HNHacker News
TopNewBestAskShowJobs

jacekm

560 karma · joined May 20, 2015

Jacek Maciejewski is a QA Engineer living in Poznań (Poland). Loves traveling, especially around Japan.

Currently: Lead QA Engineer at VML (after series of rebrandings Cognifide -> Wunderman Thompson -> VML) Poznań, Poland (Feb 2017-present)

Previous positions:

    * Senior QA Consultant at ThoughtWorks London (Oct 2014 - Mar 2016)
    * Senior QA Engineer at Cognifide Poznań, Poland (Feb 2011 - Sep 2014)
Education:

    * Hokkaido University (Sapporo, Japan)
    * Adam Mickiewicz University (Poznan, Poland)
website: https://maciejewski.eu

[ my public key: https://keybase.io/jacek; my proof: https://keybase.io/jacek/sigs/3XArjWFBqBHtwB0NujKq9C9x-t4hAmLa9ntXBFHMCsM ]

submissionscomments
jacekm··on High-speed train collision in Spain kills at least 39
Animals on tracks remain a problem, although they do not pose risk to human life (just damages to the trains). One of the attempts to protect animals include acoustic deterrents, here's a Polish one as an example [1] but they are manufactured around the world. The Polish one plays sounds of predators, dying creatures, hunting dogs, etc to scare away forest animals (search for "UOZ-1" on youtube if you want to hear the sounds). Such devices significantly lower the number of collisions but unfortunately they are not 100% effective.

[1] https://www.youtube.com/watch?v=W0j68iepI88

jacekm··on Ask HN: How are you doing RAG locally?
I am curious what are you using local RAG for?
jacekm··on Allow me to introduce, the Citroen C15
> Would you like to live neighbours with this person

Sure, because he has a sense of humor.

jacekm··on ChatGPT Health
There's "Ask ChatGPT" overlay at the bottom of the page, so I asked "how risky is giving my medical data to OpenAI?" Interestingly ChatGPT advised caution ;) In short it said: 1. Safer than standard AI chats, 2. Not as safe as regulated healthcare systems (it reminded that OpenAI is not regulated and does not follow e.g. HIPAA), 3. Still involves inherent cloud risks.
jacekm··on AWS raises GPU prices 15% on a Saturday, hopes you weren't paying attention
Something or someone will eventually fill the void. Chinese are trying to manufacture GPUs, they are very far from what Nvidia can offer, but they'll slowly get there. As for RAM - the new factories are being built and will hopefully become operational in 2028.
jacekm··on The State of AI Coding Report 2025
> About a billion lines of code go through Greptile every month, and we're able to do a lot of interesting analysis on that data.

Which stats in the report come from such analysis? I see that most metrics are based on either data from your internal teams or publicly available stats from npm and PyPi.

Regardless of the source, it's still an interesting report, thank you for this!

jacekm··on Roomba maker goes bankrupt, Chinese owner emerges
Depends on where you live. In Poland the house cleaning costs ~$15/h. The robot vacuum would pay itself off within a year.

But I am aware that in e.g. some parts of Asia the maid service is dirt cheap.

jacekm··on Someone at YouTube Needs Glasses: The Prophecy Has Been Fulfilled
In the meantime "YouTube No Translation" addon fixes the issue. https://youtube-no-translation.vercel.app/
jacekm··on ChatGPT Atlas
I think that such feature is already available in Chrome https://support.google.com/chrome/answer/15305774?hl=en
jacekm··on Spotlight on pdfly, the Swiss Army knife for PDF files
Lots of cheap (and good) Chinese alternatives entered the market recently but I'd say Victorinox is still going strong. In Poland it's sold everywhere and the brand is very recognizable.
jacekm··on Offline card payments should be possible no later than 1 July 2026
I am not sure what you mean by "buyer protection" but if it's chargeback then it's doable on debit cards too.
jacekm··on Ask HN: How do you say “I don’t know, but I’ll get back to you” confidently?
At the beginning of my career I was shitting my pants when I had to respond with "I don't know". But the more experience you have the easier it gets. Eventually you will observe that such response does not bring any bad outcomes.

FWIW I usually respond with "let me consult this with my team".

jacekm··on You did this with an AI and you do not understand what you're doing here
In my company we sometimes cherry-pick parts of the AI summaries and send them to the clients just to confirm the stuff that we agreed on during a meeting. The customers know that the summary is AI-generated and they don't mind. Sometimes people come to me and ask whether what they read in the summary was really discussed in the meeting or is it just AI hallucinating but I can usually assure them that we really did discuss that. So these can be useful to a degree.
jacekm··on Mistral raises 1.7B€, partners with ASML
I just want to remind our overseas friends that the EU is not a country and Mistral is French company. The EU rarely bets on a single firm in a single country, there are always 26 unhappy countries when something like that is about to happen ;)

I am European and I do agree that we should support the European companies but such decision are always results of lengthy deliberations.

Does anyone know if there is any company that is proactively supported by the EU?

jacekm··on Majority in EU's biggest states believes bloc 'sold out' in US tariff deal
I wouldn't mind "security in exchange for better economic treatment" deal, but I don't understand how anybody still trusts US in terms of security. They clearly showed that they fear Russia, plus Trump made several allegations that they may not provide military help even to NATO allies. I am from Poland, theoretically we have US troops stationed here but over 70% of population (including myself) don't believe they will stay here long once we're attacked.

US got concrete economic concessions in writing in exchange for words about security.

jacekm··on Ask HN: Do you still bookmark websites?
Yes, I have a lot of bookmarks. When I bookmark a page, I add some keywords to the bookmark's title so I can easily find it in the future. It's not strictly tagging, I just try thinking of words the future me could use when searching for a particular bookmark.

However, I've never used any bookmarking service. It makes sense if you want to share your bookmarks, but I prefer to keep them private.

jacekm··on Ollama Turbo
What could be the benefit of paying $20 to Ollama to run inferior models instead of paying the same amount of money to e.g. OpenAI for access to sota models?
jacekm··on When Figma starts designing us
That's true in the world without budget constraints. Sometimes minimal changes in the design result in drastic changes to the implementation effort. Sure, I can build anything, but the client may not be happy if I spend a couple of months rewriting entire front-end just to accommodate designer's dream.
jacekm··on A new PNG spec
Thank you for the examples. I tried the one with a pink cake. Turns out that on my machine only web browsers are capable of displaying the image properly. All viewers (IrfanView, XnView, Nomacs, Windows Photos) and editors (Paint .NET, GIMP) that I've tried only showed the "washed out" picture.
jacekm··on FICO to incorporate buy-now-pay-later loans into credit scores
I do. Housing prices are constantly rising, when you take a loan you are buying an asset which (with some luck) may appreciate in value more than mortgage interest rates. That's why in some countries it's worth taking a loan as soon as possible without saving for too long.

Sure, without mortgage you may not be able to afford a house at all but it does not change the fact that mortgage is a "good" loan (i.e. you benefit from taking it)

jacekm··on Ask HN: How to get rid of Gemini?
Thank you! I have no issues with occasional AI responses but nevertheless it's great to have a choice!

Are there any other subdomains worth knowing? I was only aware of the Lite version so far.

jacekm··on Ask HN: How to get rid of Gemini?
Just kill it with uBlock. The more elegant way would be to inject a proper parameter to session storage with some kind of extension. Or switch to the light version of the service https://lite.duckduckgo.com/lite/

edit: I can see that in a comment below @yegg shared an even better way - switching to https://noai.duckduckgo.com/

jacekm··on Building an AI server on a budget
For $100 more you could get a used 3090 with twice as much VRAM. You could also get 4060 Ti which is cheaper than 4070 and it has 16 GB VRAM (although it's less powerfull too, so I guess depends on the use case)
jacekm··on Sleep apnea pill shows striking success in large clinical trial
Noob question: could this drug help with snoring as well?
jacekm··on Have I Been Pwned 2.0
Yeah, I have rather aggressive blocking on with uBlock Origin. Google started blocking me about a month ago, I have to solve captcha for literally every query. I know it's uBlock as things are back to normal when I disable it. Well, this helps me to learn new muscle memory to rely on DuckDuckGo and Brave Search instead.
jacekm··on A community-led fork of Organic Maps
> map overlays that are easy to read like more pronounced lane/route arrows

Try Magic Earth https://play.google.com/store/apps/details?id=com.generalmag...

jacekm··on Try Switching to Kagi
I suspect the secret sauce might be uBlock Origin. Even with basic, default filters it transforms Google into a vastly different experience.
jacekm··on Llama.cpp AI Performance with the GeForce RTX 5090 Review
Sigh, I knew they were more than $1000 but did not anticipate that much. You are correct, the price seems to go up every time I check.
jacekm··on Llama.cpp AI Performance with the GeForce RTX 5090 Review
If my budget is only ~$1000 should I buy a used 3090 or a new 5080? (for AI, I don't care about gaming)
jacekm··on Kagi Is Bringing Orion Web Browser to Linux
https://millionshort.com/ might be the search engine you are looking for.
← PreviousPage 2 of 7Next →