Andrii Yefymenko

I completed the third module (Persistence) of the iOS Lead Essentials program 🚀! Here's a summary of what I learned so far 👇 - The fundamentals of good system design and architecture. How to think, design, and draw diagrams like a software architect. - Networking best practices to develop, maintain, and test a clean networking layer in iOS apps with key frameworks such as URLSession, URLProtocol, Decodable, and third-party code. Also, how to work effectively with backend teams. - Persistence best practices to effectively develop, maintain, and test a clean persistence layer in iOS apps using URLCache, CoreData, FileManager, Codable, and other key persistence frameworks. Click to see more: https://lnkd.in/eSV24CAX

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Our Sylius Polish Community Meetup lineup also features Tomasz Kowalczyk, a seasoned Software Architect and Consultant with over 15 years in the IT industry. Tomasz has spoken at over 20 conferences and authored several popular open-source libraries in PHP. His passion for architecture, functional programming, and API design has guided many through the intricacies of the tech world. 🌎 In his talk, "Modernizing Legacy Projects", Tomasz will cover strategies for diving into and improving upon legacy systems - a situation familiar to many. He will offer practical advice on ensuring that changes affect the right parts of an application without any complications, how to isolate and refine specific code segments, and then integrate them back into the main system. 💡🔄 👉 Learn from Tomasz expertise at https://lnkd.in/gAmMKnY9

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Soon, on May 8th, we're gathering at WarsawJS Meetup #114, which will take place at the Packhelp headquarters. We've prepared a truly exceptional agenda for you with three incredibly interesting lectures! 🚀 👨‍🏫 Tomasz Ducin — Back in the game: Recent Revolutionary Changes in Angular 👨‍🏫 📝 Description: Angular has been perceived as a rather complex framework by some, yet it's used massively by enterprise-scale systems. Whether we agree with the criticism or not, the framework is undergoing a monumental transformation. In recent months, Angular is experiencing a period of frequent and significant updates and - at least considering previous years of stagnation - groundbreaking changes. These include not only the features, public API and architecture, but also to the mental models that developers come up with. 👨‍🏫 Michał Trojanowski — Securing Single Page Applications Using The Token Handler Pattern 👨‍🏫 📝 Description: Single Page Applications appear simple at first sight. Web developers provide a superb user experience, and it is also relatively easy to implement token-based security in the browser. Yet this is against current best practices for browser-based apps, and security concerns can become a blocking issue. It is instead recommended to implement a Backend for Frontend (BFF), to reduce browser threats. Yet this often results in the adoption of website technologies to issue secure cookies, which can work against other web architecture goals. In this talk, I will show how a separation of web and API concerns can give you the best choices. In the talk, I will present the Token Handler pattern — Curity's variation of the Backend For Frontend approach. I will show the open-source projects we created to facilitate the implementation of the pattern. 👨‍🏫 Tobiasz Ciesielski — TailwindCSS - Why you should have it in your project? 👨‍🏫 📝 Description: Tailwind has become the most popular styling framework. More than 8 million downloads per week via npm. Why has it become so popular? What are its advantages and disadvantages? Why did we decide to migrate to tailwind in Prowly? What are the good and bad practices of using the framework? I will answer all these questions. These lectures are not only a great opportunity to gain new knowledge but also to meet other technology enthusiasts! Don't miss out on this event! 😉 Tickets are already available, so don't wait and reserve your spot now! 👇 🔖 Tickets: https://lnkd.in/dhXVXwpf See you at WarsawJS Meetup #114! 💫 #WarsawJS #Meetup #Programming #JavaScript

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📱 Project Showcase: Steal Alert 🛍️ Technology Stack: React, TypeScript, iOS, Android, React Native, Firebase, Google Cloud Platform 📝 Company Overview: Steal Alert is a thriving startup based in Poland. The concept originated from their fan page, where users could find promotions on clothing, technology, and other goodies, curated either by users or their administrators. To expand their reach and overcome platform limitations, they decided to create a native mobile app for both iOS and Android. ✔️ Scope of Project: ▪ Prepared comprehensive technical documentation for the application, ensuring clarity and scalability. ▪ Provided expert technical consulting for the mobile app industry, guiding the client through crucial decisions. ▪ Developed a cross-platform mobile app using React Native, ensuring seamless performance on both iOS and Android devices. ▪ Implemented robust analytics and push notifications using Google Firebase & OneSignal, enhancing user engagement and retention. ▪ Created a serverless backend infrastructure on Google Firebase, ensuring scalability and cost-effectiveness. ▪ Assisted the owner in launching the app on Android's Play Store and Apple's App Store, ensuring a smooth deployment process. 🚀 Outcome: After the app was launched, it quickly became the #1 free app in the Polish App Store (iOS) and Polish Play Store (Android). On the launch day, we saw over 15,000 unique users, and now, the app boasts over 300,000 unique users per month. Steal Alert achieved an impressive uptime of over 99.9%. At NS Code, we're proud to have partnered with Steal Alert to bring this innovative app to life. The entire project ended with 5/5 rating on Clutch (https://lnkd.in/dvpdZxWE). Learn more about the project on the link below 👇 #MobileAppDevelopment #React #TypeScript #iOS #Android #ReactNative #Firebase #GoogleCloudPlatform #AppLaunch #Startups #ProjectShowcase

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Who is attending DOU DevOps Meetup in Kyiv on September, 19? Look for the SKELAR stand and let's get in touch. And don't miss the opportunity to meet Serhii Mikheiev, CTO TENTENS Tech by SKELAR. He will take part in a panel discussion where, together with other speakers, he will talk about: - the concept of Platform Engineering  - AI for DevOps and DevOps for AI. See you this Thursday!

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