Frontend Engineer - BizBuySell - San Francisco

Overview

Frontend Engineer - Biz Buy Sell  – San Francisco

CoStar Group is a leading global provider of real estate information, analytics, and online marketplaces. This role focuses on building intuitive, high-performance web experiences for buyers and sellers on Biz Buy Sell , with native support for multiple languages, currencies, and locale preferences.

• Design, develop, and support high-traffic, real-time web applications using backend ASP.NET Core MVC with frontend technologies including Angular, Vue, Type Script, HTML5, CSS, and JavaScript. Ensure solutions are performant, maintainable, and reusable.

• Build responsive, accessible interfaces that work reliably across browsers and devices (WCAG-compliant).

• 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.

• 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 Type Script.

• 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 to accelerate delivery while maintaining strong code quality and architectural judgment.

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 generous compensation and performance-based incentives and invest 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

• 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 or reimbursed fitness center membership (location dependent)

• Access to CoStar Group’s Employee Resource Groups

• Complimentary beverages and healthy snacks

The final salary or hourly rate will fall within the range based on geographic location, skills, and competencies.

Base Compensation: $125,000 - $172,000

We welcome all qualified candidates who are eligible to work full-time in the United States to apply. Visa sponsorship is not available for this position.

#LI-AV1

#Biz Buy Sell

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