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Dear Hiring Manager, I am writing to apply for the cross-platform Mobile Developer position. I am excited about the opportunity to work on a project involving 3D mapping, real-time tracking, and web application development. I have 4 years of experience as an iOS Developer and 6 months of experience with React Native. I have worked on building and maintaining mobile applications, integrating APIs, and improving performance and stability in existing codebases. I am also familiar with working across both iOS and Android platforms. I have experience working with real-time data integration and building user-focused features with clean and responsive UI. I enjoy problem-solving and improving existing applications to make them more stable and efficient. I am interested in this role because it involves advanced features like 3D mapping and real-time tracking, as well as working across mobile and web platforms. I am comfortable working with existing codebases and collaborating with teams to deliver project milestones. Thank you for your time and consideration. I would be happy to contribute to your project. Sincerely, Pieter Yonathan…Dear Hiring Manager, I am writing to apply for the cross-platform Mobile Developer position. I am excited about the opportunity to work on a project involving 3D mapping, real-time tracking, and web application development. I have 4 years of experience as an iOS Developer and 6 months of experience with React Native. I have worked on building and maintaining mobile applications, integrating APIs, and improving performance and stability in existing codebases. I am also familiar with working across both iOS and Android platforms. I have experience working with real-time data integration and building user-focused features with clean and responsive UI. I enjoy problem-solving and improving existing applications to make them more stable and efficient. I am interested in this role because it involves advanced features like 3D mapping and real-time tracking, as well as working across mobile and web platforms. I am comfortable working with existing codebases and collaborating with teams to deliver project milestones. Thank you for your time and consideration. I would be happy to contribute to your project. Sincerely, Pieter Yonathan

Pieter Yonathan

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

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Dear Hiring Manager, I am writing to apply for the cross-platform Mobile Developer position. I am excited about the opportunity to work on a project involving 3D mapping, real-time tracking, and web application development. I have 4 years of experience as an iOS Developer and 6 months of experience with React Native. I have worked on building and maintaining mobile applications, integrating APIs, and improving performance and stability in existing codebases. I am also familiar with working across both iOS and Android platforms. I have experience working with real-time data integration and building user-focused features with clean and responsive UI. I enjoy problem-solving and improving existing applications to make them more stable and efficient. I am interested in this role because it involves advanced features like 3D mapping and real-time tracking, as well as working across mobile and web platforms. I am comfortable working with existing codebases and collaborating with teams to deliver project milestones. Thank you for your time and consideration. I would be happy to contribute to your project. Sincerely, Pieter Yonathan…Dear Hiring Manager, I am writing to apply for the cross-platform Mobile Developer position. I am excited about the opportunity to work on a project involving 3D mapping, real-time tracking, and web application development. I have 4 years of experience as an iOS Developer and 6 months of experience with React Native. I have worked on building and maintaining mobile applications, integrating APIs, and improving performance and stability in existing codebases. I am also familiar with working across both iOS and Android platforms. I have experience working with real-time data integration and building user-focused features with clean and responsive UI. I enjoy problem-solving and improving existing applications to make them more stable and efficient. I am interested in this role because it involves advanced features like 3D mapping and real-time tracking, as well as working across mobile and web platforms. I am comfortable working with existing codebases and collaborating with teams to deliver project milestones. Thank you for your time and consideration. I would be happy to contribute to your project. Sincerely, Pieter Yonathan

Available to hire

Brisbane, Australia

Dear Hiring Manager,

I am writing to apply for the cross-platform Mobile Developer position. I am excited about the opportunity to work on a project involving 3D mapping, real-time tracking, and web application development.

I have 4 years of experience as an iOS Developer and 6 months of experience with React Native. I have worked on building and maintaining mobile applications, integrating APIs, and improving performance and stability in existing codebases. I am also familiar with working across both iOS and Android platforms.

I have experience working with real-time data integration and building user-focused features with clean and responsive UI. I enjoy problem-solving and improving existing applications to make them more stable and efficient.

I am interested in this role because it involves advanced features like 3D mapping and real-time tracking, as well as working across mobile and web platforms. I am comfortable working with existing codebases and collaborating with teams to deliver project milestones.

Thank you for your time and consideration. I would be happy to contribute to your project.

Sincerely,
Pieter Yonathan

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

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.

Kitchen All Rounder at Motto Motto Japanese Kitchen

December 1, 2025 - May 1, 2026

Prepared and served Japanese dishes, assisted with food preparation, portioning, and plating during peak service hours; maintained kitchen cleanliness and safety; collaborated with team to ensure fast, high-quality service; handled customer orders and inventory management.

Meat Packer - Casual at Northern Co-operative Meat Company

May 1, 2025 - May 1, 2026

Loaded vacuum-packed meat products, applied labels, ensured quality and hygiene, maintained a clean and safe work environment, and contributed to fast-paced production targets.

React Native Developer at omeeX Pte Ltd

September 1, 2024 - February 1, 2025

Developed and optimized cross-platform mobile apps using React Native, collaborated with UI/UX designers, improved app performance and state management, debugged using React DevTools and Flipper, integrated RESTful APIs, published apps to App Store and Google Play, implemented AsyncStorage and SecureStore for data persistence.

iOS Developer at PB. Suitmedia Kreasi Indonesia

July 1, 2022 - July 1, 2024

Developed and maintained iOS apps using Swift with UIKit and SwiftUI, integrated RESTful APIs, performed unit testing, and collaborated in Agile sprints; contributed to multiple projects such as UP Mood, Zutee, Prevet, OrderIn.

Web Developer - Internship at CV Mostar Indonesia

February 1, 2022 - June 1, 2022

Designed and developed responsive company profiles and e-commerce sites using PHP and WordPress; implemented WooCommerce functionality and collaborated with clients to deliver tailored solutions; built custom themes and plugins.

iOS Developer at Apple Developer Academy

February 1, 2021 - December 1, 2021

Completed intensive iOS development program, built and deployed multiple iOS apps using Swift, UIKit, SwiftUI; practiced code reviews and Agile development; earned Apple Developer Academy Certification.