Radix

Lead Software Engineer, Backend

Radix

full-time

Posted on:

Location Type: Hybrid

Location: Santa MonicaCaliforniaUnited States

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Salary

💰 $180,000 - $220,000 per year

Job Level

About the role

  • Build and maintain backend systems: Design and implement scalable backend services that support high-throughput data workflows and real-time decision-making.
  • Develop robust APIs: Build secure, performant, and reliable APIs that power our platform and integrate with internal and external systems.
  • Collaborate across teams: Work with Product, to ship features end-to-end. Translate ambiguous requirements into technical solutions that have real business impact.
  • Shape our architecture: Contribute to decisions around system design, performance, and scalability. Help define patterns and best practices for a growing engineering team.
  • Own the full development lifecycle: From design and implementation to testing, deployment, and post-release support — you’ll see your work through from start to finish.
  • Improve developer experience: Advocate for code quality, testing, DevOps, and observability, making it easier for the team to ship reliably.
  • Mentor and grow the team: Share knowledge, conduct code reviews, and help junior engineers grow technically and professionally.

Requirements

  • Bachelor’s degree in STEM preferred (additional experience in lieu of a degree is also accepted)
  • 7+ years of software engineering experience, ideally building service-oriented or distributed systems.
  • Proven experience designing, scaling, and maintaining backend systems in production.
  • Deep understanding of software engineering fundamentals and design patterns.
  • Strong SQL skills and experience with relational databases (PostgreSQL preferred).
  • Proficient in Python (FastAPI/SQLAlchemy) or another object-oriented language.
  • Experience with cloud infrastructure (GCP or AWS preferred).
  • Familiarity with DevOps, infrastructure-as-code, and CI/CD pipelines is a plus.
  • Pragmatic problem-solver: you know how to balance ideal architecture with real-world constraints.
  • Comfortable in fast-paced, early-stage environments where your work has direct impact.
Benefits
  • Competitive compensation, including equity
  • Full health, dental, and vision coverage
  • Retirement savings plan through 401(k)
  • Flexible time off
  • Opportunities for company-wide connection and events
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
backend systemsAPIsSQLrelational databasesPostgreSQLPythonFastAPISQLAlchemycloud infrastructureGCP
Soft Skills
collaborationproblem-solvingmentoringcode reviewscommunicationadvocacy for code qualityadaptabilitytechnical knowledge sharingteam growthbusiness impact