Erik Martín Jordán

Engineer from Barcelona. I build open-source and write about what I learn along the way — technical, personal, and everything in between.

Currently building a few things — see projects.

Writing
2025
Unseen angelsSep 17
Systems theorySep 04
PerplexityAug 21
2024
Create a filter from multiple columns in Power BIAug 14
Full outer join in Power BIJan 05
2023
Habits and routinesJan 15
I achieved level 90 in FreeleticsJan 03
Recursive generation of QGIS maps for each locationAug 26
2022
Government and fibre deploymentMay 10
947May 17
Feeling stupid at a new jobMay 13
RebrandingJul 18
Tech without brandingJun 14
2021
Donations, ads, memberships, paid newsletters—what's next?Dec 11
What is money?Nov 29
Paying with QR codes in ThailandNov 21
I got an iPhone 13 MiniDec 19
2020
End of year reflectionDec 28
Hedonic adaptationDec 26
About Firebase project limitsDec 22
2019
Documenting the journeyDec 13
When nothing seems to workSep 22
Replicating GitHub's gridAug 03