Linux Systems Engineer, Fintech

16 hours ago

Athens, Attica, Greece Optasia Full time €40,000 - €80,000 per year

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.

  • Linux Systems Engineer, Fintech

    16 hours ago

    Athens, Attica, Greece Optasia Full time €40,000 - €80,000 per year

    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...

  • Senior Linux System Engineer

    2 weeks ago

    Athens, Attica, Greece Uni Systems Full time €40,000 - €80,000 per year

    We are continuously growing and we are looking for a Senior Linux System Engineer to join our UniQue CIET team, part of our Professional Services Department.This role requires a proactive individual who can troubleshoot and resolve issues, automate routine tasks, and implement security best practices. You will collaborate with other IT professionals,...

  • Senior Linux System Engineer

    3 days ago

    Athens, Attica, Greece Uni Systems Full time €55,000 - €90,000 per year

    We are continuously growing and we are looking for aSenior Linux System Engineerto join our UniQue CIET team, part of our Professional Services Department.This role requires a proactive individual who can troubleshoot and resolve issues, automate routine tasks, and implement security best practices. You will collaborate with other IT professionals,...

  • Linux Edge Systems Engineer

    1 week ago

    Athens, Attica, Greece SMPnet Full time €40,000 - €80,000 per year

    About SMPnet:SMPnet is at the forefront of developing innovative solutions for power grid management. Our team is looking for a Linux Edge Systems Engineer to develop and maintain high-performance smart grid applications.Role Overview:‍We are seeking a talented and motivated Linux Edge System Engineer with 1–3 years of experience in Linux-based...

  • Linux Systems Engineer

    3 days ago

    Athens, Attica, Greece Power Factors Full time €40,000 - €80,000 per year

    ABOUT POWER FACTORS Power Factors is a software and solutions provider leading the next generation of clean energy with Unity, one of the most widely deployed renewable energy management suites (REMS) in the market. With over 300 GW of wind, solar, and energy storage assets managed worldwide across 600+ customers and 18,000 sites, Power Factors manages 25%...

  • Linux System Engineer

    1 week ago

    Athens, Attica, Greece OPAP Full time €40,000 - €80,000 per year

    We are #OPAPWe are the leading gaming company in Greece and one of the most respected in the industry worldwide, with 67 years of history. Our vision is to provide best in class entertainment across retail & online in a safe & responsible way, while generating sustainable value to all stakeholders & giving back to society. Customer centricity, digital...

  • System Engineer

    1 week ago

    Athens, Attica, Greece Sword Group Full time €25,000 - €45,000 per year

    Sword Services Greece S.A.is seeking to recruit energetic individuals to join our team in Greece as aSystem Engineer. The successful candidate will work in a multinational environment on a multitude of tasks supporting our business in developing web applications. The company is currently expanding its activities in Greece offering an optimum career...

  • System Engineer

    1 week ago

    Athens, Attica, Greece Sword Services Greece S.A. Full time €25,000 - €40,000 per year

    Sword Services Greece S.A. is seeking to recruit energetic individuals to join our team in Greece as a System Engineer. The successful candidate will work in a multinational environment on a multitude of tasks supporting our business in developing web applications. The company is currently expanding its activities in Greece offering an optimum career...

  • Linux Devices Software Engineer

    1 week ago

    Athens, Attica, Greece Canonical - Jobs Full time €80,000 - €120,000 per year

    This role is one of our general tracks. Apply here for all engineering teams at Canonical who work on low-level system technology on autonomous devices across all seniority levels.We hire careful and conscientious engineers who appreciate the challenge of memory, performance, battery and connectivity constrained code that has to work every time in an...

  • Linux Engineering Manager

    1 week ago

    Athens, Attica, Greece Canonical - Jobs Full time €80,000 - €120,000 per year

    Lead an engineering team that partners with the Linux engineers of a major silicon company, and works across the full Linux stack from kernel to GUI, to optimise Ubuntu, the world's most widely used Linux desktop and server, for the latest silicon.The role is a fast-paced, problem-solving role that's challenging yet very exciting. The right candidate must be...