Linux Systems Engineer, Fintech

Location: Athens, Attica, Greece

Department: Technology & Innovation

Workplace: hybrid

Description

Optasia is a fully enabled B2B2X financial technology platform covering scoring, financial decisioning, disbursement and collection. We are committed to enabling financial inclusion for all. We are changing the world our way.

Since company’s inception, over a decade ago, we have grown to become a global leader in the Fintech fields, constantly expanding and adding new solutions, offerings, and untapped monetization opportunities for all our partners and clients.

As member of the Systems Engineering team in Optasia, your primary objective is to ensure the stability, security, and smooth operation of all Linux-based systems by administering core platforms, supporting critical services, and maintaining consistent performance across production and staging environments.

What you will do

• Administer and maintain Linux systems (Red Hat and Debian) across production and staging environments.
• Perform regular patching, system updates, and security hardening.
• Manage and monitor system performance using Nagios, Grafana, and related tools.
• Support and maintain applications including Passbolt, DNS, FreeIPA, Radius, Jenkins, and Red Hat Satellite.
• Handle incident management, troubleshooting, and root cause analysis to ensure system reliability and uptime.
• Participate in operations & maintenance tasks and system improvement initiatives.
• Track and manage licenses, End of Support, and End of Life for Linux assets and software.
• Collaborate with cross-functional teams to support infrastructure and authentication services.
• Maintain accurate documentation for configurations, changes, and operational procedures.

What you will bring

• 3-5 years of hands-on experience as a Linux Systems Engineer or Administrator.
• Strong knowledge of Red Hat Enterprise Linux and Debian administration.
• Experience with FreeIPA, DNS, and Red Hat Satellite.
• Familiarity with Nagios, Grafana, and Radius.
• Solid understanding of system patching, incident management, and O&M processes.
• Scripting or automation skills (Bash, Python, Ansible).
• Good documentation, communication, and collaboration skills.

Why you should apply

What we offer:
💸 Competitive remuneration package
🏝 Extra day off on your birthday
💰 Performance-based bonus scheme
📲 💻 All the tech gear you need to work smart
Optasia’s Perks:
🎌 Be a part of a multicultural working environment
🎯 Meet a very unique and promising business and industry
🌌 🌠 Gain insights for tomorrow market’s foreground

Optasia’s Values 🌟

#1 Drive to Thrive: Fully dedicated to evolving. We welcome all challenges and learning opportunities.
#2 Customer-First Mindset: We go above and beyond to meet our partners’ and clients’ expectations.
#3 Bridge the Gap: Knowledge is shared, information is exchanged and every opinion counts.
#4 Go-Getter Spirit: We are results oriented. We identify any shortcomings that hold us back and step up to do what’s needed.
#5 Together we will do it: We are committed to supporting one another and to understanding and respecting different perspectives, as we aim to reach our common goals.