Senior Software Engineer job at CoStar Group in Sunnyvale, CA

Matterport - Senior Software Engineer Location: Sunnyvale Job Description: Matterport - Senior Software Engineer, SDK Job Description 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 and the NASDAQ 100, 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 Matterport: Matterport is leading the digital transformation of the built world. Our groundbreaking spatial computing platform turns buildings into data, making every space more valuable and accessible. Millions of buildings in more than 170 countries have been transformed into immersive Matterport digital twins to improve every part of the building lifecycle from planning, construction, and operations to documentation, appraisal, and marketing. About the Role: We are looking for a thoughtful and enthusiastic Senior Software Engineer to join our 3D Experiences team. As a developer for the SDK, you will be responsible for tools that enable internal and external customers to build on Matterport’s world-class digital twin platform. The SDK mediates nearly a quarter of Showcase traffic each month (roughly 10–20 million views), powering partner experiences—including AI agent navigation on Homes.com and Apartments.com. You’ll collaborate across product and engineering teams to deliver cohesive platform capabilities and unlock value for developers and other stakeholders. The ideal candidate has strong client-side 3D application development experience, enjoys reasoning about developer-facing APIs, and brings a forward-thinking mindset that enables them to build reliable, testable, and well-documented code. This position is located in Sunnyvale, CA and offers a schedule of Monday to Thursday in office and the option to work from home on Friday. Responsibilities Deliver new SDK capabilities to embed, customize, and extend Matterport’s 3D web application. Define stable, clean APIs (events, observables, proxies) to enable rapid frontend prototyping. Coordinate with QA to preserve and expand test coverage for the SDK and plugins. Champion new optimizations, design patterns, and best practices for our codebase. Own backward compatibility for SDK features by following disciplined engineering practices. Create working prototypes for new concepts, ideas, and capabilities to help clarify direction. Write clean, maintainable, and efficient code and constructively participate in code reviews. Collaborate with a cross-functional team of product managers, designers, and engineers. Basic Qualifications Bachelor’s Degree in Computer Science or related field from an accredited, not for profit, in-person university or college 5+ years building and shipping client-side SDKs or developer-facing libraries (or similar) Strong proficiency in TypeScript, including interface design, type modeling, and ontology Experience in both 2D (React, Angular) and 3D (Three.js, Babylon.js) web frameworks Passionate about developer experience: clear abstractions, docs, examples, and release versioning Strong problem-solving and debugging skills across a nested stack, experience diagnosing issues reported by downstream applications and partners. Team-oriented, able to support teammates through peer review and help release software in a team environment with multiple work streams and consumers. Track record of commitment to prior employers What’s in it for you? When you join CoStar Group, you’ll experience a collaborative and innovative culture working alongside the best and brightest to empower our people and customers to succeed. We offer you generous compensation and performance-based incentives. CoStar Group also invests in your professional and academic growth with internal training and tuition reimbursement. Our benefits package includes (but is not limited to): Comprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug Life, legal, and supplementary insurance Virtual and in person mental health counseling services for individuals and family Commuter and parking benefits 401(K) retirement plan with matching contributions Employee stock purchase plan Paid time off Tuition reimbursement On-site fitness center and/or reimbursed fitness center membership costs (location dependent), with yoga studio, Pelotons, personal training, group exercise classes Access to CoStar Group’s Employee Resource Groups Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks This position offers an annual salary range from $124,000 - $210,000 determined by relevant skills and experience, in addition to a generous benefits plan. We welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position. #LI-KW1 #Matterport CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing