{"id":1713902,"url":"https://alion.io/job/checkatrade-marketplace-optimisation-lead","title":"Applied Scientist (Marketplace)","company":{"id":673215,"name":"Checkatrade","domain":"checkatrade.com","url":"https://alion.io/company/checkatrade","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":95,"open_postings":4,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":71,"computed_at":"2026-11-08T05:47:12Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":null,"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":73000,"max_usd":194000,"period":"year","method":"role_country_seniority_unknown","sample_n":168},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"A/B Testing","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"Looker","optional":true},{"name":"Tableau","optional":true}],"status":"live","first_seen_at":"2026-07-22T11:34:35Z","employer_posted_date":"2026-07-22","last_verified_at":"2026-11-09T03:57:05Z","board_verified":true,"closed_at":null,"days_open":109,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":108},"description":"Powering Great Work\nWe started as the place to find a trusted trade. Now, as we shape the future of home improvement, we're building the tech to transform that landscape for everyone - better products, smarter data, AI where it actually helps - so trades can spend less time on admin and consumers can find someone they trust, first time. That's Powering Great Work, and it's why every team here exists:\nTrades spend less time on admin and more on winning work and growing their business\nHomeowners get a trusted trade, first time, every time\nWe get to build products that change homes and lives across the country\nAs our next Applied Scientist, you'll help build the UK's go-to home improvement marketplace by making sure the numbers behind it are right. AI is doing more of the heavy lifting on analysis, and you'll be the human layer above it. You'll own the direction of your work, partner with data scientists on models and systems with real impact, and work closely with the C-suite on making the business more data-driven.\nThe job, unfiltered:\nOwn metric integrity: define and govern what our numbers actually mean, so nobody makes a call off a flawed definition or a dodgy query.\n\nAct as the quality gate on AI-generated analysis, checking the logic and validating the output so errors are caught before they reach a stakeholder.\n\nDesign and interpret A/B tests: set the success metrics, size the sample properly and call it when a result is underpowered rather than running with it.\n\nDiagnose what's driving commercial performance, such as why revenue is moving, where leads drop out of the funnel and which segments are underperforming, and turn that into a structured investigation with real hypotheses.\n\nTurn analysis into action: size the commercial impact, lay out the trade-offs, help the business decide what to do differently, then track whether it worked.\n\nBuild interactive dashboards and self-serve tools that keep stakeholders oriented day to day, without an analyst needing to be in the loop every time.\n\nThe fit:\nA track record across diagnosing, analysing and acting: not just producing analysis, but finding the cause and driving the change that moved the outcome.\n\nFluency with SQL, Python and core data concepts, so you can tell when an output is wrong before anyone else spots it.\n\nExperience designing experiments and turning statistical findings into commercial recommendations that hold up under scrutiny.\n\nA knack for explaining complex findings to non-technical audiences in a way that moves a decision.\n\nExperience in a marketplace, subscription or lead-generation business is a bonus.\n\nExperience with tools like Tableau or Looker is a bonus too.\n\n(Don't self-select out because you don't tick every box. We'd rather meet you.)\nWhat you get\nCompetitive salary, annual bonus & equity scheme\nHealth, wellbeing and learning support\nGym membership, Smart Tech Scheme, Cycle Scheme\nBirthday/special day leave, buy & sell holiday scheme\n1 week's paid charity leave, and more\nHow this goes\nScreening call with one of our Talent Acquisition Partners\n\n1st stage: interview with the hiring manager\n\n2nd stage: interview made up of two speed rounds with stakeholders\n\nFinal stage: panel interview, including a short analysis case study\n\nNot this one? Stay close anyway. Join the Talent Community and we'll ping you the second something better fits.\nAbout us\n We’re Checkatrade - the UK’s leading platform for finding a tradesperson. With more than 50,000 trades listed and over 6 million reviews, we help homeowners get jobs done right and help tradespeople grow their business.\nWe’re growing fast, with big plans to become the go-to brand for home improvements. If you care about great work, take pride in the details, and want to make an impact, you’ll fit right in.","description_format":"text","description_chars":3792,"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":["Equity","Gym membership"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Marketplaces","Local Services Marketplaces"],"lifecycle":[{"event":"open","at":"2026-10-02T18:09:30Z"},{"event":"open","at":"2026-10-21T22:37:28Z"}],"visa":[],"liveness":{"score":22,"band":"cold","label":"Long shot","p_open":1,"p_active":0.618,"p_room":0.36,"age_days":108,"expected_fill_days":71,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-11-08T05:47:12Z"},"pay":null,"html_url":"https://alion.io/job/checkatrade-marketplace-optimisation-lead","json_url":"https://alion.io/job/checkatrade-marketplace-optimisation-lead.json","meta":{"generated_at":"2026-11-09T06:01:57Z","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":1742,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-10T00:00:00Z"}},"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":673215},"rest":"https://alion.io/mcp/rest/get_company?id=673215"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcheckatrade-marketplace-optimisation-lead"},{"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%2Fcheckatrade-marketplace-optimisation-lead"},{"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%2Fcheckatrade-marketplace-optimisation-lead"},{"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/checkatrade-marketplace-optimisation-lead\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcheckatrade-marketplace-optimisation-lead"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":1713902}},{"tool":"search_jobs","arguments":{"company":"checkatrade.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":1713902},"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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