{"id":438179,"url":"https://alion.io/job/infinitus-ai-full-stack-engineer","title":"AI Full Stack Engineer","company":{"id":171833,"name":"Infinitus","domain":"infinitus.ai","url":"https://alion.io/company/infinitus","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":162000,"max_usd":310000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1268},"experience_years_min":8,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"C++","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"Java","optional":false},{"name":"Knowledge Graph","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"React.js","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"AI Agents","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-07-13T17:56:35Z","employer_posted_date":"2026-07-13","last_verified_at":"2026-10-23T15:01:57Z","board_verified":true,"closed_at":null,"days_open":101,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":101},"description":"Help Build the Future of Healthcare AI\nInfinitus is AI communications in service of patients.\nHealthcare is inherently complex and siloed. We’re pioneering agentic communications to connect the entire system - any stakeholder, any channel, inbound and out. The result is intelligent care that reduces patient anxiety, increases speed to treatment, and enables teams to scale impact without stretching resources.\nOur system combines industry-leading safety guardrails with the largest dynamic knowledge graph built on millions of real-world interactions. It’s why 44% of the healthcare Fortune 50 trusts Infinitus to turn fragmented touchpoints into seamless care for better patient outcomes.\nThe Mission\nAt Infinitus, our mission is simple: create time for healthcare by making access, adherence, and affordability easier than ever. We’ve automated over 7 million calls and 100M+ minutes of conversation - saving millions of hours for patients and providers.\nBacked by over $100M from top investors including Google Ventures, Kleiner Perkins, Andreessen Horowitz, and Coatue, we’re a team that challenges the status quo and moves fast at the intersection of AI and healthcare. Infinitus was recently named to Fast Company's World's Most Innovative Companies and Business Insider’s top startups in healthcare.\nYour Role\nWe are looking for a senior Fullstack Software Engineer to help us design, build, and scale the core of our digital health platform. You’ll work on expanding the capabilities of Eva, our AI-powered health assistant, and build systems that automate and simplify healthcare administration at scale. This role blends hands-on backend development with opportunities to lead and influence technical direction and mentor teammates.\nYour Impact\nDesign, build, and scale AI-powered, user-facing products that make Eva’s healthcare interactions more intelligent, intuitive, and reliable.\n\nLead the end-to-end delivery of complex full-stack product experiences, from frontend architecture and backend services to APIs, data integrations, and production workflows.\n\nPartner closely with Product, Design, Data Science, Infrastructure, and other engineering teams to bring AI capabilities into real user workflows in a practical, scalable, and measurable way.\n\nTranslate ambiguous product and AI opportunities into clear technical plans, balancing speed, user experience, reliability, safety, and long-term maintainability.\n\nBuild robust systems that connect application logic, data pipelines, model outputs, and human-centered product experiences.\n\nEvaluate and integrate AI technologies, including LLM-enabled workflows, retrieval systems, classification, summarization, automation, and decision-support experiences where appropriate.\n\nEstablish strong frontend and backend engineering standards, including component architecture, API design, system reliability, observability, testing, and development best practices.\n\nMake high-quality technical tradeoffs across product impact, engineering complexity, scalability, and long-term platform health.\n\nDrive cross-team and cross-org alignment to ship high-impact work, influencing through technical clarity, judgment, and collaboration rather than authority.\n\nMentor and grow engineers across the team, raising the bar for technical execution, product thinking, and engineering culture.\n\nContribute to both short- and long-term technical roadmaps, especially around AI-enabled product development, platform scalability, and full-stack architecture.\n\nHelp shape how Eva responsibly applies AI in healthcare workflows, with a focus on usefulness, trust, reliability, and excellent user experience.\n\nYour Skillset\n8+ years of practical full-stack engineering experience\n\nA track record of leading the design and delivery of complex consumer or B2B user-facing products across the full stack.\n\nDeep expertise in modern frontend and backend development, with strong proficiency in technologies such as React, TypeScript, Python, Go, Java, C++, or similar.\n\nStrong experience designing scalable APIs, backend services, data models, integrations, and distributed systems.\n\nHands-on experience with cloud infrastructure and modern DevOps practices, ideally across AWS, GCP, or similar environments.\n\nSolid understanding of database technologies, including SQL and NoSQL systems, with experience optimizing for performance, reliability, and scale.\n\nPractical familiarity with AI-enabled product development, such as LLM integrations, model orchestration, prompt/system design, retrieval-augmented generation, evaluation workflows, or AI-assisted automation.\n\nStrong product judgment and a user-centered approach to building solutions that are robust, scalable, trustworthy, and easy to use.\n\nExperience working in early-stage startups or similarly fast-moving, rapidly evolving environments; ideally, you have built products from 0 to 1.\n\nAbility to navigate ambiguity, define technical direction, and deliver high-quality products in fast-paced environments.\n\nDemonstrated success driving cross-team or cross-org alignment to get impactful work shipped.\n\nExperience establishing engineering standards, component architectures, reusable patterns, and development best practices.\n\nLeads through mentorship, actively developing peers and junior engineers while fostering a collaborative, high-performing engineering culture.\n\nEntrepreneurial mindset: you take initiative, operate with ownership, and drive projects from concept through production impact.\n\nNice to Have\nExperience building AI-powered products in healthcare, fintech, enterprise SaaS, or other high-trust domains.\n\nExperience with evaluation, monitoring, and reliability practices for AI systems in production.\n\nFamiliarity with healthcare data, clinical workflows, privacy-sensitive systems, or regulated environments.\n\nExperience building internal platforms or tooling that accelerate AI product development across engineering teams.\n\nWhy You’ll Love It Here\nPlease Note: the following benefits are for salaried employees\nHybrid work (SF office Mon/Tues/Thurs) + catered lunches (Bay Area Positions only)\n\nCompetitive salary, equity, and 401(k)\n\nWellness stipend & great benefits (medical, dental, vision)\n\nGenerous PTO & parental leave\n\nBi-annual offsites & a collaborative, mission-driven culture\n\nWhat to Expect in the Interview Process\nApply & meet our recruiting team\n\nVirtual interviews to showcase your skills\n\nFinal onsite loop to meet the team and get to know us better\n\nChat with our CEO\n\nCurious to Learn More?\nRead our Blog to hear from Infinauts about what we’re building\n\nDiscover how our company values (CODES) guide us\n\nFollow our CEO, Ankit Jain, for industry updates\n\nWe’re building AI agents that tackle healthcare’s toughest problems and open new possibilities. Ready to join us? Let’s talk!\nInfinitus Systems is committed to providing an environment of mutual respect where equal employment opportunities are available to all applicants and teammates without regard to race, color, religion, sex, pregnancy (including childbirth, lactation and related medical conditions), national origin, age, physical and mental disability, marital status, sexual orientation, gender identity, gender expression, genetic information (including characteristics and testing), military and veteran status, and any other characteristic protected by applicable law. Infinitus Systems believes that diversity and inclusion among our teammates is critical to our success as a global company, and we seek to recruit, develop and retain the most talented people from a diverse candidate pool.\n Please Note: Applicants must be authorized to work in the US without employer sponsorship.","description_format":"text","description_chars":7694,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Hybrid work","Parental leave"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["AI Agents","Patient Access & Booking"],"lifecycle":[{"event":"open","at":"2026-09-06T07:17:14Z"}],"visa":[],"liveness":{"score":25,"band":"fade","label":"Fading","p_open":1,"p_active":0.705,"p_room":0.36,"age_days":101,"expected_fill_days":63,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-23T05:54:15Z"},"pay":null,"html_url":"https://alion.io/job/infinitus-ai-full-stack-engineer","json_url":"https://alion.io/job/infinitus-ai-full-stack-engineer.json","meta":{"generated_at":"2026-10-23T17:53:12Z","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":27153,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"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":171833},"rest":"https://alion.io/mcp/rest/get_company?id=171833"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Finfinitus-ai-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%2Finfinitus-ai-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%2Finfinitus-ai-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/infinitus-ai-full-stack-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Finfinitus-ai-full-stack-engineer"}]}