{"id":1086007,"url":"https://alion.io/job/delfa-founding-engineer","title":"Founding Engineer","company":{"id":676876,"name":"Delfa","domain":"delfa.ai","url":"https://alion.io/company/delfa-2","size_band":"1-10","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":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":68000,"max_usd":154000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":25},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Anthropic","optional":true},{"name":"Azure","optional":true},{"name":"FastAPI","optional":true},{"name":"Honeycomb","optional":true},{"name":"OpenAI","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Python","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-09-21T04:34:49Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-11-10T10:01:20Z","board_verified":true,"closed_at":null,"days_open":50,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":50},"description":"About Delfa\nBillions of people still suffer from every-day diseases.\nOne key reason? Clinical trials are broken.\nDespite $120 billion spent each year, most trials are delayed due to bottlenecks like patient recruitment.\nDelfa is fixing this with autonomous AI agents. We're building AI agents to automate clinical trials.\nIn the last year from we’ve already:\nDeployed onto 500+ trials across multiple conditions\n\nReached seven figures in ARR,growing 25% MoM\n\nRaised an oversubscribed $3.8m seed from tier-one AI investors\n\nWhat You'll Do\nYou'll build and scale the core systems that enable Delfa's AI agents to deliver real-world clinical impact.\nDesign, build, and scale AI agent systems end-to-end: from voice interactions to intelligent workflow orchestration across trial sites\n\nOwn complex projects from architecture to deployment, with real autonomy over technical decisions\n\nBuild and evolve the infrastructure, observability, and monitoring systems needed to ensure quality and reliability at scale\n\nIntegrate leading-edge models from AI labs into production workflows, evaluating and adopting new capabilities as the frontier moves\n\nDesign robust data pipelines for ingesting, transforming, and serving high-quality healthcare data\n\nContinuously improve internal AI tooling and platform to unlock new use cases and increase team velocity\n\nOur current tech stack:\nFastAPI · Pydantic · TypeScript · React · OpenAI / Anthropic · Temporal · PostgreSQL · Honeycomb · PlanetScale · Azure\nYou'll Be A Great Fit If…\nYou have 3+ years of professional full-stack engineering experience: We're looking for somebody comfortable with solving hard technical problems, refactoring when needed, and knowing what's enough and what's too much to solve a problem.\n\nA track record of building high-quality products fast: Delfa's got big ambitions to materially accelerate getting life saving treatments to market. This is necessary and urgent work so we need individuals who can deliver.\n\nAn ownership mindset: We position our team to understand customer problems, give you the autonomy to find the best path forward, and expect you to own the solutions.\n\nA growth mindset: We're looking for people who take pride in their work and are always looking to improve it. If your work doesn't matter to you, it won't end up mattering to our customers. If you're not growing, your impact won't grow either.\n\nLife at Delfa\nDelfa is building a generational company to transform the way medications reach millions of patients in need.\nThis is your opportunity to get in on the ground floor and work alongside the highest talent density team in the space, onsite at our London office 5 days a week:\nA wine-snob who built foundation models at Roche during ETH Zurich PhD\n\nA former hedge fund trader with world class causal AI knowledge\n\nA medical doctor turned AI engineer who builds prototypes on the weekend for fun\n\nA ginger bloke who deployed production AI for J&J, Medtronic, and Exscientia\n\nWhat We Offer\nCompetitive salary + meaningful equity\n\nPrivate health insurance and gym membership\n\n25 days’ holiday + UK public holidays\n\nModern office space 5 mins from Old Street station\n\nTrue 0 → 1 ownership. You’ll take full responsibility for critical product features that get new treatments to patients, faster.\n\nOur Hiring Process\nWe work to get you an offer within a week with the following lean process:\nIntro chat withGustav (CTO) - 30 mins: An informal discussion about your experiences, values, and career goals, and give you an opportunity to get a sense of the role and the team. After this call we may ask you to share some work you’re proud of.\n\nCoding Challenge - 90 mins: No artificial interview questions. Instead, you will work through a real-world challenge similar to problems we solve every day. You are welcome to use AI tools. We believe great engineers should know how to solve problems effectively, including with AI.\n\nSystem Design Challenge - 90 mins: We will invite you to our office to spend time with us in person. Together, we will work through a real-world system design problem. This is the best opportunity for you to see what it would be like to work with us, and for us to understand how you think and collaborate.\n\nOffer. If all the above goes well then you’ll receive an offer from us!\n\nIf helping unstick clinical trials and getting life-saving treatments to patients faster sounds like your idea of important work, let’s talk.","description_format":"text","description_chars":4443,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Gym membership","Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Machine Learning","Clinical Trial Services (CRO)"],"lifecycle":[{"event":"open","at":"2026-09-21T09:07:29Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Licensed UK visa sponsor (Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker","cap_exempt":false,"checked_at":"2026-11-10T11:34:35+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":15,"band":"cold","label":"Long shot","p_open":1,"p_active":0.334,"p_room":0.45,"age_days":50,"expected_fill_days":28,"reasons":["conf:2","win:tail"],"computed_at":"2026-11-10T06:52:35Z"},"pay":null,"html_url":"https://alion.io/job/delfa-founding-engineer","json_url":"https://alion.io/job/delfa-founding-engineer.json","meta":{"generated_at":"2026-11-10T13:28:37Z","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":31346,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-11T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":676876},"rest":"https://alion.io/mcp/rest/get_company?id=676876"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fdelfa-founding-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fdelfa-founding-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fdelfa-founding-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/delfa-founding-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fdelfa-founding-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":1086007}},{"tool":"search_jobs","arguments":{"company":"delfa.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":1086007},"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. 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