Ruben Laguna
Senior Data Engineer
Stockholm, Stockholm County, Sweden
Summary
🤩
Rockstar🎓
Top SchoolRuben Laguna is a Senior Data Engineer based in Stockholm with 16 years of experience designing and operating realtime distributed systems across telecom, media, and analytics domains. He blends deep backend engineering (C++, Python) with platform work in Airflow, NiFi, Snowflake/Redshift, and CI/CD, recently focusing on data science, functional programming, and scalable ETL. Ruben has driven production reliability and automation—improving containerized deployments, multi-arch Docker images, and CI pre-commit checks for Apache Airflow—while administering observability and resource management in large data platforms. He is an active open-source contributor who has hardened urllib3 tests for SSL/TLS and memory issues and extended JSON transformation functions in jslt, showing attention to correctness at both infra and library levels. Known as a quick learner who thrives on complex systems, he pairs hands-on coding with pragmatic tooling choices to deliver resilient data products. Unusually for an engineer of his profile, Ruben’s background spans low-level telecom systems to high-level data orchestration, giving him a broad perspective on performance and reliability trade-offs.
16 years of coding experience
19 years of employment as a software developer
Charles III University of Madrid (Universidad Carlos III de Madrid)BS, Electrical and Electronics Engineering, BS, Electrical and Electronics Engineering at Universidad de Alcalá
Swedish, Spanish, English
Stackoverflow
22,978reputation
11.1mreached
200answers
168questions
sse
top-5%
ruby
top-5%
curl
top-5%
oop
top-5%
encoding
top-1%
docker
top-5%
Github Skills (49)
json10
kubernetes10
docker10
ssl10
pytest10
python10
utf10
testing10
work-flow10
workflow-engine10
dockers10
java10
cicd10
javas10
urllib10
Programming languages (29)
Github contributions (5)
schibsted/jslt
Sep 2018 - Apr 2020
JSON query and transformation language
Role in this project:
Back-end Developer
Back-end DeveloperContributions:41 commits, 12 PRs, 61 comments in 1 year 7 months
Contributions summary:Ruben primarily contributed to the `jslt` project by adding new functions and enhancing existing ones. Their work included implementing functions like `is-integer()`, `is-decimal()`, `any()`, `all()`, `modulo()`, and `hash-int()`. They also refactored existing functions like `is-decimal()` and `is-integer()` to support a wider variety of input types. Furthermore, the user improved the functionality of the modulo operation to work with integral types and fixed the hash-int function.
querytransformationtransformjacksonjava
apache/airflow
Sep 2020 - Jan 2024
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
Role in this project:DevOps Engineer & Software Engineer
DevOps Engineer & Software EngineerContributions:42 reviews, 33 PRs, 134 comments in 3 years 4 months
Contributions summary:Ruben's contributions focused on improving the Apache Airflow project's infrastructure and build processes. They addressed Docker image builds for dependencies, specifically ensuring the `pgbouncer-exporter` image was multi-architecture compatible. They also implemented and refined automated checks within the project's CI/CD pipeline, including adding a new pre-commit hook. Further improvements include making fixes in the helm chart and the addition of resource requests and limits, for better resource management. The user demonstrated skills in containerization, CI/CD, and deployment.
monitorpythonschedulerapacheprogrammatically
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