Jonas G.

Back-end and Systems Engineer

Full Stack Developer
1/1/2021 - 9/1/2021

Developed comprehensive skills in building both front-end and back-end systems, along with contributing significantly to the development of prototypes. Focused on creating an optimal user experience by adhering to good development practices, including rigorous code reviews, clean code standards, design patterns, and Test-Driven Development (TDD).

Mobile Developer
8/1/2023 - 10/1/2023

Contributed to the development of a mobile application utilizing React Native, with emphasis on JavaScript and Hooks. Demonstrated proficiency in managing data through SQLite.

Senior Front-end Developer
8/1/2023 - Present

Led front-end development efforts with a focus on utilizing React.js, Node.js, and JavaScript. Enhanced project scalability and maintainability through the implementation of microfrontend architecture. Ensured robust and reliable code by incorporating Jest for testing, demonstrating expertise in both modern front-end frameworks and testing methodologies.

Front End Specialist | Software Developer
8/1/2021 - 8/1/2023

In the role of a front-end specialist, developed proficiency in creating visually appealing and highly functional user interfaces. Engaged closely with the UX design team and back-end developers to ensure seamless integration and optimal performance. Utilized expertise in React, Angular, HTML, CSS, and JavaScript to translate design concepts into dynamic and interactive web pages. Enhanced user experience through the implementation of responsive design principles and adherence to best practices in front-end development.

Front End Development Specialist
8/1/2021 - 8/1/2023

As a front-end developer, the primary responsibility involved creating attractive and functional interfaces for users in collaboration with the UX design team and back-end developers. Utilizing skills in React, Angular, HTML, CSS, and JavaScript, concepts and designs were transformed into interactive web pages.

Key accomplishments included the standardization of reusable components, which maintained a consistent standard in projects and reduced user experience issues. This initiative ensured all developers could use the same components without concerns about colors or design consistency. Additionally, the components were simplified to be accessible for developers at all levels—from junior to senior.

Performance was significantly increased to handle an application with over 1 million monthly users effectively. Development time for application screens was cut from approximately three days to a maximum of 1.5 days. Positive customer feedback highlighted the improvements in the interface, and there was an 18% reduction in technical support calls, reflecting enhanced user experience and product quality.

Full-stack Developer / Front End and Back End
12/1/2013 - 2/1/2019

Developed and maintained comprehensive systems encompassing both server-side and client-side functionalities. Gained proficiency in various programming languages and frameworks including JavaScript, Node.js, React, and Angular. Demonstrated expertise in back-end development using technologies such as Express.js and MongoDB. Employed RESTful APIs and GraphQL for efficient data communication between client and server. Leveraged version control systems like Git to ensure collaborative and efficient code maintenance.

Excelled in database management, utilizing PostgreSQL and MySQL for structured data storage, and MongoDB for NoSQL database implementations. Mastered the use of containerization tools such as Docker and orchestration with Kubernetes for streamlined deployment and scalability of applications. Integrated CI/CD pipelines using Jenkins and GitHub Actions, ensuring continuous integration and delivery of high-quality software.

Utilized cloud platforms including AWS and Azure for hosting and deploying applications, managing server instances, and leveraging cloud services. Prioritized security best practices, implementing OAuth, JWT, and other authentication methods. Employed TDD principles and used testing frameworks like Jest and Mocha to ensure robust and error-free code. Enhanced user experience through responsive design techniques and front-end optimization strategies. Collaborated effectively within Agile teams, participating in sprints, code reviews, and pair programming sessions to optimize development processes and deliver efficient software solutions.

Systems Development Analyst at IPAD - CENED
2013 - 2014

Certificate - SL - Orizon at Orizon
8/1/2022

Customer experience at Alura
9/1/2021