Raydar
Founding Software Engineer
$240K–$250K
San Francisco, California · Full-time · Posted Oct 1, 2026
- Experience
- 0 to 3 years; recent graduates with exceptional signal are considered.
- Visa sponsorship
- Must be eligible to work in the US.
About the job
Build end-to-end product features across backend systems, machine learning, and infrastructure while helping shape engineering practices as an early hire.
What you'll do
- Build backend systems combining machine learning components with traditional infrastructure and system design.
- Deliver features end-to-end and collaborate with founders and engineers on priorities and execution.
- Help shape engineering culture and process in a small, fast-changing team.
What they ask for
- Technical depth and ability to reason about backend, ML, and infrastructure systems from first principles.
- Demonstrated record of building, such as personal projects or shipped public code.
- High agency, fast learning, clear communication, and motivation to build.
- Willingness to work on-site five days per week in San Francisco and eligibility to work in the US.
Nice to have
- Public code shared with the wider developer community; familiarity with recommendation, ranking, or advertising systems.
- Fluency in PyTorch; experience at a large consumer technology or ad infrastructure company.
Pay
USD 240,000 to 250,000 per year (base salary)
Tools
PyTorch
AI focus
Build backend systems that combine machine learning components with traditional infrastructure and system design.
Model-written summary · the original posting is authoritative