{"id":3903807,"url":"https://alion.io/job/flex-senior-software-engineer-stablecoin-payments","title":"Senior Software Engineer, Stablecoin Payments","company":{"id":1910712,"name":"Flex","domain":"flex.one","url":"https://alion.io/company/flex-one","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":79,"open_postings":28,"ghost_share":0.357,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":56,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":170000,"max":280000,"currency":"USD","period":"year","gross":null,"usd_annual":280000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Smart Contracts","optional":true}],"status":"live","first_seen_at":"2026-11-07T00:04:39Z","employer_posted_date":"2026-11-07","last_verified_at":"2026-11-08T02:29:21Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":1},"description":"About the Role\nFlex is building stablecoin products for business owners, and we need engineers who can ship them. The team is small and moving fast, and you’ll be one of the first engineers to join. You’ll build the services that move customer money on-chain and connect them to the banking systems Flex already runs. That means real ownership, direct access to the engineering lead and product, and work that customers use.\nCrypto experience helps, but it isn’t required. Much of the work is strong fintech engineering: payments, onboarding, compliance, and reliability. If you’ve built that kind of system and want to learn the crypto side, we want to talk.\nWhat You'll Do\nDesign, build, and run backend services for stablecoin payments, including deposits, withdrawals, and on and off ramps\nIntegrate with partners for wallets, virtual accounts, and stablecoin orchestration\nBuild business onboarding (KYB) and compliance flows that stand up to banking audits\nConnect new stablecoin products to Flex’s existing banking, ledger, and payments systems\nOwn your work from design through launch and production support\nWork closely with product, design, compliance, and business development\nHelp set technical direction of the team’s roadmap \nOnboard and mentor new teammates \nRequirements\n5+ years of backend software engineering experience\nExperience building and running production services in fintech, payments, or banking\nExperience with compliance-driven systems such as KYB, KYC, AML, or audit requirements, and comfort working with compliance stakeholders\nStrong system design skills, especially for money movement: accuracy, reliability, and handling failures safely\nProficiency in a modern backend language \nComfortable owning problems end to end in a small, fast-moving team\nClear communicator with technical and non-technical partners\nNice to Haves\nHands-on crypto experience: stablecoins, wallets, custody, on-chain transactions, etc.\nExperience with on and off ramps, virtual accounts, or stablecoin orchestration\nSmart contract development or auditing experience\nPrior experience at a startup or high-growth company","description_format":"text","description_chars":2127,"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":[{"name":"United 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