Senior/Lead AI/ML Engineer

Company: RyzLabs
Location: Buenos Aires
Type: full_time
Posted: Aug 19, 2026
Views: 4

✨ AI Summary

Ryz Labs is hiring a Senior/Lead AI/ML Engineer in Buenos Aires to design and ship production-grade conversational AI agents with advanced tool use and orchestration. The role is hands-on, embedded with the team, and focuses on building scalable LLM systems in a production AWS environment. Tech stack includes Python, AWS (EKS, Lambda, EventBridge, IAM, Bedrock), MCP or gateway-style architectures, and LLM observability platforms like Arize AX, Langfuse, or Phoenix. Requires proven experience shipping production LLM agents with tool use, strong Python expertise, and familiarity with agent orchestration patterns; experience with AWS Bedrock/AgentCore, LangGraph, or regulated environments is a plus.

At Ryz Labs we are looking for a Senior / Lead AI/ML Engineer to design and ship production-grade conversational AI agents with advanced tool use and orchestration capabilities. This is a hands-on role where you’ll work closely with the internal team to build, scale, and harden real-world LLM systems in a production AWS environment.

You’ll be embedded with the team, contributing directly to architecture decisions and implementation.

Key Responsibilities

  • Design and implement LLM-powered conversational agents in production
  • Build robust agent orchestration systems, including:
    • State management
    • Pause/resume flows
    • Journey and mode routing
    • Failure handling and recovery
  • Develop and integrate tooling via MCP or gateway-style architectures, including:
    • Schema design
    • Authentication & authorization
    • Idempotency handling
    • Auditability
  • Create and maintain custom evaluation frameworks for LLM performance and reliability
  • Operate and deploy systems in a production AWS environment
  • Collaborate closely with internal stakeholders in an embedded delivery model

Required Qualifications

  • Proven experience shipping production LLM agents with tool use
  • Strong expertise in Python
  • Hands-on experience with:
    • Agent orchestration patterns (state machines, routing, retries, etc.)
    • Tool integration frameworks (MCP or similar gateway approaches)
  • Experience working in production AWS environments, including:
    • EKS
    • Lambda / EventBridge
    • IAM
    • Bedrock / Agent runtimes
    • Logging and monitoring systems
  • Experience with at least one LLM observability/evaluation platform in production (e.g., Arize AX, Langfuse, Phoenix)

Preferred / Nice to Have

  • Experience with AWS Bedrock and AgentCore (Runtime + Gateway)
  • Familiarity with Strands, or ability to ramp quickly from LangGraph / LangChain
  • Experience implementing governed memory systems
  • Background in regulated environments (fintech, banking, etc.)

About the Company

Name: RyzLabs

No detailed information available about this company.

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