AgentMail is building the identity and communication infrastructure for AI agents, starting with email. We are looking for a Founding Engineer with backend and infra focus to architect systems for agents as the end users. Responsibilities: • Design APIs that are intuitive for both humans and LLMs • Architect high-throughput, low-latency systems • Write and review clean, idiomatic code • Maintain comprehensive documentation Qualifications: • Has prior work experience (internships count) as an engineer at a tech company • Has shipped software used in production by real users (work or personal projects) Compensation: • $150k - $250k base salary • 0.5% - 2.0% equity • Breakfast, lunch, and dinner (Doordash) • Medical, dental, and vision insurance • Equinox membership