<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Hacker News: SiNTEx</title><link>https://news.ycombinator.com/user?id=SiNTEx</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Wed, 28 Oct 2026 12:06:27 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=SiNTEx" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[Anthropic S-1]]></title><description><![CDATA[
<p>Article URL: <a href="https://www.sec.gov/Archives/edgar/data/2130357/000162828026067168/anthropicpbc-sx1.htm">https://www.sec.gov/Archives/edgar/data/2130357/000162828026067168/anthropicpbc-sx1.htm</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=50242939">https://news.ycombinator.com/item?id=50242939</a></p>
<p>Points: 1697</p>
<p># Comments: 1661</p>
]]></description><pubDate>Mon, 26 Oct 2026 13:04:50 +0000</pubDate><link>https://www.sec.gov/Archives/edgar/data/2130357/000162828026067168/anthropicpbc-sx1.htm</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=50242939</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50242939</guid></item><item><title><![CDATA[Show HN: Kanwas, open-source shared context board for teams and agents]]></title><description><![CDATA[
<p>Article URL: <a href="https://github.com/kanwas-ai/kanwas">https://github.com/kanwas-ai/kanwas</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=47961491">https://news.ycombinator.com/item?id=47961491</a></p>
<p>Points: 57</p>
<p># Comments: 4</p>
]]></description><pubDate>Thu, 30 Apr 2026 12:35:37 +0000</pubDate><link>https://github.com/kanwas-ai/kanwas</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=47961491</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47961491</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Who wants to be hired? (March 2024)"]]></title><description><![CDATA[
<p>Location: Prague, Czechia<p>Remote: Yes<p>Willing to relocate: No<p>Technologies: Python, Django, TypeScript, Node, LLMs<p>LinkedIn: <a href="https://www.linkedin.com/in/marek-vybiral/" rel="nofollow">https://www.linkedin.com/in/marek-vybiral/</a><p>GitHub: <a href="https://github.com/marek-vybiral">https://github.com/marek-vybiral</a><p>Résumé/CV: on Request, but LinkedIn is up-to-date<p>Email: sintexcz [at] gmail [dot] com<p>-------<p>I'm a senior software engineer with focus on backend. I've been building for over 10 years and worn a few different hats: co-founding a startup, consulting, leading a team. Mosty I work with Python, Django, TypeScript, Node.js. I have extensive expereince working with LLMs since the GPT-2 days. Recently I've exited a startup I've co-founded (<a href="https://www.getwelder.com/" rel="nofollow">https://www.getwelder.com/</a>) and build MagicCut (GPT powerd video editor) at VEED.IO. I prefere fixed term contracts but would consider an interesting long term offer too.</p>
]]></description><pubDate>Fri, 01 Mar 2024 21:51:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=39567213</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=39567213</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=39567213</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: What have you built with LLMs?"]]></title><description><![CDATA[
<p>This is awesome. I've been looking for this exactly in the last few days.</p>
]]></description><pubDate>Tue, 06 Feb 2024 10:11:05 +0000</pubDate><link>https://news.ycombinator.com/item?id=39272702</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=39272702</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=39272702</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Freelancer? Seeking freelancer? (January 2024)"]]></title><description><![CDATA[
<p>SEEKING WORK | Prague, Czech Republic | Remote: Yes
Technologies: Python, Django, Flask, Django Rest Framework, TypeScript, Node.js, Postgres, Redis, Docker, Google Cloud (CCP), AWS<p>Linkedin: <a href="https://www.linkedin.com/in/marek-vybiral/" rel="nofollow">https://www.linkedin.com/in/marek-vybiral/</a><p>I'm a senior software engineer with over 10 years of experience. I've worked with startups, big companies, and co-founded and exited two business. My main focus is backend development with Python Django but over the years I've touched many different technologies (React, Objective-C, C#, C++, Go, WebRTC, etc.).<p>I love to solve hard problems in simple ways and to get from zero to one as swiftly as possible while not sacrificing quality. To achieve this I always try to deeply understand the business perspective of the product and identify the most important areas to focus on. The combination of management and deep technical skills is what I feel is my biggest strength.<p>I am available for a fixed term contract which may be a perfect fit to build your MVP or help your startup right after seed round before you scale up the team. I also have my two friends and colleagues with pretty similar background (senior full stack engineer and product manager/designer) at disposal in case your project is more demanding. Let me know on LinkedIn if you are interested.</p>
]]></description><pubDate>Tue, 02 Jan 2024 22:09:41 +0000</pubDate><link>https://news.ycombinator.com/item?id=38847768</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=38847768</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=38847768</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Who wants to be hired? (January 2024)"]]></title><description><![CDATA[
<p>Location: Prague, Czech Republic
Remote: Yes
Willing to relocate: No<p>Technologies: Python, Django, Flask, Django Rest Framework, TypeScript, Node.js, Postgres, Redis, Docker, Google Cloud (CCP), AWS<p>Linkedin: <a href="https://www.linkedin.com/in/marek-vybiral/" rel="nofollow">https://www.linkedin.com/in/marek-vybiral/</a><p>I'm a senior software engineer with over 10 years of experience. I've worked with startups, big companies, and co-founded and exited two companies. My main focus is on backend development with Python Django but over the years I've touched many different technologies (React, Objective-C, C#, C++, Go, WebRTC, etc.).<p>I love to solve hard problems in simple ways and to get from zero to one as swiftly as possible while not sacrificing quality. To achieve this I always try to deeply understand the business perspective of the product and identify the most important areas to focus on. A combination of management and deep technical skills is what I feel is my biggest strength.</p>
]]></description><pubDate>Tue, 02 Jan 2024 22:06:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=38847736</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=38847736</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=38847736</guid></item><item><title><![CDATA[New comment by SiNTEx in "Show HN: Docu – Never sign a sketchy contract again. GPT-4 contract review"]]></title><description><![CDATA[
<p>Good job! I've been playing with something similar in OpenAI Playground to asses contract's I get from my clients. It saved me a lot of time going through all the lengthy legal nonsense. This looks like a pretty nice free tool that take's this idea further.
But it must be expensive to run. I guess it uses the retrieval functionality and it must feed the whole contract to the prompt to work properly. So I guess it won't stay fee forever.
I thing there could be a lot of demand for something like this but with more advanced functionality like edits done automatically to the contract. I'm really looking forward for AI to replace lawyers in the future.</p>
]]></description><pubDate>Wed, 29 Nov 2023 10:55:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=38457891</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=38457891</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=38457891</guid></item><item><title><![CDATA[Ask HN: Protecting Against Attacks Triggering Costly Tasks?]]></title><description><![CDATA[
<p>How do software companies safeguard against attacks that trigger costly operations like LLM inference through a 3rd party service or generate excessive egress traffic for files housed in S3? I know companies where a malicious actor could in 30 minutes of work and and some proxies spend hundreds of thousands of dollars. In theory, one could devise a sophisticated system to monitor trends and apply automated limits to each expensive task. However, from what I've observed, most seem to rely on a mix of basic account/IP rate limiting and global spending quotas set in cloud or 3rd party API providers. Has anyone encountered such an attack and how was it handled?</p>
<hr>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=37833356">https://news.ycombinator.com/item?id=37833356</a></p>
<p>Points: 3</p>
<p># Comments: 0</p>
]]></description><pubDate>Tue, 10 Oct 2023 15:29:14 +0000</pubDate><link>https://news.ycombinator.com/item?id=37833356</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=37833356</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=37833356</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Who is hiring? (November 2021)"]]></title><description><![CDATA[
<p>Welder | Backend Engineer | Prague, Czechia | Full-time | Onsite/Remote | <a href="https://getwelder.com" rel="nofollow">https://getwelder.com</a><p>We’re looking for a senior backend engineer with at least 5 years experience. Someone who’s accountable, fun to be around and worked as a freelancer or at a startup before.<p>Welder is the place to stream, record and repurpose online content accessible to everyone. We love building products that make sense the way we enjoy.<p>Required technologies: Python, Django, Docker, Basic DevOps (CI pipelines, server setup, GCP/AWS)
Bonus technologies: FFmpeg, Postgres performance optimization<p>Reach me at: marek@getwelder.com or <a href="https://www.linkedin.com/in/marek-vybiral/" rel="nofollow">https://www.linkedin.com/in/marek-vybiral/</a></p>
]]></description><pubDate>Tue, 02 Nov 2021 10:41:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=29079339</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=29079339</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=29079339</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Freelancer? Seeking freelancer? (May 2021)"]]></title><description><![CDATA[
<p>SEEKING WORK | Prague, Czech Republic | Remote: Yes<p>Technologies: Python, Django, Flask, Django Rest Framework, TypeScript, Node.js, Postgres, Redis, Docker, Google Cloud (CCP), AWS<p>Email: marek [at] getwelder [dot] com Linkedin: <a href="https://www.linkedin.com/in/marek-vybiral/" rel="nofollow">https://www.linkedin.com/in/marek-vybiral/</a><p>I'm a senior software engineer with over 8 years of experience. I've worked with startups, big companies, and even co-founded a few business. My main focus is on backend development with Python Django but over the years I've touched many different technologies (React, Objective-C, C#, C++, Go, WebRTC, etc.).<p>I love to solve hard problems in simple ways and to get from zero to one as swiftly as possible while not sacrificing quality. To achieve this I always try to deeply understand the business perspective of the product and identify the most important areas to focus on. The combination of management and deep technical skills is what I feel is my biggest strength.<p>I am available for a fixed term contract (up to 3 months) which may be a perfect fit to build your MVP or help your startup right after seed round before you scale up the team. I also have my two friends and colleagues with pretty similar background (senior full stack engineer and product manager/designer) at disposal in case your project is more demanding. Let me know on LinkedIn if you are interested.</p>
]]></description><pubDate>Mon, 03 May 2021 16:12:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=27026906</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=27026906</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=27026906</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Who wants to be hired? (May 2021)"]]></title><description><![CDATA[
<p>Location: Prague, Czech Republic<p>Remote: Yes<p>Willing to relocate: No<p>Technologies: Python, Django, Flask, Django Rest Framework, TypeScript, Node.js, Postgres, Redis, Docker, Google Cloud (CCP), AWS<p>Email: marek [at] getwelder [dot] com<p>Linkedin: <a href="https://www.linkedin.com/in/marek-vybiral/" rel="nofollow">https://www.linkedin.com/in/marek-vybiral/</a><p>I'm a senior software engineer with over 8 years of experience. I've worked with startups, big companies, and even co-founded a few business. My main focus is on backend development with Python Django but over the years I've touched many different technologies (React, Objective-C, C#, C++, Go, WebRTC, etc.).<p>I love to solve hard problems in simple ways and to get from zero to one as swiftly as possible while not sacrificing quality. To achieve this I always try to deeply understand the business perspective of the product and identify the most important areas to focus on. The combination of management and deep technical skills is what I feel is my biggest strength.<p>I am available for a fixed term contract (up to 3 months) which may be a perfect fit to build your MVP or help your startup right after seed round before you scale up the team. I also have my two friends and colleagues with pretty similar background (senior full stack engineer and product manager/designer) at disposal in case your project is more demanding. Let me know on LinkedIn if you are interested.</p>
]]></description><pubDate>Mon, 03 May 2021 16:11:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=27026886</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=27026886</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=27026886</guid></item><item><title><![CDATA[Current Market Valuation]]></title><description><![CDATA[
<p>Article URL: <a href="https://www.currentmarketvaluation.com/">https://www.currentmarketvaluation.com/</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=26831569">https://news.ycombinator.com/item?id=26831569</a></p>
<p>Points: 4</p>
<p># Comments: 0</p>
]]></description><pubDate>Fri, 16 Apr 2021 09:25:22 +0000</pubDate><link>https://www.currentmarketvaluation.com/</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=26831569</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=26831569</guid></item><item><title><![CDATA[New comment by SiNTEx in "Berlin rent cap overturned by Germany's top court"]]></title><description><![CDATA[
<p>In Prague we have a comparable housing problem to Berlin but all the politicians tend to balme AirBnB and real estate investors and they all focus on some kind of market regulation. Mostly just talking about it because they know any strict regulation would be unconstitutional. From the technical perspective the solution is simple. We should just build more houses in big projects like we did 40 years ago which will drive down the unit price and also provide all the necessary infrastructure like public transport and schools. Pretty big portion (tens of percent) of Prague's housing capacity was build during the 40 years communist era. If we could successfully build huge housing projects like Jižní Město (<a href="https://en.wikipedia.org/wiki/Ji%C5%BEn%C3%AD_M%C4%9Bsto" rel="nofollow">https://en.wikipedia.org/wiki/Ji%C5%BEn%C3%AD_M%C4%9Bsto</a>) during this awful regime whit very limited economic resources then it's surely doable now and in much higher standard. We just lack the political will to think longer then next 4 years till the next elections and  to solve the problems instead of just talking about it and blaming someone else.</p>
]]></description><pubDate>Thu, 15 Apr 2021 09:06:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=26817980</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=26817980</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=26817980</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Who wants to be hired? (April 2021)"]]></title><description><![CDATA[
<p>Location: Prague, Czech Republic
Remote: Yes
Willing to relocate: No<p>Technologies: Python, Django, Flask, Django Rest Framework, TypeScript, Node.js, Postgres, Redis, Docker, Google Cloud (CCP), AWS<p>Email: marek [at] getwelder [dot] com
Linkedin: <a href="https://www.linkedin.com/in/marek-vybiral/" rel="nofollow">https://www.linkedin.com/in/marek-vybiral/</a><p>I'm a senior software engineer with over 8 years of experience. I've worked with startups, big companies, and even co-founded a few business. My main focus is on backend development with Python Django but over the years I've touched many different technologies (React, Objective-C, C#, C++, Go, WebRTC, etc.).<p>I love to solve hard problems in simple ways and to get from zero to one as swiftly as possible while not sacrificing quality. To achieve this I always try to deeply understand the business perspective of the product and identify the most important areas to focus on. The combination of management and deep technical skills is what I feel is my biggest strength.<p>I am available for a fixed term contract (up to 3 months) which may be a perfect fit to build your MVP or help your startup right after seed round before you scale up the team. I also have my two friends and colleagues with pretty similar background (senior full stack engineer and product manager/designer) at disposal in case your project is more demanding. Let me know on LinkedIn if you are interested.</p>
]]></description><pubDate>Mon, 12 Apr 2021 09:30:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=26777470</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=26777470</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=26777470</guid></item><item><title><![CDATA[New comment by SiNTEx in "Show HN: Welder – Record high-quality remote interviews"]]></title><description><![CDATA[
<p>That would be super helpful to us. Can you please hit me at marek@getwelder.com? We could schedule a call or just text chat about it if that's ok for you.</p>
]]></description><pubDate>Fri, 22 Jan 2021 14:39:58 +0000</pubDate><link>https://news.ycombinator.com/item?id=25871982</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=25871982</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25871982</guid></item><item><title><![CDATA[New comment by SiNTEx in "Show HN: Welder – Record high-quality remote interviews"]]></title><description><![CDATA[
<p>We store unuploaded chunks of the video in IndexDB in a browser. Btw if plan to do something similar beware of the fact that storing a lot of blob references in IndexDB can cause some wired issues in Chrome a some blobs can get corrupted. Our workaround is to store it as byte arrays.</p>
]]></description><pubDate>Fri, 22 Jan 2021 14:34:14 +0000</pubDate><link>https://news.ycombinator.com/item?id=25871936</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=25871936</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25871936</guid></item><item><title><![CDATA[New comment by SiNTEx in "Show HN: Welder – Record high-quality remote interviews"]]></title><description><![CDATA[
<p>Thank you! We use Twilio for our WebRTC infrastructure with VP8 simulcast setup so we do use SFU but only through Twilio. We were considering how to get rid of Twilio and quite extensively researching what would it mean to run our own WebRTC infra as Twilio costs are pretty high (sometimes up to 1/4 of our revenue).   But operating multiple servers around the word to act as SFUs or creating them on demand in e.g. GCP and paying the cloud tax in form of extremely expensive egress costs doesn’t seem to be the right solution either. Other service providers have very similar pricing, that's why we will stay with Twilio for now.</p>
]]></description><pubDate>Fri, 22 Jan 2021 13:09:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=25871349</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=25871349</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25871349</guid></item><item><title><![CDATA[New comment by SiNTEx in "Nuclear lighthouses built by the Soviets in the Arctic [video]"]]></title><description><![CDATA[
<p>Can’t we keep it underground just till we have space rockets so reliable and cheap so we can dispose all the nuclear waste to space? Definitely not something we are even remotely able to do now but when talking about hundreds and thousands of years it seems possible.</p>
]]></description><pubDate>Thu, 07 Jan 2021 23:43:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=25679278</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=25679278</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25679278</guid></item><item><title><![CDATA[Jeff Bezos “Everything I know” (2009) [video]]]></title><description><![CDATA[
<p>Article URL: <a href="https://www.youtube.com/watch?v=-hxX_Q5CnaA">https://www.youtube.com/watch?v=-hxX_Q5CnaA</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=25101554">https://news.ycombinator.com/item?id=25101554</a></p>
<p>Points: 6</p>
<p># Comments: 0</p>
]]></description><pubDate>Sun, 15 Nov 2020 14:42:53 +0000</pubDate><link>https://www.youtube.com/watch?v=-hxX_Q5CnaA</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=25101554</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25101554</guid></item><item><title><![CDATA[New comment by SiNTEx in "Ask HN: Who wants to be hired? (November 2020)"]]></title><description><![CDATA[
<p>Location: Czech Republic<p>Remote: Yes<p>Willing to relocate: No<p>Technologies: Backend, Python, Django, JS/TypeScrip, GCP<p>CV: <a href="https://www.linkedin.com/in/marek-vyb%C3%ADral-8352b956/" rel="nofollow">https://www.linkedin.com/in/marek-vyb%C3%ADral-8352b956/</a><p>Email: marek@getwelder.com<p>Looking for contracts so I can continue to fund our bootstraped company (<a href="https://getwelder.com" rel="nofollow">https://getwelder.com</a>). Experience with Fintech, Credit Cards, Online video, Ecommerce...</p>
]]></description><pubDate>Mon, 02 Nov 2020 21:38:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=24973732</link><dc:creator>SiNTEx</dc:creator><comments>https://news.ycombinator.com/item?id=24973732</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=24973732</guid></item></channel></rss>