Raydar
Software Engineer, AI Infrastructure
$160K–$300K
San Francisco, California · Full-time · Posted Sep 30, 2026
- Experience
- At least 1 year of full-time professional engineering experience; internships do not count.
About the job
Build and improve core infrastructure for an automated software agent, including context management, browser automation, testing, and user-informed fixes.
What you'll do
- Develop agent context-management systems and dependable browser automation, including addressing website screening.
- Reduce token usage through deterministic logic; refine prompts and create test environments and performance benchmarks.
- Gather user feedback and ship fixes to improve the agent’s performance on realistic tasks.
What they ask for
- At least 1 year of full-time professional engineering experience; internships do not count.
- Track record building stateful memory components, browser automation tooling, or similar AI-agent infrastructure.
- Comfort editing prompts in detail and explaining the reasoning behind adjustments.
- Based in San Francisco or willing to relocate; able to work in the office five days per week.
Nice to have
- Previous founding-engineer experience in an unstructured startup setting.
- Ongoing open-source contributions, ideally to a project with a sizable following; experience with large language model-powered systems.
Pay
USD 160,000 to 300,000 per year (base salary)
AI focus
Build infrastructure for an automated software agent, refine its prompts, reduce token consumption, and benchmark its performance.
Model-written summary · the original posting is authoritative