Enhanced the efficiency and scalability of the telephony platform, resulting in significant cost savings and improved call quality, successfully managing a high volume of daily calls.• Developed and maintained end-to-end software products with an emphasis on telephony platform services using TypeScript, React, Node.js, PostgreSQL, Docker, RabbitMQ, FreeSWITCH, and Kamailio.• Created a user interface using React to parse users' IVR flows into FreeSWITCH dialplan code.• Implemented an end-to-end conference call feature utilizing FreeSWITCH's mod_conference module.• Engineered a highly accurate voicemail detection system using neural networks, reducing costs associated with third-party suppliers by integrating the solution into FreeSWITCH as a new module.• Developed a WebRTC monitoring system to monitor the quality of calls in real-time using the WebRTC Stats API.• Scaled the platform across multiple FreeSWITCH instances, handling over 5 million calls per day.

Developed innovative algorithmic solutions that significantly improved the efficiency and sustainability of logistics operations, contributing to reduced environmental impact and enhanced operational performance.• Conducted research on efficient algorithms for combinatorial optimization problems with a focus on green logistics and the Vehicle Routing Problem.• Analyzed various combinatorial optimization techniques, including genetic algorithms, GRASP, ILS, simulated annealing, and ant colony optimization.• Evaluated the performance of these algorithms in terms of energy consumption and overall routing costs saving.• Developed new algorithmic approaches to optimize routing and scheduling in logistics networks, aiming to reduce fuel usage and greenhouse gas emissions.• Implemented simulation models to test and validate the proposed algorithms under different scenarios and constraints.• Collaborated with industry experts to understand practical challenges and incorporate real-world considerations into the research.

Delivered a robust and user-friendly mobile application with efficient backend support, resulting in a seamless and engaging user experience for Qranio app users.• Developed REST APIs using PHP and MySQL to serve the Qranio mobile application.• Created graphical interfaces with HTML, CSS, and JavaScript to enhance user experience.• Ensured seamless integration between the mobile application and backend services through efficient API design.• Implemented security measures to protect user data and ensure API reliability.• Optimized database queries and API endpoints for improved performance and reduced response times.

Líder da equipe de desenvolvimento de projetos.

Pesquisa de metodologias, ferramentas e frameworks para o desenvolvimento de software web/mobile; implantação de sistema web interno com Laravel.