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jdiaz5513

129 karma · joined March 16, 2013

[ my public key: https://keybase.io/jdiaz5513; my proof: https://keybase.io/jdiaz5513/sigs/_il_etIuccmIvltxQ9a74EvAPrJcLnPtKAc74sePMls ]
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jdiaz5513··on NixOS 26.05
What makes Bazzite-like uncommon is the degree of hardware testing and kernel tuning required to get some of the more exotic hardware fully working and stable.

Jovian exists for the Steam Deck and is probably the closest thing right now: https://jovian-experiments.github.io/Jovian-NixOS/

I am tempted to try making a "Nixzite" flake just to see how far it can get to feature parity with Bazzite, but again most of the story with Bazzite is the sizable community working on hardware tuning and kernel modifications. The catch with that flake would be a lot of waiting for the kernel to rebuild if I bring in the Bazzite patches, and that's just not a fun UX...

jdiaz5513··on It is time to give up the dualism introduced by the debate on consciousness
Fully agree, and I am mildly disappointed to see nobody has brought up Maturana and Varela in this entire thread.

The deeper layer is autopoiesis - the conceptual foundation authored by them that embodied/4E cognition builds on.

They defined cognition as a necessary property of self-referencing, self-maintaining boundaries in an information-theoretic/topological sense, not bound to any specific physical process.

This dissolves the dualism Rovelli targets in a way that pure materialist/eliminativist arguments don’t manage cleanly. Autopoiesis is fully physical (mathematically modelable, biologically grounded) but it locates consciousness in structural relationships and informational dynamics rather than a purely physical substrate.

Thompson’s Mind in Life (2007) is the contemporary version, and Varela’s later work integrates phenomenology directly.

I hold that it may be possible to use the toolkits of set/category/group/type theory to formalize these relationships.

Would be a vastly different conversation thread here if this work was more well known.

jdiaz5513··on It is time to give up the dualism introduced by the debate on consciousness
I agree with you except for one important nuance:

I think what many people are doing is looking for something that is fundamentally a higher dimensional object (dim>4) which casts a 4D spacetime shadow (our bodies) by shining a torch on _that_ shadow. Still doesn't allow for any satisfying direct observation.

This kind of dimensional analysis is part of the focus of my current research program.

jdiaz5513··on Hardware Attestation as Monopoly Enabler
I also had a similar issue with Cascade Bicycle Club - they chose to organize things via WhatsApp, and since I am (inexplicably) banned from opening a Meta account I was completely left out of the group and missed out on many rides/details that were only shared via WhatsApp.

When I tell people that this is even possible I get wide-eyed stares — as if they never contemplated that Meta could exercise their right to ban someone from the platform.

It's a huge problem and I have no idea how to fix it except talk about it and spread awareness. And I am not remotely interested in trying to work around the ban.

jdiaz5513··on Ask HN: Who is hiring? (February 2025)
The domain is a brand new domain we've been switching to and we've hit a fun snafu with the DNS configuration recently - looks like some email got mixed up in that. It should be working now, or you can try the same email address at joinzest.com as well.
jdiaz5513··on Ask HN: Who is hiring? (February 2025)
Zest Dermatology | Remote (USA residents only) | Full-time | Systems Administrator / Software Engineer | https://zesthealth.com

Zest is a virtual dermatology clinic that delivers care for chronic eczema and psoriasis with a level of satisfaction and patient outcomes that are unheard of in conventional dermatology. What makes Zest particularly exciting is its value-based health care business model, a topic worth researching all on its own!

We are looking to add an experienced Linux and web application wizard to our small and agile core engineering team. As part of the core team you will work across and become familiar with the entire stack, and the focus will be on maintaining the AWS infrastructre (orchestrated in Terraform). If you are excited at all by the idea of using nix in a professional environment, you are very strongly encouraged to apply. (We're also not 100% married to it and will make pragmatic decisions when necessary ;).)

You'll be working with me directly, and joining at at time where your voice will be extremely infuential to the future of engineering at the business. We have an _engineering-first_ approach to IT that should be a breath of fresh air to any veteran of the IT scene!

Because of data export restrictions and access to protected health records, all applicants must reside full time in the US. Please send a resume and cover letter directly to me: hn-hiring [at] [website domain] and make sure to mention HN in the subject line.

jdiaz5513··on Ask HN: Who is hiring? (April 2020)
Hinge Health | Security Analyst | San Francisco, CA or Portland, OR | REMOTE (only during COVID-19 pandemic, FT remote possible) | https://www.hingehealth.com/careers

As a healthcare company providing pain relief and alternatives to surgical treatment for those with chronic musculoskeletal (joint) pain, we play a critical role during the pandemic to help people stay healthy, safe, and calm. We do this by delivering a mobile app, motion sensors, and a remote health coach with zero direct human interaction.

With physical therapy offices closing around the United States, we are quickly becoming one of very few options people have available for managing their chronic pain. Our interventions have been proven to keep people away from hospitals for surgery, and during these times that can be a life-saving intervention.

The whole organization is preparing to go to war with SARS-CoV-2 by doing whatever it takes to continue supporting those who are still healthy enough to exercise. Given that there are criminals already taking advantage of the pandemic, the job of securing our organization is more important than ever.

Our security analysts are instrumental in helping ensure we do right by our legal and contractual obligations, as well as protecting the actual security of our patients' data. If the two are ever at odds with each other, securing the data always takes priority without question. Security analysts also help us maintain our advanced secure-by-default and secure-by-design posture by providing expert guidance as we expand in IT and R&D.

We're looking for someone with serious technical chops, a sharp eye that never misses a single detail, excellent writing skills, and the kind of tenaciousness that means no resting on an incident until a true root cause is found.

If you're interested in applying, send an email to the following email address: anVsaWFuK2huMjAyMDAzQGhpbmdlaGVhbHRoLmNvbQ==

(I will not disclose the encoding method – consider this part of the screening process. Best of luck!)

jdiaz5513··on Ask HN: Who is hiring right now?
Hinge Health | Security Analyst | San Francisco, CA or Portland, OR | REMOTE (only during COVID-19 pandemic, FT remote possible) | https://www.hingehealth.com/careers

As a healthcare company providing pain relief and alternatives to surgical treatment for those with chronic musculoskeletal (joint) pain, we play a critical role during the pandemic to help people stay healthy, safe, and calm. We do this by delivering a mobile app, motion sensors, and a remote health coach with zero direct human interaction.

With physical therapy offices closing around the United States, we are quickly becoming one of very few options people have available for managing their chronic pain. Our interventions have been proven to keep people away from hospitals for surgery, and during these times that can be a life-saving intervention.

The whole organization is preparing to go to war with SARS-CoV-2 by doing whatever it takes to continue supporting those who are still healthy enough to exercise. Given that there are criminals already taking advantage of the pandemic, the job of securing our organization is more important than ever.

Our security analysts are instrumental in helping ensure we do right by our legal and contractual obligations, as well as protecting the actual security of our patients' data. If the two are ever at odds with each other, securing the data always takes priority without question. Security analysts also help us maintain our advanced secure-by-default and secure-by-design posture by providing expert guidance as we expand in IT and R&D.

We're looking for someone with serious technical chops, a sharp eye that never misses a single detail, excellent writing skills, and the kind of tenaciousness that means no resting on an incident until a true root cause is found.

If you're interested in applying, send an email to the following email address: anVsaWFuK2huMjAyMDAzQGhpbmdlaGVhbHRoLmNvbQ==

(I will not disclose the encoding method – consider this part of the screening process. Best of luck!)

jdiaz5513··on Apollo Client 2.5 for GraphQL Announced
I'm 100% with you on this. One of my teams just spent 3 weeks ripping out all of that tedious (and error-prone!) resolver code that resulted from trying to use apollo-link-state for local state management and switching it all to redux instead.

It is insane how many silent failure modes the Apollo cache has. Performance and ability to estimate work (predictability) went through the roof since then. It's just way overcomplicating things to do state management this way - Apollo is a lovely GQL client otherwise.

I may do a write-up on this one day, as a cautionary tale. It boggles the mind that this is being pushed so hard as an ultimate solution to state management - nice in theory but awful in practice.

jdiaz5513··on Ask HN: Who is hiring? (February 2019)
Hinge Health | San Francisco, CA | Onsite | Full-Time | Design, Software Engineering, Engineering Ops (DevOps)

Hinge Health is breaking new ground by re-defining what best practice means for musculoskeletal (MSK) health. We have incredible traction in the market, a clear hockey-stick growth curve, and a profound mission that (really!) changes lives on a daily basis.

With our current trajectory we're basically hiring across the board and currently building out our foundations of senior talent. (New grads are not good a fit for us just yet, but we plan to get there soon.)

This is not just a call for passionate software engineers, but also designers who understand that design goes far beyond just "visual design" or "UI". If you get both design and code we definitely will want to talk!

Technologies we use at Hinge include: Rails, React, React Native, PostgreSQL, TypeScript, Docker, ElasticSearch, InfluxDB, and currently evaluating use-cases for Elixir.

Our design tools include: AfterEffects, Sketch, Abstract, and Invision.

Send me an email if you want to start a career in next-gen healthcare: julian at hingehealth dot com

jdiaz5513··on Ask HN: Who is hiring? (January 2019)
Hinge Health | San Francisco | ONSITE | Senior Mobile UI Engineer

We've got an exciting opportunity available for someone who's been itching to work on a production-grade React Native mobile application. This job is for you if:

- you think TypeScript is a leap forward and can't wait to use it in a professional context (no prior experience necessary!).

- React makes you look back on imperative UI programming as the "dark ages".

- despite all the above, you'd feel 100% comfortable writing a light web app in Vanilla JS.

- you love the idea of directly helping people, rather than mining them for data.

- compromising on user experience, letting users do the QA work, or other similar abuses of users' trust does not fly in your book.

This is not at all an entry level position, and our standard for a Senior Engineer title may be higher than what many people are used to. We'll be particularly looking for a track record of building user interfaces in a professional context – code samples and live demos are a big plus.

Email me directly with "Hello from HN" in the subject line to hear more about the position and to apply formally.

My email address (base64 encoded): anVsaWFuK2huQGhpbmdlaGVhbHRoLmNvbQ==

jdiaz5513··on How we solved our office Wi-Fi problems
Yup. The network engineer in me would never recommend Ubiquiti for any scenario. Maybe it works for WISP because of the price point; I'd have to be convinced.

They run an embedded Mongo DB on their UniFi hardware that (at least in the deployment I've inherited) requires occasional direct interventions[1] to keep running. That's just one example of the many baffling/wrong things they do.

I know Mongo gets quite a bit of undeserved hate, but it really just doesn't seem suitable for this use case.

[1] https://help.ubnt.com/hc/en-us/articles/360006634094-UniFi-S...

jdiaz5513··on Hello, GitHub
Integrated CI backed by Azure (with paid options for non-OSS projects) could be a positive outcome of this acquisition. Done right, could be a good gateway to get OSS devs experimenting on Azure.

More viable competition on cloud hosting is definitely a good thing for society at large.

jdiaz5513··on Intel Announces Optane DIMMs
Running Redis would be pretty fun on this.
jdiaz5513··on Ask HN: Who is hiring? (April 2018)
Hinge Health | https://hingehealth.com | San Francisco | Full Time | ONSITE

Hinge Health offers digital delivery of best-practice care for chronic musculoskeletal (MSK) pain without resorting to drugs or surgery. We accomplish this through a program based on three core pillars: exercise therapy, coaching & lifestyle, and education. Exercise is tracked through an Android app and wearable sensors, and a personal health coach adds vital support and motivation.

Our results are inspiring and leads to measurable drops in pain and surgery likelihood. Witnessing some of the patient testimonials sits among the most precious moments of working here.

We partner with brand-name corporations to offer our kit to their employees, usually covered as part of the overall benefits package. This creates a rare win-win scenario where all people benefit from our continued success – and we're growing fast!

Tech stack: Amazon, Aptible, Postgres, Redis, RoR, Android, React, and React Native.

We're looking to hire for two main roles: Ruby on Rails for general backend engineering, and Javascript/Typescript for our React and React Native frontends. Previous iOS native experience along with React experience is a huge plus! We do not have an apprenticeship program at the moment, so we will require previous industry experience for either role.

Our engineering team is led by people who truly care about doing right by the world, and inhumane practices of all kinds are verboten. In addition we stand strongly by good engineering principles, so concepts like linting and testing are given due respect. Our hiring process does not include whiteboard challenges or algorithm puzzles (see my comment history for my personal thoughts on the subject).

Daily wellness sessions and paid-for parkside lunches are among the things that makes the day-to-day here quite a blast!

If this sounds inspiring to you I'd love to talk: julian@hingehealth.com

jdiaz5513··on Ask HN: Who is hiring? (March 2018)
Hinge Health | https://hingehealth.com | San Francisco | Full Time | ONSITE

Hinge Health offers digital delivery of best-practice care for chronic musculoskeletal (MSK) pain without resorting to drugs or surgery. We accomplish this through a program based on three core pillars: exercise therapy, coaching & lifestyle, and education. Exercise is tracked through an Android app and wearable sensors, and a personal health coach adds vital support and motivation.

Our results are inspiring and leads to measurable drops in pain and surgery likelihood. Witnessing some of the patient testimonials sits among the most precious moments of working here.

We partner with brand-name corporations to offer our kit to their employees, usually covered as part of the overall benefits package. This creates a rare win-win scenario where all people benefit from our continued success – and we're growing fast!

Tech stack: Amazon, Aptible, Postgres, Redis, RoR, Android, React, and React Native.

We're looking to hire for two main roles: Ruby on Rails for general backend engineering, and Javascript/Typescript for our React and React Native frontends. Previous iOS native experience along with React experience is a huge plus!

Our engineering team is led by people who truly care about doing right by the world, and inhumane practices of all kinds are verboten. In addition we stand strongly by good engineering principles, so concepts like linting and testing are given due respect. Daily wellness sessions and paid-for parkside lunches are among the things that makes the day-to-day here quite a blast.

The HQ is in SF, with a smaller satellite London office from the former HQ.

We're hiring at all experience levels, so if this sounds inspiring to you I'd love to talk: julian@hingehealth.com

jdiaz5513··on How PayPal Shares Your Data
I would be amused to find out it's a PoC to demonstrate what it takes to sucker a company into handing over the data.
jdiaz5513··on Stanford CS9: Problem-Solving for the CS Technical Interview
Careful. Software engineering is very much a real engineering discipline, and it is a major cultural failing to not recognize it as such.

Required viewing: https://www.youtube.com/watch?v=zDEpeWQHtFU

jdiaz5513··on Stanford CS9: Problem-Solving for the CS Technical Interview
This makes me very, very sad.

I will never subject one of my potential hires to this nonsense. These concepts are valuable and academically interesting, for sure, but for the practical kind of engineering that's done at most companies it's simply not needed. Either that or it's already implemented in a library.

What a waste of time.

jdiaz5513··on The problem of game developers receiving abusive messages
Something tells me there may be an inherent danger to isolating these people further.

You may be on to something, but perhaps restricting sales is not the best use of user-ratings.

I've often wondered if weighing a producer-side rating against the user-side rating could work (e.g. a user with a low rating can give a 1 star review yet have little effect on the game rating).

jdiaz5513··on Ask HN: Who is hiring? (January 2018)
Hinge Health | https://hingehealth.com | San Francisco or London | Full Time | ONSITE

Hinge Health offers digital delivery of best-practice care for chronic musculoskeletal (MSK) pain without resorting to drugs or surgery. We accomplish this through a program based on three core pillars: exercise therapy, coaching & lifestyle, and education. Exercise is tracked through an Android app and wearable sensors, and a personal health coach adds vital support and motivation.

Our results are inspiring and leads to measurable drops in pain and surgery likelihood. Witnessing some of the patient testimonials sits among the most precious moments of working here.

We partner with brand-name corporations to offer our kit to their employees, usually covered as part of the overall benefits package. This creates a rare win-win scenario where all people benefit from our continued success – and we're growing fast!

Tech stack: Amazon, Aptible, Postgres, Redis, RoR, Android, React, and looking to add React Native for iOS soon.

We're looking to hire for three main roles: Ruby on Rails for general backend engineering, Javascript/Typescript for our React and React Native frontends, and Android for our current app.

Our engineering team is led by people who truly care about doing right by the world, and inhumane practices of all kinds are verboten. In addition we stand strongly by good engineering principles, so concepts like linting and testing are given due respect. Daily wellness sessions and paid-for parkside lunches are among the things that makes the day-to-day here quite a blast.

The HQ is in SF, with a smaller satellite London office from the former HQ.

We're hiring at all experience levels, so if this sounds inspiring to you I'd love to talk: julian@hingehealth.com

jdiaz5513··on How brands secretly buy their way into Forbes, Fast Company, and HuffPost stories
Let's find an algorithm that can reliably detect this junk and turn it into a browser extension.
jdiaz5513··on A newly discovered moon tunnel
Or maybe the people who get there can just agree to cooperate instead and share the land, unlike how we do things down here.

One can dream.

jdiaz5513··on Israel Hacked Kaspersky, Then Tipped NSA Its Tools Had Been Breached
This is purely anecdotal, but back when I was doing a lot of Windows sysadmin work (and when viruses were rampant) I wound up tearing through a lot of AV vendors in short order.

Only a handful survived my tests, and now I see them all listed here as European AV vendors. Interesting.

Symantec, by the way, was by far the worst. It got to the point where I would immediately uninstall their products on sight. My favorite was when one of their automatic updates started causing boot failures. That sure kept me busy!

jdiaz5513··on When Citi Bikes Are Faster Than Taxis in New York City
Disagree somewhat that Citi bikers are scary. Yeah, they're slow and usually amateurish but they're also easy to spot. If you bump into one it's probably going to be a chuckle-worthy low speed collision.

Tail them for a bit, wait patiently for a safe opportunity to pass, and off you go! It's not like they're crashing into things left and right. Cars are typically more of a real threat, IMO.

There's two things that actually scare me as a biker: kids and dogs. Both are prone to completely unpredictable and sudden movement right into the bike path. If it's a kid holding a dog? FULL STOP.

jdiaz5513··on Apple does right by users and advertisers are displeased
Good to hear! I have been summarily refusing ad-tech job offers (and boy, some of them were willing to pay big bucks).

The ethical concerns are staggering, and as it becomes harder to extract value it seems the ethics violations continue unbounded. People seem willing to do whatever it takes to keep their businesses (and most crucially, the jobs they cannot afford to lose) afloat. I suspect wage slavery is to blame for a lot of this.

It's anecdata, but not a single one of the people I know in media/advertising actually WANTS to be there, and all of them have serious concerns about the business practices. The #1 thing keeping them there in every case is "I need the money".

For those who have the luxury of choice I implore you: vote with your feet, switch jobs, and encourage others to do the same! I refuse to join a company unless I know its profits are tied directly to some mutual benefit for society.

jdiaz5513··on How to hack a turned-off computer, or running unsigned code in Intel ME
This is how we shall benchmark that CPU.
jdiaz5513··on Watsi launches universal health coverage, funded by YC Research
Yeah, agreed. I'm sending them my resume.

My last company (RIP) had a similar idea: ruthlessly cut costs typical for the industry (banking) and pass the savings along to create a product that works for the disadvantaged.

jdiaz5513··on Flutter – A mobile app SDK for iOS and Android
Go for it, as long as the app will always be simple and you don't have a high bar for the UX. Both Angular and React work well with Cordova and it's a great way to leverage existing web dev talent.

Make sure that the Cordova APIs/plugins cover everything you need, because writing custom plugins can be a major pain.

You won't have a lot of performance headroom, especially on Android where some unsolved V8 bugs and inconsistent GPU support on older devices will hold you back. If things start to feel slow and it's a problem for the customer you may need to look elsewhere.

jdiaz5513··on Vue.js vs. React
Maybe for extremely simple webapps that might be true, but for any non-trivial Cordova+React based app you can't come anywhere close to the UX you can get with React Native without some extreme engineering effort. I'd much rather eat the cost to port the HTML5 app to React Native instead. Yes, the users DO notice.

Inability to have the same level of control over soft keyboard behavior is one of the top problems with Cordova, IMO.

Source: wrote & maintained a Cordova+React app on iOS/Android for 3 yrs.

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