Ruben Guedes

Backend engineer with close to 3 years of experience building and maintaining distributed PHP microservices at Jumia, one of Africa's largest e-commerce platforms. Day to day, my work spans the full backend stack, from designing REST APIs and event-driven services to cloud deployments and database management, always with a focus on reliability and performance at scale. Beyond writing code, I take genuine interest in the broader product context: how systems grow, how teams make decisions under pressure, and how engineering work creates measurable impact.

I am fluent in English and have worked in an international environment where it is the primary language of communication.

Back End Developer at Jumia Porto Tech Center (2023-11 – Present)

Full-time · Hybrid

• Design, develop and maintain backend PHP microservices powering Jumia's e-commerce platform across multiple African markets.
• Build and integrate RESTful APIs in PHP (Symfony / Laravel) and Java, with a focus on performance, reliability and scalability.
• Implement event-driven communication between distributed services using RabbitMQ and Apache Kafka.
• Containerise and ship services with Docker and support Kubernetes-based orchestration and production deployments.
• Write and optimise MySQL queries, manage schema migrations, and maintain data integrity across services.
• Monitor production performance and service health using New Relic and Grafana.
• Coordinate work and documentation across teams with Jira and Confluence.
• Validate cross-environment behaviour with BrowserStack.
• Collaborate in international, agile cross-functional teams, driving code quality through structured reviews, pull request workflows and CI/CD pipelines.

Operator at Lidl Portugal (2019-07 – 2023-09)

Part-time · On-site

• Delivered consistent customer service in a high-volume retail environment while completing a full-time engineering degree, demonstrating strong time management and reliability.
• Built solid communication skills and the ability to perform consistently under pressure across a 4-year tenure.

Bachelor of Engineering in Computer Systems – Universidade Fernando Pessoa (2023-06)