Founding Engineer

AgentMail (YC S25); San Francisco (CA); On-site; USD 150,000 - 250,000; Full time

Benefits offered by this job

Breakfast, lunch, and dinner (Doordash

Medical, dental, and vision insurance

Equinox membership

Job summary

AgentMail in San Francisco is seeking a Founding Engineer with a backend and infrastructure focus to architect systems for agents as end users.

Design scalable APIs, build high-throughput services, and contribute to a robust engineering culture from day one, including documentation and best practices across the stack.

Qualifications

• Requires prior engineering experience at a tech company (internships count).
• Has shipped software used in production by real users.

Responsibilities

• Design APIs intuitive for humans and LLMs.
• Architect high-throughput, low-latency systems.
• Write and review clean, idiomatic code.
• Maintain comprehensive documentation.

Skills

Engineering experience

Production software shipped

Job description

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