{"id":2527895,"url":"https://alion.io/job/costar-senior-data-engineer-apartments-com-irvine-ca","title":"Senior Data Engineer - Apartments.com - Irvine, CA","company":{"id":15350,"name":"CoStar Group","domain":"costar.com","url":"https://alion.io/company/costar","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":"Eightfold","truth_index":{"grade":"B","score":75,"open_postings":114,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-19T05:45:15Z"}},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Irvine, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":128000,"max":190000,"currency":"USD","period":"year","gross":null,"usd_annual":190000},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"BigQuery","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude Code","optional":false},{"name":"Copilot","optional":false},{"name":"Cursor","optional":false},{"name":"Databricks","optional":false},{"name":"Dimensional Modeling","optional":false},{"name":"ETL/ELT","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Machine Learning","optional":false},{"name":"Power BI","optional":false},{"name":"pySpark","optional":false},{"name":"Python","optional":false},{"name":"Snowflake","optional":false},{"name":"Spark","optional":false},{"name":"SQL","optional":false},{"name":"Amazon S3","optional":true},{"name":"Apache Kafka","optional":true},{"name":"Azure","optional":true},{"name":"DynamoDB","optional":true},{"name":"Prompt Engineering","optional":true}],"status":"live","first_seen_at":"2026-09-28T00:00:00Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-19T13:54:18Z","board_verified":true,"closed_at":null,"days_open":21,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":21},"description":"Senior Data Engineer - Apartments.com - Irvine, CAJob Description\nCoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives.\nWe have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We’ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. This is how we deliver to our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.\nApartments.com is the nation’s #1 rental marketplace for owners, property managers and consumers. Apartments.com is the network that millions of renters every year rely on to find their new place, is continuing to grow our industry-leading sales force. We provide apartment Property Managers and Owners with a platform to market their property listings and the industry’s most comprehensive virtual tools to attract the most and highest-quality renters. The Apartments.com Network includes Apartments.com, ForRent.com, ApartmentFinder.com, ApartmentHomeLiving.com, and eight other leading rental sites. Our suite of services includes digital advertising, social and reputation management, and market analytic solutions which delivers innovative tools for our customers.\nLearn more about Apartments.com.\nApartments.com is growing quickly and we’re looking for a Senior Data Engineer to help accelerate our growth. This role will be responsible for helping build out sitewide tracking architecture on Apartments.com and then feeding that data into user-friendly KPI dashboards which track site performance and product usage and provide day-to day insights into consumer behavior. This individual will help build and deliver the data engineering architecture for Apartments.com and work across all departments to provide analysis and insights for future growth. You will be part of various aspects of our data management, ranging from designing and maintaining automated data infrastructure and delivering Data engineering and Analytics solutions to facilitating data access and analysis for key company teams.\nCoStar is investing heavily in artificial intelligence to accelerate software delivery, improve platform observability, automate research and business workflows, enhance product experiences through intelligent agents and skills, and improve data quality across enterprise systems. Successful candidates will demonstrate a willingness to learn, adopt, and apply AI technologies responsibly to solve complex business and engineering challenges.\nThis position is located in Irvine, CA and offers a schedule of Monday to Thursday in the office and work from home on Fridays.\nResponsibilities\nDesign and Oversee implementation of dimensional modeling, database design, and cloud data platform structures (e.g., Databricks, Snowflake, BigQuery)\nDevelop data platform framework to build secure data warehouses and data lakehouses applying principles of Medallion Architecture\nDesign, develop, and maintain scalable data pipelines and ETL processes using Databricks, Snowflake, and other AWS services\nImplement and optimize Spark jobs, data transformations, and data processing workflows in Databricks\nBuilding and deploying AI/ML models: Integrate Machine Learning into data pipelines, leverage Databricks ML and AWS ML to develop predictive models and drive business insights\nDefine and Apply AI-assisted software development practices to improve engineering productivity and code quality\nUnderstand various data domains and be able to translate them through data transformations to suit various business needs\nOversee automated data infrastructure: Collaborate with software engineering and product teams to streamline data tracking in our products\nAbility to integrate data from disparate sources via cross domain data stitch into existing data model\nImplement data governance, lineage tracking, testing, and monitoring frameworks to guarantee data integrity\nHands-on data optimization and query performance\nLiaise with key company teams (DBA, DevOps, SecOps…) for data accessibility and analysis\nMentor and manage engineers and analysts in the normal execution of their responsibilities.\nSuccessfully implement software development projects to specification and within scheduled timelines and budget parameters\nLeverage AWS DevOps and CI/CD best practices to automate the deployment, through terraform, and management of data pipelines and infrastructure.\nBasic Qualifications\nBachelor's degree required from an accredited, not-for-profit, in-person college/university\nA track record of commitment to prior employers\n6+ years of hands-on experience in software development, delivering high-quality solutions\nStrength in Data Engineering, with strong proficiency in Python, PySpark, and SQL\nSolid foundation in Object-Oriented Programming principles and best practices\nDemonstrated success in building and launching data-driven products operating at terabyte scale\nProven record of designing and implementing Enterprise Level secure, and accurate Data platform\nAbility to translate technical requirements into robust architecture, data models, and ETL strategies\nPractical experience with cloud-based databases, including both relational and non-relational systems\nKnowledge of business intelligence software (i.e. Power BI or similar tools)\nUnderstanding of AI technologies and hands-on experience leveraging AI tooling in development (Claude Code, GitHub Copilot, Cursor, Gemini, Grok)\nAbility to retrieve, synthesize, and present critical data in structures that is immediately useful to answering specific ad-hoc questions\nHands-on data experience on optimization, data quality checks, data accuracy and query performance improvement\n\nPreferred Qualifications\nHands-on experience or familiarity with big data platforms such as Databricks or Snowflake\nProficiency with cloud platforms, including AWS or Azure\nExperience working with NoSQL databases (e.g., DynamoDB) and object storage systems (e.g., Amazon S3, GCS, etc.)\nPractical knowledge of event streaming technologies, especially Kafka\nExperience leveraging AWS compute and container services for scalable solutions\nFamiliarity with large language models (LLMs), prompt engineering, or agent-based architectures\nGreat analytical and problem-solving skills, with the ability to tackle complex technical challenges\nStrong Ability to understand technical challenges and complex designs, and communicate into simple business ideas, or solutions with senior management/stakeholders\nWhat's In It For You?\nWhen you join CoStar Group, you’ll experience a collaborative and innovative culture working alongside the best and brightest to empower our people and customers to succeed.\nWe offer you generous compensation and performance-based incentives. CoStar Group also invests in\nyour professional and academic growth with internal training and tuition reimbursement.\nOur benefits package includes (but is not limited to):\nComprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug\nLife, legal, and supplementary insurance\nVirtual and in person mental health counseling services for individuals and family\nCommuter and parking benefits\n401(K) retirement plan with matching contributions\nEmployee stock purchase plan\nPaid time off\nTuition reimbursement\nOn-site fitness center and/or reimbursed fitness center membership costs (location dependent), with yoga studio, Pelotons, personal training, group exercise classes\nAccess to CoStar Group’s Diversity, Equity, & Inclusion Employee Resource Groups\nComplimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks\nThe final salary or hourly rate offered for this role will fall within the range set forth below based on a\nvariety of factors, including but not limited to, geographic location, skills, and competencies.\nBase Compensation: $128,000-$190,000 Annually\nWe welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position.\n#LI-AV1\n#Apartments.com\nCoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing","description_format":"text","description_chars":8877,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Retirement plans"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Commerce","Real Estate","Commercial Real Estate"],"lifecycle":[{"event":"open","at":"2026-10-14T12:24:44Z"}],"visa":[],"liveness":{"score":43,"band":"fade","label":"Fading","p_open":1,"p_active":0.569,"p_room":0.75,"age_days":21,"expected_fill_days":28,"reasons":["conf:0","stale_co","velocity","win:late","comp:brand"],"computed_at":"2026-10-19T05:45:15Z"},"pay":{"stated_usd_annual":190000,"is_top_pay":true},"html_url":"https://alion.io/job/costar-senior-data-engineer-apartments-com-irvine-ca","json_url":"https://alion.io/job/costar-senior-data-engineer-apartments-com-irvine-ca.json","meta":{"generated_at":"2026-10-19T16:55:09Z","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":12807,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-20T00:00:00Z"}},"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":15350},"rest":"https://alion.io/mcp/rest/get_company?id=15350"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcostar-senior-data-engineer-apartments-com-irvine-ca"},{"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%2Fcostar-senior-data-engineer-apartments-com-irvine-ca"},{"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%2Fcostar-senior-data-engineer-apartments-com-irvine-ca"},{"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/costar-senior-data-engineer-apartments-com-irvine-ca\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcostar-senior-data-engineer-apartments-com-irvine-ca"}]}