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Zstate AI

Posted 28 Aug 2026

AI Engineer

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Employment
Full time
Team
Software Engineering
Posted
28 Aug 2026

About the role

Responsibilities:

  • Design and build multi-step agents using LLMs, tool use, retrieval, and memory in frameworks like LangChain, LangGraph, or similar.
  • Architect single-agent and multi-agent systems: subagents, routing and handoffs, planning, and state management for long-running tasks.
  • Build evaluation frameworks for agent behavior, LLM-as-judge, and deterministic evaluators and use them to iterate on prompts and architecture.
  • Integrate agents with client systems and data sources: APIs, databases, vector stores, and MCP or tool integrations.
  • Deploy agents to production and set up observability, tracing, logging, and error analysis to monitor real-world behavior.
  • Work directly with clients and domain experts to translate a workflow into an agent spec and iterate on it based on production feedback.


Requirements:

  • 3-7 years of experience in backend or full-stack engineering, with a track record of shipping production systems.
  • Hands-on experience building agents with LLM frameworks (LangChain, LangGraph, or similar), including tool use and multi-step reasoning.
  • Experience with prompt engineering and evaluation frameworks and iterating on agent behavior using real feedback.
  • Strong proficiency in Python and/or TypeScript, APIs, and system design; cloud experience preferred.
  • Comfort taking ownership of a project end to end, from architecture to a client using it in production.
  • High ownership, strong execution, and the instinct to improve systems without waiting to be asked.


Nice to Have:

  • Experience with RAG patterns, vector stores, and knowledge retrieval.
  • Experience with agent observability tooling (LangSmith or similar) and debugging agent behavior in production.
  • Experience working directly with enterprise clients on technical scoping and delivery.
  • Exposure to RLHF, SFT, or post-training workflows.

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