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I am a dedicated native mobile developer with 7 years of experience building native and hybrid apps using Swift, Java, and Kotlin, and crafting cross-platform experiences. I’ve contributed to AI-powered and fintech product teams, delivering robust mobile solutions for thousands of users. I thrive on turning complex requirements into clean, maintainable code and leading feature development, code reviews, and mentoring junior developers. I stay curious about emerging tech and prioritize performance, security, and user-centric design.…I am a dedicated native mobile developer with 7 years of experience building native and hybrid apps using Swift, Java, and Kotlin, and crafting cross-platform experiences. I’ve contributed to AI-powered and fintech product teams, delivering robust mobile solutions for thousands of users. I thrive on turning complex requirements into clean, maintainable code and leading feature development, code reviews, and mentoring junior developers. I stay curious about emerging tech and prioritize performance, security, and user-centric design.

Victor E Zinwa

App Developer, Web Developer, Full Stack Developer, +4

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I am a dedicated native mobile developer with 7 years of experience building native and hybrid apps using Swift, Java, and Kotlin, and crafting cross-platform experiences. I’ve contributed to AI-powered and fintech product teams, delivering robust mobile solutions for thousands of users. I thrive on turning complex requirements into clean, maintainable code and leading feature development, code reviews, and mentoring junior developers. I stay curious about emerging tech and prioritize performance, security, and user-centric design.…I am a dedicated native mobile developer with 7 years of experience building native and hybrid apps using Swift, Java, and Kotlin, and crafting cross-platform experiences. I’ve contributed to AI-powered and fintech product teams, delivering robust mobile solutions for thousands of users. I thrive on turning complex requirements into clean, maintainable code and leading feature development, code reviews, and mentoring junior developers. I stay curious about emerging tech and prioritize performance, security, and user-centric design.

Available to hire

I am a dedicated native mobile developer with 7 years of experience building native and hybrid apps using Swift, Java, and Kotlin, and crafting cross-platform experiences. I’ve contributed to AI-powered and fintech product teams, delivering robust mobile solutions for thousands of users. I thrive on turning complex requirements into clean, maintainable code and leading feature development, code reviews, and mentoring junior developers. I stay curious about emerging tech and prioritize performance, security, and user-centric design.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Language

English

Fluent

Javanese

Advanced

Work Experience

Senior Android Developer at Trust Payments

February 1, 2025 - Present

Designed and developed scalable Android applications for fintech SDK and PoS products. Led development of self-checkout automation system improving operational efficiency and security. Implemented real-time camera feed integration for fraud detection and prevention. Architected high-level encryption solutions for secure API communication and user authentication. Optimized application performance and security to exceed industry standards.

Senior Android Developer at CloudChef

March 31, 2025 - July 15, 2025

Led unification of sensor modules (RGB, IR cameras, QR code) and Recipe Guidance System into a single Android SDK platform, improving integration efficiency by 30%. Owned end-to-end development and deployment of Recipe Guidance Systems, achieving 20% reduction in time-to-market. Collaborated cross-functionally with Product, Design, and Data teams to define, design, and ship new features, enhancing user satisfaction by 25%. Optimized app performance and UX through continuous feedback, resulting in 15% increase in user retention. Implemented robust testing strategies reducing critical bugs by 40%; mentored junior developers, improving code quality and team productivity by 50%. Stayed current with industry trends to ensure cutting-edge solutions.

Mobile Developer II (Contract) at SingKing Karaoke

October 31, 2023 - July 15, 2025

Engineered speech-to-music note conversion system for Sing-Along game, reducing error rates by 30%. Developed music lyric feature boosting user growth by 60% and engagement by 50%. Created new Sing-Along game feature attracting 100,000 new active users within six months, increasing revenue by 75%. Implemented casting feature enabling karaoke streaming to home TVs, expanding audience reach by 40%. Built Kotlin-based ML model for pitched note analysis, improving computational efficiency by 35% and reducing processing time by 20%.

Android Developer I (Contract) at Tribes

August 31, 2022 - July 15, 2025

Transformed Figma designs into responsive UI using Jetpack Compose and Material Design, elevating UX by 70%. Streamlined REST API queries, reducing HTTPS request load times by 20% for movie catalogue app. Led agile team of 5 developers, managing JIRA tickets for Kotlin and Jetpack Compose tasks, boosting productivity by 25%.

Senior Android Developer at CloudChef

May 1, 2024 - March 1, 2025

Led the unification of sensor modules (RGB, IR cameras, QR code) and Recipe Guidance System into a single Android SDK-based platform, improving integration efficiency by 30%. Owned the development and deployment of all Recipe Guidance Systems, achieving a 20% reduction in time-to-market. Collaborated with cross-functional teams to define, design, and ship new features, enhancing app functionality and user satisfaction by 25%. Optimized the app's performance and user experience through continuous feedback and iterations, resulting in a 15% increase in user retention. Implemented robust testing strategies to ensure reliability and scalability, reducing critical bugs by 40%. Contributed to code reviews and mentored junior developers, improving code quality and team productivity by 50%.

Mobile Developer II (contract) at SingKing Karaoke

August 1, 2022 - October 1, 2023

Engineered a state-of-the-art system for speech-to-music note conversion, enhancing precision and efficiency in the Sing-Along game. Implemented a music lyric feature, boosting user growth and engagement. Developed a new Sing-Along game feature that attracted 100,000 active users within six months, increasing engagement and revenue. Implemented a casting feature to stream karaoke sessions to home TVs, expanding audience reach. Created an ML model in Kotlin to analyze pitched notes, improving computational efficiency and reducing processing time.

Android Developer I (contract) at Tribes

June 1, 2021 - August 1, 2022

Transformed Figma designs into a responsive UI, elevating UX using Jetpack Compose, Material Design, and Custom UI components. Streamlined REST API queries, reducing load times for the client movie catalogue app. Led an agile team of 5, generating JIRA tickets for Kotlin and Jetpack Compose UI Library tasks, boosting team productivity.