Latest posts
Good dev knows
27 Aug, 10:59
forwarded from @lifebypavlopoliakov
🛰 Я придбав Starlink!Ще поза-вчора вранці я не збирався купляти ніякий Starlink. Але, протягом дня, до мене звернувся друг та сказав що треба придбати Starlink, бо вони зараз в Німеччині по знижці і можна придбати тільки один в одні руки!Ви напевно здогадуєтесь що далі відбудеться з цією штукою. Далі вона поїде в 🇺🇦 Україну, її кудись прикрутять та піднімуть у повітря, щоб показати їй світ. Це досить романтично 🫶💥!А що я хочу від нас, від сумлінних інженерів. Давайте викупимо цей Starlink, для цього потрібно всього 199€. Я дам свої 25€. Якщо ми це зробимо, то може вдасться +1 Starlink придбати.І прошу вас доєднатися: ▫️PayPal: https://www.paypal.com/paypalme/PavloPoliakov ▫️Mono: https://send.monobank.ua/jar/7z7Wtu39hHКожна копійка це внесок! Не стримуйтесь.Дякую 🤝 Разом переможемо 💙💛
Good dev knows
1 Jul, 09:33
forwarded from @lifebypavlopoliakov
Good dev knows
1 Jul, 09:33
✨ Crash Course: Storytelling для інженерів ✨📅 9 — 13 липня 20261️⃣ Чому історії працюють Розберемо, як мозок сприймає історії, чому вони допомагають пояснювати складне і на що аудиторія реагує автоматично.2️⃣ Як будувати історії Попрацюємо зі структурами, фреймворками та практикою пояснення технічних ідей так, щоб вас справді розуміли. Окремо подивимось, як AI може допомагати у storytelling.3️⃣ Як використовувати storytelling для впливу Поговоримо про самопрезентацію, кар’єрний наратив, демонстрацію impact’у. Які ідеї легше зрозуміти і як "продати" свою ідею.На першу ітерацію ми збираємо справді маленьку групу, лише ~20 людей. (на сайті плутанина із цифрами)👉 Дізнатись більше про курс та доєднатися!FwdaysCrash Course: Storytelling для інженерівНавчіться доносити ідеї так, щоб їх підтримувалиGood dev knows
1 Jul, 09:33
Good dev knows
1 Apr, 09:43
We have one ticket left for: https://fwdays.com/event/tech-lead-course-5 .Code LIFE_BY_PP gives you 10% discount.FwdaysCrash Course: Технічне лідерствоКурс для технічних лідерів: навички, архітектура, софт скіли.1,070Open in TelegramGood dev knows
9 Mar, 13:52edited
Hi friends,For those who have missed it, I now regularly post in my 🇺🇦 channel: https://t.me/LifeByPavloPoliakovFor the rest who might be interested, we have scheduled the fifth iteration of the Technical Leadership Crash Course: https://fwdays.com/event/tech-lead-course-5Where you will learn how to confidently navigate the world when coding agents do what we used to do before: they write code. 💡Hint: yes, they can write code, but they cannot do technical leadership (yet?).🚀 Join the course and learn what tech leaders do in the age of AI agents.TelegramПавло Поляков: технічне лідерство й не тільки15+ років в IT. Principal Engineer у найбільшому каршерінгу Європи. Пишу про технічне лідерство. І про те, що на мене впливає і формує мене. Instagram: https://www.instagram.com/pavlopoliakov Контакти: @PavloPoliakovGood dev knows
21 Jan, 11:33edited
Hi friends ☀️,I want to start this year (it’s already the 21st, huh?) with a bold move!Over the year(s) of posting here in English, I’ve noticed a few things: 1️⃣ You are awesome, because you’re still here and reading my content 2️⃣ I like creating content and sharing my findings and conclusions 3️⃣ This channel is slowly dyingBefore 2022, I ran this channel in Russian. After the full-scale invasion, I realized that there was no point for me in promoting Russian culture publicly by using the Russian language, so I switched the channel to English. It worked. Somehow. But it’s been working worse and worse over time. I don’t see the level of engagement I’d need to continue posting in English. Apparently, Telegram is not the best place to organically grow an English-speaking community, unless you’re a crypto bro.However, as I already said, ✨ you are awesome ✨. I believe there areTelegramПавло Поляков: технічне лідерство й не тільки15+ років в IT. Principal Engineer у найбільшому каршерінгу Європи. Пишу про технічне лідерство. І про те, що на мене впливає і формує мене. Instagram: https://www.instagram.com/pavlopoliakov Контакти: @PavloPoliakovGood dev knows
7 Jan, 11:51edited
📹 Interesting talk on how the ROI on the AI adoption might be measured in tech companies.💡My insights1️⃣ AI can lead up to 25% increase in productivity (10% median)2️⃣ AI works best if your workload is following the best SE practices (tests, modularity, types)3️⃣ You can measure AI adoption effect just using the git history and comparing past vs present4️⃣ They provided example of one company of our size, after AI adoption number of PR grew up 📈 , but code quality decreased 📉 Rework type of code changes increased x2.6 (a lot) Effective output gain only +1% 🤯What does it all mean? 🤔It does not mean that we will stop using AI, but that we will use it more consciously and improve in the areas where we are lagging. The fact that code is now cheaper is not the final answer. We have gained a new tool, and this tool helps (as proven by +25%), but achieving those +25% (orYouTubeCan you prove AI ROI in Software Eng? (Stanford 120k Devs Study) – Yegor Denisov-Blanch, StanfordYou’re investing millions in AI for software engineering. Can you prove it’s paying off? Benchmarks show models can write code, but in enterprise deployments ROI is hard to measure, easy to bias, and often distorted by activity metrics (PR counts, DORA)…Good dev knows
27 Nov 2025, 14:05
Technical leadership crash-course #4Good news ⚡️If you want to boost your career and knowledge by taking the course I mentioned above, but for some reason you don’t want to apply to Free2move or travel to 🇹🇳 Tunisia, there’s a solution!In just one week, on 04.12, my friends at fwdays and I are launching the fourth batch of our Tech Leadership crash course. It lasts only three days, but you’ll get hands-on experience performing the role of a technical leader — and the confidence that comes with it.Here are just some of the reviews from past participants: Коли ви думаєте що все знаєте про лідерство, архітектуру, презентації і зустрічі, то ви точно помиляєтесь. Цей курс звернув мою увагу на більш глибоке вивчення вказаних вище тем. Практична частина підібрано вдало і дозволяє краще закріпити матеріал.Цей курс це значний поштовх на шляху до того щоб стати лідом. Він концентрує вFwdaysCrash Course: Технічне лідерствоКурс для технічних лідерів: навички, архітектура, софт скіли.Good dev knows
27 Nov 2025, 12:37
🇹🇳 L&H Tunisia 2025: Insights #2Final part of my Tunisian tald. Let's talk about the product creation and my conclusions.🛠 Hack PartAbout two weeks before the event, I shared a PDF document with the assignment with the teams. We defined one task, described how it would be evaluated, and teams were expected to deliver an MVP within that week. The topic of our assignment was the following: imagine how Free2move may utilise ChatGPT Apps to improve our customer's experience.1️⃣ When we were planning this event, I thought the teams would self-organize before the on-site part and maybe even start working on the assignment, as it would give them more time to achieve a better result. It turned out that it didn't happen the way I expected. And that is fine; it confirms my observation from the AI hackathon: people are different, and there is no reason to expect proactive behavior
Good dev knows
26 Nov 2025, 15:42
🇹🇳 L&H Tunisia 2025: Insights #1Let's continue with the Tunisia topic. As I mentioned in the previous post, the entire last week was dedicated to technical training in Tunisia, which I co-organized and also led. I'd now like to share what I learned from that experience.🇹🇳 TunisiaThe first topic is the country and culture itself.1️⃣ We received tremendous support from our local office in organizing the on-site training. And it truly helped. All of our colleagues were very friendly and willing to assist. That felt great. 2️⃣ It seems they have a cultural tradition of having coffee, tea, or drinks at 4:00 PM. Therefore, some snacks and drinks are delivered to the office each day, and people chat and eat a little. What a great tradition! 3️⃣ GDP per capita in Tunisia is even lower than in Ukraine, and you can see it on the streets. While the food (restaurants) is cheap and tasty
Good dev knows
25 Nov 2025, 10:44
🇹🇳 Learn & Hack Tunisia 2025I spent the whole last week in Tunisia. Yes, in Tunisia, Africa, and not as a tourist, but on a working trip. At the beginning of the year, I suggested to management that we organize technical training (like we used to have before; one that lasts several weeks where we only spend one or two days per week learning new stuff). But I got a counter-offer instead: What if we gather everyone for a week in 🇹🇳Tunisia (we have an office there) and, actually, create something?So, I drafted a new concept, which I called "Learn & Hack Tunisia 2025." Gladly, it was supported, and we made it happen 📈. Here is what it was and what I learned.Before you create a plan, you had better define what you want to achieve with it. Together with tech management, we defined three main goals: 🤝 build a community of tech leaders 💼 solve real business problems 🤖 leverage AI
Good dev knows
11 Nov 2025, 12:25edited
⚙️ Tech Leadership Crash Course #4I’m happy to announce that this year we are holding the 4th Tech Leadership Crash Course training. It will take place in about one month, on December 4th, 6th and 8th. This is a great opportunity to set yourself up for success in 2026.During the course, we will learn and practice three core skills that every tech leader in any company and any domain should possess: Leadership, Hard Skills and Soft Skills.You will not only learn something new, but more importantly, you will apply what you learn right away. This hands-on approach helps the knowledge stick and allows you to use these new skills the very next day. After the course, you will find yourself a confident tech leader who knows what to do and why.The course is battle-tested, and participants from previous batches rated it as high as 9.5/10 📈. Please also take a look at their feedback onFwdaysCrash Course: Технічне лідерствоКурс для технічних лідерів: навички, архітектура, софт скіли.Good dev knows
7 Nov 2025, 08:36edited
🤖 AI to Explain the ProjectHere’s an interesting concept showing how AI can help us understand software better.When you have a GitHub repository, you can replace the github part of the URL with deepwiki, and that tool will index your repository, generate detailed documentation, and even draw diagrams 📊.Here’s an example using my small repo: Original: https://github.com/PavelPolyakov/grammy-with-tests DeepWiki version: https://deepwiki.com/PavelPolyakov/grammy-with-testsThe result looks quite good to me, though it was a small repository. On the DeepWiki homepage, you can also explore some popular repositories.I believe this tool could be really helpful in situations like ours — when a team needs to maintain and support a workload that was developed elsewhere. Unfortunately, I can’t run DeepWiki against our corporate repositories 🤷.💙💛 Now, back to the fundraising!ThanksGitHubGitHub - PavloPoliakov/grammy-with-testsContribute to PavloPoliakov/grammy-with-tests development by creating an account on GitHub.Good dev knows
6 Nov 2025, 08:00edited
Hi everyone 💙💛Once again, I’m joining a fundraising initiative organized by my friends from the volunteer organization @tazyky.ua. They have already delivered over 600 vehicles to the Armed Forces of Ukraine (AFU)! 🚙💪This time, the team’s goal is to raise 666,000 UAH (yes, it’s our Halloween-themed fundraiser 🎃). My personal goal is to collect 10,000 UAH, and I’d be incredibly grateful if you joined me in supporting this cause.So far, I’ve raised about ~6,600 UAH and 80 EUR. We still need a few heroes to help me to close this campaign ✅🚚 Why vehicles? Vehicles are truly a consumable resource in wartime — they’re constantly on the move, often under fire, and play a crucial role in evacuations, logistics, and delivering aid and supplies to the front lines. Each new car literally helps save lives and bring victory closer.Every small contribution counts and helps bring asend.monobank.uaБезпечний переказ коштівНадсилайте безкоштовно та безпечно коштиGood dev knows
23 Oct 2025, 11:05
📋 Three ThingsThis week, I want to share three random things I found cool recently.1️⃣ The first is an awesome scratchpad called Antinote. It costs $5 (the first week is free), and it’s worth it.I believe you also sometimes need to copy chunks of text here and there and maybe do some small manipulations with it. What do you use for that purpose? I used to rely on Sublime Text, but Antinote is even more lightweight and comes with some great features built-in, no extra plugins needed.2️⃣ I recently finished listening to the book Musicophilia by Oliver Sacks.In this book, the author explores how music is integrated into our brains and stimulates us in different ways. #longstoryshort — it’s integrated a lot. One interesting point he mentions is that music can actually improve your work and help you stay focused. I often listen to something while working, and I agree, it reallyYouTubePublic Lecture From Earth to the Fabric of SpaceTimeEnjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.Good dev knows
17 Oct 2025, 11:41
🔄 What goes around, comes aroundAlways code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live. Do you know this quote? Well, it just happened to me.When I joined car2go, one of the first tasks for our team was to introduce a new search. The old one was based on the shared database, essentially a complex SQL query. It worked, but there was a bigger problem: this setup blocked the introduction of microservices and new teams.So we fixed it. We introduced Elasticsearch and built two Node.js + Fastify services: customer-search (for searching), customer-search-feeder (for listening to updates and feeding them into Elasticsearch).I still remember the complications with upserts and message ordering. In the pre-GPT era, I hacked together a script in Painless to decide what needed to be updated or not. The first insight from that work?www.elastic.coIntroduction to Painless | Elastic DocsPainless is a secure, performant, and flexible scripting language designed specifically for Elasticsearch. As the default scripting language for Elasticsearch,...Good dev knows
10 Oct 2025, 09:25edited
🧹 Clean Your Mac (or not)Recently on Twitter, I saw a mention of a CLI tool that promised to free up space on my Mac. Disk space is definitely one of my pain points. Even with 500 GB, I often get warnings that there’s no space left and that I need to delete something.The tool is called Mole, and it’s open source on GitHub. There’s only one problem: security. I’m a little hesitant to run random CLI tools that have full access to my file system. With Mole, I had double doubts — it’s called “Mole,” and it comes from a developer in 🇨🇳China. That sounds a little suspicious, doesn’t it?At first, I thought: if they were developing and distributing spyware, they would probably try to hide it better instead of being so straightforward. But we live in a meta-ironic world, and maybe they’re playing on a different level, so people like me end up installing “Mole from China” on theirGitHubGitHub - tw93/Mole:🐹 Clean, uninstall, analyze, optimize, and monitor your Mac. Free open-source CLI, plus a native Mac app. - tw93/MoleGood dev knows
3 Oct 2025, 08:18edited
🙎 Face Liveness CheckRecently, I worked on adopting a new technology, face liveness check, and I’d like to share my findings with you.You probably know that many companies require their customers to go through a KYC (Know Your Customer) process. It used to be done via a video call, but now it’s mostly asynchronous and automated. Usually, you have to upload some form of ID and take a selfie. Of course, there are 🦹 bad actors who try to bypass verification without doing it properly (identity fraud). So the big question is: how can we reliably validate that there’s a real person in front of the camera?It turns out there are not only solutions from specialized identity verification providers like Jumio or Onfido, but also a solution from AWS. And the best part — you can integrate it just like any other AWS service (S3, DynamoDB, etc.)! 🎥 Check out the demo. AWS checks if it’s a realYouTubeValidate live users from spoof attacks with Amazon Rekognition Face Liveness | Amazon Web ServicesWatch this demonstration video to see how Amazon Rekognition Face Liveness analyzes a short selfie video to detect spoofs presented to the camera, such as printed photos, digital photos, digital videos, or 3D masks, as well as spoofs that bypass the camera…Good dev knows
26 Sept 2025, 12:35edited
🤖 Force ChatGPT to use PythonDid you know that LLMs are often bad at math? When they try to calculate purely based on model weights, they can easily slip. The good thing is that modern models often try to detect when they should use proper tools for math. For ChatGPT, that tool is Python.And you can do it yourself by simply adding “use python” to your prompt. ChatGPT will then write a script, execute it, and share the result. You can even check the script to verify the logic.For example: What shall be my running pace if I run 4 minutes, then walk 1 minute. So that I finish 10k in 55 minutes? use pythonPretty neat, right? But here’s something even cooler. Today I learned that ChatGPT can also use Python to plot simple charts — and that’s super handy.For example: Plot this to the chart:Jan 2025 Running 13 Feb 2025 Running 12 Mar 2025 Running 13 Apr 2025 Running 13 May 2025
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