{"id":2114880,"url":"https://alion.io/job/sii-senior-node-js-developer-fmx","title":"Senior Node.js Developer (f/m/x)","company":{"id":1387,"name":"Sii","domain":"sii.pl","url":"https://alion.io/company/sii","size_band":"5000+","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Career sitemap","truth_index":null},"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":["Kraków, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":63000,"max_usd":105000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":352},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Node JS","optional":false},{"name":"SQL","optional":false},{"name":"Angular","optional":true},{"name":"Git","optional":true},{"name":"Go","optional":true},{"name":"JavaScript","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Python","optional":true},{"name":"React.js","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-09-11T09:01:40Z","employer_posted_date":"2026-09-11","last_verified_at":"2026-10-29T20:29:23Z","board_verified":true,"closed_at":null,"days_open":48,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":48},"description":"This translation is generic and may include errors.\nShow original text\n\nThis offer base language is English.\nTranslate into Polish.\nTechnologie i narzędzia\nWymagane\n\nNode.js\n\nSQL\n\nAPI sieciowe\n\nMile widziane\nGo\nReact\nPython\nCykl życia oprogramowania\nSzukamy Senior Node.js Developer (f/m/x), który dołączy do nowo utworzonego zespołu pracującego nad platformą analityki produktów i telemetrii. W tej roli będziesz miał okazję pracować z nowoczesnymi technologiami IT, ściśle współpracując z wewnętrznymi klientami technologicznymi, aby dostarczać wysokiej jakości rozwiązania, które zwiększają satysfakcję użytkowników. Stanowisko oferuje hybrydowy model pracy z siedzibą w Krakowie, co pozwala na elastyczność w środowisku pracy.\nTwoje zadania\nUczestnictwo w projektowaniu architektury oprogramowania w celu tworzenia skalowalnych i efektywnych rozwiązań\nWdrażanie rozwiązań zgodnie z najlepszymi wzorcami projektowymi i standardami branżowymi\nAnaliza wymagań w celu pełnego zrozumienia rozwiązań i rekomendowanie ulepszeń\nTworzenie kompleksowej i jasnej dokumentacji dla opracowanych rozwiązań, aby zapewnić ich łatwość w utrzymaniu\nOpracowywanie i praca nad prototypami aplikacji w celu weryfikacji koncepcji i projektów\nZarządzanie zmianami w cyklu życia zarządzania usługami, aby zapewnić płynne przejścia\nAktywne uczestnictwo w automatyzacji i poprawie cyklu życia zarządzania usługami\nSkuteczna komunikacja z klientami w celu zrozumienia ich potrzeb i dostarczenia odpowiednich rozwiązań\nWymagania\nCo najmniej 5-letnie doświadczenie zawodowe w rozwoju backendu\nDogłębna wiedza w zakresie Node.js i rozwoju Web API\nSilne umiejętności projektowania baz danych i SQL z PostgreSQL\nPraktyczne doświadczenie w cyklu życia rozwoju oprogramowania (SDLC)\nSilne umiejętności rozwiązywania problemów i dbałość o szczegóły\nDobre umiejętności interpersonalne i zdolność do pracy zespołowej\nZnajomość Git\nZaawansowany poziom języka angielskiego\nGotowość do pracy z biura w Krakowie do 6 dni w miesiącu\nMile widziane\nDoświadczenie z językiem Go\nZnajomość frameworków JavaScript, takich jak React lub Angular 2+\nZnajomość HTML 5 i CSS\nDoświadczenie w wsparciu środowiska produkcyjnego z silnymi umiejętnościami zarządzania usługami\nNr oferty JOB-ZPYKK\nSii zapewnia, że wszystkie decyzje związane z zatrudnieniem są podejmowane wyłącznie na podstawie kwalifikacji i kompetencji. Zobowiązujemy się do równego traktowania wszystkich osób, niezależnie od cech chronionych, oraz promowania zróżnicowanego i integracyjnego środowiska pracy.\nTechnologies & tools\nMust have\n\nNode.js\n\nSQL\n\nWeb APIs\n\nNice to have\nGo Language\nReact.js\nPython\nSDLC\nWe are looking for a Senior Node.js Developer to join a newly formed team working on product analytics and telemetry platform. In this role, you will have the opportunity to work with cutting-edge IT technologies while collaborating closely with internal technology customers to deliver high-quality solutions that enhance user satisfaction. The position offers a hybrid work model based in Cracow, allowing for flexibility in your work environment.\nYour tasks\nParticipating in software architecture design to create scalable and efficient solutions\nImplementing solutions according to best design patterns and industry standards\nAnalyzing requirements to fully understand solutions and recommending improvements\nCreating comprehensive and clear documentation for developed solutions to ensure maintainability\nDeveloping and working on application prototypes to validate concepts and designs\nManaging changes through the service management lifecycle to ensure smooth transitions\nInvolving actively in automation and improving the service management lifecycle\nCommunicating effectively with customers to understand their needs and provide appropriate solutions\nRequirements\nAt least 5 years of professional experience in backend development\nDeep expertise in Node.js and Web API development\nStrong database design and SQL skills with PostgreSQL\nPractical experience in the software development lifecycle (SDLC)\nStrong problem-solving skills and attention to detail\nGood interpersonal skills and ability to work collaboratively\nProficiency in Git\nAdvanced level of English\nWillingness to work from the Kraków office up to 6 days per month\nNice to have\nExperience with Go language\nFamiliarity with JavaScript frameworks like React or Angular 2+\nKnowledge of HTML 5 and CSS\nExperience supporting a production environment with strong service management skills\nJob no. JOB-ZPYKK\nSii zapewnia, że wszystkie decyzje związane z zatrudnieniem są podejmowane wyłącznie na podstawie kwalifikacji i kompetencji. Zobowiązujemy się do równego traktowania wszystkich osób, niezależnie od cech chronionych, oraz promowania zróżnicowanego i integracyjnego środowiska pracy.","description_format":"text","description_chars":4783,"description_truncated":false,"requirements":{"experience_years_min":5,"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":["Hybrid work"],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Engineering Services","IT Staffing & Staff Augmentation"],"lifecycle":[{"event":"open","at":"2026-10-08T23:16:07Z"}],"visa":[],"liveness":{"score":27,"band":"fade","label":"Fading","p_open":1,"p_active":0.763,"p_room":0.36,"age_days":47,"expected_fill_days":28,"reasons":["conf:3","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-29T05:49:05Z"},"pay":null,"html_url":"https://alion.io/job/sii-senior-node-js-developer-fmx","json_url":"https://alion.io/job/sii-senior-node-js-developer-fmx.json","meta":{"generated_at":"2026-10-30T00:01:37Z","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":40,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":1387},"rest":"https://alion.io/mcp/rest/get_company?id=1387"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsii-senior-node-js-developer-fmx"},{"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%2Fsii-senior-node-js-developer-fmx"},{"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%2Fsii-senior-node-js-developer-fmx"},{"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/sii-senior-node-js-developer-fmx\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsii-senior-node-js-developer-fmx"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2114880}},{"tool":"search_jobs","arguments":{"company":"sii.pl","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2114880},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}