{"id":2944401,"url":"https://alion.io/job/engenious-full-stack-developer-net-react","title":"Full Stack Developer (.NET / React)","company":{"id":4435502,"name":"Engenious","domain":"engenious.pl","url":"https://alion.io/company/engenious-2","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":"contractor","work_mode":"on_site","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":160,"max":180,"currency":"PLN","period":"hour","gross":null,"usd_annual":92000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"ASP.NET Core","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Entity Framework Core","optional":false},{"name":"Material UI","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"Redux Toolkit","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"State Management","optional":false},{"name":"TypeScript","optional":false},{"name":"Apache ECharts","optional":true},{"name":"Deck.gl","optional":true},{"name":"JavaScript","optional":true},{"name":"Redux","optional":true},{"name":"Time Series","optional":true},{"name":"WebSockets","optional":true}],"status":"live","first_seen_at":"2026-10-20T13:00:32Z","employer_posted_date":null,"last_verified_at":"2026-10-20T13:00:32Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"Full Stack Developer (.NET / React)\n\nRole Summary:\nWe are looking for a Full Stack Developer who will develop and maintain full-stack applications using .NET and React. Work on backend services and APIs, frontend pages, databases, and real-time systems within a modern microservices architecture. Contribute to the full software development lifecycle, from design and implementation to testing and deployment. This is a fully remote opportunity.\n\nKey Responsibilities:\nBuild frontend applications using React and TypeScript.\nDevelop and maintain backend services using C# and .NET.\nDesign and implement REST APIs and real-time communication solutions.\nDevelop and optimize data access using PostgreSQL and Entity Framework Core.\nWork with event-driven architectures using Apache Kafka.\nParticipate in architecture discussions, code reviews, and technical design activities.\nTroubleshoot and resolve issues across the full application stack.\nCollaborate with Product Owners, UX designers, AQAs and other engineering teams.\n\nRequired Skills\nStrong experience with C# and .NET (ASP.NET Core).\nStrong experience with React, TypeScript, and Material UI.\nExperience building and consuming REST APIs.\nExperience with PostgreSQL or other relational databases.\nKnowledge of Entity Framework Core and SQL optimization.\nExperience with Redux Toolkit or similar state management solutions.\nFamiliarity with Docker and containerized development environments.\nUnderstanding of software engineering best practices, including testing, code reviews, and CI/CD.\n\nNice to have\nExperience with Apache Kafka, event-driven systems, or messaging platforms.\nExperience with WebSockets and real-time applications.\nKnowledge of microservices architectures.\nKnowledge of API security, authentication, JWT, etc.\nExperience with GIS, mapping, or data visualization technologies such as MapLibre, deck.gl, or ECharts.\nExperience with NoSQL time-series databases.\nBackground in the energy domain.\n\nTechnologiesBackend\n.NET 8, .NET 9, .NET 10, ASP.NET Core\nC#\nEntity Framework Core\nPostgreSQL\nApache Kafka\nOAuth 2.0\nFluentValidation\n\nFrontend\nReact 19\nTypeScript\nRedux Toolkit\nMaterial UI (MUI)\n\nTools & Infrastructure\nDocker\nKubernetes\nGit\nMicroservices Architecture\nWebSockets\nCI/CD Pipelines\n\nWhat can you expect\nTeam of passionate people who love what they do.\nOpportunity to learn and grow.\nPrivate Medical Care - INTER Polska.\nCo-funded Multisport Card.\nPossible training or certification subsidies.\nRate: 160-180 PLN net/h.\n\nZakres obowiązków\nBuild frontend applications using React and TypeScript.\nDevelop and maintain backend services using C# and .NET.\nDesign and implement REST APIs and real-time communication solutions.\nDevelop and optimize data access using PostgreSQL and Entity Framework Core.\nWork with event-driven architectures using Apache Kafka.\nParticipate in architecture discussions, code reviews, and technical design activities.\nTroubleshoot and resolve issues across the full application stack.\nCollaborate with Product Owners, UX designers, AQAs and other engineering teams.\nWymagania\nRequired Skills\nStrong experience with C# and .NET (ASP.NET Core).\nStrong experience with React, TypeScript, and Material UI.\nExperience building and consuming REST APIs.\nExperience with PostgreSQL or other relational databases.\nKnowledge of Entity Framework Core and SQL optimization.\nExperience with Redux Toolkit or similar state management solutions.\nFamiliarity with Docker and containerized development environments.\nUnderstanding of software engineering best practices, including testing, code reviews, and CI/CD.\nNice to have\n\nExperience with Apache Kafka, event-driven systems, or messaging platforms.\nExperience with WebSockets and real-time applications.\nKnowledge of microservices architectures.\nKnowledge of API security, authentication, JWT, etc.\nExperience with GIS, mapping, or data visualization technologies such as MapLibre, deck.gl, or ECharts.\nExperience with NoSQL time-series databases.\nBackground in the energy domain.\n\nTech stack\n.NET\nReact","description_format":"text","description_chars":4046,"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":["Information Technology","IT Consulting & Digital Transformation","Architecture"],"lifecycle":[{"event":"open","at":"2026-10-20T18:21:15Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":23,"reasons":["seen:2","velocity","win:early"],"computed_at":"2026-10-23T05:54:15Z"},"pay":{"stated_usd_annual":92000,"is_top_pay":false},"html_url":"https://alion.io/job/engenious-full-stack-developer-net-react","json_url":"https://alion.io/job/engenious-full-stack-developer-net-react.json","meta":{"generated_at":"2026-10-23T08:27:09Z","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":13551,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"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":4435502},"rest":"https://alion.io/mcp/rest/get_company?id=4435502"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fengenious-full-stack-developer-net-react"},{"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%2Fengenious-full-stack-developer-net-react"},{"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%2Fengenious-full-stack-developer-net-react"},{"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/engenious-full-stack-developer-net-react\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fengenious-full-stack-developer-net-react"}]}