{"id":1470031,"url":"https://alion.io/job/costar-group-full-stack-engineer-apartments-com-irvine-ca","title":"Full-Stack Engineer - Apartments.com - Irvine, CA","company":{"id":6056,"name":"CoStar Group","domain":"costargroup.com","url":"https://alion.io/company/costargroup","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":83,"open_postings":89,"ghost_share":0,"stale_share":0.697,"repost_share":0,"time_to_fill_p50_days":37,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","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":103000,"max":154000,"currency":"USD","period":"year","gross":null,"usd_annual":154000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Agile","optional":false},{"name":"C#","optional":false},{"name":"ETL/ELT","optional":false},{"name":"Scrum","optional":false},{"name":"SLI/SLO/SLA","optional":false},{"name":"SQL","optional":false},{"name":"Amazon S3","optional":true},{"name":"Angular","optional":true},{"name":"Apache Kafka","optional":true},{"name":"AWS","optional":true},{"name":"Datadog","optional":true},{"name":"JavaScript","optional":true},{"name":"MS SQL","optional":true},{"name":"MySQL","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-09-29T15:48:08Z","employer_posted_date":"2026-09-29","last_verified_at":"2026-10-18T05:36:29Z","board_verified":true,"closed_at":null,"days_open":18,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":18},"description":"Full-Stack 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 and the NASDAQ 100, 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 for 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,\nApartmentFinder.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.\nOur team is seeking an accomplished Software Engineer to join our team in supporting multiple software products and brands across the organization. You will have a direct impact on highly visible Apartments.com web applications that touch millions of users. You continuously learn emerging technologies and architecture advancements and apply the learnings to improve Apartments’ software products\nThis position is located in Irvine, CA and offers 4 days a week onsite with 1 day work from home.\nRESPONSIBILITIES\nDesign and develop using Object Oriented design principles and software design patterns to attain high reusability and maintainability.\nDeep knowledge and experience in writing unit testable software with C#\nDevelop an in-depth understanding of CoStar’s product architecture and frameworks. Maintain and contribute to CoStar’s product platform as necessary.\nDevelop database stored procedures and SQL scripts/ETL jobs that meet CoStar database standards to implement product requirements.\nParticipate and drive continuous improvement within CoStar’s Agile/Scrum teams. \nBuild consensus among different teams working on software development projects.\nFacilitate discussions among other .NET and database developers to exchange new ideas and improvements.\nContinually evaluate emerging technologies to identify opportunities, trends and best practices that can be used to strengthen CoStar’s technology platform and development practices.\nBASIC QUALIFICATIONS\nBachelor’s Degree required from an accredited, not-for-profit, in-person college/university\nA track record of commitment to prior employers\n3+ years of production development experience with C# .Net (or .Net Core)\nA demonstrable track record of building and launching successful products and platforms\nDeliver products that meet specifications and performance SLA\nExperienced in unit, performance, and automation testing\nDeeply understand what drives the business for which you are building software\nTake an active role in mentoring developers with ability to build consensus\nPREFERRED QUALIFICATIONS\nDemonstrate working knowledge Vue, React or Angular in TypeScript\nExperience in relational database design (MS SQL or MySQL) including performance tuning\nExperience with AWS S3, SQS, Dynamo, ElastiCache, Apache Kafka and Datadog\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 your 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 on variety of factors, including but not limited to, geographic location, skills, and competencies.\nBase Compensation: $103,000-$154,000 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#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":5944,"description_truncated":false,"requirements":{"experience_years_min":3,"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":["Real Estate","Commercial Real Estate"],"lifecycle":[{"event":"open","at":"2026-09-29T15:48:08Z"}],"visa":[],"liveness":{"score":54,"band":"ok","label":"Likely open","p_open":1,"p_active":0.602,"p_room":0.9,"age_days":17,"expected_fill_days":37,"reasons":["conf:3","stale_co","velocity","win:mid","comp:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":154000,"is_top_pay":false},"html_url":"https://alion.io/job/costar-group-full-stack-engineer-apartments-com-irvine-ca","json_url":"https://alion.io/job/costar-group-full-stack-engineer-apartments-com-irvine-ca.json","meta":{"generated_at":"2026-10-18T09:10:42Z","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":13658,"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":6056},"rest":"https://alion.io/mcp/rest/get_company?id=6056"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcostar-group-full-stack-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-group-full-stack-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-group-full-stack-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-group-full-stack-engineer-apartments-com-irvine-ca\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcostar-group-full-stack-engineer-apartments-com-irvine-ca"}]}