Senior Software Engineer, Applied AI (Mexico City)

The role

You will join a small cross-functional team to build AI agents and an agent platform. The work involves LLM-powered agent design, backend service architecture, tool integration, and knowledge infrastructure.

What you will do

• Design, build, and own core components of the agent platform
• Build and evolve the capabilities layer including APIs and service integrations
• Architect the knowledge and memory infrastructure
• Design and implement the trust and safety framework
• Contribute to agent evaluation and testing infrastructure
• Partner with Operations to identify automation opportunities
• Mentor other engineers on the team

Required qualifications

• 5+ years of backend engineering experience building and operating production systems
• Hands-on experience with LLMs and AI agents (orchestration, RAG, tool/function calling, or similar)
• Strong API design and system integration skills
• Product-minded: questions requirements and contributes to product decisions
• Proven ownership of complex projects in ambiguous, early-stage environments

Benefits

• Welcoming and casual environment
• Great benefits
• Wellness program offerings
• Company retreats

About the company

Justworks helps businesses get off the ground by enabling them to focus on running their business by solving HR issues. They are a data-driven company that works in a supportive, entrepreneurial environment.