{"id":2388649,"url":"https://alion.io/job/sdsolutions-fintech-client-4-senior-full-stack-developer","title":"FinTech Client #4 | Senior Full Stack Developer","company":{"id":4418535,"name":"SD Solutions","domain":"sdsolutions.tech","url":"https://alion.io/company/sdsolutions-3","size_band":"51-200","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Breezy","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","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":56000,"max_usd":93000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":312},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"Confluence","optional":false},{"name":"Java","optional":false},{"name":"UML","optional":false},{"name":"Agile","optional":true},{"name":"JavaScript","optional":true},{"name":"Scrum","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-09T13:18:49Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-13T18:07:59Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"On behalf of FinTech Client #4, SD Solutions is looking for a talented SeniorFull Stack Developer for Billing project that handles the processing of fees, exchanges, invoices, payments, and statements for our clients. We are looking for an experienced and skilled full-stack senior engineer who can lead the entire feature development cycle.\nSD Solutions is a staffing company operating globally. Contact us to get more details about the benefits we offer.\nResponsibilities:\n Collaborating with the product owner to clarify requirements and expectations\nCollaborating with the product owner to advise on the best UX approach\nDesigning the solution and effectively communicating with and getting feedback from various teams (such as Architecture, Security, BI, DBA, Bizops, etc.)\nCreating technical documentation with UML diagrams on Confluence\nImplementing the solution following best practices and standards\nCollaborating with the QA team\nSupporting production incidents\nRequirements:\n\nMore front-end oriented\nHave 3+ years of hands-on experience with Angular, used on your current or most recent project (MUST)\nHave 3+ years of Java experience (5+ years is a plus); candidates with strong motivation to grow backend skills are welcome\nBe responsible and proactive\nProduce high-quality deliverables and have a strong technical background\nHave willingness and passion to constantly improve Billing domain knowledge\nHave experience working in an Agile environment and follow the SCRUM framework. The project involves a lot of business challenges we have to provide technical solutions for\nAbout the company:\nA global fintech company providing unified payment infrastructure and financial services for merchants and consumers worldwide. The platform integrates multiple payment channels into a single solution, combining in-house technology development and product innovation to streamline transactions at scale.\nBy applying for this position, you agree to the terms outlined in our Privacy Policy. Please take a moment to review our Privacy Policy https://sd-solutions.breezy.hr/privacy-notice, and make sure you understand its contents. If you have any questions or concerns regarding our Privacy Policy, please feel free to contact us.","description_format":"text","description_chars":2236,"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":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-12T20:36:32Z"}],"visa":[],"liveness":{"score":52,"band":"ok","label":"Likely open","p_open":1,"p_active":0.516,"p_room":1,"age_days":3,"expected_fill_days":37,"reasons":["conf:2","agency","win:early"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/sdsolutions-fintech-client-4-senior-full-stack-developer","json_url":"https://alion.io/job/sdsolutions-fintech-client-4-senior-full-stack-developer.json","meta":{"generated_at":"2026-10-13T20:32:44Z","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":31539,"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":4418535},"rest":"https://alion.io/mcp/rest/get_company?id=4418535"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsdsolutions-fintech-client-4-senior-full-stack-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%2Fsdsolutions-fintech-client-4-senior-full-stack-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%2Fsdsolutions-fintech-client-4-senior-full-stack-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/sdsolutions-fintech-client-4-senior-full-stack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsdsolutions-fintech-client-4-senior-full-stack-developer"}]}