Software Engineer, AI Agents

The role

You will own the intelligence at the core of Blockit by designing and iterating on agent architectures. You will build and maintain scheduling agents that autonomously coordinate meetings across people, time zones, and constraints.

What you will do

• Write and refine prompts across our agent system
• Build and maintain evals to measure agent quality and catch regressions
• Debug agent failures
• Implement new agent capabilities as user needs expand
• Experiment with new architectures and techniques as models improve
• Instrument and analyze agent behavior to find patterns and failure modes

Required qualifications

• 2+ years of experience shipping and owning production software
• Strong backend engineering skills, with the ability to work across the stack when needed
• Experience working with LLMs in production systems (or a demonstrated ability to learn quickly in this space)
• Deep curiosity about agent architectures and how the industry is evolving beyond simple prompt-based systems
• Clear, structured communicator

About the company

Blockit is building an autonomous time agent that handles the complexity of scheduling. The company is backed by Sequoia.