Varun's Photo

Hello, I am Varun Sharma. I build scalable backend systems and full-stack products with Java and Spring Boot.

About Me

I am a software engineer focused on backend development with Java, Spring Boot, Kafka, Redis, and MongoDB. I work on high-impact systems, resilient APIs, and performance-focused workflows, and I also build full-stack products using React/Next.js. I enjoy solving reliability and scale problems while keeping user experience and product quality strong.

Experience

Quinbay Technologies logo

SOFTWARE DEVELOPMENT ENGINEER

Quinbay Technologies

Bengaluru, Karnataka (On-site)

Mar 2025 - Present

  • Designed and implemented a Kafka-driven MongoDB cleanup pipeline, deleting data for ~95,000 sellers and reclaiming ~120 GB of storage.
  • Optimized high-volume batch deletion workflows, reducing service impact and improving processing efficiency by ~40%.
  • Improved backend reliability by implementing failure handling and retry mechanisms for asynchronous jobs, reducing manual intervention by ~30%.
  • Designed resilient API contracts for complex payment flows (QRIS, Installments), improving error handling and data consistency.
  • Implemented feature flags and persistence logic to enable safer rollouts and A/B testing for registration flows.
Quinbay Technologies logo

SOFTWARE DEVELOPMENT ENGINEER INTERN

Quinbay Technologies

Bengaluru, Karnataka (On-site)

Aug 2024 - Mar 2025

  • Assisted in upgrading 3 microservices to Java 21 and Spring Boot 3, reducing Jenkins CI/CD build times by 65% and improving deployment efficiency by 30%.
  • Resolved 5+ critical issues across APIs and UI, ensuring accurate data flow and enhancing system stability.
  • Delivered 3+ new features and fixed UI inconsistencies using Vue.js 3 to streamline the user experience.
  • Collaborated with 3+ cross-functional teams to standardize code practices and drive root cause analysis for recurring issues.

My Projects

Spring Boot Correlation ID Starter

Open

Published a production-ready Spring Boot starter to Maven Central for end-to-end request tracing with correlation IDs, MDC enrichment, HTTP client propagation, and async context propagation.

  • Java
  • Spring Boot
  • Maven Central
  • WebClient
  • RestTemplate
  • MDC

Viscord

Open

Engineered communication pathways for voice, video, and text communities, reducing API call times by ~20% and increasing user engagement by 10% with Clerk auth, moderation tools, and robust real-time collaboration.

  • Next.js
  • Tailwind CSS
  • ShadCN
  • LiveKit
  • Socket.io
  • Clerk

Ghar

Open

Built a real estate platform with advanced search and responsive UX, improving page load times by 40% and reducing bounce rate by 15% while scaling backend operations with Node.js, Express.js, MongoDB, and Firebase.

  • React
  • Tailwind CSS
  • Node.js
  • Express.js
  • MongoDB
  • Firebase

Skills

Java
Kotlin
HTML/CSS
JavaScript
MySQL
PostgreSQL
Spring Boot
Kafka
Redis
Jetpack Compose
Vue.js
React.js
Node.js
MongoDB
Tailwind CSS
SCSS

Education

Bachelor of Computer Science and Engineering (CGPA: 8.33)

Rajasthan Technical University

Kota, Rajasthan

Nov 2021 - Aug 2025

Senior Secondary Education (Percentage: 92.40%)

The Creative Brain Academy

Rajsamand, Rajasthan

Apr 2019 - Jun 2020

Contact Me

Please contact me directly at sharmavarun.1912@gmail.com or through this form.