Founding Agentic Engineer

Wwshemi; San Francisco (CA); On-site; USD 150,000 - 300,000; Full time

Job summary

Wwshemi is seeking a founding-level software engineer to own the agent layer end to end in a San Francisco–based on-site role. You will build production agent systems that integrate with real-world workflows and set patterns for scalable agent development, working closely with company leadership.

You will shape the knowledge base, design autonomous failure detection and recovery, and drive evaluation-driven iteration across the platform.

Qualifications

• Two to nine years of professional software engineering experience with a relevant degree.
• Experience building and shipping agentic software in production.
• Familiarity with context engineering and autonomous recovery.

Responsibilities

• Own the agent layer end to end, including context systems and evaluations.
• Develop knowledge base and workflows for autonomous operation.
• Establish how agents are built, measured, and improved across the platform.
• Create tools that enable rapid evaluation and evolution of agents.
• Help grow the team and take on leadership of agentic systems.

Education

Engineering/CS/Quant field degree in progress or completed

Tools

TypeScript

Effect-TS

PostgreSQL

Large language models

Agent evaluation tools

Job description

About the Role

Join the engineering team as a founding-level engineer responsible for the agent layer at a flexible-work marketplace and SaaS company. You will build production agent systems that connect with real-world business workflows, set patterns for how agents are built and improved, and work closely with company leadership.

What You’ll Do

• Own the agent layer end to end, including context systems, self-learning, evaluations, the agent harness, and the meta-harness.
• Build a knowledge base that accumulates information about undocumented systems and improves future integrations.
• Develop workflows that detect production failures, diagnose causes, and recover autonomously.
• Establish how agents are built, measured, and improved across the platform.
• Create tools and processes that enable teams to build, evaluate, and evolve agents quickly.
• Help grow the team and take on increasing leadership of agentic systems.

What We’re Looking For

• Two to nine years of professional software engineering experience, with a degree completed or in progress in engineering, computer science, or a quantitative field.
• Recent experience building and shipping agentic software in production, ideally in an early-stage startup environment.
• Strong experience with context engineering, evaluation-driven iteration, agent tracing, and production agent harnesses.
• Experience building systems that learn from accumulated knowledge or autonomously detect, diagnose, and recover from failures.
• Familiarity with TypeScript, Effect-TS, PostgreSQL, large language models, and agent evaluation tools.

Compensation & Benefits

Annual salary range: $150,000 to $300,000 USD. Visa sponsorship is available, including O-1 sponsorship.

Location

On-site in San Francisco, California, five days per week. US-based candidates with a concrete relocation plan to San Francisco may also be considered.