Willian G.
Front-end UX Engineer

Skills

Node.js

React Native

Javascript

React

Willian is available for hire

Hire Willian G.

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Bio

React specialist with over four years of experience in front-end development and app creation, possessing a robust portfolio that spans projects such as e-commerce sites, marketplaces, security systems, and customer data dashboards. Engaged in notable roles within the largest pharmacy chain in Latin America, the financial market sector, and various local startups focused on security and fraud prevention.

Proficient in technologies including React JS, React Native, TypeScript, and Test Driven Development (TDD) with Jest. Demonstrated expertise in Next.js, Google Ad Manager, tag management, SEO, and Agile methodologies like Scrum and Kanban. Skilled in working with GraphQL and REST APIs, and proficient in version control using Git and GitLab, as well as Continuous Integration/Continuous Deployment (CI/CD) practices.

Additional responsibilities have encompassed the production of documentation, project architecture design, code review, integration with Google services, and fostering and mentoring junior developers.

Senior React Developer
11/1/2023 - Present

Specialized in front-end and mobile development within the e-commerce and marketplace domain of a large company. Acquired advanced skills in HTML, CSS, and JavaScript with a strong proficiency in React.js and Angular. Developed mobile applications using React Native and Swift, ensuring cross-platform compatibility and high performance. Leveraged RESTful APIs and GraphQL to integrate complex backend services. Utilized Redux for state management and implemented responsive design principles to enhance user experience on various devices. Proficient in automated testing using Jest and Enzyme, and employed continuous integration/continuous deployment (CI/CD) pipelines with Jenkins and Docker to streamline development workflows. Demonstrated competency in using version control systems such as Git and conducted code reviews to maintain code quality.
Systems Analyst PL
12/1/2022 - 5/1/2023

Worked extensively on a project aimed at informing, representing, self-regulating, and educating the Brazilian financial market. Developed scalable components using React.js and maintained a platform that aggregates data on financial market assets. Played a key role in mentoring junior developers and contributing to the design and Front End architecture. Managed staging and production environments and handled complex dynamic links and routes with Next.js. Demonstrated proficiency in React.js, TypeScript, TDD (using Jest), and Next.js. Applied skills in tagging with Google, creating and managing REST APIs, and ensuring code quality through Git versioning. Contributed to the CI/CD pipeline and participated in thorough code reviews. Assisted in the training and skill development of junior developers.
Partner Owner
4/1/2022 - Present

Gained extensive experience in the development and management of websites and mobile applications for various companies and local projects. Cultivated strong technical expertise in languages such as HTML, CSS, JavaScript, and PHP, along with proficiency in frameworks like React, Angular, and Laravel. Leveraged databases including MySQL and PostgreSQL to ensure robust data management and integration. Utilized tools such as Docker and Kubernetes for containerization and orchestration, enhancing deployment efficiency and scalability. Employed version control systems such as Git for collaborative code maintenance and project management, adhering to best practices in continuous integration and continuous deployment (CI/CD). Demonstrated capabilities in user experience (UX) design and user interface (UI) development, delivering intuitive and responsive solutions.
React Developer
10/2/2020 - 12/1/2022

Developed scalable components using React.js and contributed to the development of mobile applications for a leading pharmacy network in Latin America using React Native. Integrated and modeled Google Ad Manager ads onto websites, managed ad inventory and billing on the Google platform, and oversaw the development, staging, and production environments. Standardized development processes and conducted SEO optimizations, along with the development of Unit Tests and Storybooks. Worked extensively with TypeScript, TDD using Jest, GraphQL, and REST APIs. Ensured collaborative code maintenance and deployment via Git and GitLab, and implemented CI/CD pipelines. Additionally, produced comprehensive documentation, conducted code reviews, and facilitated seamless integration with Google systems.