Costar
Frontend Engineer - BizBuySell - San Francisco
US-CA San Francisco · Full-time
Work authorization required$125k-$172kDetected 8 days ago
JavaScriptTypeScriptVue.jsAngularHTMLCSS.NETCode ReviewSQLMySQLAWSAzureCloud PlatformsAccessibilityJestMochaCommunicationCollaborationMentoring
About the role
- Frontend Engineer - BizBuySell - San Francisco Job Description CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces.
- By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.
- Buying and selling a business is time consuming and arduous process.
Responsibilities
- Design, develop, and support high-traffic, real-time web applications using ASP.NET Core MVC on the backend and Angular, Vue, TypeScript, HTML5, CSS, and JavaScript on the frontend, ensuring they are performant, maintainable, and reusable.
- Build responsive, accessible (WCAG-compliant) interfaces that work reliably across browsers and devices.
- Lead in establishing architectural best practices and mentor junior team members
- Implement product features, refine specifications, and continuously improve code quality.
- Apply software design patterns and best practices for building reusable and maintainable code.
- Participate in code reviews, source control management, build automation, and testing processes.
- Take ownership of assigned tasks and deliver solutions from concept to implementation.
- Collaborate with engineers, product managers, and business partners on product design, feature development and delivery.
- We continue that effort today and are always working to improve and drive innovation.
- BizBuySell operates the internet's largest and most heavily trafficked business for sale marketplaces, with more business listings, more unique users, and more leads delivered than any other platform.
Requirements
- Bachelor's degree from an accredited, not-for-profit, in-person University or College
- A track record of commitment to prior employers.
- Strong working knowledge of modern web technologies (HTML5, CSS, JavaScript).
- Experience with a modern SPA framework (Angular, Vue, etc.) and TypeScript.
- Proven ability to write clean, maintainable, and well-documented code.
- Experience working in an Agile development environment.
Nice to have
- Experience with relational databases (e.g., SQL Server, MySQL).
- Experience with software testing frameworks (e.g., Jest, Mocha).
- Experience in microservices architectures.
- Experience mentoring junior developers.
- Effective use of AI-assisted development tools (e.g., Claude Code, Copilot) to accelerate delivery while maintaining strong code quality and architectural judgment.
- What's in it for You
- When you join CoStar Group, you'll experience a collaborative and innovative culture working alongside
- CoStar Group also invests in
Compensation
- $125,000 - $172,000
Benefits
- 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
- 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
- On-site fitness center and/or reimbursed fitness center membership costs (location dependent)
Company info
- 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.
- This is how we deliver for our customers, our employees, and investors.
- Our customers include small business buyers, sellers, owners, brokers, and others who need our information and services to help them buy or sell a business or franchise.
- We are on a mission to automate that complex process into easy and manageable one for both sellers as well as buyers.
- This role is central to building compelling experience in our platform with native support to multiple languages, currencies, and locale preferences.
- the best and brightest to empower our people and customers to succeed.
- We offer you generous compensation and performance-based incentives.
Visa & Work Authorization
- However, please note that CoStar Group is not able to provide visa sponsorship for this position
This listing is sourced directly from Costar's careers page and normalized into a canonical job model.