Senior GenAI Python Backend Engineer

Capgemini; New York (NY); On-site; USD 105,000 - 115,000; Full time

Benefits offered by this job

Health insurance

401(k)

Paid time off

Life and disability insurance

Job summary

Capgemini in Hanover, NJ is seeking a backend developer to design, build, and maintain Python-based GenAI services and MCP integrations, delivering secure, scalable APIs and workflows.

You will collaborate with product owners and engineers to implement RAG pipelines, orchestration of LLM workflows, and production-grade backend components with FastAPI, async patterns, and robust security. Experience in banking/regulated environments and cloud deployment in AWS is a plus.

Qualifications

• Strong hands-on experience in Python for backend ML or GenAI applications.
• Proven experience building GenAI applications, LLM workflows, and AI-enabled production services.
• Solid understanding of MCP concepts and practical implementation patterns for tools, servers and clients.
• Experience with LLM orchestration frameworks and vector search, embeddings, and grounding patterns.
• Experience developing APIs and backend services using FastAPI and async Python.

Responsibilities

• Design, develop, enhance and maintain Python-based GenAI services, agent workflows and MCP integrations.
• Implement agent orchestration flows including tool calling, function calling and workflow execution.
• Integrate data sources into agent workflows and design RAG pipelines with embeddings and citations.
• Develop production-grade backend services and secure APIs using Python, FastAPI and secure patterns.
• Implement authentication, authorization and entitlement checks; perform testing, logging and monitoring.

Skills

Python backend development

GenAI applications

LLM workflows

MCP concepts

APIs & REST

Async Python

Distributed systems debugging

CI/CD & test automation

Authn/Authz patterns

Banking/regulatory tech experience

Education

Bachelor's degree in Computer Science or related field

Tools

LangChain

LangGraph

FastAPI

REST APIs

Git

CI/CD tools

AWS

Job description

Capgemini in Hanover, NJ is seeking a backend developer to design, build, and maintain Python-based GenAI services and MCP integrations, delivering secure, scalable APIs and workflows.

You will collaborate with product owners and engineers to implement RAG pipelines, orchestration of LLM workflows, and production-grade backend components with FastAPI, async patterns, and robust security. Experience in banking/regulated environments and cloud deployment in AWS is a plus.