{"id":2117356,"url":"https://alion.io/job/cosinus-net-developer-5","title":".NET Developer","company":{"id":4078680,"name":"Cosinus","domain":"cosinus.io","url":"https://alion.io/company/cosinus-io","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Łódź, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":43000,"max_usd":82000,"period":"year","method":"role_country_seniority_unknown","sample_n":924},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ASP.NET Core","optional":false},{"name":"C#","optional":false},{"name":"Flyway","optional":false},{"name":"MS SQL","optional":false},{"name":"SQL","optional":false},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-10-04T09:00:13Z","employer_posted_date":null,"last_verified_at":"2026-10-04T09:00:13Z","board_verified":false,"closed_at":null,"days_open":13,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":13},"description":"Szukamy .NET Developera, który dołączy do naszego zespołu i wesprze nas w realizacji projektów opartych na nowoczesnych technologiach Microsoft. Jeżeli lubisz pisać czysty, testowalny kod, cenisz sobie dobrą atmosferę i pracę zespołową – zapraszamy!\nTwój zakres obowiązków\nTworzenie i utrzymanie API (ASP.NET Core Web API) oraz zadań cyklicznych (background jobs) w C# / .NET\n\nProjektowanie i optymalizacja zapytań SQL oraz zarządzanie migracjami bazy danych (MSSQL, Flyway)\n\nRozwój i utrzymanie aplikacji opartych na platformie DotNetNuke (DNN)\n\nUdział w Code Review, planowaniu zadań\n\nPisanie testów jednostkowych i integracyjnych\n\nAnaliza i rozwiązywanie bieżących problemów technicznych\n\nDbanie o jakość, czytelność i poprawność tworzonego kodu\n\nNasze wymagania\nDoświadczenie komercyjne w C# / .NET\n\nZnajomość C# i platformy .NET (.NET 8+)\n\nZnajomość i doświadczenie z platformą DotNetNuke (DNN) – tworzenie modułów, customizacja, wdrożenia\n\nPraktyczna znajomość SQL i relacyjnych baz danych – Microsoft SQL Server (MSSQL)\n\nZnajomość ASP.NET Core Web API\n\nZnajomość GIT-a oraz umiejętność pracy z Visual Studio / Visual Studio Code\n\nZnajomość zasad czystego kodu i dobrych praktyk programistycznych\n\nZnajomość testów jednostkowych i integracyjnych\n\nUmiejętność czytania dokumentacji technicznej w języku angielskim\n\nUmiejętność samodzielnego rozwiązywania problemów i pracy w zespole\n\nMile widziane\nZnajomość PostgreSQL\n\nUmiejętność pracy z narzędziami AI w codziennym programowaniu\n\nDoświadczenie z Flyway lub innym narzędziem do migracji baz danych\n\nUdział w projektach własnych lub open source\n\nWykształcenie kierunkowe lub w trakcie studiów informatycznych\n\nTo oferujemy\nzatrudnienie na podstawie umowy o pracę,\n\npracę na pełen etat,\n\npracę 100% stacjonarną w biurze w Łodzi,\n\nmożliwość rozwoju zawodowego i nauki od doświadczonego zespołu,\n\nudział w ciekawych projektach technologicznych,\n\nprzyjazną atmosferę i wsparcie wdrożeniowe od pierwszego dnia,\n\nstabilne zatrudnienie w firmie o ugruntowanej pozycji na rynku.\n\nTech stack\nMS SQL Server\nC#\n.NET C#\nASP.NET Core Web API\nTesting\nVisual Studio\nSQL","description_format":"text","description_chars":2110,"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":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-08T22:59:03Z"}],"visa":[],"liveness":{"score":73,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.816,"p_room":0.9,"age_days":12,"expected_fill_days":22,"reasons":["seen:12","velocity","win:mid"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/cosinus-net-developer-5","json_url":"https://alion.io/job/cosinus-net-developer-5.json","meta":{"generated_at":"2026-10-17T13:58:12Z","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_verified","counted_by":"address","units_charged":1,"used_today":18769,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":4078680},"rest":"https://alion.io/mcp/rest/get_company?id=4078680"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcosinus-net-developer-5"},{"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%2Fcosinus-net-developer-5"},{"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%2Fcosinus-net-developer-5"},{"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/cosinus-net-developer-5\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcosinus-net-developer-5"}]}