{"id":43309,"url":"https://alion.io/job/optasia-linux-systems-engineer-fintech","title":"Linux Systems Engineer, Fintech","company":{"id":9066,"name":"Optasia","domain":"optasia.com","url":"https://alion.io/company/optasia","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":95,"open_postings":9,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":106,"computed_at":"2026-11-06T05:58:05Z"}},"role":"DevOps","role_family":"DevOps","seniority":"middle","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Athens, Greece"],"countries":["GR"],"hiring_countries":["GR"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"Bash","optional":false},{"name":"Debian","optional":false},{"name":"DNS","optional":false},{"name":"Grafana","optional":false},{"name":"Incident Management","optional":false},{"name":"Jenkins","optional":false},{"name":"Linux","optional":false},{"name":"Nagios","optional":false},{"name":"Python","optional":false},{"name":"Red Hat","optional":false}],"status":"live","first_seen_at":"2026-11-04T14:55:29Z","employer_posted_date":"2026-11-04","last_verified_at":"2026-11-06T06:34:46Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":1},"description":"Optasia is a real-time financial intelligence company. We build precision intelligence that unlocks financial opportunity at scale, running millions of automated credit decisions every day across high-growth markets where formal credit data is limited. Our AI-powered platform turns permitted behavioural data and real-time signals into precise, responsible credit decisions. Embedded within the systems of telcos, banks, digital wallets and other partners, it helps them extend relevant financial services to more people while maintaining strong portfolio control and opens profitable new segments that were previously out of reach. This is how Optasia turns potential into financial progress, responsibly and at scale.\nAs 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.\nWhat you will do\nAdminister and maintain Linux systems (Red Hat and Debian) across production and staging environments.\nPerform regular patching, system updates, and security hardening.\nManage and monitor system performance using Nagios, Grafana, and related tools.\nSupport and maintain applications including Passbolt, DNS, FreeIPA, Radius, Jenkins, and Red Hat Satellite.\nHandle incident management, troubleshooting, and root cause analysis to ensure system reliability and uptime.\nParticipate in operations & maintenance tasks and system improvement initiatives.\nTrack and manage licenses, End of Support, and End of Life for Linux assets and software.\nCollaborate with cross-functional teams to support infrastructure and authentication services.\nMaintain accurate documentation for configurations, changes, and operational procedures.\nWhat you will bring\n3-5 years of hands-on experience as a Linux Systems Engineer or Administrator.\nStrong knowledge of Red Hat Enterprise Linux and Debian administration.\nExperience with FreeIPA, DNS, and Red Hat Satellite.\nFamiliarity with Nagios, Grafana, and Radius.\nSolid understanding of system patching, incident management, and O&M processes.\nScripting or automation skills (Bash, Python, Ansible).\nGood documentation, communication, and collaboration skills.\nWhy you should apply\nWhat we offer:\nWork from anywhere policy (90-day per year)\nCompetitive remuneration package\nExtra day off on your birthday\nPerformance-based bonus scheme\nAll the tech gear you need to work 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