Lead Software Engineer
Explicitly mentions leveraging Vibe coding and building agents/workflows with modern AI patterns to boost developer productivity and quality.
About the Role
Lead Software Engineer responsible for designing and delivering high-performance web applications for CoStar Suite, driving engineering excellence, mentoring engineers, and improving CI/CD and platform practices. The role is hybrid (Arlington, VA) and focuses on applying modern web and cloud technologies to scale products used by millions.
Job Description
Role
The Lead Software Engineer will design and develop high-performance web applications within CoStar Suite, influence architecture and CI/CD practices, mentor developers, and evaluate emerging technologies to strengthen the platform.
Key Responsibilities
- Design and develop high-performance web applications used globally.
- Drive engineering excellence and continuous improvement across the team.
- Influence and improve CI/CD pipelines and continuous delivery practices.
- Collaborate with software engineers across the organization and mentor junior developers.
- Review code and architecture and promote software development best practices.
- Evaluate emerging technologies to identify opportunities and trends that strengthen the technology platform.
- Maintain an in-depth working knowledge of the Commercial Real Estate (CRE) industry and CoStar’s business model.
Requirements
- Bachelor’s Degree from an accredited, not-for-profit university or college.
- 8+ years of production development experience in modern technologies such as React, Vue, TypeScript, NodeJS, C#, .Net, OpenSearch, Kafka, SQL, and NoSQL.
- Experience with cloud technologies (e.g., AWS, cloud managed services).
- Experience with Agile/Scrum processes and continuous delivery practices.
- Experience in unit, performance, and automation testing.
- Strong track record of building and launching successful products and platforms.
- Strong mentoring, communication, and consensus-building skills.
Preferred Qualifications
- Experience managing a large enterprise code base, ensuring code quality and handling dependencies.
- Prior hands-on experience with C#, NodeJS, and/or React.
- Experience building agents and workflows using modern AI patterns.
- Experience leveraging Vibe coding to improve productivity and quality.
- Commercial Real Estate (CRE) domain knowledge is a plus.
Location & Work Model
- Position located in Arlington, VA.
- Onsite Monday–Thursday with the option to work from home on Friday.
Benefits
CoStar Group offers comprehensive benefits including medical, vision, dental, prescription drug coverage, life and supplemental insurance, mental health counseling, commuter and parking benefits, 401(k) with matching contributions, employee stock purchase plan, paid time off, tuition reimbursement and internal training, on-site or reimbursed fitness center membership, and complimentary snacks and beverages.
Tech Stack
Skills
Experience Level
Employment Type
Benefits
- •Hybrid (Onsite Mon-Thu, Remote Friday)
- •Medical insurance
- •Vision insurance
- •Dental insurance
- •Prescription drug coverage
- •Life and supplemental insurance
- •Legal insurance
- •Mental health counseling (virtual and in-person)
- •Commuter and parking benefits
- •401(k) with matching contributions
- •Employee stock purchase plan
- •Paid time off
- •Tuition reimbursement
- •Internal training and professional development
- •On-site fitness center or reimbursed fitness membership
- •Complimentary coffee, tea, snacks
- •Performance-based incentives