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LinkedIndavid@raydar.xyz

Senior Backend Software Engineer

Fast-growing software company

  • LocationSan Francisco, California
  • TypeFull-time
  • Posted12 October 2026

The role, as published

About the company

Our client is a fast-growing software company.

The role

Raydar is recruiting for this role on behalf of our client. Act as a senior technical lead for backend engineering on a small team, shaping architecture and engineering standards. The work pairs server-side engineering with applied generative AI, in close partnership with researchers, engineers and designers.

What you'll do

  • Design and build backend services that form the core of a software platform.
  • Create infrastructure for AI-driven workflows, media generation pipelines and live data handling.
  • Take ownership of system architecture across many services, and strengthen reliability with automated tests, performance measurement and monitoring.
  • Collaborate with researchers, engineers and designers to deliver new features and APIs.
  • Define coding guidelines and mentor others by example to lift overall engineering quality.
  • Document your work clearly and explain technical choices to colleagues working side by side in an office.

What we're looking for

  • 5 to 10 years of backend engineering experience, with solid fundamentals in algorithms, data structures and system design.
  • A track record of building backend systems that scale, including work with large data volumes, search and retrieval, and background job processing.
  • Hands-on professional use of TypeScript and AWS.
  • At least 12 months of professional experience building applications on large language models or generative AI, including autonomous agent-style systems.
  • Time spent in a startup setting, either early-stage or rapidly growing.
  • A formal university degree.
  • Fluent English in reading, writing and speaking.
  • Ability to work in the office five days a week in San Francisco, as a local resident or able to start immediately.

Bonus points

  • Previous experience as a technical lead, setting direction and code standards for a team.

Benefits

  • Health, dental and vision coverage

Location and work model

  • San Francisco, CA, United States
  • On-site, 5 days per week
  • Full-time

Compensation, as the posting describes it

  • Equity

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