Weldson A.

Full-stack Product Engineer

Mid-Level Technology Analyst
10/1/2022 - Present

Worked as a fullstack developer on the development of a platform utilizing React and Node.js technologies. Demonstrated expertise in modern JavaScript frameworks and libraries, particularly React for building dynamic user interfaces and Node.js for server-side development. Delivered high-quality code and optimized performance for seamless user experiences. Employed best practices for code structure, state management, and asynchronous operations. Contributed to system architecture and design, resulting in a scalable and maintainable platform.

Research Software Engineer
9/1/2021 - 7/1/2022

Developed critical features for existing services, focusing on enhancing functionality and user experience. Engaged in research initiatives to identify and implement innovative solutions to complex company challenges. Acquired proficiency in using contemporary tools and frameworks integral to the company's technology stack, ensuring the continuous evolution of service capabilities.

Backend Developer
3/2/2020 - Present

Gained extensive experience in backend development with a particular focus on the Django framework. Developed and maintained robust, scalable, and secure web applications. Achieved proficiency in Python programming and leveraged Django ORM for database operations. Utilized Django REST framework to build and maintain RESTful APIs, ensuring efficient data exchange between client and server. Integrated various third-party services and APIs to enhance application functionality.

Demonstrated expertise in working with relational databases like PostgreSQL and MySQL, optimizing queries for performance and ensuring data integrity. Implemented various caching strategies using Redis and Memcached to improve application performance and reduce server load. Developed asynchronous tasks and job queues with Celery for background processing and task scheduling.

Ensured high code quality and maintainability by writing comprehensive unit and integration tests using frameworks such as PyTest and Django test suite. Employed continuous integration and continuous deployment (CI/CD) pipelines using Jenkins and GitLab CI, streamlining the development workflow and ensuring rapid deployment cycles.

Collaborated effectively within Agile development teams, participating actively in sprint planning, code reviews, and pair programming sessions. Utilized version control systems, particularly Git and GitHub, to manage codebases and facilitate collaborative development. Enhanced project documentation and created knowledge-sharing sessions to onboard new developers and disseminate technical know-how.

Secured the applications through best practices in authentication, authorization, and data protection, incorporating mechanisms like OAuth2, JWT, and SSL/TLS protocols. Optimized the performance of applications by tuning database queries, employing content delivery networks (CDNs), and implementing rate limiting and load balancing techniques.

Developer and Researcher
4/2/2019 - 3/2/2020

Gained extensive experience in applying machine learning techniques for knowledge extraction from databases. Currently developing a system for displaying reports. Acquired skills in data analysis, data preprocessing, feature selection, and model training. Utilized programming languages such as Python and R for developing machine learning algorithms. Leveraged frameworks and libraries including TensorFlow, Keras, and scikit-learn for building and optimizing models. Gained proficiency in SQL for database interaction and data extraction. Demonstrated capabilities in creating visualization reports using tools like Tableau and Power BI. Ensured effective collaboration and version control using Git.

Information Technology Analyst I
11/2/2017 - 2/2/2018

Gained substantial experience in developing and maintaining Java applications with a strong emphasis on Angular for frontend development. Worked on system analysis and modeling to design new system architectures while ensuring the seamless operation of existing systems. Acquired expertise in Java and Angular frameworks, leveraging advanced techniques to enhance application performance and user experience. Consistently utilized version control systems like Git for collaborative code maintenance, ensuring high-quality code through continuous integration and deployment practices.

Computer Science at Federal University of Maranhão
2018 - 2020

Integrated Research Management Platform (PublicaUFMA) at Universidade Federal do Maranhão
4/2/2018

Lean Startup - From a Napkin Idea to a Startup at Universidade Federal do Maranhão
10/2/2016