Production AI Engineer - Enterprise Agent Systems

Varick Agents LTD.; San Francisco, Northern (CA, KY); Hybrid; USD 180,000 - 240,000; Full time

Job summary

Varick Agents LTD. in San Francisco seeks AI Engineers to own the intelligence layer, designing and optimizing agent systems that run in enterprise operations—processing transactions, routing exceptions, and learning from human feedback.

You will work with LLMs, agent architectures, evaluation systems, prompt engineering, retrieval, tool calling, multi-agent orchestration, and production-grade governance. Candidates should have 3+ years of software engineering and strong Python skills, based in

Qualifications

• 3+ years of software engineering with 1–2 years focused on LLM applications or AI systems in production.
• Hands-on experience building agentic workflows with tool calling, retrieval, and multi-step reasoning.
• Deep understanding of prompt engineering, context engineering, and how to get reliable behavior from LLMs.
• Experience building evaluation and quality systems for AI outputs.
• Strong Python skills and backend engineering fundamentals.
• You’ve shipped AI features to real users and dealt with hallucinations, edge cases, accuracy degradation, cost management.
• Based in SF.

Responsibilities

• Design and build agent architectures for complex enterprise workflows (multi-step reasoning, tool calling, exception handling).
• Build and maintain evaluation systems for agent quality, accuracy, safety, and groundedness.
• Design prompt systems, retrieval pipelines, and context engineering strategies for reliable agent behavior.
• Build the feedback loops that allow agents to learn from human corrections and improve over time.
• Optimize inference cost and latency for production workloads.
• Define best practices for agent reliability, observability, and governance.
• Stay current with the latest models, frameworks, and research — and ship what matters into production.

Skills

3+ years software engineering

LLM applications

Python

production systems

Tools

LangGraph

CrewAI

Claude Code/Codex

Qdrant

pgvector

Pinecone

Job description

Varick Agents LTD. in San Francisco seeks AI Engineers to own the intelligence layer, designing and optimizing agent systems that run in enterprise operations—processing transactions, routing exceptions, and learning from human feedback.

You will work with LLMs, agent architectures, evaluation systems, prompt engineering, retrieval, tool calling, multi-agent orchestration, and production-grade governance. Candidates should have 3+ years of software engineering and strong Python skills, based in