Senior Software Engineer

Radius is a fast-growing, venture-backed startup in the heart of San Francisco. Radius applies advanced data science to deliver the freshest, most accurate, and most comprehensive view on 20M+ US companies―from small businesses to the largest enterprises. We build cutting-edge machine learning solutions that help our customers discover markets, acquire customers, and measure performance through an app that’s intuitive, secure, and enterprise-ready.

Radius is looking for a talented software engineer to join our Infrastructure team. We're a new team, working on scaling infrastructure and engineering as we bring on more of the world's top companies as customers. You'll work on projects such as: delivering high-volume data storage, querying, and analytics to all engineering teams; automating our engineering processes to streamline development and reduce time to market; or supporting engineers in designing and scaling their code. This is an exciting time to join as we launch new initiatives and build from the ground up.


  • Work with a team of other talented engineers and product managers
  • Maintain and scale our big data acquisition & querying infrastructure
  • Create and maintain services & APIs for use by other teams within Radius
  • Write production-quality software with an emphasis on scalability and maintainability
  • Provide mentorship to more junior members of the team
  • Identify opportunities for automation and propose approaches and technologies


  • 5-10+ years experience as a full-stack or back-end engineer
  • Strong understanding of computer science fundamentals
  • Advanced experience with Java and Python (additional languages preferred)
  • Experience with SQL and relational databases
  • Comfortable working in a *nix based environment
  • History of creating professional level software
  • Experience with Git
  • Understanding of networking fundamentals
  • Passion for the craft of software engineering
  • Experience writing automated unit and integration tests

Additional Preferred Qualifications:

  • Experience with developing and deploying web APIs (e.g., REST)
  • Experience with distributed systems, both development and production operation
  • Experience with cloud computing (esp. AWS)
  • Experience with NoSQL Databases such as: Cassandra, Elasticsearch, MongoDB, Aerospike
  • Experience with a service-oriented architecture
  • Experience scaling relational databases: replicas, partitioning, etc.

Radius is an Equal Opportunity Employer.

Meet Some of Radius's Employees

Wes H.

Enterprise Sales Director

Wes travels frequently to meet with prospects and customers. He creates positive business relationships and demonstrates how Radius’ data-driven predictive capabilities can help drive demand and revenue for marketers.

Katie G.

Senior Director of Product Marketing

Katie channels the voice of the customer back into product development in order to make sure that Radius’ products solve customers’ real-world problems.

Back to top