AI Engineer (Superhuman Mail) - Latin America

Superhuman•San Francisco, CA

6d•CA$128,000 - CA$210,000•Remote

About The Position

Superhuman is hiring an AI Engineer for the Superhuman Mail team. This role is available to candidates based in Argentina, Brazil, or Mexico and is fully remote. The team builds the platform behind Mail’s intelligent, agentic experiences, including the MCP layer that connects Superhuman to users’ tools and personalization features. The work combines backend systems engineering and applied AI, enabling agents to take action for users and helping teams across Superhuman build and ship AI features. The team works with models from OpenAI, Anthropic, and open-source providers, selecting models according to task needs. Engineers have the freedom to innovate and influence the product roadmap. The role involves building and evolving Mail’s MCP, designing scalable agentic workflows and personalization, creating evaluation systems to measure quality and detect regressions, choosing models for different tasks, and partnering with teams across the company. The posting also describes an ML-leaning variant that helps shape the modeling approach, including data collection and generation. Technologies used include Go, Postgres, Redis, Kubernetes, AWS, and TurboPuffer. Employment is administered locally through an Employer of Record, which handles payroll and applicable benefits. Compensation varies by country: Brazil R$562,000–R$669,000; Argentina ARS $152,000,000–$189,000,000; Mexico MXN $1,928,000–$2,294,000. Final compensation depends on experience, qualifications, and local market factors.

Requirements

4–6+ years of software engineering experience with a strong backend foundation.
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 them.
Working knowledge of machine learning sufficient to reason about model selection and tradeoffs.
Comfort with ambiguity and quick changes in direction.
Enthusiasm for using AI to improve personal productivity and team impact.
Strong ownership, a bias to action, and a growth mindset.
Must be based in Argentina, Brazil, or Mexico.

Nice To Haves

Experience with Python or TypeScript; Go is a plus.
Familiarity with MCP servers or tools.

Responsibilities

Build and evolve Superhuman Mail’s MCP, including tools, standards, and new ways for agents to deliver value to end users.
Design and ship agentic workflows and personalization features at scale.
Build evaluation systems to measure quality and catch regressions as prompts, models, and tools change.
Help select the right models for each task and explore new models.
Partner with teams across Superhuman to provide the AI building blocks they need.
Ship quickly, learn, and adjust course as the industry shifts.
For the ML-leaning variant, help shape the modeling approach, including what data to collect and how to generate it.

Benefits

Medical and dental coverage for the employee and their family.
Paid parental leave: statutory leave or 10 weeks, whichever is greater.
Paid maternity leave: statutory leave or 10 weeks, whichever is greater.
Paid time off: statutory leave or 20 vacation days, whichever is greater.
Regional paid holidays.
A 20-day sabbatical after 5 years of service.
Dependent and pet care coverage while traveling for business, up to the local-currency equivalent of $950 USD.
Wellness budget of up to the local-currency equivalent of $120 USD per quarter.
Learning and development budget of up to the local-currency equivalent of $2,000 USD annually for books, courses, and professional training.
Work-from-home support: statutory amount or up to the local-currency equivalent of $200 USD, whichever is greater.