{"id":2258530,"url":"https://alion.io/job/gft-technologies-senior-linux-engineer","title":"Senior Linux Engineer","company":{"id":51689,"name":"GFT Technologies","domain":"gft.com","url":"https://alion.io/company/gft-technologies","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":null},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Kraków, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":15800,"max":24300,"currency":"PLN","period":"month","gross":true,"usd_annual":74604},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Tomcat","optional":false},{"name":"CI/CD","optional":false},{"name":"Jenkins","optional":false},{"name":"Linux","optional":false},{"name":"Red Hat","optional":false},{"name":"Ansible","optional":true},{"name":"COBOL","optional":true},{"name":"Configuration Management","optional":true},{"name":"IBM MQ","optional":true},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-10-10T02:00:00Z","employer_posted_date":"2026-10-10","last_verified_at":"2026-10-11T09:55:56Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Type of contract: Employment contract\nSalary range: 15800 - 24300 PLN gross\nWhat will you do?\nYou will support and maintain Linux-based environments, ensuring their stability, security, and performance. Working closely with cross-functional teams, you will contribute to vulnerability remediation, infrastructure automation, and operational improvements. As part of an international technology environment, you will help deliver reliable infrastructure solutions, support middleware platforms, and maintain high operational standards across the organization.\nYour tasks\nManage and maintain enterprise Linux environments\nIdentify, analyze and remediate security vulnerabilities\nImplement and support infrastructure automation solutions\nDevelop and maintain Jenkins pipelines and automation workflows\nAdminister and troubleshoot Tomcat and JBoss Web Server environments\nPerform system monitoring, performance tuning and root cause analysis\nSupport application deployments and release activities\nCollaborate with development and infrastructure teams to resolve production issues\nEnsure compliance with security and operational requirements\nCreate and maintain technical documentation\nYour skills\nStrong hands-on experience with Linux administration\nExperience with system security, hardening and vulnerability remediation\nHands-on experience with Jenkins and automation tools\nExperience with shell scripting\nExperience with CI/CD pipelines and deployment processes\nKnowledge of Tomcat or Red Hat JBoss Web Server (JWS)\nExperience with system monitoring and troubleshooting\nUnderstanding of networking and operating system fundamentals\nStrong analytical and problem-solving skills\nGood communication skills and experience working in international teams\nNice to have\nKnowledge of IBM WebSphere Liberty (WLP)\nKnowledge of IBM MQ\nKnowledge of IBM App Connect Enterprise (ACE)\nExperience in the banking or financial services sector\nExperience with containerization technologies\nExperience with cloud platforms\nExperience with Ansible or other configuration management tools\nWe offer\nHybrid work in our client's office (Kraków) 8 days a month\nWorking in a highly experienced and dedicated team\nBenefit package tailored to your needs (medical, sport, lunch subsidy, life insurance, etc.)\nOnline training and 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