{"id":456917,"url":"https://alion.io/job/ether-fi-backend-engineer-card-transaction-processing","title":"Senior Backend Engineer - Transaction","company":{"id":175614,"name":"ether.fi","domain":"ether.fi","url":"https://alion.io/company/ether-fi","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":80,"open_postings":12,"ghost_share":0.25,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":159,"computed_at":"2026-11-14T05:58:10Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States","Denver, United States","Cayman Islands"],"countries":["US","KY"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":170000,"max":200000,"currency":"USD","period":"year","gross":null,"usd_annual":200000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"DeFi","optional":true},{"name":"EtherFi","optional":true}],"status":"live","first_seen_at":"2026-04-03T09:14:00Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-15T02:54:00Z","board_verified":true,"closed_at":null,"days_open":225,"trust":{"level":"ok","repost_count":1,"flags":["company_stale"],"days_open":224},"description":"About us:\nEther.fi is one of the largest crypto companies in the world. We have over $10B in assets under management and a team of 30 almost all technical staff. We’ve been profitable day one and are focusing on building real consumer applications.\nThe future we envisage is true on-chain banking. Our current products; Stake, Liquid, and Cash enable users to earn yield in a variety of DeFi strategies, and spend their assets in the real world with our credit cards. You can view public analytics on Dune for Cash and Stake.\nPosition overview:\nWe’re looking for a senior backend engineer to own core parts of our card program: transaction processing, authorization and decline handling, disputes, and the services around them. You’ll work on a small team where engineers own problems end to end, from understanding why a user’s card was declined to shipping the fix and measuring whether it worked. Anything a neobank would build is on our roadmap.\nWhat you’ll do:\nOwn core backend services for our card program, including authorization, clearing, refunds, and dispute flows\n\nReduce user friction from card declines: find root causes in transaction data, work with our issuing partners, and ship fixes\n\nMake product calls alongside design and ops: decide what to build, cut scope where it doesn’t serve users, and track outcomes after launch\n\nUse AI tools and agents as a core part of how you work, for coding, investigation, data analysis, and automating operational work\n\nImprove our infrastructure, CI/CD, observability, and monitoring so the team can ship safely and quickly\n\nWhat we are looking for:\n5+ years of professional backend engineering experience with strong fundamentals in software design and problem solving\n\nExperience building or operating a card program, on the issuing side, processor side, or as a fintech running cards through a program manager\n\nA product mindset: you care about what users experience, can turn a vague problem into a scoped plan, and judge your work by its effect on users\n\nYou already use AI heavily to get things done and can show examples where it changed how much or how fast you delivered\n\nYou have shipped products used by thousands of real users\n\nDrive and willingness to go the extra mile. We are an ambitious team with audacious goals, and we work hard to reach them\n\nPerks and benefits:\nCompetitive salary, performance-based incentives, and token allocation grant\n\nOpportunity to work on multi-billion dollar products as part of a small team\n\nHealth, dental, and vision insurance plans\n\nGlobal team with opportunity for travel and working out of our 3 offices around the world\n\n4 weeks work from anywhere\n\nExciting company events and team-building off-sites","description_format":"text","description_chars":2709,"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":["Company events","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"},{"name":"Cayman Islands","iso":"KY","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["DeFi","Blockchain Infrastructure"],"lifecycle":[{"event":"open","at":"2026-09-06T09:56:33Z"},{"event":"close","at":"2026-09-10T01:57:06Z"},{"event":"reopen","at":"2026-11-09T21:15:52Z"}],"visa":[],"liveness":{"score":32,"band":"fade","label":"Fading","p_open":1,"p_active":0.729,"p_room":0.44,"age_days":224,"expected_fill_days":159,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-11-14T05:58:10Z"},"pay":{"stated_usd_annual":200000,"is_top_pay":true},"html_url":"https://alion.io/job/ether-fi-backend-engineer-card-transaction-processing","json_url":"https://alion.io/job/ether-fi-backend-engineer-card-transaction-processing.json","meta":{"generated_at":"2026-11-15T05:32:40Z","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":728,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-16T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":175614},"rest":"https://alion.io/mcp/rest/get_company?id=175614"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fether-fi-backend-engineer-card-transaction-processing"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"free","price":{"credits":0,"usd":0},"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%2Fether-fi-backend-engineer-card-transaction-processing"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fether-fi-backend-engineer-card-transaction-processing"},{"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/ether-fi-backend-engineer-card-transaction-processing\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fether-fi-backend-engineer-card-transaction-processing"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":456917}},{"tool":"search_jobs","arguments":{"company":"ether.fi","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":456917},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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