Linux Systems Engineer, Fintech

Optasia· Technology & Innovation
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📍 Athens, Attica, Greece

About this role

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.

 

Frequently Asked Questions

Is the salary disclosed for the Linux Systems Engineer, Fintech position at Optasia?
The salary for this Linux Systems Engineer, Fintech role at Optasia is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Linux Systems Engineer, Fintech position at Optasia located?
This Linux Systems Engineer, Fintech role at Optasia is based in Athens, Attica, Greece. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Linux Systems Engineer, Fintech at Optasia belong to?
This Linux Systems Engineer, Fintech position is part of the Technology & Innovation department at Optasia. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Linux Systems Engineer, Fintech position at Optasia?
Click the "Apply Now" button on this page. You will be redirected to Optasia's official application portal hosted on workable where you can submit your application directly.
When was the Linux Systems Engineer, Fintech job at Optasia posted?
This Linux Systems Engineer, Fintech position at Optasia was posted on Nov 14, 2025. Apply as soon as possible — early applications are often reviewed first.
Linux Systems Engineer, Fintech
Optasia
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