Senior QA Engineer

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.

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CoStar Group is an Equal Employment Employer; we maintain a drug free workplace and perform pre employment substance abuse testing CoStar Group is an Equal Employment Employer; we maintain a drug free workplace and perform pre employment substance abuse testing From everyone at CoStar Group Careers we want to thank you for your interest in our company.

Founded in 1987, CoStar Group, Inc. (Nasdaq:CSGP) is the leading provider of commercial real estate information, analytics and online marketplaces.

CoStar conducts expansive, ongoing research to produce and maintain the largest and most comprehensive database of commercial real estate information.

CoStar data powers the $17 trillion world of real estate - delivering the sale, lease, property, tenant, contact, reporting and industry information that makes connections happen.

We help our clients make smart investments and decisions.

Eighty three percent of the nation's commercial real estate transactions involve a CoStar subscriber, and the top 95% of the leading 1,000 brokerage firms use CoStar to inform their decisions.

We also help create lasting experiences through our family of marketplaces.

In addition to CoStar, CoStar Group brands and marketplaces include LoopNet, BizBuySell, and Lands of America - collectively attracting more than 25 million monthly unique visitors.

The Network is the nation's most visited apartment listing network, with 45 million monthly visits, allowing renters to find their perfect homes.

connects landowners to their perfect properties, spots and open spaces.

BizBuySell allows small business owners to bring their dreams to life.

And LoopNet connects investors, sellers and brokers with clients who fall in love with their properties.

Headquartered in Washington, DC, CoStar maintains offices throughout the U.S. and in Europe and Toronto, Canada with a staff of approximately 3,700 worldwide, including the industry's largest professional research organization.

CoStar is committed to creating a diverse environment and is proud to be an equal opportunity workplace and affirmative action employer.

All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

CoStar 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 as a result of your disability.

You can request reasonable accommodations by calling 1- or by sending an email to .