Available to hire
I am an experienced iOS developer with 10+ years of building scalable, high-performance mobile apps using Swift and Objective-C, and architectural patterns like MVVM and MVC. I have hands-on experience with SwiftUI, Combine, Core Data, and CI/CD integration, delivering clean, maintainable code and accessible, user-centric design.
I have a strong track record optimizing performance, mentoring teams, and delivering production-ready iOS solutions across fintech, e-commerce, and health-tech domains. I excel in automated testing (XCTest, XCUI), building design systems, and collaborating with product and marketing to tailor experiences to user needs and business goals.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Javanese
Intermediate
Work Experience
SDE-III at Walmart
February 1, 2023 - PresentOverhauled promotion delivery for Cashi App by migrating from Firebase to a CMS-driven architecture (cxtool/Tempo), implemented dynamic, prioritized, and categorized promotions for improved discoverability. Led image optimization via Torbit/Pronto CDN achieving 80% faster image load times; implemented Card on File (COF) payments; authored LLD documents with Coordinator pattern; launched Bill Payment Reminders and Quick Bill Payment; led a team of 4 iOS engineers; improved startup time by 60%; maintained ~85% unit test coverage; contributed to SwiftUI-based design system and modularized Living Design into an XCFramework.
Sr. Technical Consultant at Xebia / Backbase
February 1, 2023 - October 10, 2025Developed a global digital card journey module used by ~10M users; led technical roadmapping and architectural discussions; achieved ~90% unit test coverage; recognized as Gem of the Month for contributions and cross-team collaboration.
Senior iOS Engineer at Airveda
June 1, 2021 - October 10, 2025Developed health-focused features (asthma symptom tracking, medication reminders) and migrated ~70% of legacy Objective-C codebase to Swift; increased unit test coverage to ~85%.
Senior iOS Engineer at Poplify
September 1, 2019 - October 10, 2025Led end-to-end design and development of the HowNow iOS app using MVVM and modular architecture; integrated Core Data for persistence and OpenTok for real-time video calling; mentored 3 junior developers; achieved ~80% test coverage.
iOS Engineer at Cacao Solutions
October 1, 2016 - October 10, 2025Resolved high-priority production issues in legacy Objective-C codebase; improved stability and ensured timely feature delivery.
SDE-III at Walmart
February 1, 2023 - PresentLed a critical overhaul of Cashi App promotions by migrating from Firebase to CMS-driven architecture (cxtool/Tempo), enabling dynamic, categorized promotions and improved discoverability. Enhanced in-app promotion variety and real estate to support TPV growth and ad revenue. Optimized images via Torbit and Pronto CDN, achieving ~80% faster loads. Implemented Card on File (COF) payments for 1M+ users using MVVM and Strategy patterns. Authored Low-Level Design documents and coordinated navigation patterns. Launched Bill Payment Reminders and Quick Bill Payment features. Led 4 iOS engineers; improved startup time by 60% and maintained ~85% unit test coverage. Contributed to SwiftUI-based Design System and modular XCFrameworks.
Sr. Technical Consultant at Xebia / Backbase
February 1, 2023 - October 10, 2025Built a global digital card journey for ~10M users; led technical roadmap and architecture discussions; achieved ~90% unit test coverage; recognized as Gem of the Month (Mar 2022).
Senior iOS Engineer at Airveda
June 1, 2021 - October 10, 2025Developed health-focused features such as asthma symptom tracking and medication reminders; migrated ~70% of legacy Objective-C code to Swift; increased unit test coverage to ~85%.
Senior iOS Engineer at Poplify
September 1, 2019 - October 10, 2025Led end-to-end design and development of HowNow iOS app from scratch using MVVM and modular code; integrated Core Data for persistence and OpenTok for real-time video calling; mentored 3 junior developers; ~80% test coverage.
iOS Engineer at Cacao Solutions
October 1, 2016 - October 10, 2025Resolved high-priority production issues in legacy Objective-C codebase, improving app stability and ensuring timely feature delivery.
SDE-III at Walmart
February 1, 2023 - PresentLed a business-critical overhaul of promotion delivery for the Cashi app by migrating from Firebase to a CMS-driven architecture (cxtool/Tempo), enabling categorized, prioritized promotions and improved discoverability. Implemented real-time promotional variety and expanded in-app real estate for brand offers to drive Total Payment Value (TPV) and ad-driven revenue. Optimized image loading with Torbit and Pronto CDN, achieving 80% faster load times. Developed and launched Bill Payment Reminders and Quick Bill Payment features. Implemented Card on File (COF) payments for 1M+ users using MVVM and the Strategy pattern, enhancing security and payment UX. Authored Low-Level Design documents with class/flow diagrams integrated with the Coordinator pattern. Led a team of 4 iOS engineers, conducted code reviews, sprint planning, and mentoring; maintained ~85% unit test coverage. Contributed to the Coin Design System using SwiftUI and modularized Living Design as an XCFramework for cross-platfo
Sr. Technical Consultant at Xebia / Backbase
February 1, 2023 - October 10, 2025Led development of a global digital card journey module used by ~10M users, enabling seamless virtual card issuance and management within mobile banking apps. Directed technical roadmap and architecture in collaboration with cross-functional teams, resulting in robust, scalable solutions. Achieved ~90% unit test coverage across key modules and promoted high code quality. Recognized as Gem of the Month for outstanding technical contributions and collaboration.
Senior iOS Engineer at Airveda
June 1, 2021 - October 10, 2025Developed health-focused features such as asthma symptom tracking and medication reminders to improve user engagement and adherence. Refactored approximately 70% of legacy Objective-C code to Swift, improving readability, maintainability, and performance. Increased unit test coverage to ~85%, reducing regressions during development.
Senior iOS Engineer at Poplify
September 1, 2019 - October 10, 2025Led end-to-end design and development of the HowNow iOS app from scratch using MVVM and a modular architecture, enabling scalable feature development. Integrated Core Data for persistent local storage and OpenTok for real-time video calling. Mentored three junior developers and achieved ~80% test coverage.
iOS Engineer at Cacao Solutions
October 1, 2016 - October 10, 2025Resolved high-priority production issues in a legacy Objective-C codebase, improving app stability and ensuring timely feature delivery. Recognized for reliable, on-time delivery.
SDE-III (iOS) at Walmart
February 1, 2023 - PresentLed a business-critical overhaul of promotion delivery for Cashi App by migrating from Firebase to CMS-driven architecture (cxtool/Tempo), addressing key user pain points such as uncategorized offers, and implementing dynamic, prioritized, and categorized promotions for seamless discovery. Engineered real-time promotional variety and increased in-app real estate for brand offers to drive Total Payment Volume (TPV), engagement, and ad-driven revenue. Implemented Card on File (COF) payments feature for Cashi (1M+ users) using MVVM and Strategy Pattern. Designed detailed Low-Level Design (LLD) documents with class/flow diagrams integrated with the Coordinator pattern. Led a team of 4 iOS engineers, improved startup performance by 60% via GCD-based asynchronous loading, and maintained ~85% unit test coverage.
Sr. Technical Consultant at Xebia / Backbase
February 1, 2023 - October 10, 2025Developed a global digital card journey module used by ~10M users, enabling seamless virtual card issuance and management within mobile banking apps. Led technical roadmap planning and architectural discussions, aligning development with business goals and cross-functional teams. Achieved ~90% unit test coverage and was recognized as 'Gem of the Month' for outstanding technical contributions.
Senior iOS Engineer at Airveda
June 1, 2021 - October 10, 2025Developed health-focused features such as asthma symptom tracking and medication reminders, enhancing user engagement. Refactored and migrated approximately 70% of the legacy Objective-C codebase to Swift, improving readability and performance. Increased unit test coverage to ~85%, improving reliability.
Senior iOS Engineer at Poplify
September 1, 2019 - October 10, 2025Led the end-to-end design and development of the HowNow iOS app from scratch using MVVM and a modular code structure. Integrated Core Data for local storage and OpenTok for real-time video calling. Mentored 3 junior developers; implemented ~80% test coverage.
iOS Engineer at Cacao Solutions
October 1, 2016 - October 10, 2025Resolved high-priority production issues in a legacy Objective-C codebase, improving app stability and ensuring timely feature delivery.
SDE-III at Walmart (Cashi App)
February 1, 2023 - PresentLed a business-critical overhaul of promotion delivery by migrating from Firebase to CMS-driven architecture, implementing dynamic, prioritized, and categorized promotions for better discoverability. Enhanced in-app real estate for brand offers, supporting business goals to drive TPV and engagement. Optimized images with Torbit/Pronto CDN achieving 80% faster load times. Implemented Card on File (COF) payment feature using MVVM and Strategy patterns, enabling secure card storage. Prepared detailed Low-Level Design documents incorporating Coordinator pattern. Launched Bill Payment Reminders and Quick Bill Payment features, and led a team of 4 iOS engineers with ~85% unit test coverage. Contributed to the Coin Design System using SwiftUI and modularized Living Design as an XCFramework.
Sr. Technical Consultant at Xebia / Backbase
February 28, 2023 - October 10, 2025Developed a global digital card journey module used by ~10M users, enabling seamless virtual card issuance and management within mobile banking apps. Led technical roadmap planning and architectural discussions, aligning efforts with business goals. Achieved ~90% unit test coverage across key modules and received recognition as 'Gem of the Month' for outstanding contributions and cross-team collaboration.
Senior iOS Engineer at Airveda
June 1, 2021 - October 10, 2025Developed health-focused features such as asthma symptom tracking and medication reminders. Refactored and migrated approximately 70% of the legacy Objective-C codebase to Swift, improving readability, maintainability, and performance. Increased unit test coverage to ~85%, reducing regression issues during development.
Senior iOS Engineer at Poplify
September 1, 2019 - October 10, 2025Led end-to-end design and development of the HowNow iOS app from scratch using MVVM and a modular code structure, enabling scalable feature development. Integrated Core Data for persistent local storage and OpenTok for real-time video calling. Mentored 3 junior developers and achieved ~80% test coverage.
iOS Engineer at Cacao Solutions
October 31, 2016 - October 10, 2025Resolved high-priority production issues in a legacy Objective-C codebase, improving app stability and ensuring timely feature delivery.
SDE-III at Walmart
February 1, 2023 - PresentLed a business-critical overhaul of promotion delivery for Cashi App by migrating from Firebase to a CMS-driven architecture (cxtool/Tempo), enabling dynamic, prioritized, and categorized promotions for better discoverability. Implemented real-time promotional variety and expanded in-app real estate for brand offers to drive Total Payment Volume (TPV) and ad-driven revenue. Achieved ~80% faster image load times through Torbit and Pronto CDN optimization. Designed and implemented Card on File (COF) payments for the Cashi app (1M+ users) using MVVM and Strategy patterns, enhancing security and user experience. Authored detailed Low-Level Design documents with class/flow diagrams integrated with the Coordinator pattern. Delivered Bill Payment Reminders and Quick Bill Payment features, increasing app utility and engagement. Led a team of 4 iOS engineers, conducted code reviews, and mentored peers; recognized as Employee of the Quarter. Optimized startup time by 60% via GCD-based asynchrono
Sr. Technical Consultant at Xebia / Backbase
February 28, 2023 - October 10, 2025Developed a global digital card journey module used by ~10M users for virtual card issuance and management within mobile banking apps. Led technical roadmap planning and architectural discussions, aligning development with business goals and coordinating with cross-functional teams. Achieved ~90% unit test coverage across key modules, improving code quality and reducing defects. Recognized as 'Gem of the Month' (Mar 2022) for outstanding technical contributions and cross-team collaboration.
Senior iOS Engineer at Airveda
June 30, 2021 - October 10, 2025Developed health-focused features such as asthma symptom tracking and medication reminders to boost user engagement and treatment adherence. Refactored and migrated approximately 70% of the legacy Objective-C codebase to Swift, improving readability, maintainability, and performance. Increased unit test coverage to ~85%, enhancing reliability and reducing regressions during development.
Senior iOS Engineer at Poplify
September 30, 2019 - October 10, 2025Led end-to-end design and development of the HowNow iOS app from scratch using MVVM and a modular code structure for scalability. Integrated Core Data for persistent local storage and OpenTok SDK to enable real-time video calling. Mentored 3 junior developers and achieved ~80% test coverage.
iOS Engineer at Cacao Solutions
October 31, 2016 - October 10, 2025Resolved high-priority production issues in a legacy Objective-C codebase, improving stability and ensuring timely feature delivery. Recognized for consistent and reliable delivery.
SDE-III at Walmart
February 1, 2023 - PresentLed a business-critical overhaul of promotion delivery for Cashi App by migrating from Firebase to CMS-driven architecture (cxtool/Tempo), enabling dynamic, prioritized, and categorized offers for improved discoverability. Implemented real-time promotional variety and expanded in-app real estate for brand offers to drive TPV and ad revenue. Optimized images via Torbit and Pronto CDN, reducing load times by 80%. Implemented Card on File (COF) payments with MVVM and Strategy Pattern, enhancing secure card storage and payment experience. Authored detailed low-level design (LLD) docs with Coordinator-based navigation. Launched Bill Payment Reminders and Quick Bill Payment features. Led a team of 4 iOS engineers, improved startup time by 60% through GCD-based asynchronous loading, and maintained ~85% unit test coverage.
Sr. Technical Consultant at Xebia / Backbase
February 1, 2023 - October 10, 2025Developed a global digital card journey module used by ~10M users; led technical roadmap planning; achieved ~90% unit test coverage; recognized as 'Gem of the Month' for cross-team contributions.
Senior iOS Engineer at Airveda
June 1, 2021 - October 10, 2025Developed health-focused features such as asthma symptom tracking and medication reminders; migrated ~70% of legacy Objective-C code to Swift, improving readability, maintainability, and performance; increased unit test coverage to ~85%.
Senior iOS Engineer at Poplify
September 1, 2019 - October 10, 2025Led end-to-end design and development of HowNow iOS app using MVVM and modular code; integrated Core Data for persistence and OpenTok for real-time video; mentored 3 junior developers; achieved ~80% test coverage.
iOS Engineer at Cacao Solutions
October 1, 2016 - October 10, 2025Resolved high-priority production issues in legacy Objective-C codebase; improved app stability and timely feature delivery; recognized for consistent delivery.
Education
B.Tech in Computer Science at College of Technology, G.B.P.U.A & T, Uttarakhand
January 11, 2030 - January 1, 2015Intermediate at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2010High School at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2008B.Tech in Computer Science at College of Technology, G.B.P.U.A & T, Uttarakhand
January 1, 2010 - January 1, 2015Intermediate at Holy Cross School, Laksar, Uttarakhand
January 1, 2008 - January 1, 2010High School at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2008B.Tech in Computer Science at College of Technology, G.B.P.U.A & T, Uttarakhand
January 11, 2030 - January 1, 2015Intermediate at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2010High School at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2008B.Tech in Computer Science at College of Technology, G.B.P.U.A & T, Uttarakhand
January 1, 2011 - January 1, 2015Intermediate at Holy Cross School, Laksar, Uttarakhand
January 1, 2009 - January 1, 2010High School at Holy Cross School, Laksar, Uttarakhand
January 1, 2006 - January 1, 2008B.Tech in Computer Science at College of Technology, G.B.P.U.A & T, Uttarakhand
January 11, 2030 - January 1, 2015Intermediate at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2010High School at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2008B.Tech in Computer Science at College of Technology, G.B.P.U.A & T, Uttarakhand
January 11, 2030 - January 1, 2015Intermediate at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2010High School at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2008B.Tech in Computer Science at College of Technology, G.B.P.U.A & T, Uttarakhand
January 11, 2030 - January 1, 2015Intermediate at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2010High School at Holy Cross School, Laksar, Uttarakhand
January 11, 2030 - January 1, 2008Qualifications
iOS Lead Essentials – Essential Developer Academy by Caio & Mike
January 11, 2030 - October 10, 2025Backbase Mobile Developer – Backbase
January 11, 2030 - October 10, 2025iOS Lead Essentials – Essential Developer Academy
January 11, 2030 - October 10, 2025Backbase Mobile Developer – Backbase
January 11, 2030 - October 10, 2025iOS Lead Essentials – Essential Developer Academy
January 11, 2030 - October 10, 2025Backbase Mobile Developer – Backbase
January 11, 2030 - October 10, 2025iOS Lead Essentials – Essential Developer Academy by Caio & Mike
January 11, 2030 - October 10, 2025Backbase Mobile Developer – Backbase
January 11, 2030 - October 10, 2025iOS Lead Essentials – Essential Developer Academy
January 11, 2030 - October 10, 2025Backbase Mobile Developer – Backbase
January 11, 2030 - October 10, 2025iOS Lead Essentials – Essential Developer Academy
January 11, 2030 - October 10, 2025Backbase Mobile Developer – Backbase
January 11, 2030 - October 10, 2025Industry Experience
Software & Internet, Retail, Media & Entertainment, Financial Services, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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