{"id":2527823,"url":"https://alion.io/job/costar-senior-engineer-business-technology","title":"Senior Engineer - Business Technology","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":83,"open_postings":115,"ghost_share":0,"stale_share":0.687,"repost_share":0,"time_to_fill_p50_days":46,"computed_at":"2026-10-27T05:46:45Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"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":71000,"max_usd":123000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":8},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Agile","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"Digital Twin","optional":false},{"name":"GCP","optional":false},{"name":"Shift-Left Security","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-09-29T00:00:00Z","employer_posted_date":"2026-09-29","last_verified_at":"2026-10-27T09:16:26Z","board_verified":true,"closed_at":null,"days_open":28,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":28},"description":"Senior Engineer - Business TechnologyJob Description\nBuild AI-powered tools and automations that are transforming how Domain operates.\nWe're looking for a Senior Software Engineer to join our Integration & Automation Squad, where you'll develop the platforms, integrations and intelligent automation capabilities that power our products and internal systems.\nWorking with C#, .NET and TypeScript, you'll help create scalable, event-driven solutions that connect systems, unlock data and enable AI-driven experiences across the business.\nWhat You'll Do\nBuild AI-powered tools, automations and platform capabilities used across Domain.\nDesign, develop and support scalable software solutions from concept through to production.\nCreate real-time integrations using APIs, messaging and event-driven architecture.\nBuild and maintain cloud-native microservices and distributed systems.\nSolve complex technical challenges across a large and evolving technology landscape.\nCollaborate closely with Product, Design and Engineering teams to deliver customer value.\nDrive code quality, security, performance and engineering best practices.\nMentor engineers and contribute to a culture of continuous improvement.\nInfluence architecture, technical standards and long-term platform strategy.\nIdeally You'll Have\nStrong commercial experience with C#, .NET and TypeScript.\nExperience building scalable APIs, integrations and distributed systems.\nExpertise with microservices and event-driven architectures.\nExperience with AWS, Azure or GCP.\nA strong understanding of cloud-native design patterns and software architecture.\nExperience designing solutions for scale, reliability and maintainability.\nKnowledge of modern testing practices including TDD, BDD and shift-left testing.\nA security-first mindset and experience with secure coding practices.\nExperience working in Agile, cross-functional product teams.\nPrevious experience mentoring engineers and helping teams grow.\nWhy Join Us?\nThis is an opportunity to work on high-impact engineering challenges while building AI-powered tools and intelligent automations that are used across Domain's platforms and business operations.\nYou'll join a collaborative team, work on modern cloud technologies, and have the opportunity to influence both the technical direction of the platform and the future of AI-enabled products within the business.\nIf you enjoy solving complex integration challenges, building scalable systems and creating AI-driven solutions that have real-world impact, we'd love to hear from you.\nWhat’s in it for you\nWorking at CoStar Group means you'll enjoy a culture of collaboration and innovation that attracts the best and brightest across a broad range of disciplines. We offer you generous compensation and performance-based incentives. As well as having an outstanding working environment, other perks include extra days of annual leave, leadership development programs, LinkedIn Learning, Perkbox discounts and much more!\nAt CoStar, we recognise the positive value of diversity and promote equality. We aim at all times to recruit the person who is most suited to the job and welcome applications from people of all backgrounds including but not limited to; people of all genders, of all ages, sexual orientations, ethnicities, nationalities, religions and\nbeliefs.\nAbout Domain (part of the CoStar Group)\nDomain is a leading property technology and services marketplace that is home to one of the largest portfolios of property brands in Australia, including the Domain, Allhomes and Commercial Real Estate (CRE) platforms. In 2025, Domain became part of CoStar Group - a global leader in commercial real estate information, analytics, online marketplaces and 3D digital twin technology. We are dedicated to digitising the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives.\nEquity, Diversity & Inclusion\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.\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.\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":5277,"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":["Annual leave","Equity"],"hiring_locations":[],"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":53,"band":"ok","label":"Likely open","p_open":1,"p_active":0.594,"p_room":0.9,"age_days":28,"expected_fill_days":46,"reasons":["conf:1","stale_co","velocity","win:mid","comp:brand"],"computed_at":"2026-10-27T05:46:45Z"},"pay":null,"html_url":"https://alion.io/job/costar-senior-engineer-business-technology","json_url":"https://alion.io/job/costar-senior-engineer-business-technology.json","meta":{"generated_at":"2026-10-27T09:41:12Z","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":10907,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"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-engineer-business-technology"},{"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-engineer-business-technology"},{"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-engineer-business-technology"},{"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-engineer-business-technology\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcostar-senior-engineer-business-technology"}]}