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# Tech Mobile Agentic AI Developer

- **Company:** ZENITH SYSTEM SOLUTIONS, INC.
- **Location:** St. Louis, MO, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** LangGraph Framework, Application Programming Interfaces (APIs), Continuous Integration, Distributed Systems, JSON, Python (Programming Language), PostgreSQL, OpenAI, Search Technologies, Service Design, Software Engineering, SQLAlchemy, Data Streaming, Retrieval-Augmented Generation, Large Language Models, Prompt Engineering, Git, Fastapi, Kubernetes, Api Design, Docker, Microservices
- **Published:** October 2, 2026
- **Apply:** https://www.dice.com/job-detail/9547c25b-57ce-46dd-9a88-0c41947afbff

## About the Role

10+ years of software development with strong Python expertise in production environments

 - 2+ years hands-on LLM development (LangChain, LangGraph, or equivalent frameworks)
 - RAG pipeline experience - embeddings, vector search, re-ranking, answer generation
 - LLM APIs - OpenAI Chat Completions, Responses API, streaming, tool calling
 - Async Python - asyncio, httpx, FastAPI
 - Prompt engineering - system prompts, few-shot, structured JSON output
 - Circuit breaker patterns, retry logic, resilient service design
 - PostgreSQL and async ORMs (SQLAlchemy async / Alembic)
 - Git, CI/CD, Docker, Kubernetes basics
 - Strong system design skills - microservices, distributed systems, API design