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HappyRobotHappyRobotSan Francisco, CA

Senior Software Engineer - Backend

Builds and operates scalable backend services for AI-native operating system, focusing on real-time infrastructure, system reliability, and production services. Requires 5+ years experience, strong Go skills, and system design expertise.

220k – 250k
On-site5+ YOEBackend Engineering

About the role

What We’re Looking For

  • 5+ years of professional experience
  • Strong backend engineering experience, with a focus on building scalable systems
  • Experience with Go or a strong willingness to work in Go in production
  • Solid understanding of system design, APIs, data modeling, and service reliability
  • Product-oriented mindset and comfort making tradeoffs in a fast-moving environment
  • Experience operating and maintaining production services

What You’ll Do

  • Design, build, and operate backend services that support our core product
  • Improve system reliability, performance, and observability
  • Work on real-time infrastructure that powers voice-based AI workflows
  • Collaborate closely with frontend engineers, product, and founders
  • Ship to production frequently and iterate based on customer needs and system behavior

Why join us?

  • Opportunity to work at a high-growth AI startup, backed by top investors.
  • Rapidly growing and backed by top investors including a16z, Y Combinator, and Base10.
  • Ownership & Autonomy - Take full ownership of projects and ship fast.
  • Top-Tier Compensation - Competitive salary + equity in a high-growth startup.
  • Comprehensive Benefits - Healthcare, dental, vision coverage.
  • Work With the Best - Join a world-class team of engineers and builders.

Skills

GoSystem DesignAPIsData ModelingService ReliabilityBackend EngineeringReal-Time InfrastructureObservability

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