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ashim-roy/README.md

Hi there 👋

I'm Ashim Roy, a backend engineer specializing in Java, Spring Boot, distributed systems, and microservices.

I bring 14+ years of software engineering experience building backend platforms across identity, fintech, and enterprise systems. I focus on designing scalable services, event-driven architectures, high-throughput APIs, and resilient distributed systems.

What I work with

Java · Spring Boot · Microservices · Distributed Systems · Kafka · Redis · PostgreSQL · Elasticsearch · AWS · Docker · Kubernetes · REST APIs · OAuth 2.0 · No-Sql · System Design

I'm particularly interested in system design, scalability, performance optimization, observability, event-driven architecture, and backend architecture.

Currently working in the Trust & Identity space, focusing on enterprise API integrations, identity verification workflows, authentication and authorization, API enablement, and distributed backend systems.

Featured Work

🔹 LinkedIn-like Distributed Social Platform
Backend-focused social networking platform built with Spring Boot microservices, Kafka, Redis, Neo4j, Kubernetes/GKE, API Gateway, ELK, and Zipkin.

🔹 Distributed Payment Gateway — Razorpay-like
Designing a production-grade payment platform inspired by Razorpay, focusing on high-throughput payment processing, PCI-compliant card vaulting, Saga-based workflows, reliable webhooks, and fault-tolerant distributed services.

Spring WebFlux · Kafka · Redis · Webhooks · Resilience4J · ELK Stack · Microservices

Let's connect

🌐 Portfolio: https://ashimroy-portfolio.vercel.app
📧 Email: hi.ashimroy@gmail.com

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  1. linkedin-clone-backend linkedin-clone-backend Public

    Scalable LinkedIn-like social media backend built with Java, Spring Boot and Microservices, featuring REST APIs, Spring Security, Kafka-driven feeds and notifications, Redis caching, Neo4j-based so…

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  2. Ecommerce-engine Ecommerce-engine Public

    Production-grade eCommerce backend built with Java, Spring Boot, JPA, Redis, Kafka, OAuth2, Spring Cloud, Docker, Kubernetes and AWS.

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  3. JournalApp JournalApp Public

    Spring Boot Journal Application built using Java, MongoDB Atlas, Spring Data MongoDB, REST APIs, Transaction Management, and CRUD operations. Features user management, journal entry management, DBR…

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  4. distributed-payment-gateway-razorpay distributed-payment-gateway-razorpay Public

    A Razorpay-inspired distributed payment gateway built with Java and Spring Boot, covering orders, payments, refunds, webhooks, card tokenization, settlements, idempotency, Kafka-based event process…

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    Learning Spring AI with Ollama, Google Gemini, RAG, Embeddings, Vector Search, Advisors and Tool Calling.

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