Senior Engineer (Core Web)

Senior Software Engineer will drive high-quality software development and innovation serving as a key driver of technical direction across engineering initiatives. This pivotal role involves architecting scalable highly performant software systems writing and reviewing code and ensuring all technical solutions align with the broader engineering strategy. Leveraging deep expertise in React TypeScript and the engineer will lead the development of complex features mentor team members and champion engineering quality standards to solve real customer problems and enhance web applications.

What youll do

Build high-quality scalable and reliable solutions applying modern engineering best practices and contributing to continuous improvement across the technology landscape.

Demonstrate strong expertise in web performance optimisation including Core Web Vitals (LCP INP CLS and TTFB) with a focus on delivering exceptional customer experiences.

Contribute to the health stability and evolution of platforms by addressing technical debt improving system performance and influencing engineering standards through collaboration with broader technical communities.

Mentor and support junior engineers while partnering closely with Product Managers and Designers to deliver customer-centric outcomes aligned with business goals.

Take ownership of operational excellence including participating in on-call rotations responding to incidents and proactively improving system reliability security and maintainability.

Ideally youll have

Degree in Computer Science Software Engineering or a related discipline.

Strong expertise in modern frontend technologies including React JavaScript TypeScript and .

Experience building scalable high-traffic web applications using modern architectural patterns such as Micro Frontends SPA and SSR.

Experience working with GraphQL cloud-native technologies (AWS) containerisation (Docker) and modern CI/CD practices.

Proficiency in designing and delivering high-quality software solutions within Agile development environments.

Collaborative mindset with proven experience working across Product Design and Engineering teams to deliver customer-focused outcomes.

Demonstrated ability to mentor junior engineers contribute to engineering best practices and drive continuous improvement within development teams.

Security: Familiarity with modern Application Security Practices (OWASP) preferred

Deep understanding of web performance optimisation including Core Web Vitals (INP LCP CLS and TTFB).

Whats in it for you

Working at CoStar Group means youll 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!

At 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 beliefs.

About Domain (part of the CoStar Group)

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) 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 worlds real estate empowering all people to discover properties insights and connections that improve their businesses and lives.

Equity Diversity & Inclusion

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 were 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 onand we will get back to you.

Whats Next

Well give your application the thoughtful attention it deserves and get back to you as soon as possible. If theres a match one of our recruitment consultants will reach outso keep your phone handy! Were genuinely excited about the chance to work together and make a meaningful impact.