Senior QA Engineer

CoStar Group, Inc.; Sydney, Melbourne; On-site; AUD 120,000 - 180,000; Full time

Job summary

CoStar Group is seeking a Senior QA Engineer to lead quality initiatives across product and engineering teams. You will coach, mentor, and advocate shift-left testing while embedding quality into the SDLC.

Expect hands-on automation work using Cypress, Playwright, Cucumber, and Postman, and collaboration with product managers, designers, and engineers to manage risk and improve testability. You will drive automation strategy, advance testing coverage, and shape quality standards within CI/CD

Qualifications

• Extensive experience implementing shift-left and quality assistance testing methodologies within agile product development environments.
• Strong expertise in quality engineering across frontend, backend, API, mobile, and end-to-end, including Cypress, Playwright, Cucumber, Postman, and related tooling.
• Experience working with CI/CD pipelines, Jenkins, Github and modern software delivery practices.
• Excellent communication, collaboration, stakeholder management, and organisational skills.
• Familiarity with non-functional testing principles, including performance, security, accessibility and reliability testing; AI testing tools are a plus.

Responsibilities

• Champion shift-left testing practices and embed quality throughout the software development lifecycle.
• Design, implement, and maintain automated testing frameworks across web, API, and mobile platforms.
• Drive effective testing strategies balancing unit, integration, API, end-to-end, accessibility, and exploratory testing.
• Partner with Engineers, Product Managers, and Designers to identify risks early and improve testability.
• Coach and mentor engineers on quality engineering best practices, automation, and testing approaches.
• Drive continuous improvement of quality standards, tooling, and processes.
• Advise on embedding automated testing and quality gates into CI/CD pipelines.
• Foster a culture of shared ownership for quality across teams.
• Support non-functional testing practices including performance, security, and accessibility testing.

Skills

Shift-left testing

Quality assurance practices

Test automation

Quality coaching

Leadership

Education

Bachelor's degree in Computer Science or related field

Tools

Cypress

Playwright

Cucumber

Postman

Job description

Senior QA Engineer

Job Description

The Senior QA Engineer will drive quality engineering excellence across product and engineering teams, acting as a quality coach, mentor, and advocate for shift-left testing practices. This pivotal role focuses on embedding quality throughout the software development lifecycle by partnering closely with engineers, product managers, and designers to build quality in from the earliest stages of development. Leveraging deep expertise in test automation, quality assurance practices, and modern delivery pipelines, the Senior QA Engineer will guide teams in adopting effective testing strategies, improving automation coverage, reducing production risk, and delivering exceptional customer experiences. The role combines hands-on technical expertise with strong leadership, coaching, and collaboration skills to continuously raise the quality maturity of engineering teams. The Senior QA Engineer can be based in either Sydney or Melbourne.

What You’ll Do

• Champion shift-left testing practices and embed quality throughout the software development lifecycle.
• Design, implement, and maintain automated testing frameworks across web, API, and mobile platforms using tools such as Cypress, Playwright, Cucumber, and Postman.
• Drive effective testing strategies that balance unit, integration, API, end-to-end, accessibility, and exploratory testing.
• Partner with Engineers, Product Managers, and Designers to identify risks early, improve testability, and ensure quality is considered during solution design.
• Coach and mentor engineers on quality engineering best practices, automation, and effective testing approaches.
• Drive continuous improvement of quality standards, tooling, and processes.
• Advise on best practices for embedding automated testing and quality gates into CI/CD pipelines.
• Foster a culture of shared ownership for quality by enabling teams to build, test, and release software with confidence.
• Support and guide non-functional testing practices, including performance, security, and accessibility testing.

Ideally You’ll Have

• A degree in Computer Science, Software Engineering, Information Technology, or a related discipline.
• Extensive experience implementing shift-left and quality assistance testing methodologies within agile product development environments.
• Strong expertise in quality engineering across frontend, backend, API, mobile, and end-to-end, including experience with Cypress, Playwright, Cucumber, Postman, and related tooling.
• Experience working with CI/CD pipelines, Jenkins, Github and modern software delivery practices.
• Strong understanding of software architecture, quality risks, and testability considerations.
• Proven experience influencing engineering teams and coaching developers to adopt quality engineering best practices and shared ownership of quality.
• Excellent communication, collaboration, stakeholder management, and organisational skills, with the ability to influence teams without direct authority.
• Familiarity with non-functional testing principles, including performance, security, accessibility and reliability testing.
• Familiarity with AI-assisted software development, AI testing tools, and quality engineering practices for validating AI-generated code is optional but will be highly regarded.

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 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 [e-mail] 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.

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, 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 37 years, giving us the perspective to create truly unique and valuable products and services. We've continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry and for our customers. 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.

CoStar Group is also committed to compliance with all fair employment practices regarding citizenship and immigration status. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access www.costargroup.com/careers as a result of your disability. You can request reasonable accommodations by sending an email to [e-mail].