Alberto Calleja
Principal Engineer - Spring Engineering at Broadcom
Seville, Andalusia, Spain
Summary
🤩
Rockstar🎓
Top SchoolAlberto Calleja is a Principal Engineer with 11 years of experience building developer-focused Spring Cloud products and cloud-native infrastructure, now helping teams adopt continuous upgrade practices at Broadcom after VMware’s acquisition. He has driven backend and API work for production-grade projects—contributing gRPC support to the high-profile Spring Cloud Gateway and refining service broker schemas in Cloud Foundry’s cloud_controller_ng. Comfortable across Java, Groovy, Go and scripting, Alberto blends hands-on engineering with XP practices like pairing and TDD from his Pivotal Labs background to ship resilient microservices at scale. Based in Seville, he pairs a formal software engineering MSc with recent AI study at Stanford, and often surfaces subtle interoperability fixes that improve long-running platform stability.
11 years of coding experience
14 years of employment as a software developer
University of SevilleArtificial Intelligence Professional Program, Artificial Intelligence, Artificial Intelligence Professional Program, Artificial Intelligence at Stanford University
Spanish, English, French
Stackoverflow
331reputation
26kreached
10answers
1question
Github Skills (24)
cloud-foundry10
apidoc10
json-schema10
java10
ruby10
javas10
api10
api-gateway10
spring-boot10
spring-cloud10
grpc10
json9
microservices-application9
rspec9
reactor9
Programming languages (11)
Github contributions (5)
cloudfoundry/cloud_controller_ng
Jul 2017 - Oct 2018
Cloud Foundry Cloud Controller
Role in this project:
Back-end Developer
Back-end DeveloperContributions:22 commits, 2 PRs, 3 comments in 1 year 3 months
Contributions summary:Alberto primarily contributed to the configuration and validation of service broker API schemas within the Cloud Foundry Cloud Controller project. They focused on defining and refining schemas for service instance creation, updates, and bindings. Their work involved adding new schemas, addressing invalid schema definitions, and ensuring schema compatibility with the service broker API, as evidenced by the refactoring of testing contexts to improve testing practices.
cloud-foundrycloudfoundryruby
spring-cloud/spring-cloud-gateway
Oct 2021 - Jul 2022
An API Gateway built on Spring Framework and Spring Boot providing routing and more.
Role in this project:Back-end Developer & API Developer
Back-end Developer & API DeveloperContributions:11 reviews, 7 commits, 7 PRs in 9 months
Contributions summary:Alberto contributed significantly to the implementation of gRPC support within the Spring Cloud Gateway project. This included adding initial gRPC functionality, adjusting header handling for gRPC communication, and introducing a gRPC-specific response filter. Furthermore, the user worked on integrating native JSON support for gRPC filters. These changes focused on extending the API gateway's capabilities to support gRPC services and improve interoperability.
api-gatewayspringspring-bootspringframeworkjava
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