Linux System Administration Freelance Jobs

We are a forward-thinking tech company committed to ensuring the highest levels of security for our systems and data. We are currently seeking an experienced Ubuntu 22.04 Disk Encryption Specialist to enhance our data protection strategy by implementing disk encryption using Trusted Platform Module (TPM) for both our OS and secondary drives.

Job Description:

Responsibilities:

Disk Encryption Implementation:

Configure and implement disk encryption on Ubuntu 22.04 for the OS drive using TPM.
Set up and manage encryption for secondary drives, which may include single drives, ZFS pools, or RAID configurations (RAID 0/1).
TPM Integration:

Ensure seamless integration of TPM with disk encryption to enhance security.
Develop and document processes for TPM-backed encryption setup and recovery.
Secondary Drive Management:

Configure and maintain ZFS or RAID (0/1) setups, ensuring encrypted volumes are correctly managed.
Implement best practices for ZFS or RAID configurations with encrypted drives.
System Security:

Conduct thorough testing of the encryption setup to ensure data integrity and system stability.
Monitor and maintain the security of the encrypted drives, including regular audits and updates.
Documentation and Training:

Create detailed documentation for the encryption processes, including setup, maintenance, and recovery procedures.
Train internal IT staff on managing and maintaining the encrypted systems.
Qualifications:

Technical Expertise:

Proven experience with Ubuntu 22.04 and disk encryption technologies.
Strong knowledge of TPM and its integration with disk encryption.
Proficiency in managing ZFS and RAID configurations (RAID 0/1).
Skills:

Expertise in Linux system administration and security.
Experience with LUKS, dm-crypt, or similar encryption tools.
Familiarity with system recovery procedures for encrypted drives.
Soft Skills:

Excellent problem-solving and troubleshooting skills.
Strong documentation and communication abilities.
Ability to work independently and as part of a team.
Preferred Qualifications:

Previous experience in a similar role with a focus on disk encryption and TPM.
Certifications in Linux system administration and security (e.g., LPIC, CompTIA Linux+).
Experience with automated deployment and management tools (e.g., Ansible, Puppet).

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I'm seeking a skilled professional with expertise in Linux system administration and VPN setup to help me install and configure OpenVPN on my Linux server.

Key Requirements:
- Installation of OpenVPN software on a Linux server through SSH access.
- Configuration of the OpenVPN server.
- Provision of a download link for the Windows OpenVPN client.
- Detailed instructions on adding and removing user accounts on the VPN.
- Tailored guide for user account management, suitable for an intermediate skill level.

Ideal Skills:
- Proficient in Linux system administration.
- Experienced with OpenVPN software setup and configuration.
- Strong knowledge of SSH access and user account management.
- Excellent communication skills to provide clear and detailed instructions.
- Ability to customize user guides based on skill levels.

START YOUR BID WITH 'CAN START NOW'

Skills: System Admin, Linux, Ubuntu, Debian, Network Administration

We are looking for a skilled developer who can help us build a web app using Go binary on Linux. The project involves creating a robust and scalable web application with a focus on performance and security. The ideal candidate should have experience in Go programming language and be proficient in Linux system administration. Strong problem-solving skills and attention to detail are essential for this role. The successful candidate will work closely with our team to design and develop the web app, ensuring its smooth functionality and user-friendly interface.

We need the following installed on a VPS and configured as per the guide on Github.

We also need it locked down to our IP range which we will also provide.

We will give you the VPS root login as well as the IMAP details required.

Please provide your hourly rate or fixed cost to get this done. We're looking at getting it done ASAP.

https://github.com/gutmensch/docker-dmarc-report?tab=readme-ov-file

Skills: Linux, Linux System Administration, Docker

Seeking a highly skilled and experienced Bulk Email Campaign Manager and Linux System Administrator to join our team (potentially for long term). This individual will be responsible for managing the Green Arrow Engine/Studio on our dedicated server, ensuring the highest level of performance and security. The ideal candidate will have a strong background in Linux system administration, email campaign management, and a deep understanding of email deliverability and server management.

Responsibilities:
Linux System Administration: Maintain and administer a dedicated Linux server, ensuring all operating systems and Green Arrow Engine/Studio software are up to date. Perform regular checks on hardware for possible failures, and monitor the server to prevent critical issues before they occur.

Email Server Configuration: Configure domains with proper records (SPF, DKIM, MX, feedback loops) and add them to the email server to ensure optimal deliverability and compliance.

IP and Domain Management: Warm up domains/IPs through services like Instantly, manage IP rotation and load balancing using Green Arrow Engine Virtual MTA, and adjust IP throttling as necessary to maintain maximum deliverability and low bounce rates.

Campaign Management: Schedule and manage email campaigns, adhering to specific send schedules per domain to optimize reach and engagement.

Suppression List Management: Manage the suppression/unsubscribe list daily, ensuring compliance with email marketing regulations and best practices.

Additional Responsibilities: Undertake other related administrative tasks as required, contributing to the overall efficiency and success of our email marketing efforts.

Requirements:
Proven experience in Linux system administration and email campaign management.
Familiarity with Green Arrow Engine/Studio and its Virtual MTA component. Links to learn more about Green Arrow Engine/Studio and Virtual MTA: [https://www.greenarrowemail.com/docs/greenarrow-engine/].
Strong understanding of email authentication methods (SPF, DKIM, MX, feedback loops) and experience in configuring these records.
Experience in IP warming, rotation, and load balancing techniques.
Ability to monitor and adjust IP throttle settings to ensure optimal email deliverability.
Proficiency in managing email suppression/unsubscribe lists.
Excellent problem-solving skills and the ability to anticipate potential issues before they become critical.
Strong communication skills and the ability to work independently.

Skills: Linux System Administration, Email Deliverability, Email Campaign Setup, PHP, System Administration, HTML, DNS, Campaign Monitor