~$ whoami

Luciano Guimarães Porto

Senior Backend Engineer · Málaga, Spain

Senior Backend Engineer with 10+ years of experience building Java-based systems for mission-critical fintech, payments, and high-throughput platforms. Hands-on across the payment lifecycle: high-volume batch processing, SEPA, credit card flows and Brazilian instant-payment ecosystems. Strong in event-driven architecture (Kafka, SQS), non-blocking systems (Vert.x), public REST APIs and cloud-native deployments on AWS and GCP.

lucianoguimaraesp@protonmail.com LinkedIn

~$ ls highlights/

• Business growth & market expansion Contributed to the technical delivery and launch of three LeoVegas Group brands (BetMGM Brazil, BetUK, gogocasino). The nine-brand portfolio now generates over 25% of group revenue.
• Engineering productivity Introduced ephemeral development environments at BPI France and LeoVegas Group, accelerating delivery by an estimated 30%.
• High-throughput betting core Work on the event-driven sportsbook platform processing 30M+ sports-event messages and 820K+ bets per day.
• AI-assisted engineering Designed and championed an internal workflow hub connecting system flows, specs, CI/CD and Claude-powered skills over the company MCP infrastructure, now adopted by two of six Betting teams.

~$ git log --career

1. Senior Backend Engineer @ LeoVegas Group

   Jul 2025 — Present

   Málaga, Spain · High-throughput online gaming platform serving regulated European markets

   • Build backend services in Java and Vert.x with non-blocking I/O for high-concurrency, real-money transaction flows.
   • Contribute to bet placement, settlement and notification flows, event-driven via Apache Kafka.
   • Integrate sports trading feeds with resilient consumers that degrade gracefully under provider outages.
   • Operate workloads on AWS (EKS, RDS, S3) and contribute to the ongoing migration to GCP.

2. Software Engineer @ Apside Portugal (client: BPI France)

   May 2024 — Jun 2025

   Remote (Portugal / France) · French retail banking platform

   • Delivered backend and frontend features, integrating with external microservices via Kafka.
   • Introduced TDD at task-planning stage and drove adoption across teams.
   • Built Playwright E2E coverage in CI/CD.

3. Full Stack Developer @ KLx (client: Crédit Agricole Payment Services)

   Mar 2023 — May 2024

   Lisbon, Portugal · Mission-critical payment processing (batch, credit card, SEPA)

   • Owned Spring Batch jobs at the core of the payment pipeline; refactored legacy components for fault tolerance and throughput.
   • Migrated the team from manual delivery to CI/CD with Jenkins, GitLab CI/CD and JFrog.

4. Full Stack Developer @ JobDeploy (client: Siemens)

   Jun 2022 — Mar 2023

   Lisbon, Portugal · Industrial software product

   • Delivered Java services (EJB, Hibernate, JAX-RS) and Angular features; owned production releases.

5. Technical Leader / Full Stack Developer @ Capgemini (client: Crédit Agricole CIB)

   Jul 2021 — Jul 2022

   Lisbon, Portugal · SSO platform for corporate and investment banking

   • Led architecture and delivery of a Single Sign-On platform built from scratch; team of six.
   • Defined standards, ran code reviews and hiring interviews; owned the Docker/Kubernetes/ArgoCD pipeline.

6. Full Stack Developer @ Sicoob

   Jan 2019 — Apr 2021

   Brasília, Brazil · Banking collections (SisBR / DDA)

   • Re-architected synchronous reporting into an async batch model with EJB and ActiveMQ.
   • Led migration of a legacy frontend from Adobe Flex to Angular.

7. Full Stack Developer @ Ativu Tecnologia

   Sep 2017 — Jan 2019

   Brasília, Brazil

   • Won the Innovation Award for decomposing a monolith into modular deployments using Clean Code and TDD.
   • Taught a two-month internal Java course; two colleagues moved into engineering roles.

8. Java Developer @ CDS — Condomínio de Soluções

   May 2016 — Sep 2017

   Brasília, Brazil · Brazilian Navy J2EE healthcare-control system

   • Resolved code smells and added unit/integration tests with JUnit and Mockito.

~$ cat skills.yml

languages:

[Java 8/11/17, Spring Boot, Spring Batch, Vert.x, Hibernate/JPA, TypeScript, Angular]

architecture:

[Microservices, Event-Driven, REST APIs, Distributed Systems, Reactive I/O, TDD]

messaging_cloud:

[Kafka, AWS SQS, ActiveMQ, AWS (EKS, RDS, S3), GCP, Docker, Kubernetes, ArgoCD]

observability_ci:

[Grafana, Loki, Prometheus, Datadog, Splunk, Jenkins, GitLab CI/CD, SonarQube]

data_testing:

[PostgreSQL, Oracle, MongoDB, Redis, JUnit, Mockito, Cucumber, Playwright]

~$ cat education.txt languages.txt

• B.Sc. Computer Science — UniCEUB, Brasília, Brazil · 2014–2020
• Portuguese (Native) · English (B2) · Spanish (A2) · French (A2)