adobe Flash, HTML5, ActionScript, Blockchain, Security, API Development, Cryptocurrency

Job Description:

We need a full‑stack developer (or small team) to build a working, production‑ready demo of a single NFT claim dApp. The demo is fully scoped – no guesswork. You will deliver a live frontend + deployed smart contract on Sepolia testnet that matches exactly the user stories and acceptance criteria in the attached spec.

Core requirements:

- Smart Contract (ERC‑721)
– Name: “Demo Airdrop NFT”, Symbol: “DEMO”
– Total supply = 100, max 1 per wallet
– Public claim function (no whitelist, no token checks)
– Functions: `claim()`, `totalSupply()`, `claimedCount()`, `hasClaimed(address)`, `remainingSupply()`
– Deployed on Ethereum Sepolia testnet

- Frontend (React + TypeScript + ethers.js / wagmi)
– Connect MetaMask, show truncated address, disconnect
– Network detection: only Sepolia allowed, with one‑click switch
– Display campaign: name, image (placeholder is fine), total supply, remaining supply
– Eligibility: always “Eligible: Yes” (public campaign)
– Claim button: triggers MetaMask transaction, loading state, success modal with Etherscan link
– Prevent double claims (button disabled + “Already claimed”)
– Handle supply exhaustion (“Sold Out”)
– Transaction status feedback (before, during, success, failure)

- Minimal backend / API (optional but useful)
– Only needed to serve campaign info + claim status (can be a simple JSON API or even static config if frontend reads contract directly – your choice, but must match the spec’s `/api/*` endpoints)

- Demo must include:
– Working claim flow from wallet connect to success
– All acceptance criteria from US‑01 to US‑08
– README with setup + deploy instructions

Out of scope (explicitly):
No admin dashboard, no merkle tree, no email, no gasless, no database persistence, no authentication, no multiple campaigns.

Deliverables by end of this month:
- GitHub repository (frontend + smart contract + minimal backend if any)
- Contract deployed on Sepolia (address provided)
- Live demo URL (Vercel, Netlify, or similar)
- README matching the template in the spec

You must have:
- Proven experience with React, ethers.js/v6 or wagmi, Solidity, Hardhat
- Deployed at least one ERC‑721 claim dApp on testnet before
- Ability to follow a detailed spec exactly (no over‑engineering)