{"id":704312,"url":"https://alion.io/job/caronsale-senior-machine-learning-engineer","title":"Senior Machine Learning Engineer (m/f/x)","company":{"id":668868,"name":"CarOnSale","domain":"caronsale.com","url":"https://alion.io/company/caronsale","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":10,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":36,"computed_at":"2026-10-27T05:46:45Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Brazil"],"countries":["BR"],"hiring_countries":["BR"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":49000,"max_usd":129000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2365},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon SageMaker","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"ChatGPT","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"Copilot","optional":false},{"name":"Databricks","optional":false},{"name":"Feature Store","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Snowflake","optional":false},{"name":"Terraform","optional":false},{"name":"Vertex AI","optional":false},{"name":"dbt","optional":true}],"status":"live","first_seen_at":"2026-09-04T12:56:35Z","employer_posted_date":"2026-10-15","last_verified_at":"2026-10-27T12:27:56Z","board_verified":true,"closed_at":null,"days_open":53,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":53},"description":"You don't want another contract that ends at the notebook. You want the pager, the promotion lane and the authority to say a model isn't ready. This one is based in Brazil, 40 hours a week on your own invoice, and everything after handoff is yours.\nLocation: Remote from Brazil - you must be based in Brazil. 40 hours per week, Monday to Friday, with daily overlap into the Berlin working day.\n\nAbout us\nCarOnSale is the AI-powered platform for B2B used car trading in Europe. Over 40,000 buyers from more than 20 countries trade on our platform - and 85% of inventory is exclusive to us. We connect software, pricing intelligence, logistics and financing in one layer - as the operating system for an entire industry.\nOne Platform. One Profit Engine.\n\nThe platform you build in\nOur machine learning runs on one shared, central platform - not a separate pipeline per model. Five canonical stages: data extraction, validation, transformation, training and evaluation. A Snowflake data warehouse feeds a SageMaker managed feature store, and models reach production through governed CI/CD promotion lanes on Terraform-managed AWS infrastructure. Four models serve production today. Fifteen to twenty by mid-2027. Your job is to build inside that platform and make it stronger, so the next model costs less to ship than the last one.\n\nYour responsibilities\nYou own models from handoff through to production: packaging, deployment, monitoring, and the decision on whether a model is ready to serve\nYou keep production models reliable - drift detection, performance monitoring, alerting and incident response when something moves\nYou own the serving and inference path: fitted pipeline artifacts, inference entry points, monitoring hooks and feature-store parity\nYou review model design and evaluation methodology before anything ships, and catch data leakage, backward-window errors and weak evaluation during development, while they are still cheap to fix\nYou extend the shared platform so it stays useful for every model, without project-specific logic leaking into shared code\nYou set the engineering standards the platform runs on as it scales across the organisation\n\nWhat you bring\n4+ years in production machine learning engineering, with real ownership of models after handoff - not only training them\nStrong Python: typed, tested, production-grade code, and you review the work of others\nEnough machine learning depth to challenge a pipeline on problem framing, feature engineering, model selection and evaluation methodology\nHands-on experience with a managed ML platform - SageMaker, Vertex AI, Databricks or Azure ML - plus feature stores, CI/CD for machine learning, AWS and Terraform\nAn AI-native way of working: you use tools like Claude, ChatGPT or Copilot actively in your daily work\nEnglish at C1 level, written and spoken. German is not required - we work in English\nYou are based in Brazil and invoice through your own company. We work directly with you, not through intermediary or umbrella services\nNice to have\nSnowflake and dbt - you can pick both up here\nExperience mentoring colleagues or reviewing their work\nComfort operating where the answer is not defined yet\n\nWhat to expect from us\nA full-time engagement: 40 hours per week, Monday to Friday, invoiced monthly against your own company\nYou are treated like a full member of the team - standups, bi-weekly sprints, and all company communication\nFully remote from anywhere in Brazil\nAn English-speaking engineering team with short decision paths\nDirect ownership of models serving a live product, not a proof of concept\nStructured onboarding with a buddy from the team\nApply now - your CV is enough.","description_format":"text","description_chars":3673,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Brazil","iso":"BR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Auctions","Marketplaces"],"lifecycle":[{"event":"open","at":"2026-09-11T03:36:37Z"}],"visa":[],"liveness":{"score":26,"band":"fade","label":"Fading","p_open":1,"p_active":0.474,"p_room":0.55,"age_days":52,"expected_fill_days":36,"reasons":["conf:1","stale_co","win:tail"],"computed_at":"2026-10-27T05:46:45Z"},"pay":null,"html_url":"https://alion.io/job/caronsale-senior-machine-learning-engineer","json_url":"https://alion.io/job/caronsale-senior-machine-learning-engineer.json","meta":{"generated_at":"2026-10-27T15:30:54Z","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":4398,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"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":668868},"rest":"https://alion.io/mcp/rest/get_company?id=668868"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcaronsale-senior-machine-learning-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%2Fcaronsale-senior-machine-learning-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%2Fcaronsale-senior-machine-learning-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/caronsale-senior-machine-learning-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcaronsale-senior-machine-learning-engineer"}]}