Senior Platform Engineer

Radius offers the best software platform for understanding and reaching today’s 18M+ small and mid-sized businesses in the U.S. The platform combines the most accurate, extensive and real-time data set (based on simulations of the US SMB economy) with enterprise-ready, secure, intuitive software for companies that want to more efficiently understand, target and engage with their customers. It is uniquely able to deliver the results of extremely sophisticated data science through a UI that was designed for direct use by marketers.

Radius is a fast-growing, venture-backed startup in the heart of San Francisco. We're developing breakthrough technologies that make it easier for all companies – large and small, established and pioneering – to understand and do business with each other. You will be responsible for designing and building the infrastructure and APIs to serve the primary customer-facing application as well as other internal systems. At Radius, engineers work cross-functionally, as you will touch nearly every part of the codebase to ensure the platform is scalable, robust, and easy-to-use.


  • Work with a team of other talented engineers and product managers
  • Build robust, scalable, integrations using 3rd party APIs
  • Create and maintain a REST API 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


  • 5-10+ years experience as a full-stack or back-end engineer
  • Team lead or management experience
  • Advanced experience with Java
  • Experience with SQL and relational databases
  • Comfortable working in a *nix based environment
  • History of creating professional level software
  • Understanding of networking concepts
  • Passion for the craft of software engineering
  • Experience writing automated tests (JUnit, TestNG)

Additional Preferred Qualifications:

  • Experience with JPA, Hibernate, etc
  • Experience with REST APIs
  • Experience using AWS services
  • Experience with Elasticsearch
  • Experience with a service oriented architecture
  • Experience with performance tuning the JVM
  • Experience scaling of relational databases: including sharding, partitioning, etc
  • Web development with JavaScript
  • Experience leading teams of engineers

Radius is an Equal Opportunity Employer.

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