Senior GenAI & Python Engineer - Remote (Chicago)

Siri InfoSolutions Inc; Chicago (IL); On-site; USD 150,000 - 210,000; Full time

Job summary

Siri InfoSolutions Inc in Chicago, with remote flexibility, seeks a Senior GenAI/Python Engineer to build and evolve LLM-powered agentic applications. You will design intent classification, domain-specific agents, and JSON-driven extraction pipelines for complex inquiries.

Collaborating with platform, data, and product teams, you will deliver robust Python solutions, FastAPI-based microservices, and scalable orchestration patterns for production readiness.

Qualifications

• 5+ years of advanced Python development experience with production-grade coding practices.
• Hands-on experience building GenAI/LLM applications in production using model APIs (OpenAI/Azure OpenAI/Anthropic).
• Experience building LLM-powered agents, intent classification, and multi-step orchestration.
• Hands-on experience with frameworks/patterns like LangChain, LangGraph, LlamaIndex, function calling, tool use, or custom orchestration.
• Strong experience with JSON schema enforcement, Pydantic, retry/repair strategies, and validation logic.
• Experience with RAG and vector search concepts (embeddings, chunking, reranking, entity resolution).
• Strong API development experience using FastAPI or similar (Flask/Django).
• Async Python and orchestration of parallel LLM/API calls.
• Strong SQL skills and handling large analytical datasets.
• Cloud experience, preferably Azure; AWS or GCP acceptable.
• Excellent communication and collaboration with cross-functional teams.

Responsibilities

• Build and enhance LLM-powered agentic applications using Python.
• Develop intent classification, domain-specific agent workflows, and extraction pipelines for complex user questions.
• Create NLP pipelines that convert user utterances into accurate JSON query payloads with filters and rankings.
• Integrate semantic search/vector retrieval for entity resolution and disambiguation flows.
• Design, build, and consume FastAPI-based microservices.
• Implement async orchestration for parallel LLM calls and downstream integrations.
• Develop prompt engineering patterns, structured output enforcement, and guardrails.
• Create evaluation harnesses, test sets, and regression tests to measure extraction accuracy.
• Document architecture, data contracts, and API designs for production readiness.

Skills

Python

GenAI/LLM

FastAPI

JSON Schema

LangChain

Pydantic

Docker

CI/CD

SQL

Azure

Async IO

APIs

Vector search

Tools

LangChain

LlamaIndex

Weaviate

Pinecone

OpenSearch

Job description

Siri InfoSolutions Inc in Chicago, with remote flexibility, seeks a Senior GenAI/Python Engineer to build and evolve LLM-powered agentic applications. You will design intent classification, domain-specific agents, and JSON-driven extraction pipelines for complex inquiries.

Collaborating with platform, data, and product teams, you will deliver robust Python solutions, FastAPI-based microservices, and scalable orchestration patterns for production readiness.