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I am a senior mobile and web developer with over 12 years of experience designing, building, and optimizing mobile applications for iOS and Android, as well as web-based interfaces. I specialize in React Native and native development with Swift, Objective-C, Java, and Kotlin, and I’m adept at state management, API integrations, and CI/CD automation. I thrive collaborating with cross-functional teams, mentoring developers, and delivering high-performance, scalable solutions that align with user needs and business goals. I’m driven by innovation, great UX, and a commitment to solid, maintainable code.…I am a senior mobile and web developer with over 12 years of experience designing, building, and optimizing mobile applications for iOS and Android, as well as web-based interfaces. I specialize in React Native and native development with Swift, Objective-C, Java, and Kotlin, and I’m adept at state management, API integrations, and CI/CD automation. I thrive collaborating with cross-functional teams, mentoring developers, and delivering high-performance, scalable solutions that align with user needs and business goals. I’m driven by innovation, great UX, and a commitment to solid, maintainable code.

Fidel Samson Rassu

Developer, App Developer, Full Stack Developer, +3

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I am a senior mobile and web developer with over 12 years of experience designing, building, and optimizing mobile applications for iOS and Android, as well as web-based interfaces. I specialize in React Native and native development with Swift, Objective-C, Java, and Kotlin, and I’m adept at state management, API integrations, and CI/CD automation. I thrive collaborating with cross-functional teams, mentoring developers, and delivering high-performance, scalable solutions that align with user needs and business goals. I’m driven by innovation, great UX, and a commitment to solid, maintainable code.…I am a senior mobile and web developer with over 12 years of experience designing, building, and optimizing mobile applications for iOS and Android, as well as web-based interfaces. I specialize in React Native and native development with Swift, Objective-C, Java, and Kotlin, and I’m adept at state management, API integrations, and CI/CD automation. I thrive collaborating with cross-functional teams, mentoring developers, and delivering high-performance, scalable solutions that align with user needs and business goals. I’m driven by innovation, great UX, and a commitment to solid, maintainable code.

Available to hire

I am a senior mobile and web developer with over 12 years of experience designing, building, and optimizing mobile applications for iOS and Android, as well as web-based interfaces. I specialize in React Native and native development with Swift, Objective-C, Java, and Kotlin, and I’m adept at state management, API integrations, and CI/CD automation.

I thrive collaborating with cross-functional teams, mentoring developers, and delivering high-performance, scalable solutions that align with user needs and business goals. I’m driven by innovation, great UX, and a commitment to solid, maintainable code.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Mobile Web Developer at HealthBook+

May 31, 2025 - July 8, 2025

Led the development of a mobile health platform focusing on performance, app stability, and bug fixes. Migrated JavaScript codebase to TypeScript for better scalability and maintainability. Developed Bluetooth connectivity for real-time data transfer from health devices. Enhanced app navigation and state management using Redux Toolkit. Worked on CI/CD pipelines and DevOps environments. Mentored developers to ensure best practices.

Senior React/React Native Developer at Innovation Vista

December 31, 2023 - July 8, 2025

Developed multiple mobile applications across industries including e-commerce and restaurant operations. Implemented secure payment gateways, user experience personalization, and location-based features. Conducted thorough code reviews focused on mobile security, performance, and UI/UX improvements. Collaborated with designers and product managers to enhance customer-oriented solutions and engagement metrics.

Software Developer at Entrance Consulting

March 31, 2019 - July 8, 2025

Maintained mobile solutions for retail and corporate clients, including subscription services and payment integrations. Designed interactive apps with location-sensitive promotions, real-time notifications, and loyalty programs. Created user interfaces adhering to brand guidelines and accessibility. Improved user engagement, stability, and cross-platform performance. Conducted end-to-end testing to reduce crash rates and improve app reliability.

Junior Software Developer at COBAIT

July 31, 2017 - July 8, 2025

Participated in developing a business management system automating task and document management. Developed front- and back-end modules ensuring uninterrupted user experience and data security. Debugged and optimized critical software components. Created custom UI controllers for iOS applications and built high-performance Android solutions targeting platform-specific requirements.

Senior Mobile Web Developer at HealthBook+

January 1, 2024 - Present

Led development of a mobile health platform to improve performance, app stability, and key bug fixes. Migrated a JavaScript codebase to TypeScript to enable large-scale development scalability, maintainability, and type safety. Developed Bluetooth-based connectivity for real-time data transfer from health monitoring devices like blood pressure monitors and smartwatches. Improved navigation and performance using Redux Toolkit to enhance state management. Worked on CI/CD pipelines and DevOps environment. Mentored a group of developers to ensure best practices in mobile development. Customized native modules for iOS and Android to meet user requirements.

Senior React/React Native Developer at Innovation Vista

April 1, 2019 - December 1, 2023

Maintained mobile solutions for retail and corporate companies including subscription services and frictionless mobile payment integrations. Designed interactive apps including location-sensitive service promotions, real-time notifications, and consumer loyalty programs. Designed and constructed easily navigable user interfaces inside brand guidelines and accessibility criteria. Perfected programs for user involvement, stability, and cross-platform performance. Conducted end-to-end testing, so reducing crash rates and improving app dependability on several devices.

Software Developer at Entrance Consulting

August 1, 2017 - March 1, 2019

Maintained mobile solutions for retail and corporate companies including subscription services and frictionless mobile payment integrations. Designed interactive apps including location-sensitive service promotions, real-time notifications, and consumer loyalty programs. Designed and constructed easily navigable user interfaces inside brand guidelines and accessibility criteria. Perfected programs for user involvement, stability, and cross-platform performance. Conducted end-to-end testing, reducing crash rates and improving app dependability on several devices.

Software Developer at COBAIT

July 1, 2012 - July 1, 2017

Participated in developing a business management system that enables automation, task management, and secure document sharing. Developed front-end and back-end modules containing uninterrupted user experience and data security. Worked with senior engineers to debug and optimize critical components of the system to improve the performance of the software. Developed custom UI controllers for iOS applications in Swift and Objective-C to ensure smooth and intuitive interactions. Java and Kotlin developed Android solutions with high-performance applications aimed at addressing platform-specific requirements.