Jose U.

Jose U.

Rio de Janeiro, Brazil
Hire Jose U. Hire Jose U. Hire Jose U.

About Me

Jose is a Senior Front-end Developer experienced in standard front-end best practices, proficient in the latest client-side technologies, and other tools related to React front-end development. He implements highly responsive user interface components, writes application interface codes using React workflows, and deploys scalable front-end architecture to support multiple solutions, packaging and deploying UI deliverables with high reusability and scalability.

Frontend

QA & Testing

Other

Work history

UpStack
UpStack
Senior Front-end Developer
2023 - Present (2 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

Zapay
Zapay
Senior Front-end Developer
2023 - Present (2 years)
Remote
  • Working as a member of the checkout improvement team, decreasing latency and improving conversion.

  • Helping the company create a culture of asynchronous communication and knowledge exchange between developers.

  • Working on latency improvements, A/B testing, SSE events, and security fields (anti-fraud inputs).

  • Helping the UX team improve conversion.

Serasa Experian
Serasa Experian
Senior Full-stack Developer
2023 - 2023
Remote
  • Worked on implementing a new bank connection in the most important credit score system in Brazil, with over 100K users connecting their accounts in the first month alone.

  • Implemented latency improvements, making pages 2x faster.

  • Worked on front-end accessibility development (for blind and deaf users) and on BFF (back-end for front-end) development.

  • Worked on personal data security development, making data collection safer.

PayPal
PayPal
Senior Full-stack Developer
2021 - 2023 (2 years)
Remote
  • Produced new solutions to migrate the legacy app to a modern React stack, which reduced latency and improved user checkout.

  • Implemented and maintained new features on the checkout app, tracking latency and optimizing user interaction.

  • Provided solutions to maximize performance improvements and contributed to a POC for a new PayPal checkout iteration.

iClinic (now Afya)
iClinic (now Afya)
Senior Front-end Developer
2021 - 2021
Remote
  • Designed, developed, and implemented micro-front-end solutions to enhance the performance of the iClinic financial portal.

  • Contributed solutions to improve the design system and maximize performance on the React application.

  • Worked with designers to deliver new UI and UX solutions with enhanced interaction and end-user experience.

Panini
Panini
Senior Front-end Developer
2020 - 2021 (1 year)
Remote
  • Liaised with the Italian team to design and develop two web-based advertising platforms to enhance its campaigns in Brazil.

  • Offered solutions and guidance for SEO optimizations on the new platforms to improve visibility and user traffic.

  • Designed and implemented responsive and pixel-perfect web solutions on the project.

Composify
Composify
Senior Front-end Developer
2020 - 2021 (1 year)
Remote
  • Provided end-to-end design and implemented new features on Composify, a social network platform for music composers in Brazil.

  • Worked on the admin portal for the platform using React.js components and GraphQL.

  • Built a new landing page for the website and released the mobile application with animations and a music player functionality.

Prodígio Educação
Prodígio Educação
Front-end Developer
2018 - 2021 (3 years)
Rio de Janeiro, Brazil
  • Designed and developed a complete educational platform with features to improve the learning experience.

  • Delivered the web components library on the platform, executed E2E tests, and made performance improvements.

  • Implemented the complete checkout system on the platform with a cart, shipping options, and payment systems.

Freelance
Freelance
WordPress Developer
2015 - 2017 (2 years)
Rio de Janeiro, Brazil
  • Designed and implemented the WordPress-based "Series Online VIP" website with over 100K visits per day.

  • Implemented new solutions to maintain the website.

  • Fixed bugs and defects to improve user experience.

Showcase

Senior Full-stack Developer - PayPal
Senior Full-stack Developer - PayPal
  • Migrated the legacy application to React.

  • Contributed performance improvements to the checkout process.

  • Participated in developing the next Paypal checkout iteration.

Senior Front-end Developer - Composify
Senior Front-end Developer - Composify
  • Composify is a social network platform connecting songwriters, artists, and music fans.

  • It delivers a mobile app and landing pages as part of its development.

  • Composify executed SEO optimizations to enhance visibility.

Senior Front-end Developer - Sistema Prodígio de Ensino
Senior Front-end Developer - Sistema Prodígio de Ensino
  • Developed and implemented educational platforms and admin systems.

  • Created a new web components library.

  • Improved performance on existing solutions.

Education

Bachelor's Degree, Computer Science
Bachelor's Degree, Computer Science
Cruzeiro do Sul University - Brazil
2019 - 2024 (5 years)