{"id":2575555,"url":"https://alion.io/job/costar-group-senior-software-engineer-cre","title":"Senior Software Engineer - CRE","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":"A","score":85,"open_postings":89,"ghost_share":0,"stale_share":0.584,"repost_share":0,"time_to_fill_p50_days":37,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sydney, Australia"],"countries":["AU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":73000,"max_usd":154000,"period":"year","method":"role_seniority_country_cell","sample_n":9},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"AWS","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"JavaScript","optional":false},{"name":"Next.js","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"Amazon ECS","optional":true},{"name":"Amazon EKS","optional":true},{"name":"AWS Lambda","optional":true},{"name":"DynamoDB","optional":true},{"name":"Kubernetes","optional":true},{"name":"MySQL","optional":true},{"name":"OpenSearch","optional":true},{"name":"PostgreSQL","optional":true},{"name":"SQL","optional":true}],"status":"live","first_seen_at":"2026-10-15T00:00:17Z","employer_posted_date":"2026-10-15","last_verified_at":"2026-10-15T04:48:55Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Senior Software Engineer - CREJob Description\nSenior Software Engineer - CRE\nStep into a pivotal role on a tight-knit development team managing Domain's Commercial Real Estate (CRE) platform. We create customer-centric products powered by Domain's market-leading data assets to solve genuine problems for our users.\nAs a Senior Software Engineer, you'll play a key role in designing, building, and evolving the technology that powers Domain’s commercial property marketplace. Working closely with Product, Design, and Engineering peers, you'll help deliver scalable, performant and reliable solutions while contributing to technical direction, engineering excellence, and continuous improvement across the platform.\nWhat You'll Do\nWork collaboratively within a cross-functional team to deliver high-quality software solutions.\nDesign, develop, and maintain scalable applications and services.\nBuild clean, maintainable, and rigorously tested code.\nDeliver impactful features and essential fixes directly to production.\nContribute to system architecture, technical design, and engineering best practices.\nMentor engineers and champion high standards for code quality, testing, and delivery.\nIdentify opportunities to improve performance, reliability, and developer experience.\nHelp drive continuous improvement across the team and platform. \nWhat You'll Bring\nStrong experience shipping production-grade software and making critical architectural trade-offs.\nExpertise in .NET/C# development.\nExperience building and supporting cloud-native applications within AWS.\nStrong understanding of modern front-end technologies including React, Next.js, TypeScript, and JavaScript.\nExperience with relational databases and distributed systems.\nKnowledge of CI/CD, Test Driven Development (TDD), and software engineering best practices.\nStrong problem-solving skills and an ownership mindset.\nAbility to collaborate effectively with both technical and non-technical stakeholders. \nTech Stack\n.NET / C#\nAWS (Lambda, ECS, EKS, DynamoDB)\nOpenSearch\nPostgreSQL, MySQL, SQL Server\nTypeScript / JavaScript\nReact & Next.js\nCI/CD\nTest Driven Development\nWhy Join Us?\nCommercial Real Estate is a key part of Domain's portfolio, helping thousands of agencies and property professionals connect with buyers, sellers, tenants, and investors across Australia. You'll join a collaborative team working on meaningful products, modern technologies, and real customer problems while having the opportunity to make a significant impact on the future of the platform.\nWhat's next?\nWe'll give your application the thoughtful attention it deserves and get back to you as soon as possible. If there's a match, one of our recruitment consultants will reach out so keep your phone handy! We're genuinely excited about the chance to work together and make a meaningful impact.\nEquity, Diversity and Inclusion at Domain\nDomain is enthusiastically and unapologetically committed to fostering an equitable, inclusive work culture which reflects our customers and communities. We are proactively looking for candidates from all lived experiences, including people with disability, and people of all ages, ethnicities, cultures (including Aboriginal and Torres Strait Islander Peoples), faiths, sexual orientations, and gender identities (including trans and non-binary people).\nWe are committed to providing an equitable recruitment process for people with disability. If you require adjustments during the process we're here to support. If you wish to receive this job advertisement in an accessible format, or have a confidential chat about workplace adjustments, please contact our Equity, Diversity and Inclusion team at  or leave a message on 1300 858 356 and we will get back to you.\nCoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing\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":4053,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Commercial Real Estate","Residential Real Estate","PropTech"],"lifecycle":[{"event":"open","at":"2026-10-15T00:00:17Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":0,"expected_fill_days":37,"reasons":["conf:0","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/costar-group-senior-software-engineer-cre","json_url":"https://alion.io/job/costar-group-senior-software-engineer-cre.json","meta":{"generated_at":"2026-10-15T09:39:37Z","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":14542,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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-senior-software-engineer-cre"},{"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-senior-software-engineer-cre"},{"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-senior-software-engineer-cre"},{"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-senior-software-engineer-cre\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcostar-group-senior-software-engineer-cre"}]}