Matheus Fernandes

Software Engineer

Software Engineer working on a lead generation platform for a global enterprise client, focusing on API automation, webhook-based data ingestion, and system observability.

• Designed and maintained webhook-based ingestion pipelines handling high-volume lead data from multiple social media platforms.
• Implemented automated REST API testing using Postman and JavaScript, reducing regression issues and improving release confidence.
• Performed data validation and integrity checks to ensure accuracy across distributed systems.
• Monitored production systems using Datadog (logs, metrics, dashboards), enabling faster anomaly detection and incident response.
• Improved system observability and contributed to performance and reliability enhancements in production environments.
• Participated in code reviews (Pull Requests), promoting clean code, consistency, and best practices.
• Collaborated in an Agile/Scrum workflow with a small engineering team.
• Continuously improved API reliability, data quality, and overall system robustness.
• Stacks used: Java, JavaScript, REST APIs, Webhooks, Postman, Datadog.

Software Engineer

Engineered backend, testing, and automation solutions for a high-throughput financial platform processing millions of transactions per day.

• Improved reliability and performance across distributed microservices handling high-volume financial data.
• Designed and maintained GitHub Actions pipelines, reducing CI/CD execution time and improving deployment reliability.
• Created Python and Robot Framework test tooling adopted across multiple teams, reducing regression cycle time and increasing developer throughput.
• Developed Kafka-based applications using Avro schemas for serialization and validation across services.
• Led automation and integration initiatives across microservice ecosystems, improving coverage and reducing manual QA workload.
• Collaborated with platform, SRE, and application teams to deliver mission-critical features.
• Implemented contract-testing prototypes using Pact and GitHub Actions.
• Stacks used: Python, Java, Kafka, Docker, Kubernetes (EKS), AWS (EC2/EKS), TestNG, Robot Framework, GitHub Actions, ArgoCD.

Software Development Engineer in Test

Built test automation suites and testing infrastructure for enterprise systems, focusing on reliability and maintainability.

• Developed automated regression tests using Robot Framework.
• Implemented image-based testing for legacy Delphi systems using Python (PyAutoGUI + Pillow).
• Provisioned test environments using Ansible on OpenStack and integrated them with GitLab CI.

Software QA Engineer

Performed QA engineering and test automation for large-scale enterprise systems.

• Developed automated tests using Selenium (Java), Appium, and Cypress.
• Worked in Scrum/Kanban workflows ensuring system quality and delivery.

Graphic Designer

Co-founded a small design studio focused on branding, visual identity, and marketing materials.

Student Internship

Digitized and registered court case documents for the Federal District Court of Justice.

Universidade Católica de Brasília

Harvard University — CS50

Senac DF

CHIP-8 Emulator

Implemented a full CHIP-8 virtual machine in Python including opcode decoding, keypad mapping, timers, and pixel buffer rendering.

Tiny Renderer

Educational C++ software renderer implementing OpenGL fundamentals such as barycentric coordinates and z-buffering.

SerenityOS Contributions

Contributed to SerenityOS, a hobbyist OS written in C++. Learned OS internals, memory systems, and low-level development through real contributions.

Retro Snake

Classic Snake clone implemented in JavaScript for modern browsers.

Tideman

Implementation of the Tideman ranked-pairs voting algorithm in C.

EFSET English Certificate 84/100 (C2 Proficient)