Founding Engineer (Full Stack)

Department: Engineering

Location: San Francisco

Employment Type: FullTime

About the Role

You'll be one of the first two founding engineers setting the technical culture for a fast-growing team. The company has seen rapid growth and just closed funding to scale. You'll work across the entire technical stack with significant ownership and autonomy.

What You'll Do

• Own problems end-to-end across multiple technical domains: LLM orchestration, conversation flow, tool integration, voice, UI, and infrastructure

• Debug production issues in real-time—from conversation logs to deployment regressions—and ship fixes quickly

• Design and prototype new features with minimal specification, from generative UI to agent versioning systems

• Build and maintain the core technical pillars: agent orchestration, embeddable adaptive UI, customer-facing platform, evaluation pipelines, and zero-cold-start infrastructure

• Write and iterate on evals that measure system quality and feed improvements back into the product

• Handle the full spectrum of early-stage work: frontend bugs, database migrations, customer debugging, and infrastructure design

What We're Looking For

• Proven track record shipping systems that real users depend on. You can speak to what actually broke in production and how you fixed it

• Strong engineering judgment about what's ready to ship versus what needs more work. You move fast without creating hidden technical debt

• Hands-on experience making LLM systems work at scale. You understand the gap between demo and production, and you know how to close it through design and iteration

• Comfortable working across the stack—not for the title, but because the hardest problems don't fit into one layer

• Ability to take ownership without waiting for direction. If something is broken or unclear, you fix it

• Pragmatic about technology choices. You pick tools based on the problem, not preference

Compensation & Details

Work Arrangement: Full-time, founding-level role

Location

Remote or onsite options available