Staff 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.

As a Staff Software Engineer, you will design, develop, and support the most critical features and infrastructures at Radius. The ideal candidate will be excited for the challenge to help drive product design, usability, APIs and user-centric online applications, business logic, performance, scalability, and 24x7 reliability. As a key member of our senior staff, you’ll evaluate and present solutions and alternatives so management can make informed decisions.


  • Working within Agile methodology, collaborate with multiple stakeholders from the functional spec stage to the final release of features and products.
  • Scale distributed applications, make architectural tradeoffs applying synchronous and asynchronous design patterns, write code, and deliver with speed and quality.
  • Expertly analyze and troubleshoot the app, data engineering, and cache solutions for the massive Radius  infrastructure, with hundreds of servers.
  • Diagram complex architectures.
  • Lead by example and communicate effectively with peers.


  • 7+ years experience in software design, development, and algorithm-related solutions.
  • Bachelor’s Degree or above.
  • Expert knowledge of computer science, with strong competencies in data structures, algorithms, and software design.
  • Experience with object-oriented design, coding, testing patterns, and programming languages (Java, C++, C#, and the like).
  • Experience with relational databases (transactional and non-transactional), database architecture, and distributed transaction management.

Preferred Qualifications:

  • Master’s Degree
  • Experience with SAAS/PAAS architecture
  • Advanced knowledge of Java 8 and Elasticsearch
  • Advanced knowledge of AWS components and how they’re used to create robust designs

Radius is an Equal Opportunity Employer.

Meet Some of Radius's Employees

Darian S.


Darian is an entrepreneur who worked at Facebook and eBay after studying computer science and philosophy at UC Berkeley—before co-founding Radius.

Wes H.

VP of Strategic Accounts

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.

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