React Freelance Jobs

I need an experienced React Native developer to create a productivity tool specifically designed for Android. The app should be tailored to meet the essential requirements of a doctor.

Key features may include:
- Task Management: A system for tracking patient tasks, reminders and daily duties.
- Calendar Integration: Syncing with a calendar to manage appointments, deadlines and schedules.
- Note-taking: A built-in feature for jotting down observations, patient information or reminders.

Skills and Experience Needed:
- Proficiency in React Native and Android development
- Experience in developing productivity tools or similar applications
- Understanding of or experience in the medical field would be a plus
- Excellent communication skills for understanding specific doctor requirements.

Please only apply if you can provide a portfolio of similar projects.

Skills: PHP, Java, Mobile App Development, Android, PhoneGap

Suntem in cautarea unui front-end developer specializat pe React, NextJS, TypeScript.

Este vorba de un proiect in care responsabilitatile vor fi:
- adaptarea paginilor pentru varianta mobila conform design-ului
- crearea de pagini noi
- rezolvare bug-uri

Daca esti o persoana avand cunostinte pe aceste tehnologii, lasa-ne un mesaj si vom discuta mai multe detalii.

Looking for a skilled Full Stack Web Developer for a long-term relationship to create professional websites for escort business. The primary goal of this website is to serve as a platform for users to find escorts and for escorts to promote their services.

Key Features:
- 100% Responsive website design. Multiple devices mainly in mobile
- Search and Filter Options**: Users should be able to easily search and filter listings based on different criteria. Zip/post or cities searches is a must. Admin dmin could insert some profiles on results
- Profile Pages: Each escort should have a detailed profile with photos, descriptions, categories. Escort can login anytime to manage their profile, update profile details, change photo, pay for invoices. Escort Page Upgrades. - Escort verification (mail,..)
- Adult website disclaimer
- Profile likes & statistics
-Verification and Security Features: We need measures to ensure the safety and accuracy of the profiles on the site. Some information is hidden until you click
- Export/Import Profiles (bulk process): I'd like to enable the ability to export and import profiles using categories. Imported profiles will be visible little by little in the following days
- Admin Panel (admin area): An easy-to-use and comprehensive admin panel is essential for me to manage the website effectively. It should allow me to monitor users, ads, transactions, and overall performance. Managing all escort profiles.
- Multilanguage website
- Payment Gateway Integration: The website should have a secure payment system that supports different payment methods to facilitate transactions from escorts.
- Advertisement System: I would like a system where both paid and free ads can be posted. User membership packages and account upgrades to

Design:
- The overall design should be elegant and professional.
- No Wordpress website. React is preferable.

Ideal Skills:
- Full stack developer creating user-friendly and secure websites.
- Use of GitLab (provided by me)is a must.
- Experience with directory website development, particularly in the escort industry

Skills: Website Design, Cloud Computing, HTML, React.js, GitLab

I have a template from tailwindui. I am looking for somebody to add this into my project.

All code is provided, so this just needs adding into the existing project.

Existing project is made up of Laravel, Inertia, React.

The template is: (link removed)

Project-Based / Part-Time

We are looking for Full Stack developers with expertise in React Native and Node.js for our newly established mobile app development company. In this position, you will be involved in developing applications from scratch and collaborating with us in the maintenance process after the application is launched.

Requirements:

-React Native - Expo: Experienced in mobile app development.
-Nativewind - TailwindCSS: Proficient in style management and UI development.
-React Query: Knowledgeable in data management and server state synchronization.
-Zustand: Skilled in using state management tools.
-ExpressJS: Experienced in backend development, API creation, and management.
-Supabase: Proficient in database management and backend service integrations.
-Redis: Knowledgeable in data caching and fast data access.

Responsibilities:

-Developing mobile applications from scratch.
-Creating and managing backend services.
-Managing maintenance and update processes after the application is launched.
-Preparing technical documentation.
-Coordinating with the project manager and other team members.

We are looking for an intermediate-level developer who can quickly understand projects requirements and deliver high-quality code. Please provide us your portfolio.
Upon successful completion of the first project, we can negotiate higher rates and long-term contracts for future projects.

We are looking for a skilled mobile app developer to build an app that will serve as a scorecard for assessing residential properties as potential investments for flipping. The app should provide users with an intuitive interface to input property details, calculate key metrics, and generate a comprehensive scorecard report. The main focus of the app is to evaluate the feasibility of properties based on various factors such as location, market trends, renovation costs, and potential resale value.

In the app we present questions with preset answers. Based on the answers a score is calculated using points and weight for each question. We store the correct location of the property and photos. A login is required. Output on screen or through a share option (whatsapp, outlook etc) or by creating a PDF file.

Required skills:
- Proficiency in mobile app development frameworks (e.g., React Native, Flutter)
- Experience in designing user-friendly interfaces
- Strong knowledge of database management and data retrieval
- Familiarity with property investment concepts

This is a medium-sized project with an estimated duration of 1 to 2 months. We are seeking an intermediate-level developer who has prior experience in building similar mobile apps and possesses a solid understanding of property investment analysis. If you have a passion for real estate and want to contribute to the success of property flippers, we would love to hear from you!

If you also speak Spanish we consider that a bonus.

Looking for a backend developer with exceptional Python and React skills to help me with my git hub repositories. At the moment it is a small issue therefore it is a small project. I will share the repo once I find your proposal suitable.
Your expertise includes:
Reasoning in Natural Language Processing (NLP)
Backend Prompt Engineering
Data Cleansing - Preprocessing
Conversation Handler
Fine-tuning
Vector Embeddings
Embedding Models
Claude
OpenAI
Next.js
PostgreSQL
Facebook AI Similarity Search (Faiss)
AWS
In addition to the above, you possess top-level mathematical skills and are comfortable analyzing and understanding others' code quickly and efficiently (yes our code is clean).
We need passionate AI engineer with proven experience in building modern RAG applications for Conversational AI (Chatbot) systems.

Other attributes we are looking for:
Reliable, trustworthy, available!

We are seeking a highly skilled Front End Developer with UX/UI experience to join our team for property management software development. The ideal candidate will have a strong understanding of modern front-end technologies and be able to create user-friendly interfaces that provide a seamless user experience. As a Front End Developer, you will be responsible for translating design wireframes into functional and interactive web applications. You will collaborate with our design and development teams to ensure that the final product meets our clients' needs and expectations.

Skills required:
- Proficiency in HTML, CSS, and JavaScript
- Experience with responsive design
- Familiarity with front-end frameworks (e.g., React, Angular)
- Knowledge of UI/UX best practices
- Strong problem-solving skills
- Excellent communication and collaboration abilities

I'm looking to convert my existing vanilla JavaScript single file into a React application. The primary focus of this conversion should be on the user interface elements, as these will need to be prioritized in the transition. At this stage, the project is purely vanilla JS with no additional libraries or frameworks in use.

Key Requirements:
- Expertise in both vanilla JavaScript and React
- Strong understanding of user interface development
- Ability to potentially design and implement new UI elements as needed

While I am currently unsure if new UI elements will need to be added, the ideal candidate will have the skills and creativity to do so if necessary. The project is a good opportunity for a React developer with a strong UI focus.

Here is the demonstration video.
https://www.loom.com/share/6baa9e98831a42af931f185e91de8403

Skills: JavaScript, CSS, HTML5, HTML, React.js

We are looking for a skilled React developer to build a first demo for a video editing application (and integrate it in an existing frontend Git). This project is ideal for freelancers seeking to showcase their skills on a short-term task, with the potential to transition into a more permanent full-time role.

We have created a backend API that provides a list of urls to different MP4 clips (stored on an S3 bucket). The task is to create a basic (client side) video editing interface, where users can load these different mp4 clips onto a timeline, and compile them into a single MP4 video (that can be uploaded to the backend for storage on the S3 bucket)

Please provide examples of your previous work, particularly projects involving video or media if available, as this experience is highly valued. Ideally, we are looking for someone who has experience with React DnD and VideoJs libraries.


Key Tasks:

Timeline Editing Features:
- Get the list of MP4 clips from the backend API, and load them onto a timeline.
- Enable users to rearrange clips on the timeline by dragging them. Clips can be moved forward or backward to change their order.
- Allow users to trim clips by setting in and out points, effectively cutting out unwanted sections.
- Provide an option to remove clips from the timeline if they are no longer needed.

Video Preview and Playback
- Include a video player (using VideoJs or a similar library) to preview individual clips, as well as the compiled video on the timeline.
- Add basic playback controls (play, pause, seek) and a timeline scrubber for navigation.

Compilation and File Export
- Implement functionality to compile the arranged and edited clips into a single MP4 file.
- Provide options to export the compiled video with different resolutions (or file formats).
- Allow users to upload the final compiled video to the backend for storage on the S3 bucket.

Polite Note: overcharging or unrealistic time frames will not be tolerated. I have 20 years experience in this field, i am very aware the price and timeframe this job should take.

Please send me a message for the full brief.

modify a pre-purchased front-end template to align with our supplied artwork, including basic style sheet changes. The project involves integrating this front-end with a pre-purchased back-end and customizing it to match. Expertise in React and Java for an admin panel is required. Additionally, you will need to integrate three API functions and set up and test the application on our server.

I have a Figma design file for a mobile app. You can check the link below to view the designs.

Figma Password:
rabid-dahlia-scout-sway
Figma Link:
https://www.figma.com/design/cWwePx4fESMa7ehOaQjU8T/POS-Cashier-App?node-id=1122-7822&t=ZX46kHQBUkZTUYN0-1

The app is part of a larger system for Point of Sale service (POS). The Figma file includes the designs for the Cashier App only. The designs are done for a tablet screen but the app should be designed to be responsive for all mobile devices.

The requirement is to design the UI and limited functionality without connecting the app to any backend or API. Mock data should be used in all pages. Other than designing all the pages and functionality seen in Figma, the following is required:

- Use component based design for easy reusability.
- Define a theme for easy manipulation of design such as font and colors.
- Reusable dialog and loading components.
- State management used only for user authentication (Mock user), Layout (Standard or Scan) and Theme (Light or Dark).
- All screens must be responsive and designed for both light and dark themes.
- All UI/UX elements should work correctly such as pop-ups, dialogs, form fields (switch, date picker…) and gestures such as swiping.
- The app should be localized to English and Arabic languages with full right-to-left and left-to-right support. Arabic translations will be provided in full.
- Integration with the camera to scan barcodes.
- No integration with printers is required.
- All third party packages must be safe and approved before use.

IMPORTANT: ALL DESIGNS MUST MATCH FIGMA DESIGNS EXACTLLY.

Please make sure you check the Figma file and read the requirements above carefully before submitting your proposal. Project is high priority and needs to be completed in a few days. Awarded freelancer can then continue work on other milestones to connect the app to API and add extra functionality.

We are looking for an experienced MERN Stack Developer to help us fix critical bugs in our web application. If you have a strong background in MongoDB, Express.js, React, Node.js, and thrive in a fast-paced environment, we want to hear from you!

*********************************************Read carefully**********************************
We're looking for a skilled developer to create a comprehensive multi-vendor e-commerce mobile application from scratch. The app will serve as a platform for multiple vendors to sell their products to customers.
Developer should open accept for 2 times of changes in code of functions freely:

Key Features:
- Perform of e-commerce functionality
- All CRAD and authentication should preform
- Panel for register vendors and upload there products
- App should accept Ads
- User registration and login by OTP phone number and password, and JWT
- Vendor panel
- Vendors can target followed users and make discount users can receive notifications
- users can do items rate, like and save later
- Products filters
- Product listing, remove and search
- Delivery parts should added like Uber
- Push notification for vender and driver for new order
- Order tracking
- Other more can be added on the way.
- Developer responsible for designing fast and scalable and high value users interacting
- Backend Superbase or Firebase.
- UI Flatter or React Native
- Basic DevOps.
All these requirement should preform in details.

************************* Provide us your proposal and what will do ? ****************************

> Your application should demonstrate your experience in developing similar apps. Please provide details on your past e-commerce projects, particularly those involving multi-vendor functionality.

>This project has a tight deadline of 25 days, so prompt communication and efficient work are vital all code save on owner GitHub. Pay first portion of cost after finish 10% of project.

>30% of total cost project will given after finish the project full function and work on 25th day. if not finished on time the day will take of the 30% by accept the project you are accept the conditions contract and by the law response to complete the project.

Thank you for your interesting on our project and meet you soon.

Skills: JavaScript, Mobile App Development, iPhone, Android

I need an expert frontend Developer for multiple ongoing projects, you must be skilled in react, angular and vue js,
(at least 2)
Each project will have its own project cost
To be considered for this role, I have an assessment to test your skill.
Requirements
#1 You must have portfolio of projects done with proof (Screenshot of Github)
#2. Must have pixel perfect frontend skills
#3 Must have experience with state management
#3 Must have experience with API Integration, RESTful Services:
#4 A bit of CI-CD pipelines

Do you enjoy creating and innovating in the tech industry? In a delivery environment that is iterative, inclusive, collaborative, fast-paced, and collaborative, do you love addressing complicated business problems? Becoming a part of our company means joining a large community of makers, breakers, doers, and disruptors who like finding practical solutions to practical issues and satisfying practical client requirements. Passionate about fusing emerging technologies with data, we are looking for back-end software engineers. Driving a significant transition within our company.

What You’ll Do:
* Build the next generation of the Machine Learning Platform which hosts business-critical Machine Learning models for the company
* Create custom-built SDKs, work with Data Scientists to onboard new ML models, identify customer pain points, and design solutions to eliminate these pain points
* Contribute to the improvement of Platform Observability to enable early detection of platform outages and failures
* Lead a portfolio of diverse technology projects and a team of developers with deep experience in distributed microservices, and full stack systems
* Collaborate with product managers, and deliver robust cloud-based solutions that drive powerful experiences to help millions of Americans achieve financial empowerment
* Utilize programming languages like Python, SQL, Node, Go, Open Source RDBMS and NoSQL databases, React, TypeScript, Container Orchestration services including Docker and Kubernetes, and a variety of AWS tools and services

Basic Qualifications:
* Bachelor’s Degree
* At least 6 years of professional software engineering experience (Internship experience does not apply)
* At least 1 year experience with cloud computing (AWS, Microsoft Azure, Google Cloud)

Preferred Qualifications:
* Master's Degree
* 7+ years of experience in at least one of the following: Python, Go, or Node.js
* 2+ years of experience with AWS, GCP, Azure, or another cloud service
* 4+ years of experience in open source frameworks
* 2+ years of experience in Agile practices

We need a 3D Model of an Invoice which is to be used on our website. We will use react-three-js to present the object and thus the final file should be compatible with three js.

The invoice (invoice finance) goes through 4 different stages on our platform:

1. Initiated. 2. Sanctioned, 3. Disbursed, 4. Closed. The 3d asset will have these 4 variants representing these states of the finance.

We are seeking a talented Full Stack Developer to join our team. As a Full Stack Developer, you will be responsible for designing and implementing user interfaces for our web applications. Your main focus will be on developing high-quality code using HTML, CSS, and JavaScript, Java, React. You should have a strong understanding of UI/UX principles and be able to translate design concepts into code. The ideal candidate should be proficient in front end frameworks such as React or Angular. Attention to detail and a passion for creating visually appealing and user-friendly interfaces are essential.

I'm looking for a skilled React Native developer to assist me APIs for Wellness Minimum Viable Product application. The project involves integrating 8 APIs and managing data locally. The App user interface is already programmed and I can share the build if needed.

Ideal skills and experience:
- Proficient in React Native and Typescript with a proven track record of successful projects
- Excellent communication and collaboration skills

This project is ideal for a developer who is keen on working on a project from its initial stages and is passionate about creating user-friendly mobile applications.

Skills: Android, Typescript, iOS Development, React Native

Position Overview:
We are seeking a highly skilled and experienced Technical Interviewer and Project Manager to lead the hiring process for front-end and back-end developers. The ideal candidate will be responsible for conducting technical interviews, assessing candidate skills, and ensuring that hired developers are working efficiently and delivering high-quality work. This role also involves project management tasks to ensure that development milestones are met on time and within budget.

Key Responsibilities:

• Conduct technical interviews for front-end and back-end developer candidates.
• Assess candidate skills and experience to ensure a strong technical fit for the roles.
• Manage the onboarding process for new hires, ensuring they understand project requirements and expectations.
• Monitor and verify the work of developers to ensure they are meeting deadlines and producing high-quality code.
• Track project progress and manage timelines to ensure development milestones are achieved.
• Review timesheets and work logs to prevent overcharging and ensure proper utilization of hours.
• Provide regular updates and reports to the management team on project status and developer performance.
• Serve as a point of contact for developers, addressing any issues or concerns they may have.

Qualifications:

• Bachelor’s degree in Computer Science, Information Technology, or a related field (or equivalent experience).
• Proven experience as a software developer, technical lead, or similar role with a strong understanding of both front-end and back-end development.
• Experience conducting technical interviews and assessing developer skills.
• Strong project management skills, with experience using project management tools (e.g., Trello, Asana, Jira).
• Excellent communication and interpersonal skills.
• Ability to work independently and manage multiple tasks simultaneously.
• Detail-oriented with strong organizational skills.

Preferred Qualifications:

• Experience in a startup environment.
• Familiarity with the technologies and frameworks used in our project (React.js, React Native, RESTful APIs, etc.).
• Previous experience in managing remote teams.

We are seeking a talented Front-End Developer to create a user-friendly and visually appealing front-end for our website, which will serve as a platform for searching books and articles in various databases. The ideal candidate should have a solid understanding of Next.js and React SSR to ensure optimal performance and smooth user experience. This is an exciting opportunity to contribute to the development of a cutting-edge search service.

Responsibilities:
- Collaborate with the back-end development team to implement the front-end design
- Develop responsive and accessible web pages
- Optimize the website for speed and performance

Requirements:
- Proficiency in Next.js and React SSR
- Strong knowledge of HTML, CSS, and JavaScript
- Experience with front-end testing and debugging
- Attention to detail and ability to deliver high-quality work

We are looking for an intermediate-level developer to join our team on a medium-sized project, with an estimated duration of 1 to 3 months.

I have a chat app. There are some bugs. Majorly look n feel bugs.

I want a good experienced mobile app developer who can fix this issues for me.

I have source on Github. so i want someone is familiar with Github.

We are seeking a skilled and dedicated Full-Stack Developer to lead the development of our innovative web application, Gimmel. Gimmel is designed to be an essential tool for educators, providing easy access to course materials and teaching resources. This role is crucial in bringing our vision to life and offers the potential for a long-term position within our team.

Responsibilities:

• Lead the development of the Gimmel web application, focusing on both front-end and back-end functionalities.
• Utilize expertise in React and Next.js to create an intuitive and user-friendly interface.
• (Optional) Contribute to future mobile app development using React Native.
• Collaborate with the team to identify and implement the most suitable backend technologies.
• Develop a robust content network allowing users to upload, explore, share, and save educational content.
• Maintain high standards of code quality, attention to detail, and proactive problem-solving.

Qualifications:

• Proven proficiency in React and Next.js.
• Comprehensive experience in full-stack development with strong knowledge of both front-end and back-end technologies.
• (Preferred) Experience with React Native for mobile app development.
• Fluent in English with excellent communication skills.
• Exceptional attention to detail and a commitment to delivering high-quality work.
• Proactive, responsible, and forward-thinking approach to project management.
• Ability to integrate seamlessly into our team and work collaboratively.

Benefits:

• Opportunity to play a pivotal role in an innovative educational technology project.
• Work within a collaborative and supportive team environment.
• Potential for the role to transition from a 1-3 month contract to a full-time position based on performance.
• Flexible working conditions and the chance to take ownership of your work.

Application Process:

Interested candidates are invited to submit their applications, including:

• A brief introduction outlining your relevant experience.
• Examples of previous web applications developed, especially those using React and Next.js.
• Any experience with React Native.
• Your recommendations for suitable backend technologies for a content network like Gimmel.
• Reasons why you would be an excellent fit for our team.

We look forward to reviewing your applications and discussing how you can contribute to our project.

Update function for password not working and wont auto show in website due to some localstorage issues, need help with state management without use of localstorage and without use of redux of any other tools

We need someone who can get the screens from figma and turn it into react native code

Key emphasis on

Making reusable code
Understanding of useEffect, redux toolkit, useMemo, etc
Clean easy to read code
Able to test their work on different screen sizes
Call end points

CSS
React native
JavaScript
Redux toolkit
Graph QL
Jest is a plus
Typescript is a plus

Also want to be able to do iOS and android notifications, state management, pagination, and performance improvements.

We are looking for a skilled Full Stack Developer to join our team for an exciting project. As a Full Stack Developer, you will be responsible for both the frontend and backend development. You should have a strong understanding of web technologies and be proficient in programming languages such as HTML, CSS, JavaScript, and Python. The ideal candidate should be able to work independently and collaborate with a team to deliver high-quality solutions. If you are a problem-solver with a passion for coding, this opportunity is perfect for you!

Skills required:
- Frontend development (HTML, CSS, JavaScript)
- Backend development (Python, Ruby, Java)
- Database management (MySQL, MongoDB)
- Web frameworks (React, Angular, Django)
- Version control (Git)
- Problem-solving and debugging

This is a medium-sized project with an estimated duration of 3 to 6 months. We are looking for an intermediate level developer who can hit the ground running and contribute to the project from day one.

We are looking for a skilled React developer to work on a small project. The ideal candidate will have experience with React and be able to deliver high-quality, maintainable code. Specific project details will be provided to the selected candidate.

Requirements:
Proven experience with React development.
Strong understanding of JavaScript, HTML, and CSS.
Experience with state management libraries (e.g., Redux, Context API).
Familiarity with version control systems like Git.
Ability to write clean, maintainable, and well-documented code.
Good communication skills and ability to work independently

We look forward to working with a talented developer who can help us deliver a high-quality product.

We are seeking a skilled Mobile App Developer who will be responsible for developing and maintaining high-quality mobile applications.
The ideal candidate will have a strong understanding of the app development platform, a passion for mobile technologies, and a track record of delivering robust and user-friendly applications.


Key Responsibilities:
Design, develop, and maintain mobile applications for iOS and/or Android platforms.
Collaborate with cross-functional teams to define, design, and ship new features.
Work on bug fixing and improving application performance.
Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
Ensure the best possible performance, quality, and responsiveness of the application.
Participate in code reviews to maintain code quality and share knowledge with team members.


Requirements:

Proven experience as a Mobile App Developer.
Strong knowledge of Swift/Objective-C (for iOS) or Java/Kotlin (for Android).
Experience with cross-platform development frameworks like React Native or Flutter is a plus.
Familiarity with RESTful APIs to connect mobile applications to back-end services.
Knowledge of UI/UX standards and guidelines.
Understanding of Agile development methodologies.
Excellent problem-solving skills and attention to detail.
Strong communication and teamwork abilities.

We are seeking a skilled React developer to complete the development of our marketing website. The project is in its final stages and requires someone who can quickly integrate the remaining features and polish the user interface. The ideal candidate should have prior experience working with React and be proficient in HTML, CSS, and JavaScript. Attention to detail, excellent problem-solving skills, and the ability to work independently are essential. This is a great opportunity to showcase your expertise and contribute to the success of our marketing efforts.

Skills required:
- React
- HTML
- CSS
- JavaScript
- Problem-solving

Size: Small
Duration: Under 1 month
Expertise: Intermediate

I am looking for a developer to further develop a chatbot website, using Next.js.

Scope of work:
1. App page UI / API work. (No backend)
2. Landing page integration (please check https://stru.ai, there will be edits, but I expect it to look / feel similar to https://screen.studio)
3. Google Analytics Integration
4. Clean code, fast website (no unnecessary api calls), efficient, fully responsive mobile / tablet /desktop.
5. Good attitude, and genuinely cares about this project.

App page:

I have already made a version 1:
Please check https://app.stru.ai to make sure you know how I want the app to work.

See Figma: https://www.figma.com/design/SSeGV1oiObi7sqauv20FWm/ChatPDF?node-id=0-1&t=iX2njt4R3GM9sd6m-1

I have made the backend APIs, so you will not need to do anything in the backend. I will share postman and specific instructions on how to use.

Note that the pdf on the right will appear when document search is enabled and you will need to highlight certain parts of the text (from backend response). Chat response will need to use react-markdown and some styling.

Home page is a basic landing page, I will provide source code, you need to make sure auth works with google (provided) and able to integrate with the app page. You can check out https://stru.ai to see how it looks like.

The end goal is to deploy on Netlify with the updated website. I expect you can push it to vercel for me to quickly give comments / overview your you to fix.

I need this as soon as possible, not more than 5 days. Note that there may be some changes as its being developed for me to see.

Please use the word "Apple" in your proposal so i know you have read it all. I will provide source code if you are able to give a lower bid. Considering I'm giving source code and no backend work.
Thank you.

Skills: JavaScript, HTML, React.js, Next.js, Tailwind CSS