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Hi, I'm

Jiss Joy

Committed to building beautiful applications and writing clean, well-tested code focused on performance, scalability, and security.

Me

About Me

Skills
Tech
Javascript
Tech
Typescript
Tech
Ruby
Tech
Python
Tech
Go
Tech
React
Tech
Next.js
Tech
Ruby on Rails
Tech
Flutter
Tech
Django
Tech
NestJS
Tech
GraphQL
Tech
Android
Tech
Figma
Tech
MySQL
Tech
PostgreSQL
Tech
Tailwind CSS
Tech
Docker
Tech
AWS
Tech
Redis
Tech
ClickHouse
Tech
Prisma
Tech
Jest
Tech
Sentry

Experience and Academic qualifications

Full-Stack Engineer

Cybereason

Build and maintain features and components for the core Next.js web portal. Designed and built an interactive Attack Path Graph visualization that processes and renders complex security event data from ClickHouse, PostgreSQL, and Redpanda. Added unit and E2E tests and introduced ESLint configs with CI lint checks, reducing release overhead and production regressions.

  • TypeScript
  • Next.js
  • ClickHouse
  • PostgreSQL
  • Redpanda

Full-Stack Engineer

Canbright Co. Ltd.

Re-engineered core components and optimized full-stack performance across React, GraphQL, and REST architectures, cutting response times by 40% and supporting 56% client growth. Built a custom e-commerce solution tailored to client requirements on Next.js and Ruby on Rails, and led multiple releases through CI/CD pipelines.

  • TypeScript
  • React
  • Next.js
  • Ruby on Rails
  • GraphQL
  • AWS

Android Developer Intern

Smartech Brain Technologies

Designed, built, and deployed 3 Android e-commerce applications, leveraging various Firebase products to enhance functionality and user experience.

  • Java
  • Firebase

Projects

2026
Sector One
A local Assetto Corsa overlay: Go handles UDP ingest, record/replay, and SSE; an embedded Next.js dash paints RPM, tyres, and laps from a ring buffer — nothing leaves the machine.
2026
AegisFlow
A multi-tenant webhook delivery platform: a Go API ingests events, queues them in Redis, and delivers to registered endpoints with HMAC signing and automatic retries, plus a Next.js dashboard to inspect every attempt.
2025
Planning Ninja
A real-time Scrum planning-poker app: teams estimate story points together live over WebSockets, backed by a NestJS API and PostgreSQL behind a Next.js frontend.
2024
便利予約 (Benri Yoyaku)
Developed a queue-based reservation management system to reduce wait times for customers at salons, clinics and restaurants using Next.js and other tools.
2021
Medillah
Designed and built an android application where users can book appointments with doctors and get prescriptions online. Users can also buy over-the-counter drugs and have them delivered to their homes.
2021
Bio-mimicking Spider Robot
Led the development of a bio-mimicking, eight-legged spider robot for rough terrain navigation, focusing on the project's programming and control systems, with integrated surveillance capabilities.
2020
BConnect
An intra-university forum and discussion platform for students to ask and answer questions, and engage in discussions across various categories and topics. Students can chat with each other and share resources

Contact

+81 7012994499

Monday-Friday from 9:00~19:00

jissjoy1@gmail.com

Feel free to drop a mail.

Tokyo, Japan

Let's grab coffee when you are around.