Hi, I'm
Arnau.

Engineer in Barcelona who's passionate about making things run smoothly. I thrive on automation — it's like a puzzle to me, finding ways to streamline processes and build efficient solutions from scratch.

Trust me, I'm an engineer :)

With a background in Industrial Engineering, I've delved deep into the world of data engineering. From crunching numbers as a Data Analyst to leading teams as a Data Engineering Manager and diving into algorithms as a Machine Learning Engineer, I've worn many hats in the data realm.

As a dedicated Data Engineer, I'm all about transforming raw data into actionable insights — designing, developing, and deploying robust data infrastructure to help businesses thrive in the digital age.

This site is where I keep 8 years of notes — the patterns that stuck, the debugs that hurt, the tools I'd recommend to my past self. 68 posts and counting.

Career

8 years · 3 employers

Consultant → senior engineer → engineering manager → staff engineer. The titles changed, the question stayed the same.

2024 — now

Staff Data Engineer

Northius

Leading the data lake creation — Prefect for orchestration, dbt for transformations, and ECS Python jobs for ingestion.

2021 — 2024

Data Engineering Manager

Glovo

Scaled the team from 2 to 15. Led migration to Data Mesh, designed the first data products, and delivered ROI exceeding 10×.

2020 — 2021

Senior Data Engineer

Glovo

Led transition from data warehouse to data lake. Built PySpark pipelines processing ~300M frontend events per day.

2015 — 2020

Consultant

Basetis

Data Engineer, Data Scientist, and team lead across SEAT, Scytl, Naturgy, and Banc Sabadell — AWS, Azure, Databricks.

When I'm not knee-deep in code

Beyond the terminal.

🧗

Scaling cliffs

Weekends on real rock. Climbing is the only thing that turns my brain off completely — you can't debug a crux move.

📖

A book in the sun

Currently alternating between systems writing and old-school sci-fi. The patterns rhyme more than you'd expect.

⚡

Electrical installations

Hands-on DIY — combining my technical skills with projects where a mistake trips the breaker instead of a CI pipeline.