Senior Software Engineer
CoStar Group3 months ago
San Diego, CA, USASenior
Base Salary
$124k - $187k/yr
Responsibilities
- Design, build, and maintain production applications using C# and .NET.
- Use Claude for code generation, refactoring, debugging, and analysis.
- Build and operate cloud-based solutions on AWS.
- Develop APIs and backend services.
- Collaborate with product, architecture, and engineering teams.
- Participate in system design, code reviews, and technical decision-making.
- Improve application performance, scalability, and reliability.
- Mentor engineers and contribute to engineering best practices.
Requirements
- Bachelor's degree from an accredited, not-for-profit, in-person college or university.
- A track record of commitment to prior employers.
- Strong experience with C# and .NET/.NET Core.
- Hands-on AWS experience, including EC2, ECS/EKS, Lambda, S3, RDS, DynamoDB, and CloudWatch.
- Experience building APIs and backend services.
- Solid understanding of software design principles.
- Experience with Git-based workflows.
- Preferred: practical experience using Claude for coding or code review.
- Preferred: experience with Databricks, microservices or distributed systems, CI/CD pipelines, DevOps practices, infrastructure-as-code with Terraform, CloudFormation, or CDK, and additional AI coding tools.
Benefits
- Comprehensive medical, vision, dental, prescription drug, life, legal, and supplementary insurance.
- Virtual and in-person mental health counseling for individuals and families.
- Commuter and parking benefits.
- 401(k) retirement plan with matching contributions.
- Employee stock purchase plan.
- Paid time off.
- Tuition reimbursement and internal training supporting professional and academic growth.
- On-site fitness center or reimbursed fitness center membership costs where available, plus yoga, Pelotons, personal training, and group exercise classes.
- Employee Resource Groups.
- Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks.
- Located in San Diego, CA, with four days onsite and one day working from home.
About CoStar Group
CoStar Group builds subscription databases, analytics, and online marketplaces for commercial and residential real estate professionals, investors, and advertisers. Its portfolio includes CoStar (research and data), LoopNet (commercial listings), and Apartments.com (rental listings), generating revenue from subscriptions, listings, and advertising. The company is publicly traded on NASDAQ (CSGP) and is headquartered in Arlington, Virginia, with inclusion in the S&P 500 index.