{"id":2587747,"url":"https://alion.io/job/alliance-for-recruitment-senior-full-stack-developer-2","title":"Senior Full Stack Developer","company":{"id":4425623,"name":"Alliance for Recruitment","domain":"afr.lt","url":"https://alion.io/company/alliance-for-recruitment","size_band":"11-50","is_staffing_agency":true,"employer_type":"agency","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":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Vilnius, Lithuania"],"countries":["LT"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":5000,"max":8000,"currency":"EUR","period":"month","gross":true,"usd_annual":106764},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Clean Architecture","optional":false},{"name":"Function Calling","optional":false},{"name":"LLM","optional":false},{"name":"Nest.JS","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"React.js","optional":false},{"name":"Tool Use","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-14T13:10:58Z","employer_posted_date":null,"last_verified_at":"2026-10-14T13:10:58Z","board_verified":false,"closed_at":null,"days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"Job descriptionAbout the job\n\nThe Senior Full Stack Engineer builds and ships AI product features end to end, from LLM workflows on the backend to intuitive interfaces on the frontend. The role is key to making Sintra's AI helpers reliable, scalable and easy to use. It's a new position in the Engineering department and suits someone who can deliver on their own in a fast-moving team.\n\nJob description\n\nBuild and maintain AI product features across frontend and backend using TypeScript, Node.js and React.\n\nDevelop reliable LLM workflows, including tool calling, prompt engineering, error handling and fallback logic.\n\nCreate user-friendly frontend interfaces for complex AI functionality in collaboration with designers.\n\nImplement logging, monitoring and clean architecture to ensure system reliability and scalability.\n\nContribute to code reviews, technical discussions and team collaboration while independently delivering features.\n\nRequirements3+ years of back-end experience with TypeScript and Node.js (NestJS or Next.js).\n\nExperience in front-end development with React.\n\nKnowledge of SaaS business models.\n\nExperience working in a fast-paced environment.\n\nProficiency in English.\n\nNice to have:\n\nExperience with LLM integrations, including tool calling, function definitions and prompt engineering.\n\nExperience implementing payment and subscription systems in web applications.\nCompany offersEquity package: a share in the company’s long-term success.\n\nFlexible working model that supports a healthy work–life balance.\n\nPrivate health insurance.\n\nWorkout sessions with a personal trainer.\n\nFree lunch in the office every workday.","description_format":"text","description_chars":1642,"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":["Flexible schedule","Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-15T04:31:44Z"}],"visa":[],"liveness":{"score":54,"band":"ok","label":"Likely open","p_open":1,"p_active":0.542,"p_room":1,"age_days":0,"expected_fill_days":26,"reasons":["seen:0","agency","velocity","win:early"],"computed_at":"2026-10-15T05:46:00Z"},"pay":{"stated_usd_annual":106764,"is_top_pay":false},"html_url":"https://alion.io/job/alliance-for-recruitment-senior-full-stack-developer-2","json_url":"https://alion.io/job/alliance-for-recruitment-senior-full-stack-developer-2.json","meta":{"generated_at":"2026-10-15T10:15:46Z","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":15531,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":4425623},"rest":"https://alion.io/mcp/rest/get_company?id=4425623"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Falliance-for-recruitment-senior-full-stack-developer-2"},{"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%2Falliance-for-recruitment-senior-full-stack-developer-2"},{"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%2Falliance-for-recruitment-senior-full-stack-developer-2"},{"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/alliance-for-recruitment-senior-full-stack-developer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Falliance-for-recruitment-senior-full-stack-developer-2"}]}