Agentic AI Engineer - LLM Workflows & Production

Willis Towers Watson; Ciudad de México; Híbrido; MXN 900.000 - 1.500.000; Jornada completa

Descripción de la vacante

Willis Towers Watson in Mexico City seeks an experienced backend/AI engineer to design and implement robust, production-ready AI agent workflows. The role focuses on integrating LLMs with enterprise systems, building reliable orchestration, and ensuring observability and compliance.

You will collaborate with product and security teams to deliver scalable AI services. Candidates should have 2+ years in backend development (C#/Python) and at least 1 year with LLMs, tooling, and vector stores.

Formación

• Minimum 2 years’ experience developing backend or service-based systems using C# and/or Python.
• At least 1 year of hands-on experience working with large language models, prompt engineering, or AI-enabled systems.
• Strong analytical and debugging skills with the ability to reason across APIs, data flows, and AI system behavior.
• Ability to clearly communicate technical decisions and trade-offs to technical and non-technical stakeholders.
• Demonstrated ability to learn and adapt in a rapidly evolving technology environment.
• Programming: C#, Python (production services, async workflows, automated testing).
• Cloud Platform: Azure (compute, storage, identity, deployment pipelines).
• LLM Integration: Claude and/or OpenAI APIs (prompting, tool calling, rate limits, error handling).
• Agent Orchestration: Azure AI Foundry, Microsoft Agent Framework; optional alternatives include LangGraph and LangChain.
• Vector Databases: Pinecone or equivalent (indexing, retrieval, relevance tuning).
• APIs & Integration: RESTful APIs, enterprise authentication, service-to-service integration.
• Observability: Application logging, metrics, and tracing in production environments.

Responsabilidades

• Design, build, and test multi-step agent workflows using established patterns such as ReAct, planner-executor, and tool-chaining.
• Integrate LLMs with enterprise APIs and internal systems, including robust handling of retries, edge cases, and degraded states.
• Implement tool calling, function orchestration, and compensating actions to ensure workflows remain stable under failure conditions.
• Design and implement human-in-the-loop controls, including approvals, escalations, and exception handling where required by business logic or risk considerations.
• Collaborate with product managers, domain experts, and technical stakeholders to refine requirements and translate them into technical designs.
• Develop, maintain, and version prompt logic and supporting documentation in line with agreed standards.
• Build and manage agent memory and retrieval mechanisms using vector databases and retrieval-augmented generation (RAG), ensuring context remains relevant and high-signal.
• Deploy AI services to production environments and actively monitor logs, traces, and metrics to detect and resolve issues.
• Contribute to test coverage, operational runbooks, and incident response practices in collaboration with QA and operations teams.
• Support continuous improvement of system reliability, performance, and maintainability.

Conocimientos

C#

Python

LLM integration

Azure

Agent orchestration

Vector databases

RESTful APIs

Observability

Herramientas

Azure AI Foundry

LangGraph

LangChain

Pinecone

OpenAI APIs

Claude APIs

Descripción del empleo

Willis Towers Watson in Mexico City seeks an experienced backend/AI engineer to design and implement robust, production-ready AI agent workflows. The role focuses on integrating LLMs with enterprise systems, building reliable orchestration, and ensuring observability and compliance.

You will collaborate with product and security teams to deliver scalable AI services. Candidates should have 2+ years in backend development (C#/Python) and at least 1 year with LLMs, tooling, and vector stores.