Kalleu H.
Front-end UX Engineer

Skills

Bootstrap

Cascading Style Sheets

Sass

Github

Html

Javascript

Php

Amazon Aws

Google Cloud

React

Kalleu is available for hire

Hire Kalleu H.

All Howdy Candidates are vetted for skills and english proficiency.

Bio

Bachelor of Information Systems from Universidade Vale do Rio Doce (Univale) with over five years of experience as a Frontend Engineer, specializing in developing solutions using JavaScript, ReactJS, HTML, and CSS. Exhibits a robust interest in JavaScript with a primary focus on front-end development, particularly within the React ecosystem. Demonstrates technical proficiency in JavaScript, TypeScript, React, React-Query, Styled-Components (CSS-in-JS), Jest, React Testing Library, Storybook, and Git.

Front-end Engineer
9/1/2021 - Present

Maintained and developed new features for applications, structuring architectures that support scalable, multiplatform solutions. Automated processes in the post-sales squad to enhance customer access to services. Developed applications using React, JavaScript, and TypeScript, ensuring robust unit testing with Jest and React Testing Library, and e2e testing with Cypress. Utilized Datadog and Kibana for metrics and logs management. Built scalable applications following Clean Architecture principles and facilitated deployment through a CI/CD pipeline. Ensured collaborative development and version control using GitHub and Gitflow.
Front End Developer
9/2/2020 - Present

Acquired expertise in front-end development, specializing in crafting tailored solutions for diverse industry segments. Proficient in HTML5, CSS3, and JavaScript, with extensive experience in frameworks such as React.js, Angular, and Vue.js. Utilized Redux for state management and ensured responsive design implementation with frameworks like Bootstrap and Foundation. Leveraged version control tools like Git for collaborative code maintenance and workflow management. Additionally, implemented unit and integration testing using tools such as Jest and Cypress to ensure code reliability and performance. Focused on optimizing web applications for maximum speed and scalability while adhering to best practices in web standards and accessibility.
Front-End Developer
2/2/2019 - 9/2/2020

Developed proficiency in WordPress platform with a focus on front-end development. Exhibited strong skills in HTML, CSS, and JavaScript to create and customize themes and plugins. Gained extensive experience in responsive design to ensure compatibility across various devices and browsers. Worked with frameworks such as Bootstrap and Tailwind CSS to streamline the development process. Utilized tools like Git for version control and Adobe Photoshop for graphic design tasks. Implemented best practices for SEO optimization and enhanced website performance through caching and code optimization techniques. Presented capabilities in debugging and troubleshooting using Chrome Developer Tools and other diagnostic tools.
Technical Support Analyst
3/2/2018 - 2/2/2019

Developed proficiency in PHP, Doctrine, and Silex. Extensive work on Ext JS 4.2, NodeJS, and Vue.js. Demonstrated skills in PostgreSQL and MongoDB. Ensured collaborative code maintenance using SVN and Git.

Acquired significant expertise in building and optimizing RESTful services using NodeJS and Express. Developed and maintained interactive front-end applications utilizing React.js and Angular. Gained experience in using Docker for containerized application deployment and Kubernetes for orchestration. Implemented CI/CD pipelines employing Jenkins and GitLab CI.

Mastered software development methodologies, including Agile and Scrum, to drive continuous improvement and efficient project delivery. Employed JIRA for tracking project progress and Confluence for documentation purposes. Leveraged AWS services such as EC2, S3, and Lambda for scalable and cost-effective computing solutions.

Cultivated strong database management skills in SQL and NoSQL environments, including MySQL, Oracle, and Cassandra. Advanced knowledge in data modeling, performance tuning, and security best practices. Played a pivotal role in migrating legacy systems to modern architectures, ensuring minimal downtime and data integrity.

Focused on quality assurance and automated testing frameworks like Selenium and Jest, enhancing software reliability and performance. Collaborated effectively with cross-functional teams to design and implement solutions aligned with business objectives. Utilized RESTful APIs and GraphQL for seamless data integration and retrieval.

Applied principles of cybersecurity to protect sensitive information, implementing encryption standards and monitoring for vulnerabilities. Contributed to open-source projects and maintained a personal repository of code samples demonstrating technical capabilities and innovative problem-solving strategies.