Karen Koritiak Medeiros Barbosa

Use the Cone of Uncertainty by Luiz Laranjeira to get a pessimistic and an optimistic estimates from the most probable one. Estimation of software development projects - part 9. At Fora Soft estimations deviate from fact by only +-10% (yes, and minus happens too :). When 1/6 projects deviate by 70-200%, according to Forbes (link in comments). Our CEO Nikolay estimates the projects and shared his approach in an article long time ago (link in comments). So I decided to share the approach with you. Do you use the pessimistic and the optimistic estimates? Please share in comments! #softwareestimation #SoftwareDevelopmentEstimation #SoftwareDev #TechLeadership #forasoft #forasoftblog 

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My colleague and friend, Felipe Ferraz, was telling me about all the great new things coming to mobile Android development and I just had to share them here. Here is the list: The world of Kotlin and Android Studio keeps churning out innovative features to empower developers. Here's a look at some of the hottest advancements you should know about: - Kotlin 2.0 (Beta): Get ready for a performance boost! The highly anticipated Kotlin 2.0 compiler is in beta, promising faster build times and a smoother development experience. - Kotlin DSL for Gradle Builds: Want cleaner, more concise Gradle build scripts? The future is Kotlin! This new approach offers improved syntax highlighting and error checking, making build management a breeze. -Android Studio's Compose Integration: Building beautiful UIs is so easy. Android Studio's tight integration with Jetpack Compose allows for a more visual and intuitive design workflow. Say goodbye to boilerplate code! -Third Beta of Android 15: The Android 15 Developer Preview program is in full swing, with the third beta offering platform stability. This means you can start integrating the latest features and APIs into your apps with confidence. -AI-Assisted Development Tools: The future is here! Android Studio is leveraging cutting-edge AI models to provide smarter code completion, refactoring suggestions, and even bug detection. These are just a few of the exciting advancements happening in the Android development world. Keep up with these latest trends will ensure you're building high-performance, modern, and user-friendly mobile apps. It will also save you incredible amounts of time vs. doing things the old way. What are you most excited about for the future of Android development? Share your thoughts in the comments! #Kotlin #AndroidStudio #MobileDev #JetpackCompose #Android15 #AI

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You don't need SOLID! In the Brazilian development community on social network X this weekend, a quote went viral: "An interview question that will eliminate 70% of developers: 'Do you know what a pure function is?'" This quote got me thinking about another common interview question that has been around for years: "What is SOLID?" How does the question about pure functions relate to the SOLID principles? Both concepts aim to address a critical issue that isn't discussed enough in the development community: the scalability and maintainability of code. We often focus on whether our applications can scale in terms of performance and handling requests, but we also need to ask: can your code scale? Code scalability refers to how well your application can handle growth in terms of lines of code and complexity. As your application grows, it becomes more complex, and making changes can become increasingly difficult. SOLID principles offer a set of practices to ensure that our object-oriented code can scale effectively. A pure function is a function that has no side effects and always produces the same output given the same input. All the SOLID principles can be achieved with pure functions, aligning with the functional programming principles of "avoid side effects" and "create composable software." For example: - Single Responsibility Principle: Your pure function should be small, have one responsibility, and resolve one thing. - Open/Closed Principle: Your function does not need to be modified but should be composable, allowing it to work together with other functions. - Liskov Substitution Principle: In functional programming, ensuring functions are interchangeable without altering the correctness of the program aligns with this principle. If you have a function that works with a certain type of input, any other function with the same input type should be substitutable without causing errors. - Interface Segregation Principle: Instead of having large, multi-purpose functions, write small, pure functions that only require the necessary inputs. - Dependency Inversion Principle: Avoid side effects by ensuring all dependencies your code needs are provided as inputs. Dependency injection becomes easier when you write pure functions. Thinking about composability instead of the usual pitfalls of object-oriented programming helps solve the problem of code scalability more effectively. You don't need to remember all of these fancy names; just write simple pure functions. If your goal is to create better, scalable code, understanding pure functions will significantly help. However, if your goal is just to pass a technical interview, you will likely need to know each SOLID principle. If you want to discuss more about technical interviews and international careers in tech, join our exclusive Telegram group: https://lnkd.in/da9gn_St #FunctionalProgramming #SOLID #techInterview

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⭐️ Stop using SERIAL in Postgres Artigo com algumas boas justificativas do porquê você deveria evitar SERIAL e favorecer "identity columns": ```sql create table pings ( id int GENERATED ALWAYS AS IDENTITY primary key, last_ping timestamptz not null default current_timestamp ); ```

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🎉 Exciting news! I’m happy to share that I’ve successfully passed the GitHub Copilot Certification exam! 🚀 https://lnkd.in/e5-FThNe #Slalom #GitHub #GitHubCopilot #GenAI

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I completed the fourth module (UI + Presentation) 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. - UI, UX, and Presentation best practices, and how to develop, maintain, and test a clean UI and Presentation layer in iOS apps. How to use MVC, MVVM, MVP, and their variants, prototyping techniques, localizing apps, working effectively with designers, and how to create reusable UI/Presentation components. Click to see more: https://lnkd.in/eezdWd5H

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Guide to app architecture: This guide encompasses best practices and recommended architecture for building robust, high-quality apps. https://lnkd.in/dq5Xpgiw

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For the past few months, I’ve been learning about custom payment methods in PWA Studio. To put this knowledge into practice, I developed a PWA Studio extension that integrates PagBank as a payment method. I learned a lot about integrating payment gateways with Magento, GraphQL, and PWA Studio while developing this extension. The extension currently supports Credit Card and Pix payments, with plans to add Boleto and Pay with PagBank in the near future. Feel free to check it out, provide feedback, or contribute with improvements! https://lnkd.in/dj2dSkg9 #Magento #PWAStudio #GraphQL #PagBank #eCommerce #PaymentIntegration #OpenSource #LearningJourney

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I completed the first and second modules (System Design + Networking) 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. Click to see more: https://lnkd.in/gUrBDGuJ

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There has been a trend for US companies to hire remote workers from Brazil. Why? 1). 𝐓𝐨𝐩-𝐧𝐨𝐭𝐜𝐡 𝐭𝐚𝐥𝐞𝐧𝐭 𝐩𝐨𝐨𝐥. Tony Teshara is looking for a killer dev -- we've got them down here. I am speaking with experience on the matter -- right now I work in a very skilled team of developers. 2). 𝐓𝐢𝐦𝐞 𝐳𝐨𝐧𝐞 𝐚𝐥𝐢𝐠𝐧𝐦𝐞𝐧𝐭. The sun rises and the sun sets at about the same time. 3). 𝐖𝐞'𝐫𝐞 𝐜𝐡𝐞𝐚𝐩. For Brazil, Tony is offering a phenomenal salary, but the skill same for a local hire in Texas would cost $13,500 - $17,500 (chatgpt). Besides the better salary, U.S. hires tend to cost more due to comprehensive health, retirement, and tax obligations. 4). 𝐄𝐧𝐠𝐥𝐢𝐬𝐡 𝐩𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲 in the Brazil dev community is trending up. Brazilian assassin-devs invest in their English skills because of great opportunities like this one. --------- Want to demonstrate your skill set to apply to a job like this? At English Career Network, we offer job seekers a platform to showcase their English and professional skills in a free, shareable portfolio. Key portfolio components include: 📃 document resumes in English or local language or both 📃 four additional attachments of your choice (certifications, letters of recommendation, academic transcripts, etc.) 📽️ video resumes in all the languages you speak 🕸️ links to your Linkedin profile and web site or github page For an example, please see Juan Pablo De Roovers's portfolio in the comments below.

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👋 Hey API developers, this one's for you! 👇 Senior Software Engineer Filipe Freire is breaking down the basics of Kong Inc.’s Insomnia live + Q&A this May. 📆 May 14 Here's a sneak peek of what’s on the menu: - 🎨 Bringing concepts to life - 🛠️ Crafting and prototyping APIs - 📨 Sending requests  - 🗂️ Keeping workspaces organized  - 🔄 Running tests  - 🐛 Debugging - 🤝 Collaborating Your free API Development and Testing 101 course is now open for registration! #KongPin #InsomniaREST #APIMocking #APIDevelopment #DevOps

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Bruno Rocha's talk about scaling large scale iOS apps is a must watch for every iOS developer, regardless of how big is the iOS project they are working on right now is 😅 I said it 📣 That talk is just 30 minutes of pure gold. I guarantee you it will change the way you are looking at architectural design of iOS apps 🥇 Link to the talk is in the first comment 🔽

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In our first mentorship session with Alexandre Silva, we covered the basic fundamentals of JavaScript. Some of the topics discussed included: 🔸 JavaScript History, including its creation and development over the years. 🔸 JavaScript in Test Automation, with a look at popular frameworks like Cypress and Playwright. 🔸 Node.js and npm: installation and use. 🔸 Setting up a basic environment to run JavaScript tests. 🔸 JavaScript concepts and structures. We also dove into: 🔸 Variable declarations and scope. 🔸 Functions. 🔸 Arrays and objects. This is just the beginning of our deep dive into test automation! Looking forward to learning even more in the coming sessions. Carlos Roberto Alcaires Vitória Pacheco Rodrigues Karilly Giraldo Prazeres Wilian Costa Ludmilla Lima Livia BORGES PESSANHA Eduardo Nunes Steinhorst #JavaScript #QATesting #TestAutomation #Cypress #LearningJourney #QualityAssurance #NodeJS

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🚀💼 Transform expense management with JavaScript! I developed an amazing project for expense tracking and control using JavaScript during my MBA at Rocketseat with our big teatcher Rodrigo Gonçalves. With this application, you can easily input, categorize, and visualize your expenses in an organized manner. Each entry is automatically formatted in Brazilian currency, ensuring clarity and ease of use. Additionally, the project includes features such as dynamic expense addition, automatic total updates, and item removal with a simple click. Perfect for anyone looking for a fast and efficient solution to manage reimbursements or personal expenses. https://lnkd.in/d5Q7iXqA (GitHub Repo) #JavaScript #WebDevelopment #ExpenseManagement #OpenSource

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Hi, there! I'm happy to start a new project. I use React, Redux , Express.js and MongoDB someone tecnologies for build ImgHub Collect app. This is on the first phase the project. In the next weeks, I will have new updates. #react #website #portafolio #webdevelopment

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🇺🇸 How does Spring AOP work, and how can we leverage it with a practical example of logging in your REST endpoints 🇧🇷 Como funciona o Spring AOP, e como podemos explora-lo co um exemplo prático de log nos seus endpoins Rest

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