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

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

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

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Experience Level

Expert
Expert
Intermediate
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.

Education

Bachelor's Degree in Informatics/Computer Science at Bina Nusantara University
August 1, 2018 - May 1, 2022
Bachelor Degree in Informatics/Computer Science at Binus University Bandung, Indonesia
January 11, 2030 - May 1, 2022

Qualifications

Apple Developer Certification
February 1, 2021 - December 1, 2021
iOS Development Bootcamp (Swift, UIKit, Core ML, Firebase, Core Data)
January 11, 2030 - April 24, 2026
Apple Developer Certification
February 1, 2021 - December 1, 2021
iOS App Development Bootcamp
January 11, 2030 - May 19, 2026

Industry Experience

Software & Internet, Media & Entertainment, Professional Services, Computers & Electronics