Hirenkumar Patel

Hirenkumar Patel

Mentor
5.0
(4 reviews)
US$15.00
For every 15 mins
9
Sessions/Jobs
ABOUT ME
Senior/Lead/Architect Java Web Developer
Senior/Lead/Architect Java Web Developer

Senior AI Engineer and Solution Architect with 15+ years of software engineering experience and 5+ years building enterprise AI solutions.

Specialized in Generative AI, LLMOps, Agentic AI, Retrieval-Augmented Generation (RAG), AI Assistants, and scalable AI backend architectures.

Built production-grade AI platforms for healthcare, fintech, and SaaS organizations using Python, FastAPI, OpenAI GPT/ChatGPT, Claude, Gemini, LangChain, LangGraph, vector databases, and cloud-native technologies.

Experienced in architecting secure AI applications that protect sensitive information through authentication, authorization, encryption, audit logging, role-based access control, and privacy-by-design principles. Familiar with developing software for healthcare environments and implementing engineering practices aligned with HIPAA requirements for handling protected health information (PHI).

Core Expertise

• OpenAI GPT/ChatGPT, Claude, Gemini
• Generative AI & LLMOps
• AI Agents & Agentic AI
• Retrieval-Augmented Generation (RAG)
• Prompt Engineering & Function Calling
• LangChain, LangGraph & Spring AI
• FastAPI & Python
• Vector Databases (Pinecone, pgvector, FAISS)
• AI Guardrails & Conversational Memory
• Secure API Design & OAuth2/JWT
• Privacy-by-Design & Healthcare AI
• AWS, Kubernetes & CI/CD

Available for remote full-time and consulting opportunities across EST, PST, CET, and IST time zones.

Hindi, English
New Delhi (+05:30)
Joined August 2019
EXPERTISE
3 years experience
5 years experience
3 years experience
3 years experience
RAG
2 years experience
Langgraph
1 year experience
2 years experience

REVIEWS FROM CLIENTS

5.0
(4 reviews)
Nadav Stern
Nadav Stern
June 2022
Hirenkumar is a nice guy it was a pleasure to talk with him
Removed User
Removed User
April 2022
Very nice personality, hard working, good explanations.
Frank Wiebeler
Frank Wiebeler
April 2022
Really fast and helpful
Atibhi Agrawal
Atibhi Agrawal
March 2022
Very knowledgable in Java and clearly and patiently cleared doubts.
SOCIAL PRESENCE
GitHub
LLM-Connector-Service
Python
1
0
Coursera_Capstone
Coursera_Capstone
Jupyter Notebook
1
0
Stack Overflow
1 Reputation
0
0
2
EMPLOYMENTS
Senior AI Engineer | AI Architect | Generative AI | Agentic AI | LLMOps | RAG | LangGraph
Independent Consultant
2019-09-01-Present

• Designed and implemented enterprise AI assistants using OpenAI GPT/ChatGPT, LangChain, LangGraph, and Retrieval-Augmented Generation...

• Designed and implemented enterprise AI assistants using OpenAI GPT/ChatGPT, LangChain, LangGraph, and Retrieval-Augmented Generation (RAG).

• Built secure AI services handling sensitive business information using authentication, authorization, encryption, audit logging, and role-based access control.

• Developed AI backend services for healthcare, fintech, and enterprise applications with privacy-first architecture and secure API design aligned with HIPAA software development best practices.

• Integrated OpenAI, Claude, Gemini, and Hugging Face models into production applications using FastAPI and scalable cloud-native architectures.

• Implemented function calling, conversational memory, AI guardrails, semantic search, and vector databases for reliable enterprise AI solutions.

• Optimized AI inference performance and backend scalability while maintaining security, observability, and compliance requirements.

Healthcare Wellness Platform

Designed an AI-powered Healthcare Wellness Assistant using OpenAI GPT and Retrieval-Augmented Generation (RAG) to provide evidence-based wellness information. Implemented secure authentication, role-based access control, audit logging, encrypted communication, prompt guardrails, and privacy-first architecture aligned with HIPAA software development practices. Integrated FastAPI, LangChain, vector databases, and conversational AI to deliver secure and scalable healthcare assistance.

Banking CRM & Trade Analytics Platform

  • Architected an AI-driven platform delivering conversational insights for customer and trade analytics.
  • Developed RAG-enabled capabilities and analytics workflows to support compliance and business intelligence.
  • Delivered AI-powered insights and dashboards for data-driven decision-making.
Python
Redis
Design Architecture
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Python
Redis
Design Architecture
OpenAI
Fastapi
Huggingface
Software architecture
AWS
Prompt Engineering
Langchain
Generative AI
LLM
Pinecone
Vector databases
Langgraph
Ai agent
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Technical Lead
CIGNEX Datamatics
2012-01-01-2019-08-01
  • Led architecture and delivery of enterprise web applications.
  • Designed scalable service-oriented solutions and mentored d...
  • Led architecture and delivery of enterprise web applications.
  • Designed scalable service-oriented solutions and mentored development teams.
  • Established CI/CD, code quality, and automated testing practices.
  • Collaborated with business stakeholders to translate requirements into technical solutions.
Java
SQL
Spring Boot
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Java
SQL
Spring Boot
Web Services Integration
AWS
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Associate Project
Cognizant
2010-08-01-2011-12-01
  • Contributed to application design and low-level architecture using UML modeling techniques.
  • Designed and developed multi-...
  • Contributed to application design and low-level architecture using UML modeling techniques.
  • Designed and developed multi-tier enterprise web applications following J2EE standards and best practices.
  • Collaborated with business stakeholders to gather requirements and provide technical guidance to product teams.
  • Built reusable application frameworks using Struts, Spring, and Hibernate to improve maintainability and accelerate development.
Apache struts
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Apache struts
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PROJECTS
Enterprise AI Order Management Assistant
2026
Integrated an AI-powered conversational assistant into an enterprise Order Management System. Implemented Retrieval-Augmented Generation ...
Integrated an AI-powered conversational assistant into an enterprise Order Management System. Implemented Retrieval-Augmented Generation (RAG), function calling, guardrails, and conversational memory to enable secure order retrieval and creation while preserving existing workflows.
OpenAI
AWS
Langchain
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OpenAI
AWS
Langchain
LLM
Vector databases
RAG
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Real Estate Document Intelligence Platform
2025
Built a document intelligence chatbot capable of answering questions across thousands of documents stored in Google Drive. Implemented se...
Built a document intelligence chatbot capable of answering questions across thousands of documents stored in Google Drive. Implemented semantic search and role-based access controls to provide secure, context-aware responses.
Python
OpenAI
Fastapi
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Python
OpenAI
Fastapi
Prompt Engineering
Langchain
Pinecone
Vector databases
RAG
Ai agent
View more