Swizec Teller
@swizec.com
Best selling author of Scaling Fast: Software Engineering Through The Hockeystick
book ⏵ https://scalingfastbook.com
prev book ⏵ https://swizec.com/senior-mindset
blog ⏵ https://swizec.com
book ⏵ https://scalingfastbook.com
prev book ⏵ https://swizec.com/senior-mindset
blog ⏵ https://swizec.com
Finally some good pace 🥳
January 25, 2026 at 8:46 PM
Finally some good pace 🥳
Yesterday wasn’t great so I had to do it again today. Much better
January 19, 2026 at 7:00 PM
Yesterday wasn’t great so I had to do it again today. Much better
So I was gonna try an epic Waymo journey to Sunnyvale today, then I noticed the time. Almost 3 hours 😂
Guess we’re not quite there yet thanks for the warning
Guess we’re not quite there yet thanks for the warning
January 18, 2026 at 9:12 PM
So I was gonna try an epic Waymo journey to Sunnyvale today, then I noticed the time. Almost 3 hours 😂
Guess we’re not quite there yet thanks for the warning
Guess we’re not quite there yet thanks for the warning
Short run today. The mind is willing but the flesh is flabby and bruised
January 18, 2026 at 7:31 PM
Short run today. The mind is willing but the flesh is flabby and bruised
Oh hell yeah, a Slovenian won the Dakar!
amazing
amazing
January 17, 2026 at 10:04 PM
Oh hell yeah, a Slovenian won the Dakar!
amazing
amazing
wow v0 built a whole system to collect testimonials
took a little iteration but pretty sweet. I can finally “code” from my iPad while watching TV
took a little iteration but pretty sweet. I can finally “code” from my iPad while watching TV
January 14, 2026 at 5:26 AM
wow v0 built a whole system to collect testimonials
took a little iteration but pretty sweet. I can finally “code” from my iPad while watching TV
took a little iteration but pretty sweet. I can finally “code” from my iPad while watching TV
someone asked if I’d ever cofound a startup [again]
January 12, 2026 at 4:28 PM
someone asked if I’d ever cofound a startup [again]
Minutes of planning save you days of programming.
It is shocking how little planning it takes to make a big difference.
swizec.com/blog/small-p...
It is shocking how little planning it takes to make a big difference.
swizec.com/blog/small-p...
January 10, 2026 at 5:37 PM
Minutes of planning save you days of programming.
It is shocking how little planning it takes to make a big difference.
swizec.com/blog/small-p...
It is shocking how little planning it takes to make a big difference.
swizec.com/blog/small-p...
some logitech server went down so now my mouse dont work right 🙃
January 7, 2026 at 1:03 AM
some logitech server went down so now my mouse dont work right 🙃
Like running through soup today. Then it rained and it was like running through a waterfall
January 4, 2026 at 7:39 PM
Like running through soup today. Then it rained and it was like running through a waterfall
engineers with good taste will dominate
January 2, 2026 at 3:45 PM
engineers with good taste will dominate
here's the full test definition
January 1, 2026 at 3:27 PM
here's the full test definition
I am jetlagged and couldn't sleep so check out my experimental E2E testing agent verify a whole purchase flow from a 2 sentence description
this is gonna be huge 🤩
this is gonna be huge 🤩
January 1, 2026 at 3:27 PM
I am jetlagged and couldn't sleep so check out my experimental E2E testing agent verify a whole purchase flow from a 2 sentence description
this is gonna be huge 🤩
this is gonna be huge 🤩
screw tokens check this
January 1, 2026 at 2:25 AM
screw tokens check this
Here's a more complex example
- describe your test
- agent tries to make it happen on your website (50sec)
- writes down steps as playwright script
- future runs replay the script and verify website works (10sec)
I'm excited. This will save so much tedium
- describe your test
- agent tries to make it happen on your website (50sec)
- writes down steps as playwright script
- future runs replay the script and verify website works (10sec)
I'm excited. This will save so much tedium
December 30, 2025 at 3:28 PM
Here's a more complex example
- describe your test
- agent tries to make it happen on your website (50sec)
- writes down steps as playwright script
- future runs replay the script and verify website works (10sec)
I'm excited. This will save so much tedium
- describe your test
- agent tries to make it happen on your website (50sec)
- writes down steps as playwright script
- future runs replay the script and verify website works (10sec)
I'm excited. This will save so much tedium
81% faster than the first run with full agent mode
on airport wifi, no video speedup 🤘
on airport wifi, no video speedup 🤘
December 30, 2025 at 3:16 PM
81% faster than the first run with full agent mode
on airport wifi, no video speedup 🤘
on airport wifi, no video speedup 🤘
Alright the e2e testing agent is verging on useful
added a very basic caching layer and now you have the agent outputing a stable test suite that's pretty fast to run (70% faster than 1st run)
I think we can push harder
added a very basic caching layer and now you have the agent outputing a stable test suite that's pretty fast to run (70% faster than 1st run)
I think we can push harder
December 30, 2025 at 12:17 PM
Alright the e2e testing agent is verging on useful
added a very basic caching layer and now you have the agent outputing a stable test suite that's pretty fast to run (70% faster than 1st run)
I think we can push harder
added a very basic caching layer and now you have the agent outputing a stable test suite that's pretty fast to run (70% faster than 1st run)
I think we can push harder
Ok it's a little slow but this feels like a good way to write e2e tests. Just needs a good caching layer
video sped up 5x
video sped up 5x
December 29, 2025 at 8:52 PM
Ok it's a little slow but this feels like a good way to write e2e tests. Just needs a good caching layer
video sped up 5x
video sped up 5x
my dudes, it is gorgeous here.
I could winter in almost-the-french-riviera ever year
but only here for 3 days
I could winter in almost-the-french-riviera ever year
but only here for 3 days
December 29, 2025 at 8:14 AM
my dudes, it is gorgeous here.
I could winter in almost-the-french-riviera ever year
but only here for 3 days
I could winter in almost-the-french-riviera ever year
but only here for 3 days
I finally tried the famous provance chichi. She’s been telling me about this delicious treat for 10 years. It’s even better than she said
December 28, 2025 at 5:37 PM
I finally tried the famous provance chichi. She’s been telling me about this delicious treat for 10 years. It’s even better than she said
Fantastic weather in Sanary sur mer
December 28, 2025 at 10:15 AM
Fantastic weather in Sanary sur mer
best cheesecake recipe
you’re welcome
you’re welcome
December 27, 2025 at 9:18 AM
best cheesecake recipe
you’re welcome
you’re welcome
IT WORKED!
The agent can follow a simple instruction and test a workflow \o/
now just gotta keep track of the playwright calls and output a test suite
The agent can follow a simple instruction and test a workflow \o/
now just gotta keep track of the playwright calls and output a test suite
December 26, 2025 at 9:23 PM
IT WORKED!
The agent can follow a simple instruction and test a workflow \o/
now just gotta keep track of the playwright calls and output a test suite
The agent can follow a simple instruction and test a workflow \o/
now just gotta keep track of the playwright calls and output a test suite