Rumon Mahmudul Hasan

Full Stack Engineer @ WOTA

About

Experienced Full Stack Engineer specializing in React JS and Angular JS, with a focus on delivering seamless user experiences. I have a deep understanding of front-end technologies and frameworks, enabling me to build scalable and performant applications. Currently developing comprehensive AWS cloud solutions, implementing services including Greengrass for IoT data collection, Lambda for serverless computing, EC2 for infrastructure, Athena for analytics, S3 Tables for storage, Kinesis for real-time streaming, Firehose for data pipelines, and SES for email automation. Working with Node.js and TypeScript for robust backend development. As a dedicated learner, I stay up to date with the latest industry trends and best practices.

Country

Japan

City

Tokyo

Industry

Information Technology & Services

Skill

AWS Lambda, Leadership, Web Development, Web Application Development, FastAPI, Spring Boot, Node.js, TypeScript, Next JS, Amazon Dynamodb, Amazon Web Services (AWS), Appwrite, Shadcn, Hono, Tailwind, NextJs, Angular Js, Redux.js, GraphQL, HTML

Experience

Full Stack Engineer

WOTA

2025-6 - Present · 1 yr 4 mos

Tokyo, Japan

Developing comprehensive full-stack solutions with focus on cloud infrastructure and scalability. Key implementations include: • AWS Lambda for serverless computing and microservices architecture • EC2 instances for scalable compute infrastructure • SES integration for automated email services that sends emailed data from IOT devices directly to S3 buckets. • S3 Tables for efficient data storage and retrieval • Kinesis for real-time data streaming and processing • Firehose for automated data delivery pipelines • Athena for server-less analytics and querying • AWS Greengrass for IOT device data collection and edge computing. • Full-stack development using Node.js, TypeScript, and modern frameworks

Mid-level Frontend Developer

Rakuten

2024-6 - 2025-5 · 1 yr

Tokyo, Japan

Progressed to mid-level engineer with expertise across full-stack development, utilising Python FastAPI for high-performance API development, Angular for dynamic front-end applications, and Spring Boot for enterprise-grade backend services. Architected and implemented comprehensive UI components while building scalable backend infrastructure, ensuring seamless integration between front-end interfaces and robust server-side solutions.

Junior Frontend Developer

Rakuten

2022-10 - 2024-6 · 1 yr 9 mos

Tokyo, Japan

Building comprehensive front-end UI components for both internal tools and company products. Designed modular, reusable components using frameworks like Angular, Next and React JS that streamlined development workflows and maintained design system consistency. Optimised component performance and accessibility while ensuring cross-browser compatibility and responsive design principles across diverse user interfaces.

Frontend Developer

VALYOU

2022-1 - 2022-8 · 8 mos

Responsible for building the company website as a showcase platform for products targeting both clients and customers.

Frontend Web Developer

2021-9 - 2021-12 · 4 mos

Tokyo, Japan

Worked as a freelance web developer, specializing in the creation of comprehensive websites for small businesses and educational institutions located in Tokyo, Japan.