Senior Software Engineer

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Job Description

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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 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. 

As a CoStar Senior Software Engineer on the Research Development team, you will play a key role in building and enhancing the applications our CoStar researchers use across residential, multi-family, tenant and other verticals. You will deeply understand what drives the business for which you are building software. We firmly believe that what separates a good developer from a great one is a deep understanding of the business that they are supporting.

This position is located in Richmond, VA and the work schedule will be 4 days onsite with 1 day remote.

Responsibilities 

Develop and maintain engaging, responsive, and high-performance web applications using React, TypeScript, and Tailwind CSS. Build reusable, scalable, and secure UI components and libraries with a focus on maintainability and performance. Collaborate with cross-functional teams including designers, backend developers, and product managers to transform business needs into technical solutions. Contribute to and maintain shared component libraries and front-end architecture. Write comprehensive unit and integration tests using tools like Jest, React Testing library. Participate actively in code reviews, pair programming, and agile ceremonies. Take an active role in mentoring other developers. Be a subject matter expert in front-end technology stack. Continually evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform and development practices. 

Qualifications 

Bachelor’s Degree required from an accredited, not for profit university or college 5+ years of production development experiencing using modern front-end frameworks. Strong proficiency in React.js, TypeScript and Tailwind CSS. Deep understanding of HTML, CSS, JavaScript, and responsive design. Solid understanding of RESTful APIs and familiarity with front-end build tools (e.g., Webpack, Babel). Strong grasp of web standards, accessibility, and security best practices. Experience working in Agile development environments. Experience in unit, performance and automation testing. Excellent communication, collaboration, and problem-solving skills. A track record of commitment to previous employers. 

Preferred Qualifications 

Experience with any state management libraries like Redux, Context API. Hands-on experience with CI/CD pipelines and version control using Git. Experience with .NET Core and SQL Server with the ability to integrate front-end components into a scalable, secure, and maintainable backend architecture Experience with Relational Database Management Systems (SQL Server) and Document Data Systems (Dynamo, Elastic Search) a plus. Comfortable working across the stack with Node.js on the server-side Nice to have experience with AWS S3, Lambda, SQS, Kafka, Redis. 

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 classesAccess to CoStar Group’s Diversity, Equity, & Inclusion Employee Resource Groups Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks 

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. 

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CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing