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About the Role

BizBuySell is looking for a Frontend Engineer who is passionate about building intuitive, high-performance web experiences that simplify the complex process of buying and selling a business for both buyers and sellers. This role is central to building compelling experiences in our platform with native support to multiple languages, currencies, and locale preferences.

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.
• Analyze technical requirements and architect new components and web pages.
• 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.
• Gain a deep understanding of the company's business domain and products.

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.
• Excellent communication and collaboration skills.
• Experience building and deploying web applications to a cloud platform (AWS, Azure).
• Experience with relational databases (e.g., SQL Server, MySQL).
• Experience with software testing frameworks (e.g., Jest, Mocha).
• Deep understanding of software design patterns and principles.
• 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.

Skills

• ASP.NET Core MVC
• Angular
• Vue
• TypeScript
• HTML5
• CSS
• JavaScript
• WCAG-compliant
• Agile development
• Cloud platform (AWS, Azure)
• Relational databases (SQL Server, MySQL)
• Software testing frameworks (Jest, Mocha)
• Software design patterns
• Microservices architectures
• AI-assisted development tools

Location

• San Francisco

Work Type

• Onsite

Education Level

• Bachelor's degree

Salary/Compensations

• $125,000 - $172,000

Benefits

• Generous compensation and performance-based incentives
• Internal training
• Tuition reimbursement
• 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
• On-site fitness center and/or reimbursed fitness center membership costs
• Access to CoStar Group’s Employee Resource Groups
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

About the Company

• 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.
• 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.
• 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.
• Buying and selling a business is time consuming and arduous process.
• We are on a mission to automate that complex process into easy and manageable one for both sellers as well as buyers.

Equal Opportunity

• CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing.
• CoStar Group is committed to creating a diverse environment and is proud to be an equal opportunity workplace and affirmative action employer.
• All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.
• CoStar Group is also committed to compliance with all fair employment practices regarding citizenship and immigration status.
• If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access www.costargroup.com/careers as a result of your disability.
• You can request reasonable accommodations by sending an email to recruitaccommodation@costar.com.