About the role

AI Engineer building LLM-powered agentic workflows, evaluation systems, and MCP infrastructure for Superhuman Mail. Supporting Superhuman’s AI productivity platform across backend systems and applied AI.

Responsibilities

Build and evolve Superhuman Mail’s MCP, including new tools, standards, and ways for agents to deliver value to end users
Design and ship agentic workflows and personalization features at scale
Build evaluation systems that measure quality and catch regressions as prompts, models, and tools change
Help choose the right models for each task and explore new models
Partner with teams across Superhuman to provide AI building blocks
Ship quickly while learning and adjust course as the industry shifts
For the ML-leaning variant, help shape the modeling approach, including data collection and generation
Work with Go, Postgres, Redis, Kubernetes, AWS, and TurboPuffer

4–6+ years of software engineering experience with a strong backend foundation
Python or TypeScript experience; Go is a plus
Hands-on experience building and shipping LLM-powered features in production, such as agents or agentic loops
Experience building evaluations to measure and improve LLM quality
Familiarity with MCP servers or tools, or eagerness to learn
Working ML knowledge to reason about model selection and tradeoffs
Builder-oriented approach rather than research focus
Comfort with ambiguity and quickly changing direction
Uses AI to improve personal productivity and team impact
Strong ownership, bias to action, and growth mindset

Excellent health care, including medical, dental, vision, mental health, and fertility benefits
Disability and life insurance options
401(k) and RRSP matching
Paid parental leave
20 days of paid time off per year
12 days of paid holidays per year
Two floating holidays per year
Flexible sick time
Caregiving stipend
Pet care stipend
Wellness stipend
Home office stipend
Annual professional development budget
Professional development opportunities
Equity