ABOUT
Software engineer with 7+ years of experience building scalable digital solutions from Tokyo
Hello! I'm ZI SAR KAY NAR (ジサーケィナー), a software engineer currently based in Tokyo, Japan. With over 7 years of experience in full-stack development, I specialize in architecting API services, web, and mobile applications using Java (Spring Boot), Python (Django), JavaScript/TypeScript (React, React Native), and AWS Cloud infrastructure.
Since relocating to Japan in April 2022, I've successfully delivered diverse projects ranging from educational mobile platforms to IoT-enabled smart systems. At ICT Star Group Myanmar Co., Ltd., I've worked on everything from Japanese learning mobile apps with OAuth2 security to smart meter systems leveraging AWS Lambda and ThingsBoard.
I hold a TOEIC score of 825 (2024) and passed JLPT N3, continuously expanding my ability to bridge cultures through technology. My approach combines technical excellence with a deep understanding of user needs, whether architecting end-to-end systems in Figma, implementing cross-platform IAP functionality, or optimizing CI/CD pipelines with GitHub Actions.
SKILLS
WORK EXPERIENCE
OneJPN Japanese Learning Mobile App
JAN 2024 - DEC 2025Architected end-to-end system design including user flows in Figma, RESTful API architecture, and PostgreSQL database schemas. Developed mobile app using React Native and Redux, implemented IAM using Keycloak and OAuth2, integrated cross-platform In-App Purchase functionality. Developed backend APIs with Python (Django) and PostgreSQL with Redis for caching.
Smart Meter Reading System
AUG 2025 - OCT 2025Migration by converting ThingsBoard's built-in rule chain functions into AWS Lambda functions using Python. Ensured code reliability by writing comprehensive unit tests for Lambda functions using PyTest.
Smartphone Location Information Management System
OCT 2021 - DEC 2023Designed UI/UX and system architecture including RESTful APIs and database schemas. Developed cross-platform mobile app (Android/iOS) using Flutter to track BLE devices via GPS data. Developed robust backend services and admin panels using Java, Spring Boot, and MySQL. Automated CI/CD pipelines using GitHub Actions for seamless deployment to Sakura Cloud.
PC Rental Management System
JUN 2021 - SEP 2021Integrated Active Directory authentication into an offshore PC rental management system using Java, Spring Boot, and Spring Security. Automated communication workflows by implementing bulk email systems with dynamic templates using Spring Scheduling.
Fiber Pre/Post-Sale Management System
MAR 2021 - JUN 2021Engineered interactive mapping features allowing users to hand-draw fiber routes directly within the mobile application. Optimized data visibility by enabling location-tagged image uploads for real-time admin monitoring of fiber infrastructure.
iSGM Human Resources Management System
AUG 2020 - FEB 2021Designed mobile app UI/UX using Figma and developed cross-platform apps using Flutter and released them to stores. Developed full-stack features including Java (Spring Boot) backend services and Angular-based admin dashboard. Managed containerized deployments and code quality using Docker, Docker Compose, and GitLab CI/CD.
Fish Farming with IoT and AI
AUG 2019 - AUG 2020Developed centralized admin dashboard using Java and Spring Boot to visualize real-time data. Implemented multi-video upload with total size up to 20 GBs without data loss to S3 buckets for AI service. Configured cloud monitoring by integrating AWS EC2 with CloudWatch to track system health and performance metrics.
Real Estate Project
JAN 2019 - JUL 2019Created system design documents and designed web app UI/UX using Figma. Integrated enterprise data by fetching information from Odoo admin backend using gRPC protocols. Executed multi-platform launch by developing Spring Boot web app and converting it into Flutter mobile applications for iOS/Android stores.
EDUCATION
Diploma in Software Engineering
MAY - OCT 2018Intensive software engineering program focused on modern development practices and methodologies.
Bachelor of Electronic and Communication Engineering
SEP 2011 - FEB 2017Focused on electronic systems, communication technologies, programming, and fundamental engineering principles.
Certifications & Language
LET'S WORK
TOGETHER
Interested in collaborating on a project? Let's create something amazing.