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I am a highly experienced UI/React Native Developer with over 10 years of expertise in cross-platform mobile application development. I have successfully published 6 apps on the App Store and Google Play Store, demonstrating my proficiency in React.js, React Native, Redux, and AWS. I excel in leading front-end development initiatives, optimizing app performance, and delivering high-quality user interfaces. I also have a strong background in UI/UX design and have integrated advanced features such as real-time updates, geolocation, and payment processing into various projects. My experience spans from architecting complex applications to mentoring junior developers, ensuring smooth multi-architecture builds and high code quality.…I am a highly experienced UI/React Native Developer with over 10 years of expertise in cross-platform mobile application development. I have successfully published 6 apps on the App Store and Google Play Store, demonstrating my proficiency in React.js, React Native, Redux, and AWS. I excel in leading front-end development initiatives, optimizing app performance, and delivering high-quality user interfaces. I also have a strong background in UI/UX design and have integrated advanced features such as real-time updates, geolocation, and payment processing into various projects. My experience spans from architecting complex applications to mentoring junior developers, ensuring smooth multi-architecture builds and high code quality.

Arango (Leon) David

App Developer, Front-End Developer, Developer, +2

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I am a highly experienced UI/React Native Developer with over 10 years of expertise in cross-platform mobile application development. I have successfully published 6 apps on the App Store and Google Play Store, demonstrating my proficiency in React.js, React Native, Redux, and AWS. I excel in leading front-end development initiatives, optimizing app performance, and delivering high-quality user interfaces. I also have a strong background in UI/UX design and have integrated advanced features such as real-time updates, geolocation, and payment processing into various projects. My experience spans from architecting complex applications to mentoring junior developers, ensuring smooth multi-architecture builds and high code quality.…I am a highly experienced UI/React Native Developer with over 10 years of expertise in cross-platform mobile application development. I have successfully published 6 apps on the App Store and Google Play Store, demonstrating my proficiency in React.js, React Native, Redux, and AWS. I excel in leading front-end development initiatives, optimizing app performance, and delivering high-quality user interfaces. I also have a strong background in UI/UX design and have integrated advanced features such as real-time updates, geolocation, and payment processing into various projects. My experience spans from architecting complex applications to mentoring junior developers, ensuring smooth multi-architecture builds and high code quality.

Available to hire

I am a highly experienced UI/React Native Developer with over 10 years of expertise in cross-platform mobile application development. I have successfully published 6 apps on the App Store and Google Play Store, demonstrating my proficiency in React.js, React Native, Redux, and AWS. I excel in leading front-end development initiatives, optimizing app performance, and delivering high-quality user interfaces.

I also have a strong background in UI/UX design and have integrated advanced features such as real-time updates, geolocation, and payment processing into various projects. My experience spans from architecting complex applications to mentoring junior developers, ensuring smooth multi-architecture builds and high code quality.

Skills

Experience Level

Expert

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Work Experience

Senior React Native Developer at Antares Technologies

March 1, 2022 - Present

Led development of a cross-platform mobile voice recording and editing app (VoCap), ensuring robust performance and seamless user experience across iOS and Android. Designed app architecture, resolved complex build and linking issues, and integrated advanced audio processing features. Built modular React Native components, optimized runtime, and collaborated with product and QA teams to deliver updates on schedule. Maintained VoCap for 3 years, reducing crash rates by 50% and mentoring junior developers to maintain high code quality.

Senior React Consultant at Techfield

June 30, 2022 - August 19, 2025

Led front-end development for an in-house app for a pest control company to manage technician data and workflows. Spearheaded front-end design creating user-friendly, scalable interfaces using React.js and Redux. Delivered responsive UI that reduced technician downtime by 25% and improved operational visibility. Optimized component performance for seamless experience across multiple web platforms, resulting in 40% improved load times. Conducted regular code reviews and standardized workflows to maintain code integrity. Collaborated with cross-functional teams to align technical solutions with business goals, driving 30% improvement in sales data visualization accuracy.

Senior React Native Developer at Airbnb

December 31, 2021 - August 19, 2025

Streamlined order and payment processes by integrating Redux and React Native Elements enabling real-time live order updates. Developed dynamic order-tracking pages and APIs, achieving a 98% satisfaction rate and increasing booking completion rates. Enhanced app performance using React Native Hermes and optimized Redux state management, improving Android startup time by 60%. Engineered native modules in Swift and Kotlin for Apple Pay and Google Pay integrations, boosting checkout speeds by 25%. Implemented geolocation services for dynamic order fulfillment, improving delivery efficiency by 30%. Conducted unit testing achieving 85% test coverage and managed project tasks using JIRA.

Senior React Native Developer at Nerd Wallet

September 30, 2019 - August 19, 2025

Implemented React-Autocomplete to improve data entry efficiency on mobile platforms, reducing form completion time by 40% and boosting user satisfaction. Developed RESTful API endpoints for user transaction history using Express.js and MongoDB with minimal latency. Led UI/UX design using React Native Paper and Material Kit React Native to enhance visual appeal and usability. Delivered consistent Material Design layouts across iOS and Android. Collaborated with back-end developers to ensure seamless data integration, resulting in a 15% performance improvement in key data synchronization.

React Native Developer at Vogue

October 31, 2017 - August 19, 2025

Developed and maintained the Vogue Runway Fashion Shows mobile app using React Native with offline capabilities, achieving 1M+ downloads and a 4.8-star average rating. Integrated Mapbox for interactive location displays and Fetch API for content delivery. Contributed to development of a map-based social network enabling location-based user connections and event discovery. Collaborated closely with design teams to produce pixel-perfect UIs meeting brand design standards.

React Native Developer at Discord Inc.

November 30, 2015 - August 19, 2025

Led mobile application development projects building a versatile UI component library with core React Native concepts, reducing development time by 20%. Integrated React Navigation and Redux for efficient state management and responsive navigation. Improved chat performance by optimizing reducer logic and implementing lazy-loaded assets. Collaborated with the team to improve app performance and introduce new features.

iOS & Android Native Mobile Developer at Sanmina Corporation

January 31, 2015 - August 19, 2025

Engineered biometric authentication systems with RESTful API integration using Alamofire and Retrofit for iOS and Android apps. Developed fingerprint authentication enhancing security. Migrated codebase from Objective-C to Swift improving app security and performance, reducing memory leaks by 30%. Delivered modular architecture to handle 1M+ users without significant load times.