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Hello, My name is

Arun 👋

Software Engineer @ Toshiba 💻

Building distributed solution using Java, Spring Boot & microservices ⚡
Full-stack: MongoDB → REST APIs → React/Vue 🌐
AI/ML enthusiast, AWS certified ☁️
#Build🛠 #Ship🚀 #Learn📖

Contact Me Resume

About Me

Introduction

I'm an Associate Software Engineer at Toshiba, where I build distributed microservices for a production POS platform using Java, Spring Boot, Kafka, and Redis 🖥️. I own features end-to-end — from MongoDB data modeling to REST APIs to React.js/Vue.js interfaces — and enjoy the kind of problem where a schema change quietly saves 20% in storage. I’m also learning Japanese 🇯🇵 — both out of personal interest and to collaborate more effectively with Japan-based teams.

I graduated from Amrita Vishwa Vidyapeetham with a BTech in Computer Science🎓 with CGPA of 8.57, During my studies, I published research on applying AI/ML to solar flare prediction and precision farming, which earned awards including Best Paper at ICSCAN 2024. I'm AWS certified and continue to explore new technologies to grow as a well-rounded engineer.

Outside of work I'm usually at a badminton court, elbow-deep in a small garden bed, or watching a Messi highlight reel I've already seen five times⚽.
If you'd like to chat💬 or grab a coffee☕ or eat some jalebi & fafda 🥨, shoot me a "Waving Hand"👋 emoji on any of my socials.


Arun Kumar Sah
Associate Software Engineer, Toshiba
Bengaluru, Karnataka, India

Skills

What I Work With

Languages

  • Java
  • Python
  • JavaScript
  • C++/C#
  • PHP

Backend & Frameworks

  • Spring Boot
  • REST APIs
  • Node.js
  • Flask
  • Django

Frontend

  • React.js
  • Vue.js
  • Flutter
  • Bootstrap
  • HTML5
  • CSS3

Data & Messaging

  • MongoDB
  • Mysql
  • Postgres
  • Kafka
  • Redis
  • Memcache

Cloud & Tooling

  • AWS
  • Docker
  • Kubernetes
  • Maven
  • Postman / Newman
  • Git

AI / ML

  • Machine Learning
  • Deep Learning
  • Agentic AI & AI Agents
Currently learning: Japanese — JLPT N3 Appeared July, JLPT N2 in Progress

Experience

Where I've Worked

Associate Software Engineer

Toshiba Software (India) Pvt. Ltd. · Bengaluru
Jun 2025 — Present
  • Built Catalog Product and Catalog Group features in a distributed, multi-service POS platform using Java and Spring Boot.
  • Optimized MongoDB data models with hierarchical parent-child relationships, cutting storage by 23% and improving query performance by 35%.
  • Built Vue.js modules for catalog and product management, delivering full-stack functionality from backend APIs to UI.
  • Resolved 20+ security vulnerabilities through Maven dependency upgrades and code remediation, improving application stability and ensuring secure production releases.
  • Validated REST API contracts across microservices using Postman/Newman; maintained Maven dependency trees for consistent multi-service builds.
  • Partnered directly with Japan-based engineering teams in Agile sprints, translating requirements into technical specs.

Software Engineer Intern

Toshiba Software (India) Pvt. Ltd. · Bengaluru
Mar 2025 — May 2025
  • Enhanced a Leave Management System with multi-level approvals, configurable leave types, and notification workflows using Spring Boot and 5 REST APIs.
  • Built a React.js analytics dashboard displaying 3 HR metrics for real-time insight into leave trends, utilization, and approval status.
  • Improved application reliability with JUnit test suites covering backend logic and API behavior.

Education

My Academic Journey



Projects

My Personal Projects

ServicePulse

Centralized microservice health & monitoring Platform.

JavaSpring BootKafkaRedisReact.js

EventCart

Distributed inventory reservation engine to to handle massive traffic spikes.

JavaSpring BootKafkaPostgreSQLVue.js

Engage

Connecting students for hackathons, collaboration & innovation.

JavaScriptNode.jsExpressReact.js

Customer Churn Analysis

Telecom churn prediction & Visualization with ETL, Power BI, and ML.

PythonMLSQL Server

Interests and Hobbies

What I like and want to do 🚀

Problem Solving

Dissecting hard problems and hunting for elegant solutions — the thrill of unknown territory is what keeps me engaged.

Full Stack Dev

Mastering both front-end and back-end, exploring new languages and frameworks, and optimizing systems for real-world demand.

AI / ML

Captivated by the potential hidden in data and the power of extracting insight from it — ML is my vehicle for tackling real problems with data-driven strategies.

System Design

Designing the scalable system with the user's needs first, combining aesthetics with function to build a memorable, seamless experience.

Badminton

My go-to way to reset after a long week — fast, competitive, and a good excuse to see friends.

Gardening

A slow, offline hobby that balances out a day spent staring at a screen.

Cricket

Rarely miss a good match — equal parts strategy and chaos.

Reading

Usually a book away from wherever I am — fiction to unwind, non-fiction to keep learning.

Contact Me

Let's eat some jalebi and fafda 🍩