Full Stack Developer blending engineering and design to build scalable, user-friendly web applications.
I work mainly with React.js, TypeScript, Node.js, and .NET/C#, focusing on clean architecture, reusable components, and solid UI/UX.
Full Stack Developer with a background in Design and over a decade of experience in creative leadership and digital media production.
Developed and maintained responsive enterprise web applications for global operations, working with React, JavaScript (ES6+), and TypeScript...
Front-end: React.js · TypeScript · JavaScript (ES6+) · HTML5 · CSS3/SASS · Tailwind CSS · Figma · UI/UX Design
Back-end & APIs: Node.js · C# (.NET) · RESTful APIs · PHP · SQL (Relational Databases)
Tools & Platforms: Git · GitHub · Azure DevOps · OutSystems · WordPress · Scrum / Agile
-
Full Stack Web Developer @ ExxonMobil
Developed and maintained enterprise web applications using React.js, TypeScript, Node.js, and .NET/C#. Built and consumed RESTful APIs, translated Figma designs into reusable components, and collaborated in global Agile/Scrum teams. -
Front-End Developer @ Inovatório Marketing Digital e Design
Built responsive interfaces using HTML5, CSS3, JavaScript, and WordPress, focusing on UI/UX improvements and cross-browser compatibility. -
Freelance Front-End Developer @ Stract.to Delivered clean, maintainable front-end code and developed custom web components for a Google Sheets extension.
- Scalable Full Stack applications with React, Node.js, and .NET/C#
- Clean, maintainable code and component-driven architectures
- Interfaces that balance performance, accessibility, and visual clarity
- Bridging design and engineering to ship products that feel polished end-to-end
- Languages: Portuguese (Native), English (Advanced), Spanish (Intermediate)
Portfolio: https://marioohashi.vercel.app/