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Hi, I’m Martin Partahi Sitorus, a dedicated and friendly software developer with over a decade of experience focusing on iOS app development. I’ve contributed to a variety of companies and projects, working with Objective-C, Swift, TypeScript, JavaScript, and tools like Git, Jira, Azure, and Xcode. I’m passionate about delivering clean code and great user experiences, and I enjoy helping teams build reliable software. I believe a great app starts with solid architecture and thoughtful UX, and I love optimizing processes and mentoring teammates to speed up delivery while maintaining quality. I’m always curious, collaborative, and eager to tackle challenging problems with pragmatic solutions.…Hi, I’m Martin Partahi Sitorus, a dedicated and friendly software developer with over a decade of experience focusing on iOS app development. I’ve contributed to a variety of companies and projects, working with Objective-C, Swift, TypeScript, JavaScript, and tools like Git, Jira, Azure, and Xcode. I’m passionate about delivering clean code and great user experiences, and I enjoy helping teams build reliable software. I believe a great app starts with solid architecture and thoughtful UX, and I love optimizing processes and mentoring teammates to speed up delivery while maintaining quality. I’m always curious, collaborative, and eager to tackle challenging problems with pragmatic solutions.

Martin Partahi Sitorus

Web Developer, App Developer, Full Stack Developer, +2

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Hi, I’m Martin Partahi Sitorus, a dedicated and friendly software developer with over a decade of experience focusing on iOS app development. I’ve contributed to a variety of companies and projects, working with Objective-C, Swift, TypeScript, JavaScript, and tools like Git, Jira, Azure, and Xcode. I’m passionate about delivering clean code and great user experiences, and I enjoy helping teams build reliable software. I believe a great app starts with solid architecture and thoughtful UX, and I love optimizing processes and mentoring teammates to speed up delivery while maintaining quality. I’m always curious, collaborative, and eager to tackle challenging problems with pragmatic solutions.…Hi, I’m Martin Partahi Sitorus, a dedicated and friendly software developer with over a decade of experience focusing on iOS app development. I’ve contributed to a variety of companies and projects, working with Objective-C, Swift, TypeScript, JavaScript, and tools like Git, Jira, Azure, and Xcode. I’m passionate about delivering clean code and great user experiences, and I enjoy helping teams build reliable software. I believe a great app starts with solid architecture and thoughtful UX, and I love optimizing processes and mentoring teammates to speed up delivery while maintaining quality. I’m always curious, collaborative, and eager to tackle challenging problems with pragmatic solutions.

Available to hire

Hi, I’m Martin Partahi Sitorus, a dedicated and friendly software developer with over a decade of experience focusing on iOS app development. I’ve contributed to a variety of companies and projects, working with Objective-C, Swift, TypeScript, JavaScript, and tools like Git, Jira, Azure, and Xcode. I’m passionate about delivering clean code and great user experiences, and I enjoy helping teams build reliable software.

I believe a great app starts with solid architecture and thoughtful UX, and I love optimizing processes and mentoring teammates to speed up delivery while maintaining quality. I’m always curious, collaborative, and eager to tackle challenging problems with pragmatic solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

DaVinci Resolve Studio

Intermediate

Sketch

Intermediate

Language

English

Fluent

Japanese

Intermediate

Work Experience

Senior Engineer at AIA Singapore

September 1, 2024 - September 9, 2025

Started as an iOS Developer before becoming senior engineer responsible for IPOS apps and the IPOS+ remake. Researched, implemented, and released remote signing during COVID-19; improved e-form implementation from a month to a week; contributed to IPOS, IPOS Brunei, and CITI-IPOS. IPOS+ is built on Quasar and Vue.js; contributed on Swift plugins and PDF generation optimization.

iOS App Developer at SGSM Technologies Pte Ltd

June 1, 2019 - September 9, 2025

Worked on Math Maven app and two templates; delivered both templates in around two weeks; focused on implementing a very responsive and custom UI.

iOS App Developer at Web Imp Pte Ltd

February 1, 2019 - September 9, 2025

Contract to work on the BiggWorld project; built iOS Apps and connected them with Backend API; contributed to web3/cryptocurrency backend integration for eCommerce.

iOS App Developer at Cashlez

September 1, 2018 - September 9, 2025

Added cart and inventory system to transform the app into a full POS with cart and inventory management; delivered the feature within the planned timeline.

Junior iOS Developer at PT Pradipta Jatis Indonesia

December 1, 2017 - September 9, 2025

Worked on Ceploc (marketplace with item purchases and restaurant reservations) and Clara (Digital Fashion Magazine with transactional capabilities within articles).

iOS Developer at PT LinkIT 360

August 1, 2016 - September 9, 2025

Responsible for multiple projects including Mobifone's M-Loyalty (SIM Companion app) with flexible package logic, and Langkah 2.0 loyalty app with precise motion sensing-based step counting and anti-cheating measures.

Senior Engineer at AIA Singapore

September 1, 2024 - September 9, 2025

Led iOS development and revamp for IPOS and IPOS+. Oversaw research, implementation, and release of remote signing during COVID-19. Improved eform deployment speed (from a month to a week) and contributed to IPOS Brunei and CITI-IPOS projects. IPOS+ involved Swift plugin work and Vue.js integration; enhanced PDF generation from ~60s to ~15s and coordinated cross-team development. Also served as primary point of contact for IPOS, CITI-IPOS, and Brunei-IPOS for Singapore development, and managed iOS BAU tasks, resignation workflows, App Store/TestFlight readiness, and support.

iOS App Developer at SGSM Technologies Pte Ltd

June 1, 2019 - September 9, 2025

Worked on Math Maven educational app and created two UI templates with a strong focus on responsive and custom UI design, delivering both templates within two weeks.

iOS App Developer at Web Imp Pte Ltd

February 1, 2019 - September 9, 2025

Contracted to work on BiggWorld, an eCommerce platform using web3 and cryptocurrency. Responsible for building iOS apps and integrating with backend APIs.

iOS App Developer at Cashlez

September 1, 2018 - September 9, 2025

Added cart and inventory features to evolve the app into a full POS system, enabling cart management and inventory control within ~3 months.

Junior iOS Developer at PT Pradipta Jatis Indonesia

December 1, 2017 - September 9, 2025

Contributed to Ceploc (mall tenant purchases and restaurant reservations) and Clara (digital fashion magazine with e-commerce transactions).

iOS Developer at PT LinkIT 360

August 1, 2016 - September 9, 2025

Worked on Mobifone M-Loyalty (SIM companion app) with dynamic package logic and a motion-sensor-based step counter for Langkah 2.0 loyalty program.