Available for opportunities

Vishal R

Backend Developer | Java | Spring Boot | Automation

I build and debug production backend systems at scale, and automate complex workflows with Python.

Built open-source tools used by 120K+ users, followed by 400+ developers on GitHub.

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What I Do

I don't just list technologies; here's what I actually build and maintain.

Backend API Development

Design and build production-grade REST APIs using Java and Spring Boot, spanning from schema design to deployment.

Legacy System Maintenance

Maintain and improve a 13-year-old retail order processing system serving 500+ IKEA stores globally.

Incident Management & Debugging

Diagnosed and resolved 50+ distinct production data issues across order, payment, and delivery systems using SQL.

Python Automation

Build automation tools and bots that run at scale, including a Telegram bot ecosystem serving 120,000+ users.

Projects

Real things I've built, with context on why they matter.

Telegram Bot Ecosystem

120K+ UsersOpen Source

Problem

Users needed a reliable way to extract, convert, and manage encrypted and multi-part archive files directly within Telegram.

What I Built

Built and operated an open-source Telegram bot ecosystem used by 120,000+ users over 5 years. The flagship Unzip Bot handles encrypted and multi-part archives using a custom 7z engine.

Key Highlights

  • 7,000+ monthly active users
  • Open-source project with 150+ GitHub stars
  • Uses async task queues and multi-client architecture to handle concurrent workloads under Telegram rate limits
  • Reduced Telegram floodwait errors by ~60% with multi-client architecture
  • Solo-managed full infrastructure and 5-year SDLC under limited compute
PythonAsync I/ODistributed SystemsTelegram API
View Source

Git Meta Analyser

Internal Tool

Problem

Auditing multiple Git repositories for security vulnerabilities, dependency health, and code quality was manual and time-consuming.

What I Built

Developed a CLI tool to analyse public, private, and enterprise Git repos at scale via GitHub API. Aggregates language stats, dependency trees, SBOM data, and Dependabot security alerts into reusable JSON and Markdown reports.

Key Highlights

  • Reduced manual repository audit time by ~70%
  • Integrated LLM-based analysis for structured security and compliance reports
  • Automates analysis across multiple repos in a single run
PythonFlaskGitHub APIGenAI / LLM Integration

Ganesh Finance (Microservices)

Team Project

Problem

Needed a modular, secure financial services platform with independent services for registration, authentication, and loan workflows.

What I Built

Designed a microservice architecture across 5 services. Led technical decisions in a team of 5, owned DB schema design and inter-service communication.

Key Highlights

  • Token-based REST APIs reducing authentication failures by 20%
  • Eureka service discovery for dynamic service registration
  • Full Swagger documentation for all endpoints
JavaSpring BootSpring SecurityJWTEurekaSwagger

Experience

Where I've worked and what I actually did.

Capgemini

August 2024 - Present

Software Engineer

Bengaluru, India

  • Maintain and improve a production Spring Boot system powering retail order processing across 500+ IKEA stores globally.
  • Resolved 50+ production data issues across order, payment, and delivery systems, including critical bugs affecting 10,000+ orders.
  • Implemented targeted fixes in backend services to improve system reliability and reduce recurring incidents.
  • Own daily batch pipeline monitoring and recovery across critical order lifecycle processes.

Skills & Certifications

Grouped by domain, not a random keyword dump.

Backend

JavaSpring BootSpring SecurityHibernateREST APIsJWTMicroservices

Databases

Oracle DBPostgreSQLMongoDBSQL Query Optimisation

Automation

PythonAsync I/OScriptingTelegram Bot API

Cloud & DevOps

Azure (AI-102 Certified)GCPAWSDockerCI/CD

Frontend

ReactJavaScriptHTMLCSS

Tools

GitSplunkPostmanSwaggerDocker

Certifications

  • Azure AI Engineer Associate (AI-102)

    Microsoft · 2026

  • Google Cloud Generative AI Leader

    Google Cloud · 2026

  • Azure AI Fundamentals (AI-900)

    Microsoft · 2023

Education

B.Tech in Computer Engineering

Presidency University, Bangalore · 2024

Security & Curiosity

I test applications for common vulnerabilities like SQL injection, XSS, and authentication flaws to understand how systems break, helping me build more resilient systems.

Get In Touch

Open to backend engineering roles, interesting projects, or just a good technical conversation.

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