Backend Software Engineer | Go · Kafka · AWS | Pagamentos & Antifraude @ Dock Tech

I'm a Backend Software Engineer at Dock Tech, where I build high-performance systems for the payments and fraud prevention domain.

I work on backend systems that handle high transaction volumes across payments and fraud prevention products, focusing on reliability and low latency. Go is my primary language, and I operate across the full development cycle — from solution design to production deploy.

Before moving into software engineering, I spent several years as a QA Engineer. That background gives me a practical edge: I think about reliability, observability, and edge cases from the start, not as an afterthought.

Backend

Data & Messaging

Infrastructure & Cloud

🏦 Dock | Software Engineer – Aug 2025 to Present

• Backend development of high-performance APIs and microservices in Go
• Transaction gateway integrating the payment intake layer with the fraud prevention system
• Full cycle ownership: solution design, implementation, testing and production deploy
• Stack: Go, Kafka, PostgreSQL, Redis, Docker, Kubernetes, AWS, Lambda

🏦 Dock | QA Engineer – 2020 to 2025

• Automated test frameworks with Cypress, Ruby (HTTParty), Playwright, Java, Protractor
• Performance testing using K6; API testing with Postman
• Built automation projects end-to-end, from zero
• Bug tracking and monitoring with Jira, Zephyr Scale, Datadog, Kibana

🎓 UFPB | Java Developer at SIGAA

• Academic system development using Java, JSF, Hibernate, PostgreSQL

🔬 LUMO | Volunteer Researcher

• Urban event monitoring via vehicular community networks

• ✅ CTFL – ISTQB Certified Tester Foundation Level
• 📊 Project Management Fundamentals
• 📌 Kanban Fundamentals

AI-Driven Acceptance Testing: First Insights Exploring the Educational Potential for Test Analysts (Academic publication exploring how AI can assist test analysts in learning and productivity.)

🎓 Federal Institute of Paraíba (IFPB) Master's Degree in IT January 2026 – Present João Pessoa – Paraíba – Brazil

🎓 Federal University of Paraíba (UFPB) Bachelor's Degree in Computer Science January 2018 – December 2023 João Pessoa – Paraíba – Brazil

• 🇧🇷 Portuguese – Native
• 🇺🇸 English – Full professional proficiency

Most of my work lives in private repositories at Dock Tech. What you'll find here are personal and study projects.

📧 caiojdlmaia@gmail.com 📍 João Pessoa – Paraíba – Brazil 🔗 LinkedIn | GitHub

"Good software is not just about making things work — it's about making them work reliably."