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Software Engineer

CoStar Group

Salary not specified
Oct 30, 2025
Arlington, VA, US
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CoStar Group is looking to hire a Software Engineer to join their finance tech team, responsible for enabling the payment processing functionality of their business. The role involves working on systems that power user experiences for consumers and internal associates across various company channels, solving large-scale, dynamic systems built for growth.

Requirements

  • Experience developing frontend applications using React and Node with TypeScript
  • Experience building RESTful APIs using strongly typed languages
  • Strong grasp of web standards, accessibility, and security best practices.
  • Proficient understanding of source control tools such as Git.
  • Familiarity with CI/CD deployment processes
  • Experience with SQL and databases
  • Experience with Elasticsearch or OpenSearch

Responsibilities

  • Develop and maintain engaging, responsive, and high-performance web applications using React, TypeScript, and Tailwind CSS.
  • Build reusable, scalable, and secure UI components and libraries with a focus on maintainability and performance.
  • Contribute to and maintain shared component libraries and front-end architecture.
  • Build microservices and RESTful APIs to move complex data across domains.
  • Drive and lead software design by developing standards and performing code reviews, resulting in a robust, efficient, and maintainable code base.
  • Continually evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform and develop practices.
  • Develop comprehensive application testing procedures to ensure high-quality applications for tens of thousands of users.

Other

  • This position is in Arlington and is in office Monday through Thursday and work from home on Friday.
  • Collaborate with cross-functional teams, including designers, backend developers, and product managers to transform business needs into technical solutions.
  • Mentor other engineers, working together with shared goals and an open mindset to learn.
  • Bachelor’s Degree required from an accredited, not for profit university or college.
  • We welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position.