{"id":1749656,"url":"https://alion.io/job/darwin-recruitment-lead-engineer-tech-lead-applications-4","title":"Lead Engineer / Tech Lead, Applications","company":{"id":2211481,"name":"Darwin Recruitment","domain":"darwinrecruitment.com","url":"https://alion.io/company/darwinrecruitment","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":{"grade":"B","score":75,"open_postings":16,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-01T06:10:25Z"}},"role":"Leadership","role_family":"Leadership","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Function Calling","optional":false},{"name":"LLM","optional":false}],"status":"live","first_seen_at":"2026-09-28T00:00:00Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-03T16:17:12Z","board_verified":false,"closed_at":null,"days_open":35,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":35},"description":"Tech Lead, Applications About the Role There are over 5 billion users using basic applications today such email, notes, tasks, calendar and they’re not AI-native. Our mission is to build proactive applications for anyone in the world, who are not used to complex prompting. We aim to bring intelligence to conversations, errands, organising and workflows, with minimal to no prompting. Our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion. We believe products will greatly reduce hallucinations Our objective is to organise anyone’s life, allowing us all to spend time on valuable and meaningful things As Technical Lead, AI Email App, you own the engineering layer that turns AI capability into a reliable product. You will shape the architecture across backend services, APIs, and client applications, while leading a small team of senior engineers. This is a hands-on leadership role. You stay close to the code, make critical architectural decisions, and ensure the system remains fast, reliable, and coherent as it scales. What You’ll Own\nOwn the application engineering strategy and execution across backend, mobile, and desktop.\nDesign reliable systems for AI-powered workflows, including state, orchestration, tool use, retries, fallbacks, and failure handling.\nBuild the APIs and abstractions that connect AI systems to real-world product experiences.\nLead a small, senior engineering team and raise the technical bar through design reviews, code reviews, and hands-on mentorship.\nMake high-impact trade-offs across latency, reliability, cost, security, and user experience.\nEstablish strong production foundations: observability, monitoring, testing, and operational excellence.\nPartner closely with ML leadership to turn model capabilities into robust, shippable product experiences.\nMove quickly while keeping the architecture simple, maintainable, and ready to scale. What We’re Looking For\nSignificant experience leading application or product engineering for complex systems.\nStrong hands-on background building and shipping backend systems used in production.\nExperience building AI-powered products or systems that integrate with modern ML/LLM capabilities.\nStrong technical judgment and the ability to make decisions with incomplete information.\nComfortable working across backend and client platforms, with deep expertise in at least one.\nA strong bias toward ownership, shipping, and learning from real-world usage.\nHigh standards for code quality, reliability, and engineering fundamentals. Outcomes\nProduction systems are observable, monitored, and stable under real-world load.\nDecisions consistently balance speed, cost, reliability, and user experience.\nFeatures across backend, mobile, and desktop work smoothly and reliably.\nLatency and reliability improve measurably over time. How We Work We are a small, high-talent-density, hands-on team. Engineers have broad ownership and are expected to exercise strong judgment and execute independently. We make decisions quickly, work closely together, and balance speed with engineering fundamentals. We care less about process and more about building something exceptional.\nDarwin Recruitment is acting as an Employment Agency in relation to this vacancy.\nVeronica Gains","description_format":"text","description_chars":3318,"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":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Biotechnology","Recruiting & Staffing","Employer of Record & PEO"],"lifecycle":[{"event":"open","at":"2026-10-03T08:00:26Z"}],"visa":[],"liveness":{"score":12,"band":"cold","label":"Long shot","p_open":0.4,"p_active":0.547,"p_room":0.55,"age_days":34,"expected_fill_days":28,"reasons":["conf:685","stale_co","urgency","velocity","win:tail","comp:brand"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/darwin-recruitment-lead-engineer-tech-lead-applications-4","json_url":"https://alion.io/job/darwin-recruitment-lead-engineer-tech-lead-applications-4.json","meta":{"generated_at":"2026-11-02T02:20:56Z","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":3481,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":2211481},"rest":"https://alion.io/mcp/rest/get_company?id=2211481"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fdarwin-recruitment-lead-engineer-tech-lead-applications-4"},{"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%2Fdarwin-recruitment-lead-engineer-tech-lead-applications-4"},{"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%2Fdarwin-recruitment-lead-engineer-tech-lead-applications-4"},{"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/darwin-recruitment-lead-engineer-tech-lead-applications-4\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fdarwin-recruitment-lead-engineer-tech-lead-applications-4"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":1749656}},{"tool":"search_jobs","arguments":{"company":"darwinrecruitment.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":1749656},"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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