{"id":1907614,"url":"https://alion.io/job/optiveum-senior-net-fullstack-developer","title":"Senior .NET Fullstack Developer","company":{"id":685848,"name":"Optiveum","domain":"optiveum.com","url":"https://alion.io/company/optiveum","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":{"min":null,"max":36,"currency":"EUR","period":"hour","gross":null,"usd_annual":82000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"GitHub Actions","optional":false},{"name":"Oracle","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-05T09:50:41Z","employer_posted_date":"2026-10-05","last_verified_at":"2026-10-09T23:21:29Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Senior .NET Fullstack Developer\nAbout the role:\nWe are Optiveum, and we are currently looking for a Senior .NET Fullstack Developer to join the team of our client-a global, research-driven organization. In this setup, Optiveum acts as the recruitment and contracting party, meaning you will sign the B2B cooperation agreement directly with us.\nKey Details:\nLocation: 100% Remote (Based in Poland / Warsaw)\n\nRate: Up to 36 EUR/h\n\nMode of work: Full-time (40 hours/week)\n\nLanguage requirement: English (Fluent)\n\nWhat you will be doing:\nDeveloping, maintaining, and improving business-critical full-stack applications.\n\nModernizing legacy applications and migrating solutions to current versions of .NET.\n\nWorking seamlessly across all application layers, including UI, backend services, APIs, and data sources.\n\nDesigning and implementing new functionalities that support the registration of new molecules and other research entities.\n\nEstablishing and improving Azure infrastructure for both modernized and existing applications.\n\nCreating and maintaining CI/CD pipelines using GitHub Actions.\n\nImproving engineering quality through automated testing, code reviews, secure development practices, observability, and comprehensive documentation.\n\nSupporting applications throughout their lifecycle, balancing maintenance, operational stability, technical debt reduction, and new development.\n\nWhat we are looking for:\nSeveral years of senior-level professional experience in full-stack software development.\n\nStrong, hands-on experience with C# and .NET, including maintaining existing solutions and upgrading/migrating legacy applications to newer versions.\n\nPractical knowledge of Oracle databases, SQL, data access, and integration between applications and database platforms.\n\nHands-on experience with Azure cloud services and CI/CD pipelines (preferably GitHub Actions).\n\nA broad understanding of software architecture, APIs, application security, testing, and deployment.\n\nA self-driven working style with the confidence to take full ownership of tasks and solutions.\n\nFluent English communication skills.\n\nDoes this sound like a match? Apply today!","description_format":"text","description_chars":2152,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-05T13:18:30Z"}],"visa":[],"liveness":{"score":54,"band":"ok","label":"Likely open","p_open":1,"p_active":0.542,"p_room":1,"age_days":3,"expected_fill_days":19,"reasons":["conf:2","agency","velocity","win:early"],"computed_at":"2026-10-09T06:01:00Z"},"pay":{"stated_usd_annual":82000,"is_top_pay":false},"html_url":"https://alion.io/job/optiveum-senior-net-fullstack-developer","json_url":"https://alion.io/job/optiveum-senior-net-fullstack-developer.json","meta":{"generated_at":"2026-10-10T01:03:44Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1745,"day_limit":5000,"remaining_today":3255,"minute_limit":60,"resets_at":"2026-10-11T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":685848},"rest":"https://alion.io/mcp/rest/get_company?id=685848"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Foptiveum-senior-net-fullstack-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Foptiveum-senior-net-fullstack-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Foptiveum-senior-net-fullstack-developer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/optiveum-senior-net-fullstack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Foptiveum-senior-net-fullstack-developer"}]}