{"id":858489,"url":"https://alion.io/job/messa-senior-full-stack-engineer","title":"Senior Full Stack Engineer","company":{"id":680574,"name":"Messa","domain":"messa.ai","url":"https://alion.io/company/messa","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":3,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-09-28T05:45:00Z"}},"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":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["AR"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":46000,"max_usd":125000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":4821},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"LLM","optional":false},{"name":"TypeScript","optional":false},{"name":"Agentic Workflows","optional":true},{"name":"AWS","optional":true},{"name":"Docker","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2025-12-18T18:20:39Z","employer_posted_date":"2025-12-18","last_verified_at":"2026-09-28T12:49:00Z","board_verified":true,"closed_at":null,"days_open":284,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":283},"description":"Role Overview\nWe're looking for a Senior Full Stack Engineer to help design, build, and ship core parts of our product. You'll work across the entire stack, with a strong emphasis on crafting polished, intuitive user experiences, while also building reliable backend systems and integrating AI deeply into the product.\nWe’re an early stage full of energy team. Everyone wears multiple hats, moves fast, and cares deeply about what we're building. We need someone with a product mindset: not just an engineer who executes specs, but someone who thinks about why we're building something and how users will experience it.\nWhat You'll Do\nBuild and own end-to-end product features across the full stack.\n\nDesign and implement clean, high-performance user interfaces. This is where your craft shines.\n\nDevelop and maintain robust APIs and backend services.\n\nIntegrate AI agents and LLM-powered workflows into the product.\n\nParticipate in code reviews and help maintain a high quality bar across the codebase.\n\nThink like a product builder: bring ideas, question assumptions, and help shape what we ship.\n\nWhat We're Looking For\nMust-haves:\nExpert-level proficiency in React and modern TypeScript.\n\nBasic backend experience. You're comfortable designing APIs and working with server-side systems.\n\nSharp eye for UI/UX. You build interfaces that feel polished and intuitive, not just functional.\n\nExperience working with AI/LLM tools in your workflow and integrating AI capabilities into product features.\n\nProduct mindset. You think about the user, not just the ticket.\n\nHigh-quality code output with minimal review overhead.\n\nComfort with ambiguity and speed in an early-stage environment.\n\nNice to have:\nExperience building SaaS products from early stages.\n\nPython coding skills.\n\nExperience building browser extensions.\n\nExperience with desktop app development (Electron, Qt, etc.).\n\nFamiliarity with AWS or another major cloud platform.\n\nExperience using Docker across development and production.\n\nExperience with AI agent orchestration or agentic workflows.","description_format":"text","description_chars":2056,"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":"Argentina","iso":"AR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-13T08:14:29Z"},{"event":"open","at":"2026-09-25T15:39:11Z"}],"liveness":{"score":3,"band":"cold","label":"Long shot","p_open":1,"p_active":0.096,"p_room":0.28,"age_days":283,"expected_fill_days":30,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-09-28T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/messa-senior-full-stack-engineer","json_url":"https://alion.io/job/messa-senior-full-stack-engineer.json","meta":{"generated_at":"2026-09-28T22:09:04Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":164,"day_limit":5000,"remaining_today":4836,"minute_limit":60,"resets_at":"2026-09-29T00:00:00Z"}}}