Hi,

I'm Rupin
Vijan

SOFTWARE ENGINEER

WELCME TO

THE FUTURE

About Me


I'm a Software Engineer focused on backend and distributed systems. At Belzabar I architect reactive, event-driven platforms in Java and Spring Boot on AWS — fault-tolerant payment pipelines, hybrid search on Elasticsearch, and microservices that process millions of real-time events. I love the hard parts: tuning JVM memory, query plans, and caching so systems stay fast and correct under load, and building native tooling that quietly makes everything cheaper and quicker.


Be an innovator.


Skills

Java
Spring Boot
Apache Kafka
Amazon Web Services
Kubernetes
PostgreSQL
Elasticsearch
Docker
Node.js

Experience

Software Engineer

Belzabar Aug 2023 — Present · Delhi, India
  • Architected a reactive, event-driven hybrid search platform (Java, Spring Boot, Elasticsearch) for a 360° customer view — cut query latency 30% through JVM and connection-pool tuning.
  • Engineered a fault-tolerant payment system handling $500K+ monthly with AWS SQS and Lambda and event-driven messaging, guaranteeing exactly-once processing.
  • Optimized PostgreSQL with execution-plan analysis and composite indexing — 40% lower CPU at peak — shipping on AWS ECS with Docker/Kubernetes CI/CD.

Fellow — Maker Expert

Nasscom Foundation Nov 2022 — Jul 2023 · Noida, India
  • Consulted 50+ startups on scalable backend architecture, NoSQL vs relational schema design, and AWS / GCP cloud migration.
  • Refactored legacy codebases into microservice and MVC architectures, speeding up MVP launches.

Software Developer Intern

PlyPicker Sep 2022 — Nov 2022 · Pune, India
  • Built responsive RESTful APIs (Node.js, MongoDB) with aggregation pipelines for complex filtering and reporting.
  • Secured sensitive customer data with JWT authentication and role-based access control (RBAC).

Projects

Some of the things I've built

01

Shram AI

A cross-platform productivity tool that helps teams manage work and stay in flow. I engineered its native macOS module in Swift on the Accessibility API to read on-screen context — replacing third-party OCR, cutting data costs 60% and latency 200ms. Top 2 Product on Product Hunt.

02

Satyug

An interactive mini-game platform connecting a billion users to their roots and culture through religious storytelling and metaverse darshans — powered by a low-latency, event-driven game server tuned for real-time user state and high read/write throughput.

03

Digital Ram Mandir

A viral devotional web platform officially promoted by the Government during the UP & Bihar election campaigns. I architected a resilient, horizontally-scalable content delivery system to absorb massive concurrent traffic spikes during live events.

🛕 Digital Ram Mandir

Let's get in touch.