About me
Biography
Hello, I'm Gabriel. Originally from Málaga, a beautiful coastal city in southern Spain (Andalusia), I have been based in Madrid for the past 12 years. My international experience includes living in the USA (Florida and New York City), where I completed part of my collegiate studies on a scholarship.
Interests
I am a passionate learner with diverse interests. My hobbies include playing guitar and drums, skiing, music production, cooking, and photography. Programming is not just my profession but also a hobby—I constantly explore new technologies and frameworks. You can view my photography portfolio here:
I am an avid maker and technology enthusiast. I maintain my own electronics lab and 3D printer, where I design and build robots and custom hardware solutions, applying the principles from my engineering background.
Open Source & Code
While much of my professional work resides in private corporate repositories, I actively maintain personal projects and Proof of Concepts (POCs) on GitHub. I am continuously publishing new experiments and open-source contributions.
Education
School
1996-2008
San Estanislao de kostka (Málaga)
College
2008-2014
Universidad Pontificia Comillas (Madrid)
Bachelor's Degree in Industrial Engineering (Electronics Specialty)
College (Exchange)
2012-2013
State University of New York at New Paltz (New York)
Bachelor's Degree in Industrial Engineering
Skills
Courses (Finished)
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AZ-204 (udemy)
Associated with Minsait.
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AZ-400 (udemy)
Associated with Minsait.
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AWS system operator
Associated with Minsait.
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Docker (Ibertech)
Associated with Minsait.
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Docker Mastery: with Kubernetes +Swarm from a Docker Captain
Udemy
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Game development with Unity 2017
Udemy
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Junit and mockito complete guide of spring boot (2021)
Udemy
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MongoDB Basics
M001 (Mongo University)
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MongoDb for SQL Pros
M100 (Mongo University)
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The MongoDB Aggregation Framework
M121 (Mongo University)
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Domain driven design (blue and red book of Eric Evans)
Books reading
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Angular framework from 0 to expert
Udemy
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Web design from 0 to expert, HTML and CSS
Udemy
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NGINX Fundamentals: High Performance Servers from Scratch
Udemy
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Cypress: Web Automatization Testing from Zero to Hero
Udemy
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Jenkins: Beginner To Pro
Udemy
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Javascript: de cero hasta los detalles (ES5)
Udemy
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Modern Java - Learn Java 8 Features By coding it
Udemy
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ReactiveX - RxJx: de cero hasta los detalles
Udemy
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NgRx (with NgRx Data) - The Complete Guide (Angular 17)
Udemy
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The nuts and Bolts of Oauth 2.0
Udemy
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Java microservices:CQRS & Event sourcing with kafka
Udemy
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Splunk de cero a experto (From zero to hero)
Udemy
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Openshift 4 (From zero)
Udemy
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Cloud Pub/Sub in action
Google cloud tech
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Spring WebFlux Masterclass: Reactive Microservices
Udemy
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Learn Github Actions for CI/CD DevOps Pipelines
Associated with Minsait.
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Fundations of Google Cloud Platform with practices
Udemy
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Apache Beam | A Hands-On course to build Big data Pipelines
Udemy
Certifications
AZ-204
AZ-400
Favorite books
In my free time, I also enjoy reading software-related books. These are some of my favorites that I believe have been important for my development.
Experience
GFT
May 2024 - Current
Backend Microservices & DevOps Engineer
Played a key role in developing a critical financial adjustments engine for a top-tier German bank, processing high-volume transactions using a reactive microservices architecture.
• High-Performance Backend: Engineered non-blocking microservices with Spring WebFlux, successfully handling thousands of concurrent requests with minimal latency.
• Cloud-Native Scalability: Architected robust event-driven workflows on Google Cloud Platform (Cloud Run, Pub/Sub, Dataflow), ensuring 99.9% uptime and auto-scaling capabilities.
• DevOps Excellence: Streamlined CI/CD pipelines via GitHub Actions and GitOps methodologies, reducing deployment times by 40% while maintaining zero-downtime releases.
Cognizant
Jun 2022 - Apr 2024
Lead Microservices Architect & DevOps (Full Stack)
Spearheaded enterprise architecture transformations for a leading European insurance firm, driving modernization and technical excellence across cross-functional teams.
• Cloud Infrastructure Modernization: Orchestrated a massive zero-downtime migration of 15 critical services from Cloud Foundry to Kubernetes (K8s), reducing infrastructure costs by 20% and improving resource utilization.
• Architecture Refactoring: Successfully uncoupled a complex legacy "distributed monolith" into a highly cohesive, DDD-driven microservices ecosystem, drastically reducing technical debt and team bottlenecks.
• Security & Standardization: Defined and enforced enterprise-wide standards for robust OAuth2 authentication flows, synchronized logging, and resilient microservice patterns.
Minsait
Jan 2022 - Jun 2022
Azure B2C Developer
Executed the end-to-end authentication implementation for a major French insurance company serving millions of users.
• Identity & Access Management: Developed complex user flows (password recovery, MFA, OTP via SMS) using Azure B2C custom policies to enhance platform security.
• Custom Integrations: Engineered secure Azure Functions to seamlessly extend B2C capabilities with custom validation logic.
Oct 2019 - Jun 2022
Microservices Developer & Architect
Spearheaded the architectural design of resilient Java-based backend systems for multi-squad environments.
• Event-Driven Architecture: Designed and scaled robust Spring Boot microservices utilizing asynchronous non-blocking patterns and CQRS.
• Domain Modeling: Applied strict Domain-Driven Design (DDD) principles to drastically improve domain predictability and code maintainability.
Dec 2019 - Jun 2022
DevOps Engineer
Led the automation of delivery pipelines and deployment strategies across enterprise platforms.
• CI/CD Ecosystems: Built comprehensive, fully automated pipelines using Jenkins and Bamboo to drastically cut manual intervention.
• Deployment Standardization: Implemented auto-versioning, secure deployments, and quality gates aligned with rigorous GitFlow strategies.
• Infrastructure Management: Maintained centralized Helm chart repositories to manage deployments across diverse technology stacks.
Nov 2019 - Jun 2022
Cloud Engineer
Directed cloud operations and Kubernetes adoption within Azure-centric environments.
• AKS Infrastructure: Managed and scaled large-scale cloud infrastructure on Azure Kubernetes Service (AKS), incorporating native Azure AD authentication.
• Architecture Modernization: Orchestrated the transition of early-stage architectures and monolithic applications into highly available microservices environments.
Oct 2017 - Jun 2022
Backend Developer
Core backend development for web services and RESTful APIs during the earlier stages of the cloud maturity lifecycle.
• Backend Services: Delivered high-performance APIs and core business logic using Java and the Spring Boot framework.
Tecnatom
Feb 2015 - Oct 2017
Product Development Engineer (Robotics)
Hardware/Software engineering focused on low-level robotics programming and PCB design. Laying a core engineering foundation before transitioning fully to cloud scale software architecture.
Projects
Global Banking Event-Driven Ecosystem
High-impact initiative for a major German Bank's London headquarters. Designed and implemented a scalable accounting adjustment system and a daily financial balance engine (daily/quarterly/yearly analytics).
Architecture based on highly decoupled event-oriented patterns using Google Cloud: Cloud Run, Pub/Sub, Dataflow, Composer, and BigQuery for reporting. Also drove GitOps improvements via GitHub Workflows and targeted frontend enhancements.
Ultrasound Inspection Robot
Autonomous robot designed for ultrasonic inspection of gasoline tank floors. Features Lidar navigation, bidirectional mobility, and computer vision integration.
Electrical Incident Management System
High-reliability software for a major Italian energy company to automate the control and resolution of national electrical grid incidents. Designed the on-premise infrastructure, integrating WebLogic backends with IIS frontends to manage field operations.
Energy Trading Platform
Commercial energy trading product sold to multiple utility companies. Automated platform for purchasing and selling energy in Spanish markets (OMIE/REE). Built on Kubernetes with personalizable security implementation and a robust DevOps infrastructure.
Hospitality Metrics & Billing Platform
Subsystem for calculating and analyzing key hospitality KPIs (RevPAR, ADR, and occupancy) and managing billing processes for a vacation rental company, fully integrated with the Avirato PMS/Channel Manager to support data-driven decision-making.
Implemented reservation exports, real-time reservation boards, and daily statistics summaries. Designed custom user management and authentication/authorization using OAuth2. End-to-end development including backend, frontend, cloud infrastructure, and DevOps automation for deployment pipelines.
Azure B2C Custom Authentication Flow
Engineered complex authentication flows (Login/Register/Reset) integrating OTP SMS, Email customization, Multifactor Authentication (MFA), and Google reCAPTCHA. Leveraged OAuth2 Auth Code flow and Azure Functions middleware.
Enterprise Microservices Refactor
Designed a clean microservices architecture for calculating insurance price tariffs for car fleets of a German insurer. Refactored "distributed monolith" anti-patterns within a legacy system using Domain-Driven Design (DDD). Mentored junior developers and managed infrastructure/DevOps redesign.
Contact
I'm currently open to new opportunities and interesting projects. Feel free to reach out through any of these channels.