{"id":3789129,"url":"https://alion.io/job/motif-staffprincipal-software-engineer-3d-modeling","title":"Staff/Principal Software Engineer, 3D Modeling","company":{"id":4394430,"name":"Motif","domain":"motif.io","url":"https://alion.io/company/motif-3","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"JavaScript","optional":false},{"name":"Rust","optional":false},{"name":"TypeScript","optional":false},{"name":"WebAssembly","optional":false}],"status":"closed","first_seen_at":"2026-09-15T19:25:53Z","employer_posted_date":"2026-09-15","last_verified_at":"2026-11-05T20:57:12Z","board_verified":false,"closed_at":"2026-11-05T20:57:12Z","days_open":51,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":51},"description":"Motif is building an agent-native platform for how buildings are designed and built. The Modeling team owns the modeling experience end to end - the UI, the data model, and the algorithms behind every building model in Motif. We connect an intuitive interface to a robust data model and fast algorithms, turning each user action into a reliable, high-performance modeling operation in 3D. And we build it as a platform: the features we ship have to work end to end today and also provide the capabilities to extend them.\nWe are seeking an experienced 3D application developer to help us build cutting-edge, high-performance web applications.\nYou will leverage your expert understanding of 3D modeling, full-stack development experience and passion to build robust software using modern languages and tech stacks such as Rust and WASM. You'll also bring a thoughtful approach to leveraging AI tools in your day-to-day work.\nWhat you will do\nDesign, develop, and maintain high-performance applications in Rust, drawing on the language's strengths in safety and performance.\nBuild the core data model, geometry, and graph algorithms that power our modeling platform - and the extension points that let others build on them.\nContribute across the stack as needed - Rust, WebAssembly, TypeScript.\nPartner with product managers and designers to clarify requirements and translate them into shipped features.\nOwn the quality of what you ship, with unit and integration tests that keep a fast-moving codebase correct.\nWhat you bring\nUnderstanding of the 3D modeling domain as applied to architecture, mechanical design, game development, or an adjacent field.\n5+ years building complex, production-quality software - - and no ceiling above that. \nProduction Rust experience, or depth in another systems language such as C++, with a strong understanding of memory management, concurrency, and performance optimization.\nComfort with the fundamentals this work rests on - linear algebra, computational geometry, graph algorithms, numerical robustness.\nExperience building web applications.\nExperience using AI-assisted development tools in real production work.\nComfort with startup pace - shipping real features against ambiguous requirements, and deciding what's worth building now versus later.\nExcellent problem-solving, communication, and collaboration skills.\nIt would be great if you had\nUnderstanding of design-by-composition and its applications in Rust.\nExperience with WebAssembly in a browser context - compiling Rust to WASM and integrating WASM modules into a JavaScript/TypeScript application.\nExperience in building and maintaining complex high-performance distributed systems\nExperience with TypeScript or JavaScript","description_format":"text","description_chars":2722,"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 States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Software","CAD, PLM & BIM Software","Architecture"],"lifecycle":[{"event":"open","at":"2026-11-05T05:28:03Z"},{"event":"close","at":"2026-11-05T20:57:12Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 2","filings_12m":2,"filings_prev_12m":0,"green_card_filings_12m":0,"median_offered_wage_usd":207500,"route":null,"cap_exempt":false,"checked_at":"2026-11-09T07:32:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":null,"pay":null,"html_url":"https://alion.io/job/motif-staffprincipal-software-engineer-3d-modeling","json_url":"https://alion.io/job/motif-staffprincipal-software-engineer-3d-modeling.json","meta":{"generated_at":"2026-11-09T10:42:21Z","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":11691,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-10T00:00:00Z"}},"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":4394430},"rest":"https://alion.io/mcp/rest/get_company?id=4394430"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmotif-staffprincipal-software-engineer-3d-modeling"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fmotif-staffprincipal-software-engineer-3d-modeling"},{"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%2Fmotif-staffprincipal-software-engineer-3d-modeling"},{"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/motif-staffprincipal-software-engineer-3d-modeling\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmotif-staffprincipal-software-engineer-3d-modeling"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3789129}},{"tool":"search_jobs","arguments":{"company":"motif.io","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3789129},"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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