{"id":3789128,"url":"https://alion.io/job/motif-staffsenior-software-engineer-cad-app-full-stack","title":"Staff/Senior Software Engineer, CAD App (Full stack)","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":"staff","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":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"Rust","optional":false},{"name":"TypeScript","optional":false},{"name":"WebAssembly","optional":false}],"status":"closed","first_seen_at":"2026-10-29T01:47:14Z","employer_posted_date":"2026-10-29","last_verified_at":"2026-11-05T20:57:12Z","board_verified":false,"closed_at":"2026-11-05T20:57:12Z","days_open":7,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":7},"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, leveraging the language's strengths in safety, concurrency, and performance.\nContribute across the stack as needed - React, TypeScript, WebAssembly.\nPartner with product managers and user experience designers to clarify requirements and to translate them to software features.\nMaintain necessary automated test coverage by implementing unit and integration tests.\nWhat you bring:\nUnderstanding of 3d modeling domain as applied to architecture, mechanical design, game development or an adjacent field.\n5+ years of experience developing complex, production-quality software products.\nProduction-level Rust or other object-oriented development experience, with a strong understanding of memory management, concurrency, and performance optimization.\nProficiency in at least one additional language (JavaScript, TypeScript) for contributing across the stack.\nExperience building web applications\nExperience using AI-assisted development tools in real production work.\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 - 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