Available to hire
Hi, I’m Raphael Richardson Ballester, a versatile front-end developer with over three years of experience in digital design and web performance optimization. I specialize in HTML, CSS, JavaScript, TypeScript, and React, with hands-on experience managing CMS platforms and refining user experience to drive measurable results.
I’ve built responsive applications with React Native, Expo, HTML, CSS, and Firebase, collaborating with cross-functional teams to deliver accessible interfaces and robust performance. I stay current with emerging front-end technologies and SEO best practices to align content with business goals and user needs.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
Spanish; Castilian
Fluent
English
Advanced
Work Experience
React Native Developer at Freelance
February 1, 2022 - PresentDeployed new features based on stakeholder feedback, increasing client satisfaction by 12%. Developed modular reusable components to speed development and improve code integrity. Enhanced app efficiency by 5% through refining React Native components and protocols. Integrated external libraries and APIs increasing user interaction by 7%. Designed user-centric workflows and wireframes and ensured cross-browser compatibility and responsive design. Stayed up to date with latest front-end technologies and design trends.
Mobile Engineer at My unbounded Imagination
February 1, 2022 - August 6, 2025Developed intuitive mobile apps using React Native, Expo, HTML, CSS, and JSX/JavaScript. Coordinated with back-end developers to align front-end modules with APIs. Improved application efficiency by 3% through optimization and testing. Collaborated with multidisciplinary teams to build and release innovative mobile solutions on time. Maintained client relationships ensuring clear communication of project goals. Released apps on iOS and Android, resulting in a 21% increase in downloads and positive user feedback.
Web Developer, Designer and Digital Marketing Manager at Richbar SRL
September 1, 2021 - August 6, 2025Conducted A/B testing and data analysis to optimize digital marketing campaigns. Managed and updated websites to align with marketing goals, improving UI satisfaction by 13%. Reduced website load time by 30% through image and script optimization. Implemented SEO strategies that increased organic search traffic by 150% in six months. Created landing pages ensuring cross-browser functionality. Collaborated with web architects to design innovative UI solutions. Used Adobe Creative Suite for image and promotional material editing, achieving 96% site operational efficiency.
React Native Developer at Freelance
February 1, 2022 - PresentDelivered new functionalities based on stakeholder input resulting in a 12% increase in client satisfaction. Developed modular and reusable components to speed up development cycles and improve code quality. Enhanced application performance by 5% with refined React Native components and best practices. Integrated external libraries and APIs boosting user interaction by 7%. Created user-centric workflows and wireframes based on specifications. Ensured cross-browser compatibility and adaptive design principles. Maintained current knowledge of front-end technologies and design trends.
Mobile Engineer at My unbounded Imagination
February 1, 2022 - August 6, 2025Built intuitive mobile applications using React Native, Expo, HTML, CSS, and JSX/JavaScript. Collaborated with back-end developers to integrate APIs. Improved application performance by 3% through code optimization and rigorous testing. Coordinated with multidisciplinary teams to deliver innovative mobile solutions within deadlines. Maintained client relationships ensuring clear communication of project goals. Published iOS and Android apps, achieving a 21% increase in downloads and positive feedback.
Web Developer, Designer and Digital Marketing Manager at Richbar SRL
September 1, 2021 - August 6, 2025Managed A/B testing and data analytics to optimize digital marketing campaigns. Maintained and updated websites to align with marketing goals, improving user interface satisfaction by 13%. Reduced website latency by 30% through image and script optimization. Implemented SEO strategies that increased organic search traffic by 150% over six months. Designed and built landing pages with HTML and CSS ensuring cross-browser compatibility. Collaborated with web architects to create advanced and innovative UI designs. Edited images and promotional materials with Adobe Creative Suite, boosting site efficiency to 96%.
React Native Developer at Freelance
February 1, 2022 - PresentExecuted functional deployments based on stakeholder feedback, achieving a 12% increase in client satisfaction. Developed modular and reusable components to expedite the mobile development lifecycle and enhance code integrity. Optimized application performance by 5% through refining React Native components and adhering to industry best practices. Integrated external libraries and RESTful APIs to amplify user interaction by 7%. Designed intuitive application workflows and layouts based on user requirements, improving overall user experience. Ensured cross-browser interoperability and implemented adaptive design principles across applications. Monitored emerging front-end technologies, frameworks, and design paradigms to maintain competitive standards. Utilized React Native, HTML, CSS, JavaScript/TypeScript, and Firebase to develop responsive applications that boosted user functionality.
Mobile Engineer at My unbounded Imagination
February 28, 2022 - September 4, 2025Engineered and implemented mobile applications using React Native, Expo, HTML, CSS, and JSX/JavaScript, enhancing user experience. Collaborated with back-end engineers to seamlessly integrate front-end modules with APIs. Enhanced application efficiency by 3% through methodical code optimization and rigorous testing protocols. Coordinated with multidisciplinary teams to conceive, develop, and deploy innovative mobile solutions within set deadlines. Cultivated strong client relationships by clearly articulating project objectives and detailed specifications. Deployed mobile applications compatible with both iOS and Android platforms, resulting in a 21% surge in downloads and favorable user feedback.
Web Developer, Designer and Digital Marketing Manager at Richbar SRL
September 30, 2021 - September 4, 2025Conducted A/B testing using data analytics tools to improve digital marketing campaigns. Administered and revised web platforms to synchronize with marketing objectives, enhancing user interface satisfaction by 13%. Diminished website latency by 30% via image and script amelioration. Implemented Search Engine Optimization tactics, yielding a 150% augmentation in natural search engine traffic over six months. Conceived and constructed landing pages utilizing HTML and CSS, guaranteeing cross-browser functionality. Collaborated with web architects to create sophisticated and groundbreaking User Interface designs. Manipulated imagery and promotional collateral with Adobe Creative Suite, elevating site operational efficiency to 96%.
React Native Developer at Freelance
February 1, 2022 - PresentDelivered new functionalities based on stakeholder feedback, resulting in a 12% increase in client satisfaction. Built modular, reusable React Native components to expedite development and strengthen code quality. Optimized performance through targeted refinements of components and rendering techniques, achieving a 5% improvement. Integrated external libraries and RESTful APIs to enhance user interactions by 7%. Designed user-friendly workflows and layouts aligned with requirements, ensuring cross-platform compatibility for Android and iOS.
Mobile Engineer at My unbounded Imagination
February 1, 2022 - September 22, 2025Engineered and implemented mobile applications using React Native, Expo, HTML, CSS, and JSX/JavaScript to enhance user experience on both iOS and Android. Coordinated with back-end engineers to integrate front-end modules with RESTful APIs. Refined application efficacy by 3% through code optimization and rigorous testing. Collaborated with multidisciplinary teams to conceive, develop, and deploy innovative mobile solutions within prescribed timelines. Released mobile applications compatible with iOS and Android platforms, achieving a 21% surge in downloads and favorable user feedback.
Web Developer, Designer and Digital Marketing Manager at Richbar SRL
September 1, 2021 - September 22, 2025Conducted A/B testing using data analytics tools to improve digital marketing campaigns. Administered and revised web platforms to synchronize with marketing objectives, enhancing user interface satisfaction by 13%. Diminished website latency by 30% via image and script amelioration. Implemented SEO tactics, yielding a 150% augmentation in natural search engine traffic over six months. Conceived and constructed landing pages utilizing HTML and CSS, guaranteeing cross-browser functionality. Conjoined with web architects to engender sophisticated and groundbreaking UI designs. Manipulated imagery and promotional collateral with Adobe Creative Suite, thereby elevating site operational efficiency.
React Native Developer at Freelance
February 1, 2022 - PresentLed deployment of new features based on stakeholder feedback, boosting client satisfaction by 12%. Built modular components to accelerate development and improve code maintainability. Optimized React Native components to enhance performance by 5%. Integrated external libraries and RESTful APIs to enrich user interactions by 7%. Designed intuitive workflows and layouts, ensuring cross-platform compatibility for iOS and Android.
Mobile Engineer at My Unbounded Imagination
February 1, 2022 - September 22, 2025Developed mobile apps using React Native and Expo with HTML, CSS, and JSX/JavaScript to enhance iOS and Android functionality. Collaborated with backend engineers to integrate front-end modules with RESTful APIs. Improved app efficiency by 3% through code optimization and thorough testing. Delivered solutions on schedule while maintaining clear client communication, resulting in strong downloads and positive feedback (21% increase).
Web Developer, Designer and Digital Marketing Manager at Richbar SRL
September 1, 2021 - September 22, 2025Conducted A/B testing and analytics to optimize digital marketing campaigns; revised web platforms to align with marketing objectives, improving UI satisfaction by 13%. Reduced site latency by 30% through image and script optimization. Implemented SEO tactics yielding a 150% rise in organic traffic over six months. Collaborated with web architects on sophisticated UI designs and leveraged Adobe Creative Suite to boost site efficiency to 96%.
React Native Developer at Freelance
February 1, 2022 - PresentDelivered new functionalities based on stakeholder feedback, improving client satisfaction by 12%. Built modular, maintainable components to accelerate development and ensure code quality. Optimized React Native components to boost performance and integrated external libraries and RESTful APIs to enhance user interactions. Ensured cross‑platform compatibility for Android and iOS; stayed current with frontend trends to maintain a modern approach.
Mobile Engineer at My unbounded Imagination
February 1, 2022 - September 22, 2025Engineered mobile apps with React Native, Expo, HTML, CSS, and JSX/JavaScript for iOS and Android. Coordinated with back-end engineers to integrate front-end modules with RESTful APIs, achieving notable improvements. Released apps resulting in a 21% download uplift and positive user feedback.
Web Developer, Designer and Digital Marketing Manager at Richbar SRL
September 30, 2021 - September 22, 2025Led digital marketing initiatives, conducted A/B testing, and revised web platforms to align with marketing goals. Reduced website latency by 30%, boosted natural search traffic by 150%, and collaborated with UI/UX teams to craft compelling interfaces and landing pages.
React Native Developer at Freelance
February 1, 2022 - PresentImplemented new functionalities based on stakeholder feedback; developed modular, recyclable components to expedite development and maintainability; optimized application performance; integrated external libraries and APIs to enhance user interaction; designed user-friendly workflows and layouts; ensured cross-browser compatibility and responsive design; stayed current with emerging front-end technologies to drive innovation.
Mobile Engineer at My unbounded Imagination
February 28, 2022 - September 22, 2025Engineered mobile applications using React Native, Expo, HTML, CSS, and JavaScript; collaborated with back-end engineers to synchronize front-end modules with APIs; enhanced application efficiency through targeted code optimization and testing; partnered with multidisciplinary teams to deliver innovative mobile solutions within set timelines; released mobile applications for iOS and Android with strong user feedback.
Web Developer, Designer and Digital Marketing Manager at Richbar SRL
September 30, 2021 - September 22, 2025Directed web development, design, and digital marketing efforts; improved UI satisfaction and reduced latency via performance optimizations; implemented SEO tactics resulting in significant traffic growth; produced landing pages with HTML/CSS, and collaborated with web architects to create sophisticated UI designs; managed imagery and collateral to elevate site efficiency.
Education
Bachelor Art at UNAPEC
January 9, 2017 - September 12, 2019Bachelor of Graphic Design at Universidad acción pro educación y cultura (UNAPEC)
January 1, 2014 - September 1, 2019Certification in Information Technology - Software Engineering at New Brunswick Community College (NBCC)
September 1, 2025 - September 1, 2027Bachelor of Graphic Design at Universidad acción pro educación y cultura (UNAPEC)
January 1, 2014 - September 1, 2019Certification in Information Technology - Software Engineering at New Brunswick Community College (NBCC)
September 1, 2025 - September 1, 2027Certification, Information Technology - Software Engineering at New Brunswick Community College (NBCC)
September 1, 2025 - September 1, 2027Bachelor, Graphic Design at Universidad acción pro educación y cultura (UNAPEC)
January 1, 2014 - September 1, 2019Certification, Information Technology - Software Engineering at New Brunswick Community College (NBCC)
September 1, 2025 - September 1, 2027Bachelor, Graphic Design at Universidad acción pro educación y cultura (UNAPEC)
January 1, 2014 - September 1, 2019Certification, Information Technology - Software Engineering at New Brunswick Community College (NBCC)
September 1, 2025 - September 1, 2027Bachelor, Graphic Design at Universidad acción pro educación y cultura (UNAPEC)
January 1, 2014 - September 1, 2019Certification, Information Technology - Software Engineering at New Brunswick Community College (NBCC)
September 1, 2025 - September 1, 2027Bachelor, Graphic Design at Universidad acción pro educación y cultura (UNAPEC)
January 1, 2014 - September 1, 2019Certification, Information Technology - Software Engineering at New Brunswick Community College (NBCC)
September 1, 2025 - September 1, 2027Bachelor, Graphic Design at Universidad acción pro educación y cultura (UNAPEC)
January 1, 2014 - September 1, 2019Qualifications
SEO Expert Woorank
May 12, 2025 - May 12, 2025Google Campaign Manager Certification
January 11, 2030 - August 6, 2025Woorank SEO Expert Certification
January 11, 2030 - August 6, 2025Google Campaign Manager Certification
January 11, 2030 - August 6, 2025Woorank SEO Expert Certification
January 11, 2030 - August 6, 2025Google Campaign Manager Certification
January 11, 2030 - September 4, 2025Woorank SEO Expert Certification
January 11, 2030 - September 4, 2025Google Campaign Manager Certification
January 11, 2030 - September 22, 2025Woorank SEO Expert Certification
January 11, 2030 - September 22, 2025Google Campaign Manager Certification
January 11, 2030 - September 22, 2025Woorank SEO Expert Certification
January 11, 2030 - September 22, 2025Google Campaign Manager Certification
January 11, 2030 - September 22, 2025Woorank SEO Expert Certification
January 11, 2030 - September 22, 2025Google Campaign Manager Certification
January 11, 2030 - September 22, 2025Woorank SEO Expert Certification
January 11, 2030 - September 22, 2025Industry Experience
Software & Internet, Media & Entertainment, Education, Retail, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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