{"id":776799,"url":"https://alion.io/job/kadmos-senior-backend-engineer-berlin","title":"Senior Backend Engineer (Berlin)","company":{"id":681325,"name":"Kadmos","domain":"kadmos.io","url":"https://alion.io/company/kadmos-3","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Berlin, Germany"],"countries":["DE"],"hiring_countries":["DE","GB"],"hiring_countries_total":2,"salary":null,"salary_estimate":{"min_usd":81000,"max_usd":162000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":27},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Java","optional":false},{"name":"JUnit","optional":false},{"name":"Spring Boot","optional":false},{"name":"Testcontainers","optional":false}],"status":"live","first_seen_at":"2025-09-15T11:59:37Z","employer_posted_date":"2026-05-06","last_verified_at":"2026-10-14T11:13:38Z","board_verified":true,"closed_at":null,"days_open":393,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":393},"description":"About the opportunity\nAbout the opportunity\nWe are looking for a Senior Backend Developer who will take ownership of crucial backend engineering activities at Kadmos. As a regulated salary payment provider in the shipping industry, we are building secure, reliable, and scalable financial solutions that empower seafarers and shipping companies worldwide. You will play a central role in shaping the backbone of our platform and driving innovation in a highly regulated environment.\nWhat you can expect\nOwn the backend. You will be responsible for developing and maintaining core backend systems, building reusable libraries, implementing complex financial components, and integrating with external service providers.\nWork with independence. You’ll be trusted to take full ownership of your responsibilities, while collaborating closely with product, compliance, and engineering teams.\nImpact at scale. You will contribute directly to a platform serving the global shipping industry, with the opportunity to design systems that handle secure financial transactions.\nCollaborative environment. We value diversity, transparency, and teamwork. You’ll join an open and supportive culture where everyone’s input matters.\nWhat you bring along\n5+ years of professional experience in backend engineering with Java Spring Boot.\nMaster's degree in Computer Science, Mathematics, or Physics.\nExpertise in Spring Boot and strong knowledge of modern frameworks, SDKs, API standards, and libraries.\nSolid experience with unit, integration, and performance testing (JUnit, Spock, Testcontainers).\nStrong understanding of building secure, reliable, and scalable systems, ideally in a regulated or financial services context.\nProactive, ambitious, and collaborative mindset with a track record of delivering high-quality solutions.\nFluency in English.\nNice to have: familiarity with React and experience in building financial products.\nWhy us\n Opportunity to work in a company with direct social impact\n Attractive compensation\n Open & International environment\n Fantastic location in the heart of Berlin & flexible WFH policy\n Free lunch at the office\n Latest equipment, to ensure you have everything needed\nAbout the company\nKadmos is on an ambitious mission to revolutionise salary payments to migrant workers. The Berlin-based startup was founded in 2021 by MIT graduates Justus Schmueser and Sasha Makarovych to bring fintech, low margins, and transparent FX to industries riddled with opaque mark-ups, kickbacks, and physical cash transactions.\nBacked by renowned VCs Addition and Atlantic Labs, Kadmos has raised more than $39 million since 2021. The company intends to use the funding for expanding across industries and further accelerating product development. For more information, visit https://www.kadmos.io/","description_format":"text","description_chars":2804,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"},{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Software & Embedded Finance","Payroll Services"],"lifecycle":[{"event":"open","at":"2026-09-11T23:14:32Z"},{"event":"open","at":"2026-09-26T07:17:01Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; Skilled Worker","cap_exempt":false,"checked_at":"2026-10-14T06:20:30+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.191,"p_room":0.28,"age_days":393,"expected_fill_days":35,"reasons":["conf:4","win:tail","crowd:"],"computed_at":"2026-10-14T06:34:16Z"},"pay":null,"html_url":"https://alion.io/job/kadmos-senior-backend-engineer-berlin","json_url":"https://alion.io/job/kadmos-senior-backend-engineer-berlin.json","meta":{"generated_at":"2026-10-14T11:33:13Z","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":13927,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"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":681325},"rest":"https://alion.io/mcp/rest/get_company?id=681325"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fkadmos-senior-backend-engineer-berlin"},{"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%2Fkadmos-senior-backend-engineer-berlin"},{"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%2Fkadmos-senior-backend-engineer-berlin"},{"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/kadmos-senior-backend-engineer-berlin\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fkadmos-senior-backend-engineer-berlin"}]}