Full Stack Engineer

San Francisco · On-site$150k – $275k + EquityVisa Sponsorship Available

About this role

What we're looking for:

We need a full-stack engineer with 0-5 years of experience who has shipped production products end-to-end and has a backend lean. You should be comfortable working in a fast-paced, ambiguous startup environment and have a track record of building great software at reputable companies (Series B+ startups or strong tech companies). Bonus points if you have experience with AI agents, developer tools, or observability products.

What you'll do:

Build core product experiences across the Judgment platform — agent investigation interfaces, eval workflows, trajectory debugging, verification, and replay systems

Own problems end-to-end: talk to customers, understand where their agents fail, define what should exist, build it, and iterate until it works

Ship across the full stack with a backend emphasis — APIs, data models, internal systems, and product surfaces

Build the Judgment Agent and shape how it runs large-scale investigations across production traces

Design and implement platform systems: workspaces, permissions, billing, usage, SDKs, and terminal-first developer experiences

Work directly with AI teams building production agents, understand their failures, and turn those into product decisions

Company at a glance

Team Size11-50
WorkspaceOn-site
StageSeries A
IndustryOther
Locations
San Francisco, CA, USA ·San Francisco, United States

What happens next

Skip the application pile. I get you in front of the people who decide.

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

A meeting lands on your calendar

When the company wants to meet, I get the call on your calendar. You just show up.

Know someone who'd be great for this?