Costar Group
Provides commercial real estate data, analytics, and marketing services.
Senior Software Engineer (C#/React)
Develop and maintain C# microservices and React front-ends for a proprietary CRM.
Job Highlights
About the Role
• Build customer‑facing web applications using React and TypeScript. • Develop microservices and RESTful APIs with C# and .NET Core. • Lead software design, establish standards, and conduct code reviews to maintain an efficient, maintainable codebase. • Assess emerging technologies to enhance CoStar’s platform and adopt best practices. • Create comprehensive testing procedures for high‑quality applications used by tens of thousands of users.
Key Responsibilities
- ▸web development
- ▸api development
- ▸code reviews
- ▸tech evaluation
- ▸testing
What You Bring
• Minimum 5 years of software development experience. • Experience architecting, designing, and building large‑scale, distributed, service‑oriented systems in an agile environment. • Proficiency in developing front‑end applications with React. • Ability to build RESTful APIs using C#. • Strong knowledge of Git version control and CI/CD deployment processes. • Bachelor’s degree from an accredited, not‑for‑profit university or college. • Proven commitment to prior employer. • Experience with SQL databases. • Experience with Elasticsearch or OpenSearch. • Strong communication skills with both business and technical partners. • Data modeling experience across conceptual, logical, and physical designs.
Requirements
- ▸5 years
- ▸distributed systems
- ▸react
- ▸c#
- ▸git
- ▸sql
Benefits
CoStar promotes a collaborative and innovative culture, offering competitive compensation, performance incentives, professional development, and a comprehensive benefits package that includes health coverage, retirement plans, stock purchase, tuition reimbursement, and wellness resources. • Comprehensive medical, vision, dental, and prescription coverage. • Life, legal, and supplemental insurance. • Mental health counseling (virtual and in‑person) for individuals and families. • 401(k) plan with matching contributions and employee stock purchase plan. • Paid time off, tuition reimbursement, and on‑site or reimbursed fitness center access. • Diversity, Equity & Inclusion employee resource groups and complimentary gourmet coffee and healthy snacks.
Work Environment
Office Full-Time