{"id":2942253,"url":"https://alion.io/job/butter-milk-lead-engineer","title":"Lead Engineer","company":{"id":3894318,"name":"Butter Milk","domain":"buttermilk.com","url":"https://alion.io/company/buttermilk","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","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":75000,"max_usd":124000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":109},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"FastAPI","optional":false},{"name":"GCP","optional":false},{"name":"GDPR","optional":false},{"name":"GitHub Actions","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Google Cloud Run","optional":false},{"name":"LLM","optional":false},{"name":"Multimodal AI","optional":false},{"name":"Next.js","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"SOC 2","optional":false},{"name":"SQL","optional":false},{"name":"SQLModel","optional":false},{"name":"Structured Outputs","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-10-20T14:48:20Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-11-01T17:40:47Z","board_verified":true,"closed_at":null,"days_open":12,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":12},"description":"Lead Engineer\nLondon\nPermanent\nWe run the campaigns ourselves, so we know exactly what the software has to do.\nButtermilk is a London creator-marketing agency. Pantry is the platform our team, our creators and our clients use to run campaigns end to end. It is live with our internal team today. The demand is already here: every campaign we run is waiting on this platform.\nWhy this is different\nSearch and reporting are table stakes. The hard part is the operational core: shortlists clients actually approve, outreach that lands, creators paid on time, and AI that understands the Creator.\nMost creator platforms are built by people who have never run a campaign. Ours is built next to the team that runs them every day.\nWhat you'd own\nThe platform that takes Pantry from alpha to what the whole agency runs on. If you want to point at a platform in production and say you built it, this is that seat.\nYou code every day, set the architecture and work as the product partner to Matt, our Product Lead.\nBuild. Ship vertical slices that real users can try, quickly but built to last. Direct AI coding agents and review their output critically.\n\nDecide. Own the architecture and scaling calls, and keep one source of truth for how the system fits together.\n\nRun it. Own observability and alerting, and step in when production misbehaves.\n\nPartner on product. Break epics into stories, flag dependencies early, challenge the roadmap and demo to the business.\n\nPlan honestly. Say what one engineer can deliver by a given date, and say early when that is not enough.\n\nGrow the team. Decide when we need more engineers, then hire and lead them.\n\nAlong the way: the production basics, creator and campaign intelligence with our data science lead, and integrations for CRM, payments, outreach and invoicing, on a path to SOC 2.\nThe team you'd join\nProduct Lead\n\nFull Stack Engineer\n\nData Science Lead\n\nThe campaign team: our daily users, at the next desk.\n\nHow we work\nDecisions are written down and shipped, not held in meetings. We build agent-first and test-driven, in small pull requests, with everything in code, infrastructure included.\nWhat we're looking for\nWe are hiring at lead level, to build and to stay. There is no senior engineer above you.\nYou have built and scaled a production product to 10,000+ users, and made its architecture calls\n\nYou ship in vertical slices, fast but without building things that fall over a month later\n\nYou use AI coding tools every day, can refactor a largely agent-written codebase, and read what the agents produce\n\nYou have shipped LLM features to production, not just prototypes: structured output, validation, batch versus live calls, cost per item and evaluation\n\nYou have built for external users: authentication, data isolation between clients, payments and GDPR\n\nYou build rapport quickly with non-engineers and explain trade-offs plainly\n\nYou like being in the office with the people who use what you build\n\nStrong plus: multimodal AI (video, image, audio); Python and FastAPI; Google Cloud, Terraform and CI/CD; ingestion from third-party APIs; email deliverability; SOC 2; creator-economy or agency experience.\nTransferable experience counts. If your architecture and scaling experience carries over, the exact stack matters less.\nYou probably won't enjoy this if\nYou want detailed specs before you start\n\nYou would rather design systems than build and run them\n\nYou want a specialist for every layer\n\nYou trust AI-written code without reading it\n\nStack\nPython services (FastAPI, SQLModel) and a Next.js/TypeScript app on Google Cloud: Cloud Run, Cloud SQL Postgres, BigQuery and Pub/Sub, all in Terraform and deployed from GitHub Actions. It's early enough that you will shape it.\nWhat We Offer\nPension, matching contributions\n\nPrivate Medical Insurance\n\nJuno Wellbeing Credits\n\nHybrid Working (London)\n\n£150 Home Office Setup Budget\n\nNight Key Membership\n\nBirthday Leave\n\nLearning & Development Budget","description_format":"text","description_chars":3953,"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":["Health insurance","Home office","Hybrid work"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Digital Media","Creator & Fan Platforms"],"lifecycle":[{"event":"open","at":"2026-10-20T17:39:59Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"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":"2026-10-31T06:23:40+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":75,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.835,"p_room":0.9,"age_days":11,"expected_fill_days":30,"reasons":["conf:3","win:mid"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/butter-milk-lead-engineer","json_url":"https://alion.io/job/butter-milk-lead-engineer.json","meta":{"generated_at":"2026-11-01T19:49:34Z","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":30479,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-02T00:00:00Z"}},"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":3894318},"rest":"https://alion.io/mcp/rest/get_company?id=3894318"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fbutter-milk-lead-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%2Fbutter-milk-lead-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%2Fbutter-milk-lead-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/butter-milk-lead-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fbutter-milk-lead-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2942253}},{"tool":"search_jobs","arguments":{"company":"buttermilk.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2942253},"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. Docs: https://alion.io/developers"}}