Javier De Andrés
Senior Site Reliability Engineer at cLabs
Greater Madrid Metropolitan Area Spain
Summary
🤩
Rockstar🎓
Top SchoolJavier De Andrés is a Senior Site Reliability Engineer with 12 years building resilient cloud-native and Big Data platforms across Europe, currently shaping blockchain infrastructure and automation at cLabs. He blends telecommunications engineering fundamentals with hands-on DevOps and platform architecture experience—designing PaaS solutions, Kubernetes/containers, Mesos, Docker, and infrastructure-as-code using Terraform, Ansible and HashiCorp tools. Javier has led DevOps teams at organizations like Keyko, Ocean Protocol and Stratio, and mentored cloud and DevOps students for MIT Professional Education, reflecting both technical leadership and pedagogy. He contributes to the Celo blockchain core in Go, improving backend performance, metrics and websocket resiliency, showing a practical focus on observability and production hardening. Comfortable across NoSQL, Spark, Kafka and the Hadoop ecosystem, he combines systems thinking with scripting and automation to operationalize complex distributed systems. Based in Madrid, he brings a pragmatic mix of research-informed methods and production-grade execution that surfaces in both architecture and day-to-day reliability work.
12 years of coding experience
10 years of employment as a software developer
Final Project, Computer Programming, Localization algorithms, 2.4, Final Project, Computer Programming, Localization algorithms, 2.4 at Technische Universität DresdenIngeniería de telecomunicaciones, Telecommunications Engineering, Ingeniería de telecomunicaciones, Telecommunications Engineering at Universidad de Valladolid
Spanish, English, German
Github Skills (8)
go10
web3js10
blockchain10
metric9
http9
testing7
dockers5
docker5
Programming languages (17)
Github contributions (5)
celo-org/celo-blockchain
Dec 2019 - Mar 2022
Official repository for the golang Celo Blockchain
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 16 reviews, 34 commits in 2 years 3 months
Contributions summary:Javier contributed to the Celo blockchain project by modifying core backend functionalities. They refactored and renamed methods related to web3 Istanbul proxy, added new metrics for transaction and gas usage, and added new flags for HTTP timeouts, indicating involvement in performance and monitoring improvements. Further contributions include changing proxy and proxied checks and relaxing websocket connection header checks.
golangcelo-blockchainethereumblockchainweb3
GAdevopsES/hello-color-actions
Jun 2022 - Oct 2024
Contributions:10 PRs, 17 pushes, 10 branches in 2 years 4 months
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