{"id":2111874,"url":"https://alion.io/job/upvanta-senior-java-developer-payments-iso-8583","title":"Senior Java Developer – Payments / ISO 8583","company":{"id":1332,"name":"Upvanta","domain":"upvanta.com","url":"https://alion.io/company/upvanta-sp-z-o-o","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":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":130,"max":150,"currency":"PLN","period":"hour","gross":null,"usd_annual":76000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"Apache Kafka","optional":true},{"name":"Docker","optional":true},{"name":"Kubernetes","optional":true}],"status":"live","first_seen_at":"2026-10-08T13:25:53Z","employer_posted_date":null,"last_verified_at":"2026-10-08T13:25:53Z","board_verified":false,"closed_at":null,"days_open":5,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":5},"description":"Forma pracy: 100% zdalnie\nPoziom: Senior\nStawka: 130-150 PLN/h B2BDo naszego zespołu szukamy Senior Java Developera, który ma doświadczenie w obszarze płatności lub pracował z ISO 8583.Jeśli dobrze czujesz się w Javie, masz doświadczenie w projektowaniu i rozwijaniu systemów backendowych oraz znasz specyfikę systemów płatniczych - zapraszamy do kontaktu.Oferujemy100% pracę zdalną,\nstabilny, długoterminowy projekt,\npracę przy systemach z obszaru fintech / payments,\nwpływ na rozwiązania techniczne i architekturę,\nwspółpracę z doświadczonym zespołem,\nelastyczne godziny pracy,\nmożliwość pracy na kontrakcie B2B / UoP.\n\nZakres obowiązków\nrozwój i utrzymanie backendowych systemów płatniczych,\nprojektowanie i implementacja nowych funkcjonalności w Javie,\nintegracja z systemami zewnętrznymi oraz usługami płatniczymi,\npraca z komunikacją opartą o ISO 8583,\nrozwój i integracja mikroserwisów,\nanaliza problemów technicznych i optymalizacja istniejących rozwiązań,\nwspółpraca z zespołem developerskim, QA oraz analitykami,\nudział w podejmowaniu decyzji architektonicznych i technologicznych.\nWymagania\nWymaganiaMust have:minimum 5 lat doświadczenia komercyjnego w Javie,\nbardzo dobra znajomość Java / Spring / Spring Boot,\ndoświadczenie w tworzeniu i rozwijaniu systemów backendowych,\ndoświadczenie w obszarze płatności LUB praktyczna znajomość ISO 8583 – warunek konieczny,\nznajomość REST API i integracji systemów,\ndoświadczenie z bazami danych SQL,\nznajomość Git,\nsamodzielność i umiejętność rozwiązywania problemów technicznych.\nMile widziane:doświadczenie z systemami transakcyjnymi o dużym wolumenie,\nznajomość architektury mikroserwisowej,\nKafka / messaging,\nDocker / Kubernetes,\ndoświadczenie z chmurą,\nznajomość innych standardów i protokołów wykorzystywanych w płatnościach.\n\nTech stack\nJava\nSpring Boot\nP\nISO\nREST API\nSQL\nGit\nKafka\nDocker\nKubernetes","description_format":"text","description_chars":1860,"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":["Custom Software Development","IT Staffing & Staff Augmentation"],"lifecycle":[{"event":"open","at":"2026-10-08T22:25:03Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":4,"expected_fill_days":30,"reasons":["seen:4","velocity","win:early","comp:brand"],"computed_at":"2026-10-13T05:45:00Z"},"pay":{"stated_usd_annual":76000,"is_top_pay":false},"html_url":"https://alion.io/job/upvanta-senior-java-developer-payments-iso-8583","json_url":"https://alion.io/job/upvanta-senior-java-developer-payments-iso-8583.json","meta":{"generated_at":"2026-10-13T21:12:58Z","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":32474,"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":1332},"rest":"https://alion.io/mcp/rest/get_company?id=1332"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fupvanta-senior-java-developer-payments-iso-8583"},{"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%2Fupvanta-senior-java-developer-payments-iso-8583"},{"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%2Fupvanta-senior-java-developer-payments-iso-8583"},{"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/upvanta-senior-java-developer-payments-iso-8583\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fupvanta-senior-java-developer-payments-iso-8583"}]}