{"id":3405162,"url":"https://alion.io/job/combinegr-leadsenior-rust-engineer","title":"Lead/Senior Rust Engineer","company":{"id":4483439,"name":"Combinegr","domain":"combinegr.com","url":"https://alion.io/company/combinegr","size_band":"201-500","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"B","score":75,"open_postings":9,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-05T05:54:30Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["BR"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":97000,"max_usd":244000,"period":"year","method":"global_role_seniority_cell","sample_n":2257},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Axum","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"gRPC","optional":false},{"name":"Rest API","optional":false},{"name":"Ruby","optional":false},{"name":"Rust","optional":false},{"name":"SQL","optional":false},{"name":".NET","optional":true},{"name":"ETL/ELT","optional":true}],"status":"live","first_seen_at":"2026-10-14T14:17:46Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-11-05T20:04:16Z","board_verified":true,"closed_at":null,"days_open":22,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":22},"description":"Lead Rust Engineer\nBrazil (100% Remote)\nEngineering\nB2B Contract\nAbout the role\nA US-headquartered software product development company (300+ people across the US, LATAM and Europe) is hiring a Lead Rust Engineer for a long-term engagement with a leading US healthcare SaaS client. You’ll own the technical direction of the service and API layer of a next-generation data platform, building new services in Rust (with some C#) while parts of the current platform still run on Ruby.\nWhat you’ll do\nSet technical direction and own architecture and API design for the new service layer.\n\nBuild and maintain backend services and APIs, primarily in Rust.\n\nMigrate existing C# and Ruby clients to the new API surface with minimal disruption.\n\nLead code quality through reviews and work closely with client engineering leads.\n\nMust have\n8+ years of backend experience building production services and APIs, ideally with tech lead experience.\n\nCommercial Rust experience with async services (Tokio, Axum or Actix).\n\nWorking knowledge of Ruby.\n\nStrong API design skills (REST/gRPC, versioning, backward compatibility).\n\nSolid SQL, relational databases, testing, CI/CD and observability.\n\nExperience driving AI-assisted/agentic coding practices across a team.\n\nFluent English.\n\nNice to have\nC#/.NET, API migrations or strangler-pattern rewrites, data sync or ETL, and regulated industries.\nStrong Lead/Principal Engineers or Architects without direct Rust experience are also encouraged to apply.\nWhat we offer\n100% remote, long-term B2B contract (40h/week, 9 AM-5 PM BRT core hours), and a flexible policy of up to 40 unpaid days off per year.","description_format":"text","description_chars":1634,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Brazil","iso":"BR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-28T15:58:32Z"}],"visa":[],"liveness":{"score":49,"band":"ok","label":"Likely open","p_open":1,"p_active":0.542,"p_room":0.9,"age_days":21,"expected_fill_days":37,"reasons":["conf:10","agency","velocity","win:mid"],"computed_at":"2026-11-05T05:54:30Z"},"pay":null,"html_url":"https://alion.io/job/combinegr-leadsenior-rust-engineer","json_url":"https://alion.io/job/combinegr-leadsenior-rust-engineer.json","meta":{"generated_at":"2026-11-05T21:56:42Z","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":2355,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-06T00:00:00Z"}},"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":4483439},"rest":"https://alion.io/mcp/rest/get_company?id=4483439"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcombinegr-leadsenior-rust-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%2Fcombinegr-leadsenior-rust-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%2Fcombinegr-leadsenior-rust-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/combinegr-leadsenior-rust-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcombinegr-leadsenior-rust-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3405162}},{"tool":"search_jobs","arguments":{"company":"combinegr.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3405162},"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); 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