Linux System Administrator - Freelance

About Artemys

Artemys is a human-sized company with over 30 years of experience, specializing in digital transformation across various domains including Systems, Data, and Networks/Security. We are dedicated to showing our appreciation for our employees daily, with a strong emphasis on human connection. Our core values are conviviality, proximity, and listening, ensuring everyone's ideas and contributions are valued. Artemys Paris, our oldest entity located in the 10th arrondissement, boasts 36 years of expertise in system infrastructures and supports companies, primarily in the Ile-de-France region, with their digital transformation. We have built lasting relationships with demanding major clients across diverse sectors, recognized for our technical excellence and human values, making us a key player in Infrastructures, Cloud, and Modern Workplace solutions.

Your Mission

In a critical production environment, you will act as an experienced Linux Administrator, specializing in on-premise S3 storage platforms. This role requires a strong understanding of system administration in high-availability contexts.

Your Responsibilities

• Advanced Linux Administration: Manage, configure, maintain, and troubleshoot Linux servers hosting S3 storage solutions.
• Version Upgrades: Perform upgrades, notably on RHEL 9, ensuring continuity of service.
• OS Patching Automation: Implement automation strategies for patch deployment and updates.
• Supervision & Performance: Monitor performance, analyze metrics, and identify optimization opportunities.
• Incident Management: Diagnose, investigate, and resolve infrastructure incidents.
• On-Call Duty: Participate in an on-call rotation to ensure service continuity.

The Environment

• Systems: Linux (RHEL 9)
• Storage: S3 On-Premise (object)
• Automation: Scripting (Shell / Python)
• Supervision: Monitoring & performance tools
• Context: Critical production environment (RUN)

Candidate Profile

• At least 5 years of experience in systems administration, ideally in a production environment.
• Experience in critical and demanding contexts (RUN, high availability, service continuity constraints).
• Comfortable in large account environments with service quality and reliability challenges.
• Structured and methodical approach to incident management and complex problem-solving.
• Ability to analyze, take a step back, and propose improvements.
• Autonomous yet collaborative, appreciating teamwork.
• Good professional English level (written and oral communication).

Our Hiring Process

Our process is simple and clear:

• HR Interview: Discuss your motivations and alignment with our values.
• Operational Interview: Your profile will be presented to the client's referent for a discussion to validate your fit with the needs.
• Mission Proposal: If everything aligns, we will propose your CV to our client.

Remuneration & Mission Details

• Status: Independent / Freelance
• Daily Rate: €380 - €400 (based on expertise)
• Location: Charenton-le-Pont (94)
• Start Date: July 1, 2026
• Duration: Long-term mission
• Environment: Critical production / S3 on-premise storage

Welcome to the Artemys Adventure

At Artemys, every talent counts. We are committed to responding to all applications within 72 hours and are dedicated to creating an inclusive environment where everyone can thrive, regardless of age, origin, identity, religion, or orientation. All our positions are open to people with disabilities.

Key skills/competency

Linux System Administrator, RHEL 9, S3 Storage, On-Premise Storage, Shell Scripting, Python Scripting, Incident Management, Performance Monitoring, Systems Administration, Automation