Senior Software Engineer

Responsible for the entire lifecycle of medium-sized projects: engineering design, development, test, production, and deployment and subsequent fixes and improvements.

Finds solutions to unsolved, loosely-defined, highly-technical problems.

Consistently writes, co-writes, and reviews documentation and production-ready code that is clear, concise, tested, and easily understood by others.

Proficient in multiple languages, frameworks, and tools.

Quick and effective in identifying and resolving issues, balancing trade-offs between speed, quality, and technical debt.

Approaches work with a security lens and actively looks for security vulnerabilities both in code and when providing code reviews.

Understands the big picture and system-wide impact, aligning with and contributes to domain wide architecture, security and technology standards

Designs solutions with scalability and future needs in mind.

Collaborates with Product Owners to ensure that solutions are aligned with business and customer needs.

Optimises for performance, maintainability, and security, actively looks for security vulnerabilities both in code and when providing code reviews.

Contribute to the System Health and Tech debt backlog for their respective owned service.

Collaborate with Lead Engineers and Tech Leads on improving process and system change.

Degree in Computer Science / Software Engineering or related field

Strong experience in C# / .NET, Elastic Search or Open Search for distributed backend services

Experience designing software solutions for scale

Experience with high traffic customer-facing services

Experience working with one of the common Cloud Platforms such as AWS, Azure or GCP

DevOps practices, CI/CD, and infrastructure-as-code

Familiar with Cloud Design patterns

Familiar with modern Application Security Practices (OWASP)

Understanding of shift-left testing and how to implement it in practice

Experience with microservices and event-driven architectures

Experience working with Tech leads to optimise engineering practices and processes

Experience mentoring more junior engineers

Experience working in cross-functional teams (Product, Design and Tech)

Hands on experience with AWS (ECS/EKS, Bedrock, IAM, networking)

Experience with AI-assisted engineering workflows

Experience building production AI/LLM systems

TypeScript / Node.js for AWS Lambda and infrastructure-as-code (CDK)

AWS (or other Cloud Platform) Certification

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 - 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.

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 edi@domain.com.au or leave a message on 1300 858 356 and we will get back to you.

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CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing