Senior AI Engineer, Agent Platform & Safety

Doist; Ciudad de México; Presencial; MXN 1.562.000 - 2.017.000; Jornada completa

Descripción de la vacante

Justworks seeks a senior backend engineer to design, build, and own core components of the agent platform, from the orchestration layer to the tool integrations connecting it to internal systems. You will shape the capabilities layer, APIs, and memory infrastructure to enable agents to operate across services.

You will contribute to the trust and safety framework, define evaluation methods, and collaborate with Operations to identify automation opportunities.

Formación

• 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, not just execution
• Proven ownership of complex projects in ambiguous, early-stage environments

Responsabilidades

• Design, build, and own core components of the agent platform, from the orchestration layer to the tool integrations connecting it to internal systems.
• Build and evolve the capabilities layer: APIs, data access patterns, and service integrations for agents to execute operational workflows.
• Architect the knowledge and memory infrastructure, allowing agents to retrieve the data and act across our systems.
• Design and implement the trust and safety framework, including audit trails, human‑in‑the‑loop controls, and guardrails for safe and auditable AI‑driven operations.
• Contribute to agent evaluation and testing infrastructure, defining how we measure accuracy, reliability, and regression across agent behaviors.
• Partner directly with Operations to understand workflows, identify automation opportunities, and translate process knowledge into agent capabilities.
• Mentor other engineers on the team as it grows.

Conocimientos

Backend engineering

LLMs

AI agents

API design

Product mindset

Ownership

Herramientas

Golang

Ruby on Rails

Javascript

Java

C#

Python

VueJS

MySQL

Kafka

AWS

Git

Memcache

Redis

ElasticSearch

Docker

Terraform

Kubernetes

CircleCI

DataDog

Descripción del empleo

Justworks seeks a senior backend engineer to design, build, and own core components of the agent platform, from the orchestration layer to the tool integrations connecting it to internal systems. You will shape the capabilities layer, APIs, and memory infrastructure to enable agents to operate across services.

You will contribute to the trust and safety framework, define evaluation methods, and collaborate with Operations to identify automation opportunities.