About

A journey of learning and building.

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Hey, I'm Manoj.

Senior Java / Spring Boot Developer with 4+ years of experience — taking full ownership from planning and architecture to building and deploying production-ready applications, across both monolithic and microservices architectures.

I started coding in 2018, learning by building projects from scratch. After a period of freelancing, I began my professional career in 2022 at Hocalwire (now Rally Infra), where I was promoted to Lead Java Developer for consistent delivery and technical ownership.

Over the years my role grew from individual contributor to owning the entire development lifecycle — requirements analysis, system architecture, database schema design, development, code reviews, CI/CD, server deployment, and production support. I've led backend teams, mentored developers, conducted code reviews, and participated in hiring interviews.

What I've worked on

I've worked across the full spectrum of web application types — from legacy JSP/Servlet systems to layered monolithic Spring Boot applications to event-driven microservices. Here is some of my work projects:

  • Zazbaat— Multilingual social & content platform built with microservices (Spring Boot 4, Spring Cloud, Kafka, PostgreSQL, Spring AI with Google Gemini). Implemented Saga pattern for distributed transactions, strategy pattern for user discovery, and PEM-based JWT auth at the API Gateway.
  • Shopperce — Multi-seller e-commerce platform covering product, order, user, and inventory domains. Integrated Razorpay payments, Delhivery and Shiprocket logistics, Redis caching, and high-concurrency order processing using ExecutorService. Led a 4-member backend team.
  • Core CMS — AI-powered content management system. Started on Servlets/JSP, evolved over time. Integrated OpenAI APIs for story generation, quiz creation, and news summarization. Deployed on a Linux server with Jetty.

Skills & tools

Languages & Frameworks

Java 8 / 17 / 21 · Spring Boot · Spring Security · Spring Cloud · Hibernate / JPA · Servlets / JSP

Architecture & Patterns

Microservices · Layered Monolithic / MVC · OOP · SOLID · Design Patterns · Saga Pattern · Event-Driven (Kafka)

Databases & Caching

MySQL · PostgreSQL · Redis

Security & Auth

JWT · OAuth 2.0 (Google / Facebook) · RBAC · CSRF / XSS prevention

Infrastructure & Tools

Docker · Linux · Git · Swagger / OpenAPI · SLF4J / Logback

Integrations

Razorpay · Delhivery · Shiprocket · OpenAI · Google Gemini (Spring AI)

Currently

This journey is continuous. Right now I'm deepening my core Java and Spring Boot fundamentals through focused study and hands-on projects — going deeper into OOP design, Stream API, Concurrency, and Spring Transactions — while actively building out microservices experience with Spring Boot and Spring Cloud.

What I share here

This space is more than a portfolio. It's a window into how I think and grow.

You'll find projects I've built, blogs where I break down concepts, patterns, and lessons I've picked up, and progress updates posted like a feed.

If something here helps you, teaches you something, or sparks a thought — that's exactly why I put it out there. If you have feedback, suggestions, or just want to discuss an idea — I'm genuinely happy to connect. And if you need someone to build with, think with, or just talk through a problem — I'm here.

Want to reach out?

If you have an idea, feedback, or just want to talk through a problem, feel free to send a message.