Cassio Souza

Working on media delivery and transcoding;

• Migrated transcoding stack to a newer library (From deprecated GMF to an in-house solution using C++);
• Implemented audio muxing and syncing.
• Main technologies: Golang, Kubernetes, FFmpeg, C++, RESTful services, Websockets, PostgreSQL, SingleStore, Google Cloud Platform, Microservices Architecture.

At Arcules, I worked as a Senior backend developer, specializing in media delivery and transcoding of video and audio. Spearheaded many initiatives, including implementing audio playback, a microservice for the management of device firmware versions and updates for video cameras, and integrations with third-party systems.

Improved performance of database operations by adopting a new persistence model;

• Developed new tooling for local testing;
• Developed tools for support agents;
• Was the main point of contact for troubleshooting and on integration with phone carriers (As a call tracking platform, carrier integration is the backbone of the system);
• Main technologies: C#/.NET, elasticsearch, Kibana, Helm, Python, Aerospike, Redis, Amazon Web Services.

At Ringba, I wore many hats, working mainly as a Senior Developer focusing on media (audio, mainly) and carrier partner integrations, but also as a Senior Support Engineer, handling level 3 support demands that required more in-depth investigations, weekly meetings with carrier partners to discuss API boundaries and carrier support, and disaster mitigation and recovery.

Helped on the development of systems for the brazillian ministry of agriculture, most from scratch;

• Directly responsible for the architecture and implementation of the testing framework for one of these systems;
• Was lead developer on a legal document processing system for a major Brazillian carrier. Used C++ (OpenCV, MuPDF) and Python (Flask, Tensorflow and NginX with mod_wsgi);
• Worked on many projects and technologies, Including: Java, Python, C++, Weblogic, JSP, Flask, OpenCV, MuPDF API, Tensorflow, NginX, Docker, PostgreSQL, Oracle Database Server, SQLite.

At Ringba, I worked in a “software factory” were I could use my diverse background in many environments to quickly move between projects, helping achive tight deadlines for delivery. At most projects I was the one responsible for implementing a foundational background for unit testing, and as Tech Lead my main goal was delivering high-quality software, achiveved mostly through thorough automated testing, and implementing many safeguards to improve signal-to-noise ratio in code reviews.