Hi, my name is
Hemant Singh.
I build distributed backend systems & agentic AI architectures.
Software Engineer specializing in enterprise Java/Spring Boot microservices and production GenAI agentic workflows with LangGraph and Python. Turning complex distributed logic and LLM orchestration into high-throughput, fault-tolerant engines.
About Me
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Software Engineer specializing in Java, Spring Boot, and GenAI Agentic Systems.
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Hands-on experience architecting secure logistics backend microservices at Stakrid Logistics, developing high-throughput platforms like SimplyCinema & SimplyBuy, and orchestrating stateful autonomous multi-agent graphs with LangGraph, FastAPI, and Groq.
Here are some technologies I've been working with recently:
- Java & Spring Boot
- LangGraph & LangChain (GenAI)
- Microservices & Apache Kafka
- Python & FastAPI
- PostgreSQL, MySQL & Redis
- Docker & AWS Ecosystem
Where I've Worked
Software Engineer Intern @ Stakrid Logistics
Aug 2025 – Jan 2026
- Built and maintained backend features using Java and Spring Boot, developing secure REST APIs with Spring Security, JWT, OAuth2, and RBAC for 200+ active users.
- Integrated Google Maps APIs for live driver tracking and route optimization, and standardized API contracts using DTOs for smoother frontend-backend integration.
- Eliminated API contract mismatches during frontend integration by standardizing all service layers under a unified Data Transfer Object (DTO) pattern.
- Led code reviews and Git workflows for a 3-person intern team, resolving code conflicts and maintaining consistent development practices.
Featured Engineering Projects
Production distributed backends and autonomous agentic AI architectures.
Featured AI Architecture
BlogAgentic AI
An advanced, production-grade agentic AI blog generation and multi-lingual translation engine built with LangGraph, ChatGroq, and FastAPI. Orchestrates autonomous blog creation via state-machine graphs—from creative SEO headlines and detailed Markdown writing to intelligent conditional translation routing (Hindi, French).
- Python
- LangGraph
- FastAPI
- Pydantic
- Groq LLaMA 3.3
- LangSmith
- LangChain
Featured AI Architecture
Agentic AI Chatbot & Research Pipeline
An End-to-End stateful agentic AI application built using LangGraph, LangChain, Groq / Gemini LLMs, Tavily Web Search, and Streamlit. Demonstrates modular production architectures across multi-turn memory, autonomous tool calling, and automated news research pipelines.
- Python
- LangGraph
- LangChain
- Groq
- Google Gemini
- Tavily API
- Streamlit
- FAISS
Featured Backend Platform
SimplyCinema
A high-concurrency movie booking & theatre management platform with WebSocket (STOMP protocol) integrated with Redis distributed locking and TTL to eliminate race conditions and double bookings. Engineered with 100+ REST APIs across 4 distinct user roles and centralized exception handling.
- Spring Boot
- PostgreSQL
- Redis
- WebSocket (STOMP)
- Spring Security (RBAC)
- JWT / OAuth2
- AWS EC2
- Razorpay
Featured Microservices System
SimplyBuy — Distributed E-Commerce
Microservices-based e-commerce backend built with Spring Cloud. Features 8 independent services orchestrated through Eureka Discovery, event-driven notification pipelines with Apache Kafka, and fault-tolerant communication with Resilience4j.
- Java
- Spring Boot
- Spring Cloud
- Apache Kafka
- Docker Compose
- Zipkin
- PostgreSQL
- MongoDB
- Resilience4j
Featured Project
Finsight — Finance Backend
A production-grade Spring Boot 3.4.1 backend system for financial data processing. Provides complete CRUD functionality, role-based access control (RBAC), and real-time aggregated dashboard analytics with specialized JPQL aggregations and stateless JWT security.
- Spring Boot 3
- PostgreSQL
- Spring Security + JWT
- Docker
- OpenAPI (Swagger)
The Engine Room
Technological arsenal grouped by engineering domain.
Languages
- Java (17+)
- C++
- Python
- SQL (PostgreSQL, MySQL)
GenAI & Agentic AI
- LangGraph (StateGraph)
- LangChain
- LLMs (Groq, Gemini)
- LangSmith (Tracing & Eval)
- RAG & Vector Search (FAISS)
- Pydantic (JSON Schema Mode)
- MCP (Model Context Protocol)
Backend Frameworks
- Spring Boot (3.x)
- Spring Data JPA & Hibernate
- FastAPI & Uvicorn
- Microservices Architecture
- RESTful API Design
- WebSockets (STOMP Protocol)
- Spring Cloud (Eureka, Gateway)
Databases & Caching
- PostgreSQL (Query Optimization)
- MySQL
- MongoDB
- Redis (Distributed Locking & TTL)
Messaging & Security
- Apache Kafka (Event Pipelines)
- Spring Security
- JWT & OAuth2
- Role-Based Access Control (RBAC)
- Resilience4j Circuit Breakers
Cloud & DevOps
- AWS (EC2, S3, RDS)
- Docker & Docker Compose
- Nginx Reverse Proxy
- GitHub Actions (CI/CD)
- Maven & Git
Testing & Monitoring
- JUnit 5 & Mockito
- Postman & Swagger / OpenAPI
- LangSmith Observability
- Zipkin Distributed Tracing
Training & Certifications
Continuous learning and specialized competencies.
Complete Agentic AI Bootcamp With LangGraph and LangChain
Comprehensive training covering stateful agentic graph design, StateGraph message reducers, dynamic tool routing, multi-actor coordination, and production observability with LangSmith.
Java Programming
In-depth mastery of object-oriented programming, modern Java language features, Collections Framework, concurrency, memory management, and data structures.
Get In Touch
Whether you're looking to discuss backend architectures, scalable microservices, or building agentic AI pipelines with LangGraph — my inbox is always open!