{"id":770604,"url":"https://alion.io/job/fin-senior-backend-software-engineer","title":"Senior Backend Software Engineer","company":{"id":7591,"name":"Fin","domain":"fin.tech","url":"https://alion.io/company/fin","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"C","score":58,"open_postings":10,"ghost_share":0.7,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":53,"computed_at":"2026-10-16T05:45:00Z"}},"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":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":125000,"max":250000,"currency":"USD","period":"year","gross":null,"usd_annual":250000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Node JS","optional":false},{"name":"Rust","optional":false},{"name":"TypeScript","optional":false},{"name":"AWS","optional":true},{"name":"Go","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"Temporal","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2025-12-03T14:52:49Z","employer_posted_date":"2025-12-03","last_verified_at":"2026-10-16T16:16:15Z","board_verified":true,"closed_at":null,"days_open":317,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":316},"description":"About Fin\nFin is a next-generation payments platform built for high-value, global, and instant transactions. We are a Series A-stage company backed by Sequoia, Circle, and other notable investors. Powered by stablecoins, Fin enables users and businesses to move millions of dollars in seconds - whether to other Fin users, directly into bank accounts, or across crypto rails. By combining the speed of crypto with the reliability and trust of traditional finance, Fin reimagines how money moves worldwide. If banks and payment products were reinvented today, they would look like Fin.\nAbout the role\nWe are looking for a Senior Backend Engineer to own the core systems that make this work. You will design and build the services that move real money, integrate with payment partners and banks, and ensure the platform is secure, observable, and ready to scale to millions of transactions.\nYou will work closely with the CEO, CTO, and a small senior team, making foundational architectural decisions and shipping production systems quickly. This role is a fit if you enjoy wresting simplicity out of complex problems and care deeply about reliability and correctness in financial systems.\nWe value your time: our process focuses on practical system design and architectural discussions, not LeetCode grinding or unpaid take-home assignments.\nWhat you will do\nDesign, build, and maintain core backend services that power global payments and account experiences.\n\nOwn key systems end to end, from data models and APIs to deployment and ongoing operations.\n\nIntegrate with payment processors, on and off ramps, banks, and compliance and identity providers.\n\nMonitor, tune, and scale backend services while maintaining high availability and strong performance.\n\nDefine and champion backend engineering best practices, coding standards, and architectural patterns.\n\nBuild internal tools and automation that improve developer productivity and system reliability.\n\nSet and guide technical direction for backend architecture with a clear view of business impact and scalability.\n\nReview code, share knowledge, and help raise the bar for the rest of the engineering team.\n\nOwn our cloud infrastructure setup and deployment workflows in partnership with the rest of the team.\n\nWhat you need to be successful\nDeep experience with TypeScript and Node.js. We are mostly a TS shop with some pockets of Rust.\n\nStrong experience designing and building scalable distributed backend systems.\n\nTrack record of owning critical backend infrastructure and making impactful architectural decisions.\n\nDeep familiarity with cloud infrastructure, containerization, and infrastructure as code.\n\nExperience building highly available systems with robust monitoring, logging, and alerting.\n\nHistory of creating clean, well documented APIs and integrating complex external systems.\n\nAbility to collaborate in a small, fast moving team while mentoring others.\n\nClear communication skills and comfort working with both technical and non technical partners.\n\nBonus points\nExperience at early stage startups where you owned large parts of the backend.\n\nHands on experience with our stack or similar: Node.js and Typescript, AWS, Terraform, Kubernetes, Temporal (https://temporal.io) .\n\nBackground leading technical strategy for a growing product or platform.\n\nExperience in payments, fintech, or cryptocurrency, especially working with stablecoins or settlement systems.","description_format":"text","description_chars":3434,"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":["Payment Processing & Gateways","Stablecoins"],"lifecycle":[{"event":"open","at":"2026-09-11T21:27:04Z"},{"event":"open","at":"2026-09-25T21:52:39Z"}],"visa":[],"liveness":{"score":3,"band":"cold","label":"Long shot","p_open":1,"p_active":0.119,"p_room":0.28,"age_days":316,"expected_fill_days":53,"reasons":["conf:3","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-16T05:45:00Z"},"pay":{"stated_usd_annual":250000,"is_top_pay":true},"html_url":"https://alion.io/job/fin-senior-backend-software-engineer","json_url":"https://alion.io/job/fin-senior-backend-software-engineer.json","meta":{"generated_at":"2026-10-16T19:29:00Z","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":5082,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"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":7591},"rest":"https://alion.io/mcp/rest/get_company?id=7591"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffin-senior-backend-software-engineer"},{"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%2Ffin-senior-backend-software-engineer"},{"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%2Ffin-senior-backend-software-engineer"},{"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/fin-senior-backend-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffin-senior-backend-software-engineer"}]}