Senior/Lead AI/ML Engineer

    Buenos Aires
    Full-Time
    Senior (7+ yrs)
    Engineering & Development
    Leadership
    Posted on April 23, 2026

    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.)

    Company:  RYZ Labs

    Provides nearshore staff augmentation and technical talent solutions, connecting startups with elite software developers from Latin America.
    Remote-First Company
    11-50 employees
    Software & IT Services
    HQ: United States