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I'm a versatile Senior Software Engineer with 7+ years of experience spanning Mobile (Android/Kotlin), Web (Vue.js), and Backend (Java/C#). I've recently transitioned from Java to a C# microservices environment and enjoy architecting solutions from the database up to the native client. I’m a proactive problem solver who thrives in fast-paced teams, adapts quickly to new stacks, and loves turning complex requirements into robust, scalable systems.…I'm a versatile Senior Software Engineer with 7+ years of experience spanning Mobile (Android/Kotlin), Web (Vue.js), and Backend (Java/C#). I've recently transitioned from Java to a C# microservices environment and enjoy architecting solutions from the database up to the native client. I’m a proactive problem solver who thrives in fast-paced teams, adapts quickly to new stacks, and loves turning complex requirements into robust, scalable systems.

user1540240

Full Stack Developer, Back-End Developer, Web Developer, +2

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I'm a versatile Senior Software Engineer with 7+ years of experience spanning Mobile (Android/Kotlin), Web (Vue.js), and Backend (Java/C#). I've recently transitioned from Java to a C# microservices environment and enjoy architecting solutions from the database up to the native client. I’m a proactive problem solver who thrives in fast-paced teams, adapts quickly to new stacks, and loves turning complex requirements into robust, scalable systems.…I'm a versatile Senior Software Engineer with 7+ years of experience spanning Mobile (Android/Kotlin), Web (Vue.js), and Backend (Java/C#). I've recently transitioned from Java to a C# microservices environment and enjoy architecting solutions from the database up to the native client. I’m a proactive problem solver who thrives in fast-paced teams, adapts quickly to new stacks, and loves turning complex requirements into robust, scalable systems.

Available to hire

I’m a versatile Senior Software Engineer with 7+ years of experience spanning Mobile (Android/Kotlin), Web (Vue.js), and Backend (Java/C#). I’ve recently transitioned from Java to a C# microservices environment and enjoy architecting solutions from the database up to the native client.

I’m a proactive problem solver who thrives in fast-paced teams, adapts quickly to new stacks, and loves turning complex requirements into robust, scalable systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

Language

Javanese

Advanced

Work Experience

Senior Backend Software Developer at Touch-Fire Trading

September 1, 2024 - Present

Account Engine Modernization: Sole developer responsible for architecting a new account engine from scratch, replacing a legacy monolith with a modernized C#/.NET Core microservice ecosystem. Designed modular APIs and implemented dependency injection patterns to optimize high-load backend services. Managed complex data migration strategies for live user data, ensuring zero downtime and data consistency using SQL Server.

Software Consultant at Freelance / Self‑employed

July 1, 2022 - November 1, 2025

SG Gov Education System (2022-2025): Led the security overhaul of a massive J2EE legacy system, successfully implementing SAML SSO/SLO and automated SQL batch processing jobs. SG Gov Student Health (2025): Refactored storage architecture from local storage to URL-based state management in a microservice web app (Java/Angular/Redis). BudgetMinds (Android): Built a native finance application from the ground up using Kotlin, adhering to MVVM architecture and utilizing Room persistence for offline capability. Talents.is (Web): Developed a custom, high-performance WordPress theme using Tailwind CSS and PHP. Automation: Engineered Google Apps Script solutions for automated client billing and reminders, integrating directly with Google Sheets.

Junior Associate Software Developer at Azeus Systems

May 1, 2018 - March 1, 2024

Mobile Team (2021-2024): Core maintainer of the 'Convene' Android application. Refactored legacy modules to MVVM, added complex features like RSVP status, and reduced crash rates by ~15%. Web & Backend (2018-2021): Developed key modules for eAGM and PCMS2 using Java Spring Boot and Vue.js. Handled video streaming integrations and secure JWT authentication. DevOps & QA: Built dynamic reporting tools (Oracle/Jira), automated load testing scripts (Gatling/Flood.io), and optimized CI/CD pipelines. Mentorship: Mentored junior developers on Azeus proprietary frameworks and best practices in Java development.