Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Pieter Yonathan, a mobile developer with over 3 years of experience designing, building, and deploying scalable apps for iOS (Swift with UIKit) and cross-platform (React Native). I love turning complex requirements into elegant, user-friendly mobile experiences and taking projects from concept through to release and post-launch support. I’m comfortable collaborating with UI/UX designers and backend teams to ship polished products that perform well across devices. I thrive in collaborative, Agile environments and value maintainable code, thoughtful architecture, and continuous learning. When I’m not coding, I enjoy exploring new technologies, improving app performance, and sharing knowledge with teammates to elevate the whole team’s output.…Hi, I’m Pieter Yonathan, a mobile developer with over 3 years of experience designing, building, and deploying scalable apps for iOS (Swift with UIKit) and cross-platform (React Native). I love turning complex requirements into elegant, user-friendly mobile experiences and taking projects from concept through to release and post-launch support. I’m comfortable collaborating with UI/UX designers and backend teams to ship polished products that perform well across devices. I thrive in collaborative, Agile environments and value maintainable code, thoughtful architecture, and continuous learning. When I’m not coding, I enjoy exploring new technologies, improving app performance, and sharing knowledge with teammates to elevate the whole team’s output.

Pieter Yonathan

App Developer, Developer, Front-End Developer, +3





Hi, I’m Pieter Yonathan, a mobile developer with over 3 years of experience designing, building, and deploying scalable apps for iOS (Swift with UIKit) and cross-platform (React Native). I love turning complex requirements into elegant, user-friendly mobile experiences and taking projects from concept through to release and post-launch support. I’m comfortable collaborating with UI/UX designers and backend teams to ship polished products that perform well across devices. I thrive in collaborative, Agile environments and value maintainable code, thoughtful architecture, and continuous learning. When I’m not coding, I enjoy exploring new technologies, improving app performance, and sharing knowledge with teammates to elevate the whole team’s output.…Hi, I’m Pieter Yonathan, a mobile developer with over 3 years of experience designing, building, and deploying scalable apps for iOS (Swift with UIKit) and cross-platform (React Native). I love turning complex requirements into elegant, user-friendly mobile experiences and taking projects from concept through to release and post-launch support. I’m comfortable collaborating with UI/UX designers and backend teams to ship polished products that perform well across devices. I thrive in collaborative, Agile environments and value maintainable code, thoughtful architecture, and continuous learning. When I’m not coding, I enjoy exploring new technologies, improving app performance, and sharing knowledge with teammates to elevate the whole team’s output.

Available to hire

Hi, I’m Pieter Yonathan, a mobile developer with over 3 years of experience designing, building, and deploying scalable apps for iOS (Swift with UIKit) and cross-platform (React Native). I love turning complex requirements into elegant, user-friendly mobile experiences and taking projects from concept through to release and post-launch support. I’m comfortable collaborating with UI/UX designers and backend teams to ship polished products that perform well across devices.

I thrive in collaborative, Agile environments and value maintainable code, thoughtful architecture, and continuous learning. When I’m not coding, I enjoy exploring new technologies, improving app performance, and sharing knowledge with teammates to elevate the whole team’s output.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Indonesian

Fluent

English

Intermediate

Work Experience

Kitchen All Rounder at Motto Motto Japanese Kitchen, Australia

December 1, 2025 - Present

Prepared and served Japanese dishes in accordance with company standards and food safety regulations. Assisted with food preparation, portioning, and plating during peak service hours. Operated kitchen equipment safely and efficiently. Maintained cleanliness and hygiene of kitchen and dining areas in line with Australian food safety standards. Coordinated with team members to ensure fast and high-quality customer service. Took customer orders and ensured accuracy and timely delivery. Supported stock rotation, inventory checks, and waste minimisation.

Meat Packer at Northern Cooperative Meat Company Ltd

May 1, 2025 - Present

Loaded vacuum-packed meat products into cartons accurately and efficiently. Applied correct labels to cartons according to production requirements. Ensured all packed products met quality and hygiene standards. Maintained a clean and safe working environment in compliance with HACCP regulations. Worked effectively as part of a fast-paced production team to meet daily targets.

React Native Developer at ComeeX Pte Ltd

September 1, 2024 - February 1, 2025

Developed and optimized cross-platform mobile applications using React Native, implementing features from concept to deployment. Collaborated with UI/UX designers to refine app interfaces, ensuring intuitive and engaging user experiences. Optimized app performance and state management for smooth experiences across devices. Used React DevTools and Flipper to debug and resolve issues efficiently. Worked with RESTful APIs to fetch and manage data, ensuring seamless data interaction. Published and maintained apps on the App Store and Google Play, handling certificates, provisioning, and version updates. Implemented offline data persistence using AsyncStorage and SecureStore. Emphasized maintainable code through best practices and code reviews.

iOS Developer at PT Suitmedia Kreasi Indonesia

July 1, 2022 - July 1, 2024

Developed and maintained iOS applications using Swift, implementing features from concept through deployment. Created intuitive and engaging user interfaces with UIKit and SwiftUI, ensuring a seamless experience across devices. Integrated third-party APIs and services to enhance functionality, including RESTful APIs for dynamic data retrieval and interaction. Used version control for collaboration and conducted unit testing and debugging to ensure high-quality apps.

Web Developer - Internship at PT Mostar Indonesia, Cimahi, Indonesia

February 1, 2022 - June 1, 2022

Designed and developed responsive company profiles, landing pages, and e-commerce sites using WordPress. Implemented WooCommerce to support product management, payments, and order tracking. Collaborated with clients to understand requirements and deliver tailored solutions. Created custom WordPress themes and plugins to meet client needs and improve website functionality.

iOS Developer at Apple Developer Academy, Tangerang, Indonesia

February 1, 2021 - December 1, 2021

Completed an intensive program focused on iOS development using Swift, UIKit, Core ML, Firebase, and Core Data. Developed and deployed multiple iOS apps and contributed to team projects with code reviews in an Agile environment. Gained industry insights through workshops and mentorship. Awarded the Apple Developer Academy Certificate.