{"id":2117622,"url":"https://alion.io/job/polcode-midsenior-full-stack-developer-net-react","title":"Mid/Senior Full-Stack Developer (.NET + React)","company":{"id":1845470,"name":"Polcode","domain":"polcode.com","url":"https://alion.io/company/polcode-com","size_band":"51-200","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","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":["IL"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":56000,"max_usd":90000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":218},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"C#","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"WhatsApp","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-14T21:58:13Z","employer_posted_date":null,"last_verified_at":"2026-09-14T21:58:13Z","board_verified":false,"closed_at":null,"days_open":28,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":28},"description":"About Polcode\n\nPolcode is a Poland-based software house working with clients worldwide since 2006. We build web, mobile, and eCommerce products for startups and well-established companies across Europe, the US, and beyond. What makes us different? We put people first while staying deeply tech-driven - People at heart | Technology in mind. We trust our teams, encourage ownership, share knowledge daily, and create a place where everyone can grow and feel at home. 💜\n\nRole Overview\n\nWe’re looking for a *strong Mid or Senior Full-Stack Developer (.NET + React) *to join an ongoing project and work directly with a client team based in Israel.\n\nThe project is in the insurance domain and combines further development of an existing system with a broader transformation from a legacy, on-premises solution towards a cloud-based SaaS model. Backend development is the main focus, but you’ll also work across the stack, including React.js interfaces, external integrations, legacy refactoring, and AI-powered automation.\n\nThis is a role where the person behind the technical skills matters a lot. We’re looking for someone who communicates clearly, takes responsibility, works independently, and is comfortable discussing technical challenges and progress directly with an international team.\n\nWhy this project is worth your attention:\n\nOngoing cooperation with no fixed end date\n\nOpportunity to contribute to the transformation of an existing insurance system towards a SaaS model\n\nA varied engineering scope combining backend, frontend, integrations, architecture, and legacy modernization\n\nBackend-focused role without being limited to one part of the stack\n\nExposure to AI-powered automation and modern AI-assisted development workflows\n\nDirect cooperation with an international client team\n\nA role where communication, ownership, and engineering judgment are genuinely important.\n\nGet ready to:\n\nDevelop backend business logic using .NET / C#\n\nBuild and maintain REST API integrations with insurance companies and external services\n\nContribute to the system’s transition from an on-premises architecture towards a cloud-based, multi-tenant SaaS model\n\nWork on multi-tenancy concepts, including database and schema isolation\n\nDevelop and improve responsive React.js interfaces for desktop, tablet, and mobile\n\nSupport RTL / Hebrew-oriented frontend views where needed\n\nMaintain and refactor legacy code while improving system performance, security, and architecture\n\nWork with integrations such as WhatsApp and automated dialer systems\n\nContribute to AI and bot integrations using MCP (Model Context Protocol)\n\nUse AI-assisted development tools as part of your day-to-day engineering workflow.\n\nWymagania\nWhat we're looking for:\n\nStrong commercial experience with .NET / C#\n\nGood hands-on knowledge of React.js\n\nExperience building and integrating REST APIs and working with webhooks\n\nExperience with relational databases\n\nUnderstanding of SaaS architecture and multi-tenancy concepts\n\nExperience in the insurance / Insurtech domain\n\nAbility to work independently and take responsibility for complex tasks and modules\n\nFlexibility to move between backend, frontend, maintenance, integrations, and new development\n\nStrong communication skills and the ability to clearly discuss progress, blockers, and technical decisions\n\nEnglish at B2/C1 level for comfortable day-to-day communication in an international team.\n\nOferujemy\nPerks of being a #Polcoder:\n\n100–180 PLN/H netto + VAT\n\n100% remotely (within Poland only) or in our office: Warszawa\n\nMultisport card, private medical care, life insurance, and meaningful gifts to celebrate important days\n\nAll the necessary equipment for comfortable work\n\nProfessional onboarding process\n\nWe respect your private life - no overtime, no weekend jobs, work-life balance only, promise!\n\nWork at times that suit your daily rhythm, from the place of your choice\n\nYour work is appreciated - we believe in the power of feedback, as well as the one you give us.\n\nUse annual budgets for attending workshops, events, business trips, conferences and language lessons.\n\nDive into global projects tailored to your core strengths, while building new skills through each project.\n\nFeel the rhythm of the international IT market. We adapt only technologies that are up-to-date with the latest industry standards.\n\nAttend after-hour parties and team-building events, face sports challanges and take part in other company activities. Make friendships that last over the years.","description_format":"text","description_chars":4500,"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":["Life insurance"],"hiring_locations":[{"name":"Israel","iso":"IL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Software","Web Development Services"],"lifecycle":[{"event":"open","at":"2026-10-08T23:22:33Z"}],"visa":[],"liveness":{"score":52,"band":"ok","label":"Likely open","p_open":0.85,"p_active":0.811,"p_room":0.75,"age_days":28,"expected_fill_days":35,"reasons":["seen:28","win:late"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/polcode-midsenior-full-stack-developer-net-react","json_url":"https://alion.io/job/polcode-midsenior-full-stack-developer-net-react.json","meta":{"generated_at":"2026-10-13T08:32:00Z","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":12680,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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":1845470},"rest":"https://alion.io/mcp/rest/get_company?id=1845470"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpolcode-midsenior-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%2Fpolcode-midsenior-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%2Fpolcode-midsenior-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/polcode-midsenior-full-stack-developer-net-react\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpolcode-midsenior-full-stack-developer-net-react"}]}