Aleff C.

Mobile Engineer - iOS

Senior Mobile Developer
8/1/2023 - Present

Rendered technical expertise in resolving mobile application problems and spearheading development of new technologies to support multi-tenancy services. Developed a strong proficiency in mobile platforms and associated frameworks. Implemented solutions that improved app performance and usability, using languages such as Swift, Kotlin, and React Native. Enhanced backend systems employing Node.js and Django, and optimized data storage mechanisms through PostgreSQL and MongoDB. Ensured code quality and collaborative development using Git. Conducted rigorous testing and debugging processes to ensure robust and reliable mobile applications. Contributed to the overall strategy for technology stack enhancements and multi-tenancy architecture to support company operations efficiently.

Mobile Developer
3/1/2022 - 3/1/2023

Developed proficiency in mobile development for both Android and iOS platforms, utilizing native languages Kotlin and Swift. Leveraged version control systems with expertise in GIT to maintain collaborative code integrity. Demonstrated strong testing skills through the use of JUnit for implementing unit tests to ensure code reliability. Managed manual deployment processes for both Google Play Store and Apple App Store.

Software Developer Intern
10/1/2019 - 4/30/2020

Led the development of an application designed to assist visually impaired individuals by reading books via a camera and returning the read text in an accessible format. Utilized Python and OpenCV for image processing and real-time text recognition. Integrated Tesseract OCR for high accuracy in text extraction from book pages. Employed TensorFlow and deep learning models to enhance the precision of text detection. Implemented Android development skills to create a user-friendly mobile interface, enabling seamless interaction with the application. Leveraged REST APIs to connect the mobile app with cloud-based services for processing and storing data. Conducted extensive testing and debugging using tools such as JUnit and Espresso to ensure robustness and reliability. Demonstrated continuous integration and deployment practices using Jenkins and Docker. Facilitated project management and team collaboration through Agile methodologies and tools like Jira and Confluence.

Software Developer - React/React Native
1/1/2019 - 10/31/2019

Developed proficiency in React, focusing on building dynamic and responsive user interfaces for a large-scale educational platform. Extensively worked with Redux for state management, optimizing application performance and ensuring seamless data flow. Demonstrated expertise in JavaScript (ES6+), HTML5, and CSS3, implementing complex front-end features and integrating RESTful APIs for robust functionality. Employed modern web development tools and frameworks such as Webpack and Babel to enhance development efficiency and code modularity. Utilized Git for version control, enabling efficient collaborative workflows and streamlined code maintenance. Consistently adhered to best practices in web development, including responsive design principles and cross-browser compatibility, ensuring a high-quality user experience across various devices and platforms.

Mobile Developer
5/1/2018 - 4/30/2019

As a Mobile Developer with expertise in React Native, achieved significant milestones in the development of mobile applications while providing services for a notable educational platform. Specialized in building robust and scalable mobile interfaces, leveraging the power of React Native to deliver high-quality user experiences. Employed advanced JavaScript and TypeScript skills to ensure seamless integration and performance. Demonstrated proficiency in managing state through Redux, enabling efficient data flow and application scalability. Utilized RESTful APIs and GraphQL for smooth backend communication, facilitating real-time data updates and synchronization. Championed the adoption of agile methodologies, actively participating in sprint planning, code reviews, and collaborative problem-solving sessions. Gained extensive experience with cross-platform development, ensuring optimal performance and consistency across both iOS and Android devices. The technical expertise developed includes continuous integration and deployment (CI/CD) pipelines using tools such as Jenkins and CircleCI, enhancing the deployment processes and reducing downtime. Contributed to automated testing frameworks using Jest and Detox, assuring code reliability and functionality. The role also enhanced skills in version control via Git and collaboration within a distributed team using tools like Jira and Confluence. This resulted in the delivery of a highly functional mobile application, significantly improving user engagement and satisfaction.

Android Developer - Home Office
5/1/2016 - 9/30/2016

Contributed to the development of the Foregon app version 1.0, showcasing technical expertise in mobile application development. Focused on using Swift for iOS and Kotlin for Android. Built and implemented RESTful APIs to ensure seamless communication between the app and server. Employed Firebase for real-time database functionalities, analytics, and user authentication processes. Leveraged various tools and frameworks such as Alamofire for networking, Realm for local database storage, and Retrofit for API requests. Addressed and resolved performance issues through rigorous testing with XCTest and Espresso frameworks. Ensured code quality and collaborative development using version control systems such as Git.

Intern/Junior
4/1/2015 - 5/31/2016

Engaged in the development of the Vagalume 2.0 app, demonstrating strong technical expertise in mobile app development. Proficient in various tools and frameworks essential for the project, leading to successful enhancements and optimizations. Additionally, initiated the Foregon project, showcasing the ability to start and manage new software development projects. Developed key skills in programming languages, framework integration, and collaborative tool usage throughout these projects.

Biomedical Informatics at University of São Paulo
2018 - 2023

Hardware and Software Engineering at Pontifical Catholic University of Campinas
2011 - 2016