John Arthorne

Inactive account from the twitter era.

[Energy Records @energyrecord5]

In December 2025, Chile hit a new monthly electricity record for generation share of 31.16% in solar power. This exceeds the previous peak of 30.4% set in November 2025.

[mike dalessio @flavorjones]

I'm heartbroken to share this news about our dear friend and colleague, @ChrisGSeaton.

[NASA Webb Telescope @NASAWebb]

If you held a grain of sand up to the sky at arm’s length, that tiny speck is the size of Webb’s view in this image. Imagine — galaxies galore within a grain, including light from galaxies that traveled billions of years to us!

[emily freeman @editingemily]

This is so accurate it hurts.

[John Arthorne @jarthorne]

The number of people joining Shopify RnD *today* alone is greater than the size of the RnD team when I joined 6 years ago 🤯. To my ~300 new colleagues: Welcome! 🚀

[Ian Bull @irbull]

If you're looking for an engineering manager, hire Kim! She's awesome.

[John Arthorne @jarthorne]

@planetscott @jeremycole Like Black Friday 2017...

[John Arthorne @jarthorne]

Back to work today after my first full month holiday in 30 years. Now I understand what my European friends have been going on about. Month-long summer vacations are something I could get used to!

[John Arthorne @jarthorne]

@kmcphillips @AnnieCodes I've done the first half of that drive with toddlers. You need to burn kids energy at every stop. Most towns have a school playground, and hotels with a pool are ideal. Good luck and enjoy!

[John Arthorne @jarthorne]

@jayjaybillings @irbull Just wait till you see the preferences API 😉

[John Arthorne @jarthorne]

My career has come full circle. My current team at work is building a platform featuring extensions, extension points, and components. I could have said the same thing 20 years ago 😂

[Shopify @Shopify]

Customizing Shopify Checkout is easier with checkout extensions, which give devs the ability to build apps directly into Checkout - now across all Shopify stores.

You can seamlessly and securely power everything from server side business logic to UI changes within Checkout.

[John Arthorne @jarthorne]

@wvanbergen @Shopify @tobi Thanks for being my lead and guide in my first years at Shopify, I learned so much from you! Look forward to following your future adventures ♥️

[John Arthorne @jarthorne]

Some Shopify colleagues bought 40K N95 masks from @masks4allCanada and donated them to essential works in Ontario Covid hotspots. The demand is far greater so they are raising funds for a second batch. A great way to contribute directly where it's needed! https://t.co/89EAnFJFpF

[John Arthorne @jarthorne]

@Jahfer If it's open you can go there. Fine print: https://t.co/FhVKJLNRWJ

[John Arthorne @jarthorne]

@nedgar I think that's US Gov't withholding tax? That is 15% rate due to Canada-US tax treaty.

[John Arthorne @jarthorne]

@irbull @jmwind If it's for a whole class of students making stores there is a program for this which is all free: https://t.co/iMvdmGIGUU

[Wikipedia @Wikipedia]

IT IS OUR 20TH BIRTHDAY! 🎂

Wikipedia started as an ambitious idea. Over 20 years, people like you have made it possible. If you are a Wikipedia reader, contributor, donor, or fan — today is for you.

Join the celebration: https://t.co/XbYn6bLP70 #Wikipedia20

[John Arthorne @jarthorne]

@nedgar @OntarioOpen @OurWorldInData There is a good Canadian aggregate tracker here.. It uses regional health unit data for Ontario because the provincial data are delayed: https://t.co/xbZV1dIvHQ

[John Arthorne @jarthorne]

@burkelibbey If you haven't already, I suggest checking out the 2020 Massey Lecture which is exactly on this topic. Weaponization of both attention and data, and the feedback loops and biz models that feed into/off it. It's a fascinating unpacking of these problems https://t.co/CdY7QeXLrf

[Jean-Michel Lemieux @jmwind]

The team had way too much fun with d3, three, and glsl shaders. Enjoy the big upgrade to the #bfcm2020 live orders map by @ShopifyEng.

https://t.co/TPVkF3Giol