Sergio Gutierrez
I am a physicist by training. I studied light: entangled photons in Bogotá, then machine learning on optical fibre in Lund. Since 2020 I have worked at Ericsson, from digital pre-distortion and ASICs to leading 6G prototypes. In my own time I build software tools and small devices, and write down what I learn.
A personal site. Views are my own, not my employer's.

01 What I learned where
Physics
Curiosity, and order: a clear concept, a careful attempt, an honest assessment, then another try. In the lab you can see the light, put a crystal in the beam and measure what comes out with your own hands.
Industry
Execution: holding a technical intent for years and getting it into silicon, through work packages, people, measurements, supply and budget. At work I orchestrate rather than build alone.
My own time
Building by hand again: software tools, small devices and machine-learning experiments.
02 Career
6G Prototype Technical Lead, Ericsson, since 2024-12. At Ericsson in Malmö since 2020.
Career record03 Ventures
- KaffeparkenSpecialty coffee roastery in Malmö. Direct trade from Huila, Colombia.Paused
04 Contact
Write to me about any of the projects here, or about machine learning and small devices.
- in/sergio-gutierrez
- GitHub
- ChiefGuti
05 Colophon
- Lines
- Solid = measured. Dashed = an estimate, or not yet confirmed.
- Figures
- FIG. n, numbered in reading order. Each opens full size.
- Header
- The sheet code and its subject.
- Footer
- BUILT = the date the site was built.
- Ridge
- The line above the footer is the Andes skyline, traced from the drawing made for Kaffeparken.