Senior Front End Engineer

We are looking for someone who enjoys building frontend systems that operate at the intersection of mobile, platform, and 3D workflows. In this role, you'll work closely with iOS, Android, and 3D engineering teams to develop embedded frontend experiences, support capture and review workflows, and integrate Matterport technology into CoStar's marketplaces. This is not a native mobile or 3D rendering role, but a frontend engineering position focused on building reliable, maintainable, and scalable frontend functionality that lives alongside mobile products., * Design and deliver high-quality Front End systems and user interfaces using TypeScript and modern frontend frameworks, with a strong focus on maintainability, and scalability.

• Build components and experiences that support and extend mobile workflows by embedding the components into native applications
• Develop complex workflows which can run offline and support two-way communication between native applications and web components
• Utilize libraries and frameworks to visualize spatial data within mobile components
• Stay current with evolving mobile and TypeScript ecosystems, applying new tools and patterns where they provide clear value.
• Work with a cross-functional team of product managers, designers, mobile engineers, and platform engineers to deliver features that integrate into CoStar's mobile products and marketplace ecosystems.
• Collaborate closely with 3D engineering teams to integrate frontend experiences with 3D-powered services
• Champion frontend best practices including TypeScript patterns, strong typing, performance optimizations, and clean architectural design.
• Create prototypes or proof-of-concepts to validate new frontend ideas, integrations, or platform capabilities where they intersect with mobile or marketplace products.
• Implement and maintain appropriate unit and integration tests to ensure frontend reliability and long-term stability.
• Work closely with QA and customer-facing teams to triage issues, maintain existing functionality, and improve overall product quality.

• 5+ years of experience designing and delivering frontend applications using TypeScript
• Experience working with cross-functional teams including Product, Design, and Engineering
• Experience writing maintainable code and participating in code reviews
• Experience implementing unit and integration tests
• Familiarity working with frontend systems that integrate with backend services or platform APIs

Preferred Requirements:

• Familiarity with WebGL concepts or visualizing spatial data in frontend applications
• Experience working adjacent to 3D systems or data pipelines
• Experience using frontend frameworks or libraries to visualize maps, spatial data, or capture progress
• Exposure to mobile workflows, field tools, or capture-based products
• Experience building prototypes or proof-of-concepts
• Experience supporting frontend features used by consumer or marketplace platforms
• Prior experience in real estate, mapping, visualization, or geospatial products

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
• Access to CoStar Group's Diversity, Equity, & Inclusion Employee Resource Groups
• Complimentary in office gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks, This position offers an annual base salary range of $177,000 minimum - $211,000 maximum based on relevant skills and experience and includes a generous benefits plan.

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. Learn more about Matterport This role is located in our Sunnyvale, CA office and has a schedule of 4 days on-site and 1 day work from home., CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing