{"id":2214913,"url":"https://alion.io/job/madiff-java-backend-developer","title":"Java Backend Developer","company":{"id":4374669,"name":"Madiff","domain":"madiff.eu","url":"https://alion.io/company/madiff-2","size_band":"51-200","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Zoho Recruit","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":78000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":82},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Java","optional":false},{"name":"Oracle","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"CI/CD","optional":true}],"status":"live","first_seen_at":"2026-10-10T06:58:09Z","employer_posted_date":"2026-10-10","last_verified_at":"2026-10-11T22:29:00Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"We are\nlooking for a Java Backend Developer to join a production-critical backend\nplatform within the payments domain. The role focuses on building and\nmaintaining high-performance backend services in a regulated, high-scale\nenvironment, supporting transaction processing, settlements, financial\nreporting, and integrations with internal and external systems. Strong hands-on\nJava experience and comfort working with mature, mission-critical systems are\nessential.\n\n Responsibilities\nDesign and develop backend services using Java 17+\nBuild scalable components supporting transaction data,settlements, and reporting\n\nIntegrate backend services with relational databasesand internal financial systems\n\nDevelop secure REST APIs aligned with compliance andsecurity standards\n\nCollaborate closely with product owners, analysts,architects, and QA teams\n\nOptimise system performance, reliability, and dataprocessing efficiency\n\nParticipate in code reviews, testing, and continuousimprovement activities\n\nSupport platform modernisation and resolve productionissues\n\nContributeto clean code practices and long-term platform scalability\n\nRequirements\n3-5 years of commercial Java backend experience\nStrong knowledge of Java 17+ and modern backendframeworks\n\nHands-on experience with relational databases(SQL; Oracle / PL/SQL preferred)\n\nExperience working with microservices anddistributed systems\n\nSolid understanding of REST API design and systemintegrations\n\nExperience working in Agile delivery teams\nGoodcommunication skills and ability to work in international environments Nice to have \n\nExperience in fintech, payments, banking, or otherregulated domains\n\nExposure to CI/CD pipelines, DevOps practices, orcontainerised environments\n\nExperience with messaging or event-drivenarchitectures\n\nBackgroundin high-volume or real-time systems\n\nBenefits\nSolid, competitive salary\nWork in a multinational environment on international projects\nComprehensive healthcare\nLong-term B2B contract with a stable project pipeline\nHybrid working model (remote with 1 day per weekin the Warsaw office)","description_format":"text","description_chars":2080,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-10T06:58:09Z"}],"visa":[],"liveness":{"score":52,"band":"ok","label":"Likely open","p_open":1,"p_active":0.516,"p_room":1,"age_days":1,"expected_fill_days":32,"reasons":["conf:0","agency","win:early","comp:brand"],"computed_at":"2026-10-11T22:33:46Z"},"pay":null,"html_url":"https://alion.io/job/madiff-java-backend-developer","json_url":"https://alion.io/job/madiff-java-backend-developer.json","meta":{"generated_at":"2026-10-11T22:33:46Z","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":12586,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-12T00:00:00Z"}},"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":4374669},"rest":"https://alion.io/mcp/rest/get_company?id=4374669"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmadiff-java-backend-developer"},{"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%2Fmadiff-java-backend-developer"},{"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%2Fmadiff-java-backend-developer"},{"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/madiff-java-backend-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmadiff-java-backend-developer"}]}