Senior Full-Stack Engineer BizBuySell San Francisco, CA

Senior Full-Stack Engineer - BizBuySell - San Francisco CA

Job Description

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 worlds 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. Weve 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.

BizBuySelloperates the internets 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 andsellinga businessistimeconsuming areon a mission to automatethatcomplexprocessinto easy andmanageableoneforboth sellersas well as role iscentral to buildingcompellingexperienceinourplatformwithnative support to multiple languages currencies andlocalepreferences.

BizBuySell is looking for a Senior Full Stack 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.

Learn more about BizBuySell -

This positionis located inSan Francisco andis 5days onsite.

Responsibilities:

• Design develop and support high-traffic real-time web applications using 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 inestablishingarchitectural best practices andmentorjunior 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 companys business domain and products.

Basic Qualifications:

• Bachelorsdegreefromanaccreditednot-for-profitin-personUniversityorCollege
• Atrackrecordofcommitmenttoprioremployers.

• 5 years of production development experience with C# .Net ( Core)

• 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.

Preferred Qualifications:

• 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 inmicroservices architectures.
• Experience mentoring junior developers.
• Effective use of AI-assisted development tools (e.g. Claude Code Copilot) to accelerate delivery whilemaintainingstrong code quality and architectural judgment.

Whatsin it for You

When you join CoStar Group youll 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 inyour 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)
• Access to CoStar Groups Employee Resource Groups
• Complimentary gourmet coffee tea hot chocolate fresh fruit and other healthy snacks

The final salary or hourly rate offered for this role will fall within the range set forth below based on avariety of factors including but not limited to geographic location skills and competencies.

Base Compensation: $150000 - $210000 (Annually)

We welcome all qualified candidates who are currently eligible to work full-time in the United States toapply. However please note that CoStar Group is not able to provide visa sponsorship for this position

#LI-AV1

#BizBuySell

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

Required Experience:

Senior IC