Tech Mobile Agentic AI Developer
ZENITH SYSTEM SOLUTIONS, INC.
St. Louis, MO, United States
10 days ago
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Role details
Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
2 years minimum
Working hours
Regular working hours
Job source
Tech stack
LangGraph Framework
Application Programming Interfaces (APIs)
Continuous Integration
Distributed Systems
JSON
Python (Programming Language)
PostgreSQL
OpenAI
Search Technologies
Service Design
Software Engineering
SQLAlchemy
+10 more
Data Streaming
Retrieval-Augmented Generation
Large Language Models
Prompt Engineering
Git
Fastapi
Kubernetes
Api Design
Docker
Microservices
Requirements
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
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