Job Description
About CoStar Group
CoStar 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.
We 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.
About Domain
Domain 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 (NASDAQ: CSGP), a global leader in commercial real estate information, analytics, online marketplaces and 3D digital twin technology. Together, Domain and CoStar Group is dedicated to digitising the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives.
The Senior Engineer plays a critical role in driving high-quality software development and technical innovation within the Search and Location Squad. They help shape the squad’s technical direction by architecting scalable, high-performance APIs, writing and reviewing high-quality code, and ensuring all technical solutions align with Domain’s broader engineering strategy. Leveraging deep expertise in .NET, OpenSearch, and AWS, the Senior Engineer will lead the delivery of complex features, mentor and uplift junior engineers, and champion engineering best practices to continually enhance the search experience for our customers.
What you'll be doing
Success in this role is measured by mastery across technical strategy, team empowerment, and operational rigor.
1. Technical Excellence
Delivery Quality: Consistently build high-quality, scalable, and reliable solutions in collaboration with peers and Tech Leads.
Best Practices: Champion and adopt Engineering best practices while staying current with industry trends and applying them judiciously.
System Health: Actively contribute to the System Health and Technical Debt backlog, driving engineering efficiency for owned services.
Cross-Domain Influence: Contribute expertise to forums like the dotnet Guild and Architecture Guild, collaborating with Principal Engineers on system improvements.
2. Leadership and Collaboration
Mentorship: Mentor Junior Engineers effectively in solution design and delivery best practices.
Product Alignment: Develop a deep understanding of the product and business domain, collaborating with Product Owners to ensure solutions meet customer needs.
3. Operational Rigor
System Stability: Fulfill on-call duties by responding to and resolving incidents.
Proactive Maintenance: Continuously improve processes and software quality to reduce incident frequency over time, and actively maintain, update, and patch systems.
What Success Looks Like
A cohesive and consistent user experience across all products, even under complexity or scale.
Design embedded into cross-functional ways of working, influencing product discovery and roadmaps.
A strong, empowered team of Designers and Managers doing the best work of their careers.
Business results that reflect design’s value: better engagement, retention, and satisfaction.
Basic Qualifications:
Bachelor’s degree or equivalent.
10+ years in product design (UX/UI), including 5+ years in a design leadership role.
A strong portfolio that reflects user-centred, data-informed design solutions across complex products.
Experience in agile environments and cross-functional collaboration.
Preferred Qualifications and Skills
Deep knowledge of design systems and scalable design practices.
A passion for mentoring and developing high-performing teams.
Strong influencing skills: you're seen as a strategic partner, not just a service function.
Education
Degree in Computer Science, Software Engineering, or a related field.
Core Technical Expertise
Deep expertise in .NET and C#, with strong experience building high-scale, high-performance backend services.
Strong practical experience with AWS cloud services, including ECS, Lambda, and CloudWatch.
Advanced understanding of Object-Oriented Programming (OOP) principles and their practical application in complex systems.
Solid knowledge of modern architectural patterns such as microservices and distributed system design.
Platform & Delivery Experience
Experience designing software solutions built for high scale and high traffic websites.
Proficiency with CI/CD pipelines (e.g., Jenkins) and Git version control.
Familiarity with containerization technologies like Docker.Experience working effectively within Agile environments.
Leadership & Collaboration
Proven ability to mentor and coach more junior engineers.
Experience working in cross-functional teams (collaborating effectively with Product, and Technology peers).
Experience collaborating with Tech Leads to optimize engineering practices and processes for team efficiency.
Desired (Bonus) Qualifications
Security: Familiarity with modern Application Security Practices (OWASP).
Certifications: AWS, Azure, or GCP Certification.
Why join us?
We’re the kind of place you can make a real impact, with a workplace culture where you can be you. It’s a fun, safe space where you’ll always feel you belong.
Perks of the role include:
Hybrid working;
First-rate parental leave;
Continuous opportunities to leap, learn and grow in a team that values creativity and innovation;
We don’t just talk, we do. Every day we solve property problems for Australians and beyond. We encourage our people to see the possibilities, and turn them into realities.
What’s next?
We'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.
Equity, Diversity and Inclusion at Domain
Domain 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).
We 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 [email protected] or leave a message on 1300 858 356 and we will get back to you.
CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing
