I am a Mobile Application Developer with over 7 years of experience designing, building, and launching iOS and cross-platform apps, including more than 3 years in commercial React Native development. I excel at guiding projects from concept to deployment and collaborating with stakeholders to define features and deliver scalable, high-performance solutions. I specialize in integrating RESTful APIs, maps/geolocation, and secure payment/authentication flows, with experience in tourism-related applications. I have led end-to-end deliveries for App Store and Google Play, and I partner with designers to implement responsive, accessible interfaces that follow UX best practices and platform guidelines.

Jason Jon Carreos

I am a Mobile Application Developer with over 7 years of experience designing, building, and launching iOS and cross-platform apps, including more than 3 years in commercial React Native development. I excel at guiding projects from concept to deployment and collaborating with stakeholders to define features and deliver scalable, high-performance solutions. I specialize in integrating RESTful APIs, maps/geolocation, and secure payment/authentication flows, with experience in tourism-related applications. I have led end-to-end deliveries for App Store and Google Play, and I partner with designers to implement responsive, accessible interfaces that follow UX best practices and platform guidelines.

Available to hire

I am a Mobile Application Developer with over 7 years of experience designing, building, and launching iOS and cross-platform apps, including more than 3 years in commercial React Native development. I excel at guiding projects from concept to deployment and collaborating with stakeholders to define features and deliver scalable, high-performance solutions.

I specialize in integrating RESTful APIs, maps/geolocation, and secure payment/authentication flows, with experience in tourism-related applications. I have led end-to-end deliveries for App Store and Google Play, and I partner with designers to implement responsive, accessible interfaces that follow UX best practices and platform guidelines.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Lead Mobile Developer at Ingenuity Global Consulting, Inc.
July 1, 2021 - August 26, 2022
Led end-to-end mobile app development, documenting project specs and delivering three native iOS apps within a 3-month window. Collaborated with designers using Figma/Adobe XD to implement responsive UIs aligned with UX designs. Conducted code reviews, mentored junior developers and interns, and authored React Native training modules to support team growth. Coordinated with backend teams to ensure secure API integration and reliable data synchronization across applications.
React Native Developer at Ingenuity Global Consulting, Inc.
July 1, 2021 - September 11, 2025
Refactored a React Native contact tracing app to TypeScript for maintainability and scalability. Leveraged third-party libraries to embed biometric authentication, aligning with mobile security best practices. Significantly accelerated project completion by resolving 3 critical bugs and implementing 2 new features within the deadline.
Lead Mobile Developer at Independent Contractor
September 1, 2020 - September 11, 2025
Integrated Apollo GraphQL with Redux for efficient state management. Authored handover documentation and user guides to ensure long-term maintainability of delivered solutions.
Lead Mobile Developer at Independent Contractor
March 1, 2020 - September 11, 2025
Negotiated with the client regarding project specifications and prerequisites for a more realistic timeline and cost, securing a PHP 100,000 contract. Implemented 5+ core functionalities using React Native, TypeScript, and tools like React Native Debugger to deliver a more robust application and an easier-to-debug codebase. Managed the entire project lifecycle, from requirements gathering, development, QA, and deployment, resulting in a successful deployment to the App Store & Play Store within 1 month.
Frontend Developer at Ingenuity Global Consulting, Inc.
April 1, 2021 - September 11, 2025
Contributed to frontend development across web/mobile front-end projects; learned Redux for state management and supported the migration of frontend architectures, building reusable components and collaborating with designers to deliver responsive interfaces.
React Native Developer at Ingenuity Global Consulting, Inc.
October 1, 2017 - December 31, 2017
Built 2 core features and contributed to the completion and feasibility check for React Native cross-platform development; learned Redux for state management and collaborated with teams to ship features.
iOS Developer at Ingenuity Global Consulting, Inc.
May 1, 2015 - February 28, 2019
Developed native iOS apps, implemented core features, and matured in iOS development; collaborated with cross-functional teams to analyse requirements and contribute to early-stage architecture.
Lead Mobile Developer at Ingenuity Global Consulting, Inc.
August 31, 2022 - September 14, 2025
Documented project specifications for a rescued project and delivered its 3 native iOS application counterparts within the agreed 3-month timeframe. Collaborated with designers to implement responsive, accessible mobile UIs aligned with UX designs. Conducted code reviews, mentored junior developers and interns, and authored React Native training modules to support team growth and knowledge sharing. Coordinated with backend teams to ensure secure API integration and reliable data synchronization across applications.
React Native Developer at Ingenuity Global Consulting, Inc.
July 31, 2021 - September 14, 2025
Refactored a React Native contact tracing app to TypeScript for maintainability and scalability. Leveraged third-party libraries to embed biometric authentication, aligning with mobile security best practices. Accelerated project completion by resolving 3 critical bugs and implementing 2 new features within the deadline.
Lead Mobile Developer at Independent Contractor
September 30, 2020 - September 14, 2025
Integrated Apollo GraphQL with Redux for efficient state management. Authored handover documentation and user guides to ensure long-term maintainability of delivered solutions.
Lead Mobile Developer at Independent Contractor
March 31, 2020 - September 14, 2025
Negotiated with the client regarding project specifications and prerequisites for a more realistic timeline and cost, securing a PHP 100,000 contract. Implemented 5+ core functionalities using React Native, TypeScript, and tools like React Native Debugger to deliver a robust application and an easier-to-debug codebase. Managed the entire project lifecycle, from requirements gathering, development, QA, and deployment, resulting in a successful deployment to the App Store & Play Store within 1 month.
React Native Developer at Ingenuity Global Consulting, Inc.
December 31, 2017 - September 14, 2025
Built 2 core features and contributed to the application's completion; gained experience with state management in React Native using Redux.
Frontend Developer at Ingenuity Global Consulting, Inc.
April 30, 2021 - September 14, 2025
Frontend development of UI components and interfaces; collaborated with backend teams to ensure smooth integration and delivery.
iOS Developer at Ingenuity Global Consulting, Inc.
February 28, 2019 - September 14, 2025
iOS development using Swift/Objective-C; contributed to multiple native iOS applications.

Education

Master of Business Information Systems at Torrens University Australia
September 12, 2022 - August 23, 2024
Bachelor of Science in Computer Science at Ateneo de Davao University
June 7, 2010 - March 28, 2014
Master of Business Information Systems at Torrens University Australia
January 1, 2022 - December 31, 2024
Bachelor of Science in Computer Science at Ateneo de Davao University
January 1, 2010 - December 31, 2014

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Travel & Hospitality, Professional Services, Media & Entertainment