Ángel Roberto García Serpa
@ngelrobertogarcaserp
Senior Java backend developer integrating MarTech ad platforms with Spring, OAuth2, and Kubernetes modernization.
SpainWhat I'm looking for
At Walmeric in Madrid, I built and maintained Java backend integrations for Google Ads, Google Analytics, Meta, Campaign Manager 360, and Microsoft Advertising—covering OAuth2 flows, REST clients, and official SDKs.
I owned the end-to-end work for offline conversion upload and audience management modules, helping synchronize CRM data with advertising platforms so client marketing campaigns could deliver reliably.
I also led a production Kubernetes migration and a Java 8-to-21 modernization across the backend stack, plus ongoing microservices upgrades for long-term maintainability.
Earlier, at Akka Technologies, I contributed across railway projects using Java 8, microservices, OpenShift, Angular 7, and Docker—ranging from an EN 50128-compliant compiler effort to C++ railroad testing and Java/TypeScript team leadership.
Experience
Work history, roles, and key accomplishments
Senior Java Backend Developer
Walmeric
Jan 2022 - Present (4 years 7 months)
Built and maintained Java backend integrations for Google Ads, Google Analytics, Meta, Campaign Manager 360, and Microsoft Advertising using official SDKs and OAuth2 flows. Migrated and containerized the application to Kubernetes and modernized microservices from Java 8 to Java 21.
Software Engineer
Akka Technologies
Sep 2020 - Jul 2021 (10 months)
Contributed to three projects in the railway transportation sector, including developing a compiler for an EN 50128-compliant design guide, testing C++ railroad systems, and serving as Jr. Team Leader on a Java/TypeScript project.
Junior Full-Stack Web Developer
Sepsa (Sotec Consulting)
Mar 2019 - Mar 2020 (1 year)
Supported a real-time train information WebApp, implementing new functionality and tooling improvements including introducing RabbitMQ and SonarQube.
Development Intern
Sotec Consulting
Aug 2018 - Jan 2019 (5 months)
Web development using .NET 3.5 and MS SQL Server.
ICT Help Desk Agent
Falabella de Colombia
Nov 2014 - Nov 2016 (2 years)
Provided remote ICT support for multiple store locations, troubleshooting hardware and software for POS systems, computers, tablets, and phones.
Education
Degrees, certifications, and relevant coursework
Universidad Nacional de Educación a Distancia
Bachelor of Engineering, Computer Engineering
2013 -
Pursuing a Bachelor's Degree in Computer Engineering.
Cisco Networking Academy
Cisco Certified Network Associate, Networking
Earned Cisco Certified Network Associate (CCNA) certification.
IES Alpajés
Higher Technician, Systems and Networking
2003 - 2005
Completed Higher Technician in Systems and Networking.
Availability
Location
SpainAuthorized to work in
Job categories
Skills
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