Guilherme C.

Back-end and Systems Engineer

Mid-Level Systems Analyst
6/1/2022 - Present

Analyzed and developed comprehensive financial systems, with a particular focus on investment platforms and digital wallets. Gained expertise in PHP, Java, and Python for backend development. Utilized frameworks such as Spring and Django to streamline application architecture. Leveraged front-end technologies including React.js and Angular for enhanced user interface design. Implemented robust database solutions using PostgreSQL and MongoDB to manage financial data. Employed RESTful APIs to enable seamless integration with third-party services. Utilized version control systems like Git for collaborative code maintenance and implemented continuous integration and deployment (CI/CD) pipelines using Jenkins and Docker. Ensured data security and compliance with industry standards by employing best practices in encryption and user authentication. Conducted performance optimization and load testing to ensure system reliability and scalability in handling large volumes of transactions. Collaborated closely with cross-functional teams to translate business requirements into technical solutions, resulting in improved efficiency and user satisfaction.

Mid-Level Developer
9/1/2021 - Present

Developed expertise in analysis and requirement gathering, coupled with a proficiency in system programming using .NET language (C#). Acquired substantial knowledge in ERP systems and UML, alongside a strong foundation in Object-Oriented programming principles. Demonstrated competency with .NET Core and adhered to SOLID principles in coding practices. Designed and implemented microservices architecture, with a focus on creating unit tests (TDD) and integrated tests to ensure robust solutions. Gained hands-on experience with both SQL and NoSQL databases, and employed Agile methodologies to manage and deliver projects efficiently.

Freelance Developer
6/1/2021 - Present

Handled project requirements and implemented necessary adjustments within a dynamic maintenance team. Developed proficiency in PHP and leveraged frameworks such as Doctrine and Silex. Gained extensive experience working with front-end technologies like Ext JS 4.2, NodeJS, and Vue.js. Demonstrated strong capabilities in managing and querying databases using PostgreSQL and MongoDB. Ensured efficient collaborative code maintenance through version control systems SVN and Git, maintaining high code quality and seamless integration across projects.

Junior Developer
1/1/2020 - 8/1/2021

Developed and maintained web applications, focusing on client-specific needs. Contributed significantly to a national ERP project, integrating complex financial systems. Gained extensive proficiency in frontend frameworks such as Angular and React, and backend technologies including Node.js and Python. Enhanced database management skills with PostgreSQL and MySQL. Utilized version control systems like Git for collaborative coding efforts. Applied continuous integration and deployment (CI/CD) practices to streamline development workflows. Employed cloud services, such as AWS, to optimize application performance and scalability. Ensured robust application security through regular code reviews and adherence to best practices. Developed expertise in API development and third-party service integrations, contributing to seamless financial system operations within the ERP project.

Analysis and Development of Systems at Grand River University
2019 - 2021