{"id":3961315,"url":"https://alion.io/job/mindbox-senior-software-developer","title":"Senior Software Developer","company":{"id":53456,"name":"Mindbox","domain":"mindboxgroup.com","url":"https://alion.io/company/mindbox","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Traffit","truth_index":{"grade":"A","score":86,"open_postings":54,"ghost_share":0,"stale_share":0.537,"repost_share":0.037,"time_to_fill_p50_days":55,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Agile","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude Code","optional":false},{"name":"Copilot","optional":false},{"name":"pySpark","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"Docker","optional":true},{"name":"Kubernetes","optional":true},{"name":"Spark","optional":true}],"status":"live","first_seen_at":"2026-11-09T09:11:17Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-09T11:54:40Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"At Mindboxwe connect top IT talents with technology projects for leading enterprises across Europe.\nWe are looking for a highly skilled Senior Software Developer to join a team responsible for developing and maintaining applications used within Product Control - including Fair Value Adjustments (FVA), Independent Price Verification (IPV), and regulatory Stress Testing.\nThe team is focused on extending existing tooling and building new solutions as part of a modernisation initiative that moves from legacy applications to a microservices-based platform with modular UI, message queues and workflow orchestration.\nThis role is ideal for an experienced developer who enjoys building scalable, secure, and high-performing systems while actively participating in code reviews, testing, and continuous improvement.\nSounds like your kind of challenge?\nResponsibilities\nFlexible cooperation model \nHybrid work setup - remote days available depending on the client’s arrangements - 2 days a week from the office in Kraków\nCollaborative team culture - work alongside experienced professionals eager to share knowledge \nContinuous development - access to training platforms and growth opportunities \nComprehensive benefits - including Interpolska Health Care, Multisport card, Warta Insurance, and more \n High quality equipment - laptop and essential software provided \nRequirements\nDesign, develop and implement new features within a microservice-based environment.\nMaintain and support live processes and applications in production.\nWrite clean, efficient and secure code following best software engineering practices.\nUse modern AI coding assistants (e.g., Claude Code, GitHub Copilot) to enhance productivity.\nConduct code reviews and proactively suggest optimizations and security improvements.\nDefine test plans and testing strategies in collaboration with QA engineers.\nParticipate in design sessions and project planning meetings to share technical input.\nEngage with multiple stakeholder groups to clarify requirements and ensure alignment.\nWork effectively within Agile POD teams to deliver stories and tasks.\nProvide rotational support for production tickets and incidents.\nConfigure and manage changes in CI/CD tools to support deployment pipelines.\nNote:Detailed project information will be shared during the recruitment process.\nBenefits\nExcellent knowledge of C# and .NET, with demonstrated hands-on experience building enterprise applications.\nProficiency in SQL and familiarity with non-relational databases.\nWorking knowledge of Python and preferably PySpark for data-driven processing.\nStrong understanding of software design patterns, best coding practices and technical documentation.\nAwareness of AI concepts - prompting, limitations, responsible use and safety considerations.\nExcellent collaboration and communication skills (verbal and written).\nExperience in financial or risk systems is advantageous - especially Product Control or Valuation domains (Fair Value Adjustments, IPV, Bid-Offer processes).\nNice to Have\nFamiliarity with big-data and distributed processing frameworks (e.g., Spark).\nExperience with cloud-based solutions and CI/CD deployment pipelines.\nKnowledge of containerisation and infrastructure automation tools (Docker, Kubernetes).\nExposure to financial regulatory and reporting systems.\nJoining this project you’llbecome part of Mindbox - a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. 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