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Subhadeep Ghosh

$ subhadeepghosh.com

I build payment systems that don't lose money.

Four years on Spring Boot microservices in payments and insurance. I build the parts that move money and have to be right, then write about what holds up.

Read the writingAbout meLinkedIn

$ 4+ yrs · Java 17 · Spring Boot · Kafka · AWS

$ focus

What I work on

Backend systems that move money and have to be right. The events that connect them. The AI tools I lean on to build faster.

Backend engineering

Java 17 and Spring Boot services. REST APIs and JPA over Oracle and MySQL, in microservices that carry real payment and insurance traffic.

  • Java 17
  • Spring Boot
  • REST
  • JPA

Kafka and event-driven

Kafka producers and consumers wired into event-driven flows. Ingestion pipelines that keep working when retries and failures happen.

  • Apache Kafka
  • Event-Driven
  • Pipelines

AI-assisted development

Claude, Claude Code, and Copilot in the daily loop. Prompts and review habits that keep the generated code reviewable.

  • Claude Code
  • Copilot
  • Prompts
$ writing

Writing

Practical, honest notes from backend work: Java and Spring Boot, Kafka and event-driven systems, and building software with AI in the loop.

A grid of AI video model tiles labelled Veo, Kling, Runway, Sora and Seedance, each glowing with a different scene type in an aurora of emerald, cyan and violet against a dark background.
Generative AI

Which AI video generator is actually good for what

Which AI video generator is best for what? A hands-on take on Veo, Kling, Runway and Sora, with the honest pick for realism, nature, marketing and more.

5 July 2026 · 15 min
Isometric stack of framework layers rising from Spring Boot 3 to Spring Boot 4, the build, persistence, security and framework layers glowing in an aurora of emerald, cyan and violet against a dark background.
Backend Engineering

Upgrading a production service from Spring Boot 3 to Spring Boot 4

Spring Boot 3 to 4 migration, from a real production upgrade: the BOM cleanup, the code and test breaks, Hibernate 7, and the Spring Cloud Gateway and Netty trap.

27 June 2026 · 21 min
$ off_the_clock

Away from the keyboard

Two games, one habit: read the position, pick a plan, commit.

Valorant

tactical fps

Rounds get planned like deploys. Utility first, entries second, no heroics. A lost clutch teaches the same lesson as a failed rollback, only faster.

Chess

64 squares

Blitz, mostly. Openings are documentation, middlegames are refactors, endgames are edge cases. I blunder into all three.