{"id":2722298,"url":"https://alion.io/job/costar-group-software-engineer-ii-backend","title":"Software Engineer II - Backend","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":6,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Richmond, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":108000,"max":140000,"currency":"USD","period":"year","gross":null,"usd_annual":140000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":true,"relocation_package":false,"has_equity":true,"technologies":[{"name":".NET","optional":false},{"name":"AI Agents","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude Code","optional":false},{"name":"Copilot","optional":false},{"name":"Java","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Agentic Workflows","optional":true},{"name":"Apache Kafka","optional":true},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"Databricks","optional":true},{"name":"Datadog","optional":true},{"name":"Docker","optional":true},{"name":"ElasticSearch","optional":true},{"name":"ETL/ELT","optional":true},{"name":"GCP","optional":true},{"name":"Kibana","optional":true},{"name":"Kubernetes","optional":true},{"name":"OpenSearch","optional":true},{"name":"Python","optional":true},{"name":"RabbitMQ","optional":true}],"status":"live","first_seen_at":"2026-08-19T00:00:00Z","employer_posted_date":"2026-08-19","last_verified_at":"2026-10-16T23:37:53Z","board_verified":true,"closed_at":null,"days_open":59,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":59},"description":"Software Engineer II - BackendJob Description\nOverview\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 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.\nRole Description:\nWe are seeking a Software Engineer II to join a new team building the next generation of back-end services, APIs and integrations in the finance tech organization. Initially this role will focus on the systems that move financial data between external platforms and our enterprise contracting system, integrating with existing APIs, message queues and SQL databases. You will help build configurable, reusable services that can be extended to new sources, systems and acquisitions through configuration rather than one-off, hard-coded integrations.\nYou will also help standardize how data moves across our billing systems to allow for greater visibility into patterns, errors and optimizations across a payments flow of billions of dollars a year.\nThis position is inRichmond, VA and has a work schedule of Monday through Thursday in office and Friday work from home.\nResponsibilities:\nContribute to technical discussions and architectural decisions aligned with business goals\nDesign, develop, and maintain robust and scalable back-end applications and APIs using the Microsoft .NET technology stack, SQL and other data tools\nChampion maintainable, well-tested code and sound design: clear separation of concerns, loose coupling, and consistent use of established design patterns\nCollaborate with engineering, product, DevOps and DBA teams to deliver production systems and participate in code reviews\nWork from requirements through delivery, partnering with senior engineers and business stakeholders to turn business context into technical designs and development-ready specifications\nBasic Qualifications:\nBachelor's degree required from an accredited, not-for-profit, in-person college/university\nTrack Record of committment to prior employers\n3+ years of professional experience in software development using strongly typed languages for server-side processing, such as C#, GoLang, Java or Node with TypeScript\nStrong experience with relational databases, including database design and performance optimization\nExperience building scalable APIs and system integrations across REST APIs, message brokers or event streams\nExperience building configurable, reusable frameworks that support multiple integrations or business processes rather than hard-coded, single-purpose implementations\nStrong understanding of CI/CD principles, infrastructure as code, automated deployment pipelines, and source control systems\nStrong analytical and problem-solving skills, with attention to detail and excellent communication skills\nExperience with agentic engineering and AI-assisted development tools (e.g., Claude Code, GitHub Copilot) to accelerate software delivery\nPreferred Qualifications:\nExposure to serverless computing and event-driven architecture, including but not limited to RabbitMQ, SQS, Kafka, or Azure Service Bus\nFamiliarity with microservices architecture, containerization (Docker, Kubernetes), and cloud platforms such as AWS, Azure or GCP\nFamiliarity with observability tools like Kibana, Datadog and other monitoring frameworks\nExperience with Elasticsearch or OpenSearch, including relevance and index tuning to power fast, accurate search across contract, billing and reference data\nDatabricks, Python or other ETL processing experience\nPayments or financial systems experience a plus\nDemonstrated ability to apply AI copilots or agentic workflows for code generation, code review, and root-cause analysis \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 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 variety of factors, including but not limited to, geographic location, skills, and competencies.\nBase Compensation: $108,000 - $140,000 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.\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":6227,"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":["Retirement plans"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Real Estate","Data Providers & Datasets","Commercial Real Estate","Online Classifieds"],"lifecycle":[{"event":"open","at":"2026-10-16T15:14:19Z"}],"visa":[],"liveness":{"score":14,"band":"cold","label":"Long shot","p_open":1,"p_active":0.497,"p_room":0.28,"age_days":59,"expected_fill_days":24,"reasons":["conf:1","win:tail","crowd:brand"],"computed_at":"2026-10-17T00:46:01Z"},"pay":{"stated_usd_annual":140000,"is_top_pay":false},"html_url":"https://alion.io/job/costar-group-software-engineer-ii-backend","json_url":"https://alion.io/job/costar-group-software-engineer-ii-backend.json","meta":{"generated_at":"2026-10-17T00:46:01Z","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":1048,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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-group-software-engineer-ii-backend"},{"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-software-engineer-ii-backend"},{"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-software-engineer-ii-backend"},{"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-software-engineer-ii-backend\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcostar-group-software-engineer-ii-backend"}]}