{"id":415370,"url":"https://alion.io/job/scalar-senior-fullstack-engineer","title":"Senior Fullstack Engineer","company":{"id":288567,"name":"Scalar","domain":"scalar.com","url":"https://alion.io/company/scalar-3","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":{"label":"UTC-8 – UTC+2","utc_offset_min":-8,"utc_offset_max":2},"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["CA"],"hiring_countries_total":1,"salary":{"min":150000,"max":250000,"currency":"CAD","period":"year","gross":null,"usd_annual":175444},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Git","optional":false},{"name":"Go","optional":false},{"name":"Java","optional":false},{"name":"Linux","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Offline-First","optional":false},{"name":"PHP","optional":false},{"name":"Postman","optional":false},{"name":"Python","optional":false},{"name":"Ruby","optional":false},{"name":"Rust","optional":false},{"name":"TypeScript","optional":false},{"name":"Vercel AI SDK","optional":false},{"name":"Vertex AI","optional":false},{"name":"Vue.js","optional":false},{"name":"Windows","optional":false},{"name":"JavaScript","optional":true},{"name":"LLM","optional":true},{"name":"Vite","optional":true}],"status":"live","first_seen_at":"2024-12-02T13:49:53Z","employer_posted_date":"2024-12-02","last_verified_at":"2026-10-29T04:33:22Z","board_verified":true,"closed_at":null,"days_open":695,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":695},"description":"About Scalar:\nBuilding on a great API is one of the best feelings in software - every interface you want is right there, and it all just works. Building on a bad one is the opposite: out-of-date docs, no SDK in your language, no MCP server. We started Scalar to fix that.\nWe're a small team (around ten engineers and designers) who wear a lot of hats and obsess over our craft. We think every company deserves Stripe-level docs, SDKs, and MCP servers from day zero - not just the ones with a platform team to build them. Open-source is in our DNA: our whole team contributes to and maintains repositories across the API ecosystem, including the standards everyone relies on, like OpenAPI.\nWe keep things lean and move without layers of process - engineers pick up problems, talk to each other, and ship. We're looking for owners with high agency: people who see what needs doing and do it. If you do your best work with a lot of autonomy and very little ego, you'll feel at home here.\nThe role\nYou'll work across the entire product surface - Docs, SDKs, the API Client, and Agent Scalar (our MCP servers) - shipping features from the API all the way to a polished UI. This is a high-ownership role for someone who likes to take something from an idea to production and out the door, then keep making it better.\nAs a senior engineer, you'll also raise the bar for the people around you - through code review, design discussions, and good defaults - without becoming anyone's manager.\nWhat you'll work on\nA modern TypeScript stack, end-to-end\n\nDocs - the documentation platform: Markdown/MDX, OpenAPI and AsyncAPI references, two-way Git sync, and AI/MCP chat, owned from backend to UI\n\nSDK generation - turning a customer's OpenAPI document into type-safe client libraries across TypeScript, Rust, Python, Go, PHP, Java, and Ruby.\n\nThe API Client - our open-source, offline-first Postman alternative, built on open standards and shipping across macOS, Windows, and Linux\n\nAgent Scalar - secure MCP servers and AI features for chatting with APIs, built on the Vercel AI SDK, the MCP SDK, and Vertex AI\n\nYou might be a fit if\nYou're a strong generalist who has shipped real product end to end, and you've operated at a senior level on a TypeScript-heavy stack\n\nYou can take broad ownership of a feature - from conception to production deployment - and move between areas as the work demands\n\nYou're comfortable in a modern frontend framework and happy working in Vue 3 (or ramping into it quickly)\n\nYou make decisions and communicate them clearly without waiting to be told what to do\n\nYou care about craft and developer experience, and you'd rather collaborate to the right answer than win the argument\n\nYou operate with a high level of kindness and clear communication\n\nNice to have\nExperience building developer tools, or working with OpenAPI and JSON Schema\n\nVue 3 / Vite depth, and a feel for server- and static-rendered front ends\n\nExperience with real-time or collaborative editing (CRDTs, Yjs, or similar)\n\nExperience shipping AI/LLM or MCP-powered product features\n\nAn in-house-first instinct - we build our own tooling and work hard to reduce external dependencies\n\nWhere we work\nRemote. Most of the team overlaps with US time zones (PT-ET), and we prefer candidates in the US or Western Canada for that overlap. If you're a strong fit in a European time zone and can make the overlap work, apply anyway and say so.\nWe're fully remote and offer flexible, unlimited time off. We believe prioritizing the team's well-being makes the work better and more meaningful.\nOther Notes:\nWhile the role will involve a significant portion of backend service management, the candidate will also be expected to contribute to the frontend and may be asked to lead the development of new features in either space.\n\nWe are a small team of 10 developers and wear many hats. We expect everyone to pitch in and help out where needed.\n\nWe are open to both fixed-term contract and full-time permanent positions. Compensation Range: $150-250k (CAD)/$105-180 (USD) based on experience","description_format":"text","description_chars":4067,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Canada","iso":"CA","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Custom Software Development","Developer Tools"],"lifecycle":[{"event":"open","at":"2026-09-06T02:58:53Z"},{"event":"open","at":"2026-09-26T18:46:46Z"}],"visa":[],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.174,"p_room":0.28,"age_days":695,"expected_fill_days":29,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-29T05:49:05Z"},"pay":{"stated_usd_annual":175444,"is_top_pay":false},"html_url":"https://alion.io/job/scalar-senior-fullstack-engineer","json_url":"https://alion.io/job/scalar-senior-fullstack-engineer.json","meta":{"generated_at":"2026-10-29T05:59:58Z","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":9121,"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":288567},"rest":"https://alion.io/mcp/rest/get_company?id=288567"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fscalar-senior-fullstack-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%2Fscalar-senior-fullstack-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%2Fscalar-senior-fullstack-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/scalar-senior-fullstack-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fscalar-senior-fullstack-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":415370}},{"tool":"search_jobs","arguments":{"company":"scalar.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":415370},"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. Docs: https://alion.io/developers"}}