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william-evans

23 karma · joined February 24, 2022

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william-evans··on Extensible Software in the age of LLMs
WebRTC is coming down the pipe into CSP hopefully soon: https://www.w3.org/TR/CSP3/#directives-other
william-evans··on Extensible Software in the age of LLMs
Will take a deeper look into the Cloudflare OS source - thanks!
william-evans··on Extensible Software in the age of LLMs
I’m building one of these Podda [1], though pointed at households/small communities rather than companies, so ordinary people can keep the apps they’ve made by talking to Claude or ChatGPT and share them with their friends.

Passing code only the things it’s allowed to use works on the server because you start from zero, so our generated code holds no credentials at all and its only way out is a proxy that allows exact origins and methods.

You can’t really do that in the browser. CSP only restricts which origins the code can reach, not the method or the path, so approving one destination means anything the code can read can go anywhere there. The difficult part is that if we're writing an honest consent prompt to our users then it has to say that, and it sounds a lot worse than "allow network access?". This is hard especially when our target users are non/less-technical. There are other versions of the same problem everywhere, like revoking an origin not actually taking effect until a refresh.

[1] https://podda.app

william-evans··on Ask HN: Who is hiring? (August 2025)
Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers to create validated music to improve health and wellbeing.

We are on course to enhance the effectiveness & efficacy of our music through the use of ML.

We've started with hospitality as a launchpad and are now moving into healthcare markets.

Core Stack: TypeScript, Rust (for low-level audio work), React, PostgreSQL, WebSockets, GCP

If you are enjoy ownership, autonomy, design patterns and are a pragmatic generalist then you will enjoy it here.

Hiring Founding Software Engineers in London, UK, - contact me via email: will [at] myndstream.com

william-evans··on Ask HN: Who is hiring? (July 2025)
Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers to create validated music to improve health and wellbeing.

We are on course to enhance the effectiveness & efficacy of our music through the use of ML. We've started with hospitality as a launchpad and are now moving into healthcare markets.

Core Stack: TypeScript, Rust (for low-level audio work), React, PostgreSQL, WebSockets, GCP

If you are enjoy ownership, autonomy, design patterns and are a pragmatic generalist then you will enjoy it here.

Hiring Founding Software Engineers in London, UK, - contact me via email: will [at] myndstream.com

william-evans··on Ask HN: Who is hiring? (June 2025)
Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers & producers to create validated music to improve health and wellbeing.

We are on course to enhance the effectiveness & efficacy of our music through the use of ML (let's have a call to talk more). We're starting with hospitality as a launchpad before moving into wider health sectors.

Core Stack: TypeScript, Rust, React, PostgreSQL, WebSockets, GCP

Hiring Founding Software Engineers in London, UK, - contact me via email: will [at] myndstream.com

william-evans··on Ask HN: Who is hiring? (March 2025)
Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers & producers to create validated music to improve health and wellbeing.

We are on course to enhance the effectiveness & efficacy of our music through the use of ML (let's have a call to talk more). We're starting with hospitality as a launchpad before moving into wider health sectors.

Core Stack: TypeScript, Rust, React, PostgreSQL, WebSockets, GCP

Hiring Founding Software Engineers in London, UK, - contact me via email: will [at] myndstream.com

william-evans··on Ask HN: Who is hiring? (February 2025)
Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers & producers to create validated music to improve health and wellbeing. We are on course to enhance the effectiveness & efficacy of our music through the use of ML (let's have a call to talk more). We're starting with hospitality as a launchpad before moving into wider health sectors.

Core Stack: TypeScript, Rust, React, PostgreSQL, WebSockets, GCP

Hiring Founding Software Engineers in London, UK, - contact me via email: will [at] myndstream.com

william-evans··on Ask HN: Who is hiring? (January 2025)
Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers & producers to create validated music to improve health and wellbeing whilst owning both licensing & distribution. We're starting with hospitality as a launchpad before moving into wider health sectors.

Hiring founding Software Engineers, ML/AI engineers, designers & data people - contact me via email: will [at] myndstream.com

william-evans··on Ask HN: Who is hiring? (December 2024)
Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers & producers to create validated music to improve health and wellbeing whilst owning both licensing & distribution. We're starting with hospitality as a launchpad before moving into wider health sectors.

Hiring founding Software Engineers, ML/AI engineers, designers & data people - contact me via email: will [at] myndstream.com

william-evans··on GPD Pocket 4, 8.8-inch Modular Full-featured Handheld AI PC
They advertise macOS support which is in violation of Apple's EULA...I wonder how long before a takedown request?
william-evans··on Ask HN: Who is hiring? (November 2024)
Myndstream | London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers & producers to create validated music to improve health and wellbeing whilst owning both licensing & distribution. We're starting with hospitality as a launchpad before moving into wider health sectors.

Hiring founding engineers, ML/AI engineers, designers & data people - contact me via email: will [at] myndstream.com

william-evans··on Ask HN: How has Airbnb's decision to merge PMs with design panned out?
I think they actually merged PMs and with Product Marketing Managers rather than with designers[1]

[1]: https://bootcamp.uxdesign.cc/brian-chemskys-change-to-produc...

william-evans··on Humane AI Pin
This is cool, it's a nicer abstraction than what the Google Glasses & then Meta Glasses tried to go for...but it's still a pin I have to wear on my shirt which is stopping me from adopting.
william-evans··on Vercel Edge Function Outage
Currently blocked us from releasing any production code all afternoon. Luckily we've not had anything critical that needs to go out but it is making me a little nervous.
william-evans··on Ask HN: What’s Happening with WeWork?
We’re based in the UK and rent space from WeWork. Still a really good data startup vibe in London - no change noticeable.
william-evans··on Ask HN: Looking for an Alternative to Stripe
We use Checkout.com and find them really helpful.

Their Risk system allows you to block by BIN, which we do, and they provide you full details of the payment details associated with each authorisation.

william-evans··on TypeScript please give us reflection/runtime types
As listed, Typebox is excellent for this use case - it correctly implements the JSON schema spec and allows you to use it to write OpenAPI specifications. At my company we use this to write type-safe handlers & generate our API documentation!
william-evans··on Launch HN: Odigos (YC W23) – Instant distributed tracing for Kubernetes clusters
This is really cool - given my perception of the target market it might be worth targeting AWS Elastic Container Service (ECS) next as the userbase there, I would imagine, is generally looking for less-complex solutions (given the complexity difference between Kubernetes and ECS).
william-evans··on Shumai: Fast Differentiable Tensor Library in TypeScript with Bun and Flashlight
This is very exciting. Given the size of the JavaScript/TypeScript community it was missing something like this, especially, for proof-of-concept use cases.
william-evans··on Ask HN: How do you discover music?
Great band - I completely agree on the effect they can have on you.

If you haven’t already, I’d recommend giving their very first “Welcome” EP a listen.

william-evans··on I'm common as muck and spent £150 to try a Michelin star restaurant
For me it’s not just the quantity of the food, it’s the richness of the food that leaves me consistently feeling full.
william-evans··on How to waste time and overcomplicate things
Thankyou, this post resonated a lot with me.