Senior Engineer

Senior Engineer Job Description Key Responsibilities   Engineering & Technical Work Design and develop scalable, high-quality iOS applications. Write, review, and architect code using modern engineering practices. Stay updated with new technologies and apply them appropriately. Help reduce technical debt and improve system health.   Leadership & Collaboration Mentor junior engineers and support their development. Work closely with product managers, designers, and other engineers. Communicate technical concepts to both technical and non-technical stakeholders. Take end-to-end ownership of services (“build and operate” mindset).   Operations Participate in on-call rotations and handle incidents. Maintain and update systems and improve reliability.

Strong iOS development experience using Swift Knowledge of mobile development best practices   Preferred / Nice-to-Have Skills SwiftUI or UIKit Swift Package Manager REST APIs or GraphQL AWS / DevOps tools Firebase RealmSwift   Experience Designing scalable software systems Working in Agile teams Using CI/CD and DevOps practices Collaborating across product, design, and engineering teams   Education Degree in Computer Science, Software Engineering, or related field   Bonus Experience Offline-first mobile apps High-traffic, complex mobile applications Why join us? We’re the right size business for you to make a real impact, with a workplace culture where you can be you. Perks of the role include: Discover your ideal work-life balance with our approach to a hybrid set-up – whether it's making the most of working remotely or from our office Access to Perkbox , giving you discounts across healthcare, entertainment, food, utilities and more Access to LinkedIn Learning , giving you learning opportunities to upskill and work on your personal growth Access to top-notch mental health support through our Employee Assistance Program Continuous opportunities to leap, learn and grow. Company Overview 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 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We've continually refined, transformed, and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. 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. 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 (NASDAQ: CSGP), a global leader in commercial real estate information, analytics, online marketplaces and 3D digital twin technology. Together, Domain and CoStar Group is dedicated to digitising the world's real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives. What's Next? We'll give your application the thoughtful attention it deserves and get back to you as soon as possible. If there's a match, one of our recruitment consultants will reach out-so keep your phone handy! We're genuinely excited about the chance to work together and make a meaningful impact. Equity, Diversity & Inclusion Domain is