{"id":716589,"url":"https://alion.io/job/ellipsislabs-senior-backend-engineer","title":"Senior Backend Engineer","company":{"id":673500,"name":"Ellipsis Labs","domain":"ellipsislabs.xyz","url":"https://alion.io/company/ellipsislabs","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"D","score":52,"open_postings":10,"ghost_share":0.8,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-28T05:59:10Z"}},"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":170000,"max":250000,"currency":"USD","period":"year","gross":null,"usd_annual":250000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"C++","optional":false},{"name":"DeFi","optional":false},{"name":"Go","optional":false},{"name":"Rust","optional":false},{"name":"Solana","optional":false},{"name":"Unix","optional":false}],"status":"live","first_seen_at":"2024-02-20T21:24:40Z","employer_posted_date":"2024-02-20","last_verified_at":"2026-10-28T21:48:48Z","board_verified":true,"closed_at":null,"days_open":981,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":980},"description":"Ellipsis Labs is a profitable, venture-backed New York-based startup building sustainable and efficient DeFi protocols on high-throughput decentralized infrastructure. Our long-term goal is to build a better financial system.\nOur flagship product, Phoenix Perpetuals, brings professional-grade perpetual futures to Solana. Building on our experience developing efficient markets, Ellipsis Labs also operates SolFi, a proprietary automated market maker that provides efficient liquidity for key trading pairs. Our foundational product, Phoenix Legacy, is a limit order book on the Solana blockchain that established our expertise in operating high-performance markets. Combined, these products have facilitated over $285B in trading volume across Solana markets.\nEllipsis Labs is seeking a Senior Backend Engineer to join our team. As an early-stage startup, we appreciate bright generalists who can iterate and ship quickly. In this role, you will:\nBuild and maintain scalable production services. 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