marcostl2

Led the creation of a scalable Design System, improving UI consistency and accelerating feature development by 2x. Collaborated with frontend engineers to build reusable UI components in Vue.js, Nuxt.js and Flutter, ensuring accessibility, performance, and scalability. Mentored and guided junior frontend developers during the early phases of the project, helping them implement UI best practices. Designed and optimized a White Label Checkout, resulting in $2M in sales within 3 months. Enhanced authentication flows, reducing customer service calls and improving user onboarding. Analyzed user behavior data (Google Analytics, Hotjar) to drive UI/UX decisions, increasing usability and conversion rates.

Developed and optimized key exchange functionalities (trading, deposits, withdrawals, social network) using React, TypeScript and SASS. Collaborated with UI/UX teams to refine user interactions, ensuring a seamless and intuitive experience for traders. Conducted regular code reviews, enforcing best practices and improving code maintainability. Researched and implemented performance optimizations, reducing load times and enhancing frontend responsiveness. Proactively suggested and implemented UI/UX improvements, enhancing usability and accessibility across the platform. Worked in a fast-paced, agile environment, iterating quickly and refining frontend solutions based on user feedback and business needs.

Sole UI/UX Designer, responsible for designing and improving interfaces across the company’s digital products. Designed the UI/UX for Customer App v2, focusing on usability improvements and a more intuitive experience. Developed and maintained frontend applications using Vue.js, Nuxt.js, and Vuetify, ensuring optimal scalability and responsiveness across devices. Created the UI for a Point of Sales (POS) App, enabling 10k+ sellers to efficiently manage transactions. Collaborated directly with developers to bridge the gap between design and implementation, ensuring UI consistency and high-quality execution. Conducted user research and usability testing, iterating on designs based on feedback and business goals. Performed code reviews, maintaining frontend best practices and ensuring maintainable, high-quality code. Optimized frontend performance, reducing load times and improving mobile responsiveness.