{"id":3933032,"url":"https://alion.io/job/crystol-ai-remote-senior-full-stack-engineer","title":"[Remote] Senior Full-Stack Engineer","company":{"id":4525093,"name":"crystol ai","domain":"crystol.ai","url":"https://alion.io/company/crystol-ai","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"LLM","optional":false},{"name":"Next.js","optional":false},{"name":"tRPC","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-11-07T21:35:38Z","employer_posted_date":null,"last_verified_at":"2026-11-07T21:35:38Z","board_verified":false,"closed_at":null,"days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"Note: The job is a remote job and is open to candidates in USA. Crystol AI is hiring a Senior Full-Stack Engineer to build and maintain product features across its AI pipeline, customer-facing widget, and dashboard. The role also owns the embed/widget SDK developer experience, collaborates on product direction, and supports code quality through PR reviews.\n\nResponsibilities\nBuild and maintain product features end-to-end across Next.js, Convex, and our AI agent layer\nOwn the developer experience of our embed/widget SDK\nCollaborate with the founding team to shape product direction\nReview PRs and raise the bar for code quality across the codebase\n\nSkills\n5+ years of production experience with TypeScript and React\nStrong familiarity with server-side rendering and API design\nExperience shipping and maintaining complex SaaS products\nComfortable working in a fast-moving, ambiguous early-stage environment\nExperience with Convex, tRPC, or similar real-time data layers\nPrior work on AI/LLM product integration\nExperience building developer tools or SDKs\n\nBenefits\nRemote (US/EU)\n\nCompany Overview\n It was founded in undefined, and is headquartered in , with a workforce of 2-10 employees. Its website is https://www.crystol.ai.","description_format":"text","description_chars":1232,"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":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-11-08T03:36:15Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":30,"reasons":["seen:0","win:early"],"computed_at":"2026-11-08T05:51:25Z"},"pay":null,"html_url":"https://alion.io/job/crystol-ai-remote-senior-full-stack-engineer","json_url":"https://alion.io/job/crystol-ai-remote-senior-full-stack-engineer.json","meta":{"generated_at":"2026-11-08T05:51:25Z","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":12658,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-09T00:00:00Z"}},"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":4525093},"rest":"https://alion.io/mcp/rest/get_company?id=4525093"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcrystol-ai-remote-senior-full-stack-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%2Fcrystol-ai-remote-senior-full-stack-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%2Fcrystol-ai-remote-senior-full-stack-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/crystol-ai-remote-senior-full-stack-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcrystol-ai-remote-senior-full-stack-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3933032}},{"tool":"search_jobs","arguments":{"company":"crystol.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3933032},"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"}}