xel sarlin

Axel Sarlin

fd. Hulterström

I am passionate about elegant solutions to complex problems,
for instance through mathematics, functional programming and technology.
Here's some information about things I have done.


I wrote a blog post for Avaus: link

I wrote another blog post for Avaus: link

I joined H&M Group to work with recommendation systems 2021-08-17

I changed teams at H&M to work with size predictions 2023-08-01

I made a page for my running races and results here


Data scientist at H&M Group 2021 - present
Data scientist at Avaus 2018 - 2021 (link)
Jr data scientist at Avaus 2017 - 2018
Skrivarchef Fysikalen 2013 - 2014 (wikipedia)
Chefsredaktör Force 2014 (example, another example)

Kassör in my housing co-operative 2018-2020

Master's degree in mathematics KTH/SU 2015-2017
of which 2015-2016 was spent at LMU, Munich
Thesis: étale homotopy, F. Morel (LMU), D. Rydh (KTH) (pdf, short version)

Bachelor's degree engineering physics at KTH 2012-2015
Thesis: on Gröbner bases with I. Zotov, supervisor T. Bauer (pdf)

more detailed education info

other stuff and links

blog post on building for scale vs pocs (link)
blog post on adding features to your models (link) (backup)
presentation slides on functional programming (link)

my first game in javascript (2011) (link)
the same game implemented in haskell (2017) (link)

a map of mathematics (with i. zotov) (link)
the poincaré-hopf theorem popularised (with i. zotov) (link)

picture gallery of my fountain pens (link)

what others say


--my coworkers


--my coworkers

Refresh the page to see other quotes.

misc info

playing trombone (previously cornet) in immanuel brass, stockholm.
we won division 1 in the swedish championships 2023 (link)
and we placed 2nd in division 1 in 2021

previously i played trombone and baritone in bands
such as berga brass, järfälla brass, österledsbrasset,
stockholms unga blåsarsymfoniker, pq and others

won division 2 of the swedish championships with österledsbrasset 2011 (link)

sang bass in the choir Micapella in Munich

previously scout and active in various ways in sollentuna södra scoutkår

author axel sarlin

background picture by innokentij zotov