Vladimir Kosenko

Hey everyone! 👋 Here's a quick intro: - Dad & husband. - Once upon a time, I was backpacking in Asia, sleeping on beaches - $20k grant winner for @desoprotocol 🚀 - Co-founded a top-3 Russian crypto exchange (we learned a lot in the 2018 crash – a $1M lesson!). - Built 4 AI SaaS projects in 2023. - Random fact: I used to be top 5 in Warcraft 3 2v2 EU. ⚔️ Let's connect!

Trading crypto? I've been there, lost money too. Now I'm testing my own trading algorithms. So far, promising results. 6 trading pairs, FREE buy/sell signals. (my account wasn't stolen btw :D) Link in the comment 👇

Join free telegram channel - t.me/cointrapper_si…

Hey, folks! Recently, we’ve been working extensively on an algorithm for trading in the cryptocurrency market and have achieved good results. Test it out now and see the difference—no strings attached! 💹 Link in the comment 👇

@denicmarko linkedin.com/in/vkmuvon/

Do you have a LinkedIn profile? → Share the link and let's connect.

Struggling with complex UI interactions in React? State machines are your answer! They provide a structured way to handle different states & transitions. Check out this traffic light example using XState

Ever wondered how some JavaScript libs seem to magically modify object behavior? It's often thanks to Proxies! Proxies are a powerful feature in JavaScript that allows you to create a "trap" around an object, intercepting and customizing operations In the example below, the handler object defines a set trap. Whenever a property is assigned to the person object (which is a Proxy), this trap is invoked. We check if the property is 'age' and if the value is a number. If not, we throw an error

Want to work with array elements more efficiently? Destructuring and the rest operator can help you manipulate arrays with elegance and precision. Destructuring isn't limited to objects. It's incredibly useful for working with arrays, especially when you need to extract specific elements or handle a variable number of items. Combine it with the rest operator for even more flexibility.

React apps scaling in the cloud? Imagine your React app suddenly goes viral. Users flood in, and your server buckles under the load. That's where load balancers step in. They act as traffic controllers, distributing incoming requests across multiple server instances. This not only prevents overload but also ensures high availability. Here's a simplified breakdown of a common load balancing algorithm: Round Robin. It's like a carousel, evenly distributing requests to each server in turn

Do you remember what your first salary was when you entered the IT/Tech field? What were you doing? I remember that in school, I was asked to create a website for a photography contest. They paid me 3 (three) dollars :D

Think you’re only paying 20% APR? Think again. Credit card interest compounds daily, turning small debts into big ones Let’s say you owe $2,000 with a 20% APR Most people assume they'll pay $400/year in interest (20% of $2,000) Wrong Since interest is calculated daily, it compounds like this: By the end of the year, you’ll owe closer to $442 in interest, not $400 That’s an extra 10%+ just from compounding - Pay off your balance before interest kicks in - Make extra payments

Ever wondered how an ATM gives you cash? 🏦💸 It’s not just a metal box—there’s a whole system working behind the scenes. 1/ Insert card ➡️ ATM reads chip & authenticates 2/ Enter PIN ➡️ Encrypted & sent to bank 3/ Bank checks balance + fraud rules ✅ 4/ ATM gets approval & dispenses cash 5/ Transaction logged, balance updated Some ATMs even work *offline* with limits. Next time you withdraw cash, remember—it's fintech in action!

Where are prepaid cards useful? ✅ Payroll (for employees without bank accounts) ✅ Budgeting (prevents overspending) ✅ Travel (safer than debit/credit cards) ✅ Government aid (distributes benefits) Downsides? ❌ Fees (reloading, transactions, inactivity) ❌ No credit score impact ❌ Some have withdrawal limits Would you use a prepaid card for budgeting? Let’s discuss! 👇

What’s the difference between a prepaid card and a debit card? One can overdraft, the other can’t Prepaid Card: You load funds before spending. Once the balance is gone, it stops working. Debit Card: Pulls money from a bank account. Can overdraft if the bank allows it. 👇

Why do some NFC payments work even when your phone is off? Let’s break it down NFC cards have **passive chips** (no battery), while phones have **active chips** (powered). Your card gets power from the payment terminal via **electromagnetic induction**—no battery needed! NFC is **more secure** than magnetic stripes because it uses **dynamic authentication** (EMV + tokenization). 👇