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As a Senior Full-Stack Developer with over five years of experience, I specialize in building dynamic and scalable web applications using React and Node.js. My background in crafting interactive user experiences, combined with a interest in emerging technologies like AI and Web3, aligns perfectly with the current and future developments in tech. I am proficient in creating engaging front-end designs and I want to apply my skills to build a secure, high-performance, and intuitive product.…As a Senior Full-Stack Developer with over five years of experience, I specialize in building dynamic and scalable web applications using React and Node.js. My background in crafting interactive user experiences, combined with a interest in emerging technologies like AI and Web3, aligns perfectly with the current and future developments in tech. I am proficient in creating engaging front-end designs and I want to apply my skills to build a secure, high-performance, and intuitive product.

Jak Miro

Front-End Developer, Developer, Full Stack Developer, +1

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As a Senior Full-Stack Developer with over five years of experience, I specialize in building dynamic and scalable web applications using React and Node.js. My background in crafting interactive user experiences, combined with a interest in emerging technologies like AI and Web3, aligns perfectly with the current and future developments in tech. I am proficient in creating engaging front-end designs and I want to apply my skills to build a secure, high-performance, and intuitive product.…As a Senior Full-Stack Developer with over five years of experience, I specialize in building dynamic and scalable web applications using React and Node.js. My background in crafting interactive user experiences, combined with a interest in emerging technologies like AI and Web3, aligns perfectly with the current and future developments in tech. I am proficient in creating engaging front-end designs and I want to apply my skills to build a secure, high-performance, and intuitive product.

Available to hire

As a Senior Full-Stack Developer with over five years of experience, I specialize in building dynamic and scalable web applications using React and Node.js. My background in crafting interactive user experiences, combined with a interest in emerging technologies like AI and Web3, aligns perfectly with the current and future developments in tech. I am proficient in creating engaging front-end designs and I want to apply my skills to build a secure, high-performance, and intuitive product.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Portuguese

Fluent

Work Experience

Senior Mobile & Frontend Developer at Tellspec

August 1, 2022 - Present

Developed new web and native mobile applications (Android/iOS) from scratch and improved existing project functionalities. Utilized technologies including JavaScript, TypeScript, Java, CSS, React, React-native, Expo, Android Studio, Xcode, Next.js, Ionic, Android, iOS, Google Play Store, Apple App Store, Bitbucket and developed Custom AI models.

Lead Front-end Developer at VodafoneDeloitte

July 31, 2021 - August 4, 2025

Developed a high-traffic web application for hundreds of thousands of users, for home and automobile insurance service registrations for Ok Seguros. Independently implemented a sophisticated UI/UX using Vanilla JS and CSS3, while closely collaborating with backend and UI/UX teams. Technologies include React, Node.js, JS, Express, GraphQL, Redux (Thunk and Saga), CSS3/SASS, HTML5, Material-UI, Bootstrap, SAAS-API, Firebase (Hosting, NoSQL, Cloud functions, Auth), Postman, Git, Git-flow.

Software Developer at React-native Team-ITOCT

December 31, 2022 - August 4, 2025

Developed a complex multi-tenant full-stack application for scheduling and feedback collection for car drive tests, focusing on major French car brands. Increased client acquisition and revenue through this project.

Software Developer at Code for all (complementary course)

December 31, 2019 - August 4, 2025

Completed a 14-week intensive/immersive programming bootcamp.

Lead Front-end Developer at Vodafone Deloitte

July 1, 2021 - August 4, 2025

Developed a high-traffic web application for hundreds of thousands of users, focusing on home and automobile insurance service registrations for Ok Seguros. Independently implemented a sophisticated UI/UX using Vanilla JS and CSS3, collaborating closely with backend and UI/UX teams. Contributed to Vodafone's Christmas and Friends Day campaigns by developing two mobile applications for Vodafone's web view mobile platform and updating Vodafone's internal web application.

Software Developer at Unspecified

August 1, 2022 - August 4, 2025

Worked from July 2021 to August 2022 developing new web and native mobile applications (Android/iOS) and improving existing project functionalities using JavaScript, TypeScript, Java, CSS, React, React-native, Expo, Android Studio, Xcode, Next.js, Ionic, and other modern technologies. Delivered projects to Google Play Store and Apple App Store while using tools like BitBucket and custom AI models.

Senior Mobile & Frontend Developer at Tellspec

August 1, 2022 - Present

Developed new web and native mobile applications from scratch and improved existing functionalities using JavaScript, TypeScript, Java, CSS, React, React Native, Expo, Android Studio, Xcode, Next.js, Ionic, and other tools. Managed apps deployment to Google Play Store and Apple App Store and contributed to custom AI models and other development tasks.

Senior Mobile & Frontend Developer at Tellspec

May 1, 2022 - Present

Developed new web and native mobile applications (Android/iOS) from scratch and improved existing project functionalities. Utilized technologies including JavaScript, TypeScript, Java, CSS, React, React Native, Expo, Android Studio, Xcode, Next.js, Ionic, and native mobile stores (Google Play Store, Apple App Store). Managed code repositories using Bitbucket and integrated custom AI models.

Software Developer

January 1, 2017 - August 19, 2025

Role handling front-end & mobile development, driving software solutions from 2014 to 2017 at Coimbra Institute of Engineering; details not explicitly stated but inferred as educational and development experience in the tech field.

Lead Front-end Developer at Vodafone Deloitte

July 1, 2021 - August 19, 2025

Developed a high-traffic web application supporting hundreds of thousands of users for home and automobile insurance service registrations for Ok Seguros. Independently implemented a sophisticated UI/UX using Vanilla JS and CSS3 while collaborating closely with backend and UI/UX teams. Contributed to Vodafone's Christmas and Friends Day campaign with millions of user engagements by developing two mobile applications for Vodafone's webview mobile platform, and updating internal web applications.

React Native Team Member at Coimbra Institute of Engineering

December 1, 2014 - August 19, 2025

Worked on the React Native team responsible for developing scheduling and feedback multi-tenant fullstack applications focused on major French car brands. Supported client acquisition and revenue growth for cardrive testing software.

Software Developer Bootcamp Participant at Code for All - Set

December 1, 2019 - August 19, 2025

Completed a 14-week intensive and immersive programming bootcamp.