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I am an experienced Android Developer with 9 years of expertise in building native Android applications using Kotlin, Java, and modern declarative UI frameworks. Throughout my career, I have played a key role in developing large-scale apps with over a million downloads, focusing on UI/UX, deep debugging, and performance optimizations. Currently based in the U.S., I am authorized to work without sponsorship and open to new opportunities. I am passionate about delivering high-quality software solutions, improving development workflows, and fostering teamwork through knowledge sharing. I consistently drive improvements such as reducing app size, enhancing test coverage, implementing CI/CD pipelines, and ensuring security compliance while boosting user engagement and application responsiveness.…I am an experienced Android Developer with 9 years of expertise in building native Android applications using Kotlin, Java, and modern declarative UI frameworks. Throughout my career, I have played a key role in developing large-scale apps with over a million downloads, focusing on UI/UX, deep debugging, and performance optimizations. Currently based in the U.S., I am authorized to work without sponsorship and open to new opportunities. I am passionate about delivering high-quality software solutions, improving development workflows, and fostering teamwork through knowledge sharing. I consistently drive improvements such as reducing app size, enhancing test coverage, implementing CI/CD pipelines, and ensuring security compliance while boosting user engagement and application responsiveness.

Su Ni Nguyen

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I am an experienced Android Developer with 9 years of expertise in building native Android applications using Kotlin, Java, and modern declarative UI frameworks. Throughout my career, I have played a key role in developing large-scale apps with over a million downloads, focusing on UI/UX, deep debugging, and performance optimizations. Currently based in the U.S., I am authorized to work without sponsorship and open to new opportunities. I am passionate about delivering high-quality software solutions, improving development workflows, and fostering teamwork through knowledge sharing. I consistently drive improvements such as reducing app size, enhancing test coverage, implementing CI/CD pipelines, and ensuring security compliance while boosting user engagement and application responsiveness.…I am an experienced Android Developer with 9 years of expertise in building native Android applications using Kotlin, Java, and modern declarative UI frameworks. Throughout my career, I have played a key role in developing large-scale apps with over a million downloads, focusing on UI/UX, deep debugging, and performance optimizations. Currently based in the U.S., I am authorized to work without sponsorship and open to new opportunities. I am passionate about delivering high-quality software solutions, improving development workflows, and fostering teamwork through knowledge sharing. I consistently drive improvements such as reducing app size, enhancing test coverage, implementing CI/CD pipelines, and ensuring security compliance while boosting user engagement and application responsiveness.

Available to hire

I am an experienced Android Developer with 9 years of expertise in building native Android applications using Kotlin, Java, and modern declarative UI frameworks. Throughout my career, I have played a key role in developing large-scale apps with over a million downloads, focusing on UI/UX, deep debugging, and performance optimizations. Currently based in the U.S., I am authorized to work without sponsorship and open to new opportunities.

I am passionate about delivering high-quality software solutions, improving development workflows, and fostering teamwork through knowledge sharing. I consistently drive improvements such as reducing app size, enhancing test coverage, implementing CI/CD pipelines, and ensuring security compliance while boosting user engagement and application responsiveness.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Senior Android Developer at Freelance Android Developer

July 1, 2025 - Present

Reduced app size by 20% through removing unused resources and optimizing dependencies. Increased test coverage from 25% to 80% using unit and instrumentation tests. Leveraged Firebase Crashlytics to identify and fix critical bugs, resulting in a 40% crash reduction.

Senior Android Developer at PlayNext Lab Inc.

June 30, 2025 - August 8, 2025

Enhanced delivery speed by building CI/CD pipelines with Bitrise and Jenkins, reducing build times by 75%. Developed and optimized apps with Clean Architecture, decreasing code complexity by 60%. Led the transition to Jetpack Compose, reducing UI crashes by 15%. Integrated third-party library for real-time data synchronization that minimized support tickets by 25%. Facilitated weekly knowledge-sharing sessions that improved team communication and reduced duplicated efforts by 10%. Improved banking application security with camera-driven eKYC verification achieving full regulatory compliance and ISO/IEC 27001 standards. Increased user engagement 3x by optimizing BLE beacon scanning and background processing.

Junior Android Developer at PlayNext Lab Inc.

March 1, 2023 - August 8, 2025

Implemented custom WebSocket protocols reducing latency by 60ms for real-time data delivery. Maintained automated test suites leading to consistent 80–90% test pass rates. Optimized image loading and caching using Glide, decreasing load times by 55%, enhancing app responsiveness under limited bandwidth.

Junior Android Developer at FPT Software

March 1, 2017 - August 8, 2025

Collaborated in Agile project teams following professional workflows and standards. Revamped UI/UX based on user feedback from over 30 usability tests, reducing critical bugs by 40% and delivering code under tight deadlines.