{"id":716591,"url":"https://alion.io/job/ellipsislabs-senior-software-engineer","title":"Senior Software 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":"2026-10-29T05:49:05Z"}},"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":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"DeFi","optional":false},{"name":"Go","optional":false},{"name":"Rust","optional":false},{"name":"Solana","optional":false}],"status":"live","first_seen_at":"2024-01-30T20:53:25Z","employer_posted_date":"2024-01-30","last_verified_at":"2026-10-29T06:07:09Z","board_verified":true,"closed_at":null,"days_open":1002,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":1002},"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.\nThe Opportunity\nEllipsis Labs is seeking a Senior Software Engineer to join our team. In this role, you will:\nContribute to critical software systems at all parts of the stack\n\nDesign, develop, and deploy programs on the Solana blockchain\n\nMaintain a high bar of security, correctness, and thoughtfulness around the code\n\nWrite high-quality, maintainable, well-tested code with thorough documentation\n\nQualifications\nRequired\nExperience building software systems (preferably in Rust, C++, C, or Golang), with high-quality and well-documented production code\n\nA demonstrated track record of high agency, willingness to dive into unfamiliar technical and non-technical areas, and a team-first attitude\n\nPassion for decentralized finance\n\nPreferred\nBachelor’s degree in Computer Science or related technical field or equivalent practical experience\n\nExperience working with blockchain technology, preferably Solana\n\nExperience working with Rust","description_format":"text","description_chars":1703,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto","DeFi"],"lifecycle":[{"event":"open","at":"2026-09-11T06:12:15Z"},{"event":"open","at":"2026-09-25T20:27:42Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.281,"p_room":0.28,"age_days":1002,"expected_fill_days":26,"reasons":["conf:3","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-29T05:49:05Z"},"pay":{"stated_usd_annual":250000,"is_top_pay":true},"html_url":"https://alion.io/job/ellipsislabs-senior-software-engineer","json_url":"https://alion.io/job/ellipsislabs-senior-software-engineer.json","meta":{"generated_at":"2026-10-29T08:03:54Z","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":12382,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-30T00:00:00Z"}},"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":673500},"rest":"https://alion.io/mcp/rest/get_company?id=673500"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fellipsislabs-senior-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%2Fellipsislabs-senior-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%2Fellipsislabs-senior-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/ellipsislabs-senior-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fellipsislabs-senior-software-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":716591}},{"tool":"search_jobs","arguments":{"company":"ellipsislabs.xyz","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":716591},"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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