{"id":854085,"url":"https://alion.io/job/altosoftware-senior-machine-learning-engineer","title":"Senior Machine Learning Engineer","company":{"id":679778,"name":"Alto Software","domain":"altosoftware.co.uk","url":"https://alion.io/company/altosoftware","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","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":105000,"max_usd":195000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":38},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"dbt","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"Scikit-learn","optional":false},{"name":"Spark","optional":false},{"name":"TensorFlow","optional":false},{"name":".NET","optional":true},{"name":"Amazon ECS","optional":true},{"name":"Amazon Redshift","optional":true},{"name":"Amazon S3","optional":true},{"name":"Amazon SageMaker","optional":true},{"name":"AWS Lambda","optional":true},{"name":"C#","optional":true},{"name":"DynamoDB","optional":true},{"name":"JavaScript","optional":true},{"name":"Node JS","optional":true},{"name":"Terraform","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-07-03T00:00:00Z","employer_posted_date":"2026-07-03","last_verified_at":"2026-10-18T00:02:56Z","board_verified":true,"closed_at":null,"days_open":107,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":106},"description":"Alto Software Group is a B2B SaaS company that powers more than half of all UK housing transactions each year. We create software solutions that connect businesses and consumers, delivering a one-stop shop for estate agents and home builders. Our goal is to drive efficiency, speed up transactions, reduce risk, and improve the end-customer experience. While we're not a start-up, we have a start-up mindset and want our people to operate with this mindset so that we can achieve our ambitions.\nThe Role\nWe are looking for a Senior Machine Learning Engineer to bring intelligent automation and predictive capability to the heart of the UK property market. Alto sits at a unique intersection: we process an enormous volume of real transaction data, and we're only beginning to unlock what that means for the products our customers rely on every day. This is a role for someone who wants to build ML systems that genuinely change how people buy and sell homes - not maintain models that gather dust.\nWhat You'll Do\nDesign, build, and deploy end-to-end machine learning pipelines - from data ingestion and feature engineering through to model serving and monitoring in production.\nOwn the full lifecycle of ML models: evaluate, iterate, and retire them with the same rigour you bring to building them.\nCollaborate closely with product and engineering teams to frame business problems as machine learning problems, and translate model outputs into product features users actually understand.\nEstablish and maintain standards for ML reproducibility, experiment tracking, and model versioning across the Data team.\nIdentify opportunities to apply ML across Alto's product suite - surfacing ideas proactively, not waiting to be briefed.\nWork with large, complex datasets drawn from live UK property transactions, ensuring data quality and feature reliability upstream of every model.\nContribute to a culture of engineering excellence through code reviews, documentation, and knowledge-sharing with data engineers and analysts.\nWhat You Need to Be Successful\nProven experience building and shipping machine learning models into production environments - not just notebooks and prototypes.\nStrong Python skills and hands-on experience with ML frameworks such as scikit-learn, PyTorch, or TensorFlow.\nSolid understanding of MLOps principles: model serving, monitoring, drift detection, and retraining pipelines.\nExperience working with cloud infrastructure - AWS preferred - and comfort deploying models in containerised or serverless environments.\nA rigorous, statistically grounded approach to model evaluation - you know when a model is good enough and when it isn't.\nThe ability to communicate model behaviour and limitations clearly to non-technical stakeholders.\nFamiliarity with data pipeline tooling (e.g. Airflow, dbt, Spark) and an understanding of how ML fits within a broader data platform.\nThere's always room to grow and learn with our roles - please don't be put off if you don't have all of these. It's more important that you're passionate about improving the home moving and owning experience for everyone.\nOur Technology Stack\nBackend: TypeScript, Node.js, C#, .NET\nInfrastructure: AWS (ECS, Lambda, SQS, DynamoDB), Terraform\nArchitecture: Microservices, Event-driven architecture\nData & ML: Python, AWS SageMaker, S3, Redshift\nWhy Join Alto?\nThis role gives you genuine ownership of ML capability at a company that processes more housing transactions than anyone else in the UK - the data advantage is real and largely untapped. You will have the scope to define how machine learning is built and deployed at Alto, not slot into a pre-defined process. It's an exciting moment to join: we're investing seriously in our Data function, and this hire will shape its direction.\nBenefits\n25 days annual leave + extra days for years of service\nDay off for volunteering & Digital detox day\nFestive Closure - business closed for period between Christmas and New Year\nCycle to work and electric car schemes\nFree Calm App membership\nEnhanced Parental leave\nFertility Treatment Financial Support\nGroup Income Protection and private medical insurance\nGym on-site in London\n7.5% pension contribution by the company\nDiscretionary annual bonus up to 10% of base salary\nTalent referral bonus up to £5K\nWe want to make Alto more welcoming, fair and representative every day. We’ll consider everyone who applies for this role in the same way, regardless of your ethnicity, colour, national origin, religion, sexual orientation, gender, gender identity, age, physical disability, neurodiversity status, family or parental status, or how long you’ve spent unemployed.","description_format":"text","description_chars":4656,"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":["Annual leave","Health insurance","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["PropTech"],"lifecycle":[{"event":"open","at":"2026-09-13T05:14:21Z"}],"visa":[],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":1,"p_active":0.351,"p_room":0.28,"age_days":106,"expected_fill_days":26,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/altosoftware-senior-machine-learning-engineer","json_url":"https://alion.io/job/altosoftware-senior-machine-learning-engineer.json","meta":{"generated_at":"2026-10-18T04:46:49Z","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":7149,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":679778},"rest":"https://alion.io/mcp/rest/get_company?id=679778"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Faltosoftware-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%2Faltosoftware-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%2Faltosoftware-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/altosoftware-senior-machine-learning-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Faltosoftware-senior-machine-learning-engineer"}]}