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dejv

2,312 karma · joined July 17, 2009

Indie software developer since 2005. Fiddling with projects, freelancing from time to time and basically trying to find a way to not ever have another proper job again.

If I am not writing software I am making wine or tend vines on my organic farm.

E-mail: davidfilip@gmail.com

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dejv··on Ask HN: Whatever Happened To Freelancing?
Yes, but opening UK bank account is not that easy without your presence there.
dejv··on Ask HN: Has anyone successfully started their career over in their 30s?
I had a modest success when I was 19, struck a gold as an early employee and got rewarded nicely, quit the company, droped out of the school and started to create small side projects. Then when 4HWW book appeared I started travel around the world and just enjoyed the life, drink beers and did all the digital nomadic cliche stuff long before the term become well known.

Then my 30s showed up. Money long gone, pasive income from my side projects dried up as I was not paying much attention to them. At that stage I was living in 250 square feet appartment with my new girlfriend, had about 50 USD in my pocket, resume consisting of some small random project, zero team experience during past decade and idea that I might become farmer after all. Then one day my GF showed up and told me that in couple of months we are going to have a baby.

Well, what can you do, right? Big tech was (and probably still is) out of question, but I was happy to work with startups and just build the resume, going from random line programmer to lead developer within few years. At the end, nobody cares what you did 15 years ago, current experience is what matter.

I am in my late 30s now, things turned out great after all. Got two kids, girlfriend became my wife and I am leading mission critical projects for international banks both as an architect, tech lead and consultant.

There is no sure and simple way in turning things out for better. You might get lucky, you might get not. Take your time and think about what you want to do, just be sure that you can always start again, just don't give up.

dejv··on The Pretty Good House
Czech Republic
dejv··on The Pretty Good House
I am just about to start construction of 750 sqft home this year. We decided to go with cross laminated timber building. Manufacturer builds walls inside their factory, bring it to construction site and put it together within day or two. The main disadvantage is that it just a "bit" more expensive.
dejv··on Sunken Greenhouse
There is also Trail Break Farms channel[1] that document his experience with growing inside this greenhouse.

[1] https://www.youtube.com/@trailbreakfarms/videos

dejv··on Is wine fake?
Inheritance tax force many to sell. Still it is not like a lot of plots hits the market.
dejv··on Is wine fake?
Unless they are in Burgundy. 10million an acre for some nicer, but not top, parcels are not uncommon.
dejv··on Is wine fake?
There are very few wines that could be aged , most commercial bottles are good for 1 to 3 years bo matter how well you store them. Even wines from respectable producers are often going to start being broken in 10 years or so. Wine is living thing and the biological and biochemical processes are going to ruin the liquid at some point. Wines that could survive 20, 30 or more years are exception not rule and you need to know which one to pick.
dejv··on Ask HN: In 2022, what is the proper way to get into machine/deep learning?
A lot of people here recommend fast.ai which is solid, but not really that useful if you want to do research.

I would start with math foundations: basic linear algebra, stats, probability and some analysis. CS undergrad level is plenty of math for start.

Then I would try to understand back prop on intimate level: learn how to calculate gradients, maybe take a look on how autograd works as well.

Then you should know a bit to pick your next steps by yourself.

dejv··on Open Soil Spectral Library
If you want to get some serious machine I would look for NirScan Nano. It is not cheap (~1,5k) but the performance is solid. Another possible route is getting mems based spectrometry sensor from Hamamatsu (~600) but building well performing acquisition board is not that simple and evaluation board is quite expensive.
dejv··on Discworld on Page and Screen, Part 1: Serious Comedy
Guards! Guards! is great. I would also add Interesting times for more prototypical Discworld and also Truth is pure gold.
dejv··on The mesmerising murmurations of Europe’s starlings
There are many ways: in past it was mostly nets and people walking around field and making noise when flock come close. Now it is combination of automatic noise guns installed inside the vineyard and even computer vision systems that aim flocks with laser pointers.
dejv··on The mesmerising murmurations of Europe’s starlings
They are pretty, but also nightmare for us wine makers. They come every autumn just in time of harvest and they can eat half hectare of grapes in matter of minutes.
dejv··on Tokamak Energy sets a temperature record among commercial fusion companies
They do have great Youtube channel: https://m.youtube.com/channel/UCuSlFJbBUIj1zfJLRnGXSow

Unfortunately it is not as active as it once was, but their old videos are very interesting.

dejv··on Ask HN: Should I give up and get a job?
We are same age and we were on similar trajectories, I just made the jump few years ago and got the job, quickly took a tech lead role and currently flirting with being mid level manager.

Well, the jump was easy. If you were able to survive two decades being indie you are going to survive having job and maybe even thrive in that environment.

Should you do it, or maybe even should I did it? I don't know. I do miss old days, but there is something in being paid each month without chasing next gig.

But you know what? You can try it for few months and see by yourself. I dit that and, hey, old punk is now climbing career ladder.

dejv··on Travel is no cure for the mind (2018)
I guess it depends, I used to travel a lot when I was in my 20s (I guess it would add to about 5 years spread over 8 years period) and now after close to 10 years being home it just feel like it never happened: sure I do have some memories, stories and some connections on Facebook to people I haven't seen in many years. Don't get me wrong it was fun and interesting, but I guess thats it.

But maybe thats me, when I was traveling I was feeling happy and excited, but I feel same just walking in the park outside my home and actually looking forward to just get my coffee at usual place and spend time programming. Basically same routine, now I just have more comfortable setup.

dejv··on Reduced-hours software development engineer position at Amazon
No, Czech republic. Tech lead/architect doing stuff for banks. I guess the market is so hot right now that companies have to be more flexible.
dejv··on Rustenstein 3D: Game programming like it's 1992
There are few articles on 0fps blog: https://0fps.net/2012/01/14/an-analysis-of-minecraft-like-en...

Readable implementation (in C) is this: https://github.com/fogleman/Craft

dejv··on Reduced-hours software development engineer position at Amazon
Maybe thats European thing, but this is quite common offer for developers. I guess companies do not advertise this option, but more often than not they will accept it. When thinking about my team (8 developers) I think there are maybe two people with 9 to 5 x 5 days a week arrangememt.
dejv··on The history of the end of poverty has just begun
What I want to say, there is poverty and poverty.

It is very different being poor in functioning community of similarly poor people, where people barther among themselves and being poor in developed country, where you are isolated from wide society or living in society with widespread drug/alcohol/mental illness problems in debt and no way out.

All the fantasy of cotagecore, simple life, #vanlife, home steading is basically trying to get into former type of being poor: not being stressed by work that much, having little societal asspiration, living with other similary minded people (even if that means watching each other posts on social media) and such.

dejv··on The history of the end of poverty has just begun
I was born on perifery of comunist country during at the time when regime started to colapse. All the people worked either at local state farm or one of few factories that were around.

We all were equaly poor and even if you had money there were few things you can buy anyway. You had a house (build by yourself) and food. If you were in good standing with government, you might get a chance to go to international holiday (in other eastern bloc country). Going anywhere in west would be totaly cost prohibitive even if they allowed to do it. Buying coffee in Vienna (closest big city) would easily cost 3 months of your paycheck.

So you were poor and you know you are poor, but it doesn't matter that much. 30 years later you can easily spot the difference in what does it means to be poor in developed economy: easily available loans and brain drain destroyed the periphery communities as whole. Now people are poor, they know it and they can compare to more well off everyday.

dejv··on A “Sideways” supply response in California winegrapes
Yes, he actually explain that during tasting: when you smell white wine you start to be describing it by white wine vocabulary, when you smell red wine you start using those. The case of being skilled taster is being able to recognize when something is off.
dejv··on A “Sideways” supply response in California winegrapes
My pet peeve with all of those studies is who they consider as an expert. It is usually adhoc random group of enology students.

There is great video of guy trying to reconstruct red wine from whites + coloring and serving it to master of wine: https://www.youtube.com/watch?v=sN83j5ZOUm0

And there are a lot of other tricks and blind tasting sessions in his channel. This is how expert taster works.

dejv··on Ask HN: Resources for “Learning” Manufacturing?
There is "Building Prototypes" [1] series by Dan Gelbart on YouTube which is pure gold for anybody that wants to learn how building mechanical things, mostly precision/instrumentation things.

Part 12 for plastic forming and casting.

[1] https://www.youtube.com/watch?v=xMP_AfiNlX4&list=PLSGA1wWSdW...

dejv··on The Czech Play That Gave Us the Word ‘Robot’
When Capek created word robot using robotnik as a base, the term was not used for close to 200 years. Czech translation of robotnik in Polish would be delnik.
dejv··on The Czech Play That Gave Us the Word ‘Robot’
Robota was involuntary work for feudal lord during middle ages. The class of people required to do such work were called robotnik (in singular).
dejv··on Ask HN: Is Anyone Here a Professional Baker?
My good friend is owner of artisanal bakery (as well as baker herself).

What I can see she is happy to hire people without prior experience and teach them on spot.

Is that good career? It depends on who will ask. Baking is blue collar job: pay is low and hours are long. For some it might make sense, for average tech worker probably not.

dejv··on Open Source Tractor
This brings back memories. I grew up around smallholding farming during comunist regime when time was plentyful, but it was near to impossible to buy tractor for personal use. Almost every familly owned DIY home-grown tractor built from some old diesel motor donated from who knows where and scrap metal.
dejv··on Valneva and Pfizer announce Phase 2 study for Lyme disease vaccine candidate
Yeah, got lyme disease one month ago and there was no rashes as well. Good idea is to send the tick to laboratory for testing, it will take quite some time (week or two) but better than nothing.
dejv··on Ask HN: I feel trapped in my job and city
Well, there are very few careers that pay as much as being quant and all of them are going to be somehow similar. So lets be honest, you either get over it or take paycut be it permanent by switching careers or temporal as it is going to take time to build new consulting service or business (anything else is hardly going to pay your current salary) and you might never be able to get back to amount of money you are making right now.
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