Costar Group

Costar Group

Provides commercial real estate data, analytics, and marketing services.

4,700Commercial Real EstateResidentialApartmentsHospitalityIndustrialRetailOfficeMultifamilyLandInvestment SalesWebsite

Senior Software Engineer

Design & develop high-performance web applications, mentor team, and improve CI/CD.

Arlington, Virginia, United States
Full Time
Expert & Leadership (13+ years)
-company maintains a drug‑free workplace and performs pre‑employment substance abuse testing.

Job Highlights

Environment
Office Full-Time
Visa Sponsorship
-costar group is not able to provide visa sponsorship for this position.
Security Clearance
-company maintains a drug‑free workplace and performs pre‑employment substance abuse testing.

About the Role

• Design and develop high‑performance web applications used by thousands of users globally • Influence CI/CD pipeline improvements • Collaborate closely with other software engineers across the organization • Mentor junior developers, review code and architecture, and promote best practices • Evaluate emerging technologies to identify opportunities, trends, and best practices • Develop and maintain in‑depth knowledge of the CRE industry and CoStar’s business model • Active role in mentoring developers and building consensus

Key Responsibilities

  • web development
  • ci/cd
  • collaboration
  • mentoring
  • tech evaluation
  • domain knowledge

What You Bring

• Bachelor’s degree required from an accredited, not‑for‑profit university or college • Track record of commitment to prior employers • 6+ years of production development experience in modern technologies (e.g., React, Vue, TypeScript, NodeJS, C#, .Net, OpenSearch, Kafka, SQL, NoSQL) • Demonstrated success building and launching products and platforms • Experience with cloud technologies such as AWS and managed services • Experience in Agile/Scrum processes and continuous delivery practices • Proficiency in unit, performance, and automation testing • Deep understanding of business drivers for the software being built • Experience managing a large enterprise‑level code base, code quality, and dependencies • Experience with C#, NodeJS, and/or React in particular • Excellent written and verbal communication skills

Requirements

  • bachelor's
  • react
  • nodejs
  • c#
  • aws
  • agile

Benefits

Joining CoStar Group means working in a collaborative and innovative culture alongside top talent to empower both people and customers. The company offers generous compensation, performance‑based incentives, and invests in professional growth through internal training and tuition reimbursement. Benefits include comprehensive healthcare, life and legal insurance, mental health counseling, retirement plans with matching contributions, stock purchase options, paid time off, fitness resources, and access to diversity, equity, and inclusion employee resource groups.

Work Environment

Office Full-Time

Apply Now