Senior MarTech Platform Engineer

CoStar Group, Inc.; Sydney; On-site; AUD 150,000 - 190,000; Full time

Job summary

Domain is seeking a Senior MarTech Platform Engineer to design and support integrations, CDP capabilities, and marketing platforms that power personalized customer experiences at scale.

Working across Marketing, Product, Data and Engineering, you’ll build APIs and event-driven services, enable reliable data flows, and collaborate with cross-functional teams to deliver measurable outcomes and scalable technology.

Qualifications

• Experience with MarTech platforms and customer data solutions.
• Strong software engineering and integration capabilities.
• Ability to collaborate with non-technical stakeholders while delivering outcomes.

Responsibilities

• Build and support integrations across Domain's MarTech ecosystem.
• Implement and enhance Customer Data Platform (CDP) capabilities.
• Develop APIs, services, and event-driven solutions connecting customer, marketing, and data platforms.
• Enable reliable customer data flows across the business.
• Support audience segmentation, personalisation, and lifecycle marketing initiatives.
• Partner with Marketing, Product, Data, and Engineering teams to deliver business outcomes.
• Contribute to platform architecture, technical design, and engineering best practices.
• Identify opportunities to improve automation, scalability, and reliability.

Skills

MarTech experience

CDP exposure

API development

Event-driven architectures

Stakeholder communication

Tools

C#/.NET

TypeScript

Java

Cloud platforms

Data integration

Job description

Senior MarTech Platform Engineer

Job Description

About the Role

At Domain (part of the CoStar Group), we're looking for a Senior MarTech Platform Engineer to help build and evolve the technology that powers our customer engagement and marketing capabilities. Working across Marketing, Product, Data, and Engineering, you'll design and support integrations, customer data solutions, and marketing platforms that enable personalised customer experiences at scale. This is a hands-on engineering role focused on platform implementation, system integration, automation, and customer data enablement.

What You'll Do

• Build and support integrations across Domain's MarTech ecosystem.
• Implement and enhance Customer Data Platform (CDP) capabilities.
• Develop APIs, services, and event-driven solutions that connect customer, marketing, and data platforms.
• Enable reliable customer data flows across the business.
• Support audience segmentation, personalisation, and lifecycle marketing initiatives.
• Partner with Marketing, Product, Data, and Engineering teams to deliver business outcomes.
• Contribute to platform architecture, technical design, and engineering best practices.
• Identify opportunities to improve automation, scalability, and reliability.

What You'll Bring

• MarTech Experience Experience working with MarTech platforms and customer data solutions, including exposure to technologies such as: Customer Data Platforms (CDPs) Tealium Braze GA4 Mixpanel Snowflake Marketing Automation and Lifecycle Marketing platforms
• Technical Experience Strong software engineering and integration experience, including: C#/.NET, TypeScript, or Java API development and system integrations Cloud platforms and services Event-driven architectures Data and platform integration projects Modern software engineering practices
• About You Strong problem-solving and analytical skills. Comfortable working with both technical and non-technical stakeholders. Able to balance business needs with technical solutions. Ownership mindset with a focus on outcomes. Collaborative, adaptable, and eager to learn. Passionate about building scalable technology that delivers great customer experiences.

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 - 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.

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 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 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].