Senior Python Agentic AI Developer

Title- Senior Python Agentic AI Developer

Location- St. Louis, MO
Type- Contract
Duration- 12 Months plus extension

About the Team
The TechMobile Agentic AI team builds and operates a production-grade multi-agent AI platform serving 40,000+ daily
interactions for field service technicians across a major telecommunications provider. The platform uses LLM-powered
agents to provide intelligent troubleshooting, equipment lookups, job preparation, and visual inspection through a
conversational natural language interface.
Our tech stack is modern and we work on real AI systems at enterprise scale, not prototypes.
Role Summary:
We are looking for a skilled AI/ML Developer to join our agentic platform team on a contractual basis. You will design,
develop, and deploy LLM-powered agents and pipelines that directly serve field technicians in production. You will work
closely with the platform architect and contribute to the core multi-agent orchestration system.
Key Responsibilities
- Design and develop LLM-powered agents using LangGraph and LangChain frameworks
- Build and enhance multi-agent orchestration pipelines with conditional routing, state management, and error recovery
- Develop RAG pipelines with hybrid search (semantic + keyword), re-ranking, and Reciprocal Rank Fusion
- Implement tool-calling agents with parallel API execution, sequential enrichment chains, and summarization
- Build real-time streaming capabilities (WebSocket / SSE) for conversational AI
- Integrate with Azure OpenAI APIs with circuit breaker patterns and fallback chains
- Implement prompt engineering and dynamic prompt management (DB-backed with in-memory caching)
- Design and implement multi-modal AI features (image analysis with vision models)
- Write production-quality Python code with error handling, logging, observability, and unit tests
- Participate in code reviews, architecture discussions, and sprint delivery
Required Skills & Experience
Must-Have
- 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
Nice-to-Have
- LangGraph StateGraph (conditional edges, node pipelines, compiled graphs)
- Multi-agent systems - orchestration, routing, RBAC-based access control
- Langfuse or similar LLM observability (tracing, token usage, latency)
- WebSocket and SSE streaming protocols
- Multi-modal AI (vision models, image analysis)
- Vector databases (OpenSearch, Pinecone, pgvector)
- AWS services (Aurora PostgreSQL, SSM, IAM, EKS)
- Telecommunications or field service domain experience

Tech Stack
Category Technologies
Language Python 3.11+
Frameworks FastAPI, LangChain, LangGraph
LLM APIs Azure OpenAI (GPT-4)
Databases PostgreSQL (Aurora), OpenSearch (vector)
Messaging WebSocket, SSE, REST
Observability Langfuse, Datadog, Splunk
Infrastructure Docker, Kubernetes (EKS), AWS
CI/CD GitLab CI, Helm, ArgoCD
Package Mgmt uv (Python), pyproject.toml
Testing pytest, unittest, FastAPI TestClient

About Us:
AgreeYa is a global systems integrator delivering competitive advantage for its customers through software, solutions, and services. Established in 1999, AgreeYa is headquartered in Folsom, California, with a global footprint and a team of more than 1,850 staff across offices. AgreeYa works with 500+ organizations ranging from Fortune 100 firms to small and large businesses across industries such as Telecom, Banking, Financial Services & Insurance, Healthcare, Utility & Energy, Technology, Public sector, Pharma & Biotech, and others. Please visit us at Agreeya for more information.
 

AgreeYa is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, gender identity, sexual orientation, national origin, disability, veteran status or other protected characteristics. Visit our website to learn about our Career & Culture.