{"id":2876312,"url":"https://alion.io/job/mainstay-senior-data-engineer","title":"Senior Data Engineer","company":{"id":5567,"name":"Mainstay","domain":"mainstaylabs.com","url":"https://alion.io/company/mainstaylabs","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":81,"open_postings":9,"ghost_share":0,"stale_share":0.778,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":117000,"max_usd":213000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":365},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon Redshift","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Python","optional":false},{"name":"Snowflake","optional":false},{"name":"Spark","optional":false},{"name":"SQL","optional":false},{"name":"Amazon SageMaker","optional":true},{"name":"AWS","optional":true},{"name":"Dagster","optional":true},{"name":"Docker","optional":true},{"name":"MLFlow","optional":true},{"name":"Prefect","optional":true},{"name":"Terraform","optional":true}],"status":"closed","first_seen_at":"2026-10-19T20:56:13Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-21T20:36:47Z","board_verified":false,"closed_at":"2026-10-21T20:36:47Z","days_open":1,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":1},"description":"About Mainstay\nMainstay is the leading market intelligence platform purpose built for buying, managing, and selling homes in the single family rental industry. As an AI native company, we turn complex data into clarity that helps the industry move forward with confidence. Founded within Opendoor, Mainstay launched as an independent company in 2024 and recently raised a Series A round led by Khosla Ventures.\nReady to shape the future of real estate with AI? Join Mainstay and help us redefine what’s possible in the single family rental space. If you thrive on solving complex problems and want to make a tangible impact in a fast-growing industry, we’d love to hear from you - apply now and let’s move the industry forward, together!\nWhat you’ll do:\nAs a Senior Data Engineer on the Data Platform team, you will be responsible for building data products in partnership with our data science and product teams. This is a rare opportunity where your data engineering output will be the shipped product and not just an internal resource. Our customers are businesses operating in the single-family home market and our goal is to provide them with high quality data to inform underwriting, leasing, vendor management, and more. We’re a small team dedicated to quality engineering and are looking for a technical leader to help us evolve our products and establish best practices.\nYou’re expected to:\nArchitect durable data models with intuitive representations of residential real estate\n\nDesign graceful and reliable workflows to generate data assets\n\nInform the overall architecture of our data platform\n\nEstablish standards and best practices for data engineering\n\nBecome a domain expert in real estate\n\nWhat we’re looking for\n6+ years of experience working in data engineering or software engineering\n\nExpertise in data architecture, data modeling, and building data pipelines at scale\n\nProficiency in SQL, Python, and/or Spark\n\nExpertise in cloud data warehouses such as Snowflake, Redshift, BigQuery\n\nExperience scheduling and operating batch data processing workflows\n\nBonus points if you have:\nAirflow, Prefect, Dagster, or a similar orchestration system\n\nData Warehouse (DWH) architecture and Change Data Capture (CDC) modeling techniques\n\nWeb scraping and data extraction from public or semi-structured sources\n\nExperience with AI/ML platforms such as SageMaker, MLflow, or similar\n\nHands-on experience managing data platform infrastructure, with proficiency in tools such as Terraform, Docker, and AWS services\n\nMainstay Built on Trust\nAt Mainstay, trust is at the core of everything we do. We build trust with everyone -- from candidates to employees to partners. We believe in fairness and openness throughout our hiring process, evaluating candidates based on qualifications without regard to race, color, religion, national origin, age, gender, marital status, disability, veteran status, sexual orientation, gender identity, or any other protected status. Our privacy practices describe how we handle applicant information, you can find the policy details for California residents here.\nWe are committed to providing reasonable accommodations throughout our recruitment processes for candidates with disabilities, pregnancy, religious beliefs, or other reasons protected by applicable laws. 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