Loftium is a Seattle-based, fast-growing start-up that delivers premium rental experiences at affordable rates, leveraging home-sharing to provide discounted rent to tenants. Loftium’s mission is to provide affordable, workforce housing in America’s least affordable cities.


We are backed by top-tier Silicon Valley venture capital firms and are among the most recognized start-ups in the Pacific Northwest (read about us in Geekwire!). We’re a nimble, capable, driven, and diverse team that’s focused on learning, experimentation, and results. We believe that everyone should have access to a beautiful home, in a neighborhood they want and we’re on a mission to make that happen. Loftium is growing quickly - come join us!


About the role

Machine learning is core to our business. Every day our models are used to find the right city, the right house, and the right renter to grow our business. We're looking for a talented, experienced Machine Learning engineer to help us scale quickly, smartly and nimbly. This role offers a unique opportunity to join an amazing team and grow your career as quickly as Loftium scales. This role reports to our Head of Machine Learning.



    • Build Machine Learning Models and products that help drive our core business
    • Make thoughtful architectural decisions with limited information, translating business requirements into machine learning products
    • Communicate decision rationales, formulating project plans and delivering results
    • Feature engineering, exploring different model architectures and technologies, automating model comparison and feature selection to optimize performance
    • Shipping models and services to staging and production environments multiple times a day
    • Building data pipelines that allow us to improve our machine learning products and services
    • Design and deploy efficient data services and stores
    • Brainstorming and team collaboration to come up with innovative ideas to improve Loftium products and to accelerate business growth

About You

    • 5+ years experience leveraging machine learning to solve complex business problems
    • Adaptable: You thrive in a fast-paced, ever-changing environment, and understand that the right solution and the perfect solution rarely coincide in startups
    • Excited about Loftium’s mission of making housing more affordable
    • Bonus: Masters or PhD in computer science or other STEM degree

Ideally you have experience with:

    • Python and SQL (Both required)
    • Designing and deploying scalable production machine learning products
    • Machine learning algorithms (Neural networks, gradient boosting) and model evaluation (cross validation, bias-variance trade-off)
    • Architecting relational databases (PostgreSQL), NoSQL databases (MongoDB), and data warehouses
    • Git and GitHub; software development workflows
    • Managing deployment & operation of cloud services (AWS, Azure etc.)
    • Leveraging data pipeline frameworks (Airflow, Luigi, Pinball)
    • Web scraping, mobile api reverse engineering (Crawlera, Charles)
    • Big data tools (Kafka, Spark, HDFS)
    • Bonus: Early-stage startup experience, especially joining at the seed or Series A stage company and scaling a technical product


Competitive salary and equity

Flexible hours and time off

Medical & dental insurance, and 401k

Team lunches and happy hours

Snacks-stocked kitchen

Dog-friendly workplace

Once-in-a-lifetime experience taking a startup into scale mode, working directly with experienced founders and a diverse, fun-loving and hardworking team


Loftium is an equal-opportunity employer and we welcome applicants from all backgrounds and perspective.

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