Senior AI Agent Architect - Production Systems

Liberty Personnel Services, Inc.; New York (NY); On-site; USD 140,000 - 200,000; Full time

Job summary

Liberty Personnel Services, Inc. is seeking a Senior Software Engineer to build production-grade AI agents that empower engineers, quants, and traders in New York.

You will design autonomous agents, integrate RAG, vector databases, and ensure safe production deployment with minimal human babysitting.

You will work with Python, LangChain, LangGraph, and modern AI tooling to deliver reliable, scalable workflows.

Qualifications

• 5-10+ years of software engineering experience.
• Proven track record building AI-powered applications, automation platforms, or agentic systems in production.
• Expert-level Python, including async, typing, packaging, and testing best practices.
• Experience building AI agents that interact with APIs, tools, codebases, and shell environments.
• Strong understanding of RAG patterns and vector databases such as Pinecone, Chroma, or pgvector.
• Familiarity with agent frameworks like LangChain, LangGraph, or similar tools.
• Deep understanding of LLM behavior, constraints, and mitigation strategies.
• Strong system design skills and comfort working independently in a fast-evolving space.
• Experience handling sensitive or proprietary data securely.

Responsibilities

• Designing and implementing autonomous AI agents that execute multi-step workflows across internal systems
• Building and productionizing RAG architectures on top of structured, permissioned data sources
• Developing durable agent memory and orchestration layers for complex workflows
• Creating inter-agent communication patterns so multiple agents can coordinate effectively
• Defining tool schemas and translating ambiguous stakeholder needs into deterministic agent behaviors
• Implementing safeguards against hallucination, prompt drift, context issues, and rate limits
• Partnering directly with developers, quants, and traders to uncover high-value automation opportunities
• Deploying AI agents into production environments and iterating based on real-world feedback
• Evaluating and integrating emerging models, frameworks, and open-source AI tooling into existing systems
• Designing systems to operate reliably with minimal human intervention
• Ensuring sensitive and proprietary data is handled and integrated securely within AI workflows

Skills

Python

Async Python

Typing

Testing

LLM behavior

System design

RAG patterns

Vector databases

Pinecone

Chroma

pgvector

LangChain

LangGraph

APIs integration

Shell environments

Tools

LangChain

LangGraph

OpenAI API

Job description

Liberty Personnel Services, Inc. is seeking a Senior Software Engineer to build production-grade AI agents that empower engineers, quants, and traders in New York.

You will design autonomous agents, integrate RAG, vector databases, and ensure safe production deployment with minimal human babysitting.

You will work with Python, LangChain, LangGraph, and modern AI tooling to deliver reliable, scalable workflows.