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HilbertHilbertSan Francisco, CA

AI Engineer - Core

Builds production-grade AI systems including agent architectures, evaluation pipelines, and workflows for enterprise demand intelligence platform. Owns end-to-end from prototype to deployment, focusing on accuracy, latency, and cost tradeoffs in ambiguous startup environment.

Salary not listed
HybridML Engineering

About the role

Responsibilities

  • Design, build, and maintain AI-driven features and pipelines that serve enterprise customers at scale
  • Architect and implement agent-based workflows using LangChain, LangGraph, or equivalent orchestration frameworks
  • Own systems end-to-end — from experimentation through production deployment and monitoring
  • Build and improve evaluation pipelines to measure, validate, and iterate on AI system performance
  • Collaborate closely with the founding team and cross-functional partners — communicating tradeoffs, progress, and technical decisions with clarity
  • Make pragmatic engineering decisions under ambiguity — ship, learn, iterate
  • Shape the technical direction of the AI stack as the company scales

Requirements

  • Strong software engineer with clean, testable, production-ready code
  • Real experience with LangChain, LangGraph, or equivalent agent/orchestration frameworks (built with them, hit limits, worked around them)
  • Communicate with clarity and conviction (explain to non-technical founders, debate with senior engineers)
  • Take ownership, thrive in ambiguity, move at startup speed

Nice-to-Haves

  • Experience building evals pipelines — designing metrics, running systematic evaluations
  • Backend software engineering experience — building APIs, services, data infrastructure, production systems
  • Exposure to retrieval-augmented generation (RAG), vector databases, or LLM-powered search and recommendation systems
  • Experience at early-stage startups or high-growth environments

Skills

LangChainLangGraphRAGVector DatabasesLLMsAgent WorkflowsEvaluation PipelinesBackend ApisData Infrastructure

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