Tung Nguyen https://petaminds.com/author/tung/ A.I, Data and Software Engineering Thu, 09 Apr 2026 19:38:39 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://petaminds.com/wp-content/uploads/2019/09/ic_launcher.png Tung Nguyen https://petaminds.com/author/tung/ 32 32 Harness Engineering: The New Paradigm of Agent-First Software Development https://petaminds.com/harness-engineering-the-new-paradigm-of-agent-first-software-development/ https://petaminds.com/harness-engineering-the-new-paradigm-of-agent-first-software-development/#respond Thu, 09 Apr 2026 19:37:55 +0000 https://petaminds.com/?p=5206 In late 2025, an engineering team at OpenAI ran a massive internal experiment that demonstrated the true power of Harness Engineering. They successfully built and shipped a beta software product containing roughly a million lines of code, and humans manually wrote exactly zero of them. Instead, humans orchestrated a suite of Codex agents to write […]

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]]> https://petaminds.com/harness-engineering-the-new-paradigm-of-agent-first-software-development/feed/ 0 How EMV (Chip & PIN) Works – Transaction Flow Chart https://petaminds.com/how-emv-chip-pin-works-transaction-flow-chart/ https://petaminds.com/how-emv-chip-pin-works-transaction-flow-chart/#respond Thu, 20 Jun 2024 03:38:28 +0000 https://petaminds.com/?p=5194 The shift from magnetic stripe to EMV (Europay, Mastercard, and Visa) technology has revolutionized the way card transactions are processed, enhancing security and reducing fraud. This article provides a comprehensive overview of the EMV transaction process, detailing each step involved from card detection to transaction completion. Process Description The transaction process begins with the card […]

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]]> https://petaminds.com/how-emv-chip-pin-works-transaction-flow-chart/feed/ 0 How I build automated testing for the payment terminals https://petaminds.com/how-i-build-automated-testing-for-the-payment-terminals/ https://petaminds.com/how-i-build-automated-testing-for-the-payment-terminals/#respond Thu, 16 May 2024 00:27:17 +0000 https://petaminds.com/?p=5173 Payment terminals are devices used to process card transactions and must undergo extensive certification before being released to the market. Therefore, it is essential to test them quickly and reliably. I named the project as Mastoo (code name: MR2). The MR2 architecture To achieve this, our team are building a solution for automation testing with […]

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]]> https://petaminds.com/how-i-build-automated-testing-for-the-payment-terminals/feed/ 0 The Card Payment Industry Landscape: Latest Technologies and Trends https://petaminds.com/the-card-payment-industry-landscape-latest-technologies-and-trends/ https://petaminds.com/the-card-payment-industry-landscape-latest-technologies-and-trends/#respond Sat, 20 Apr 2024 08:12:00 +0000 https://petaminds.com/?p=5188 The card payment industry is undergoing a significant transformation driven by technological advancements, evolving consumer preferences, and regulatory changes. As the world increasingly moves towards cashless transactions, understanding the latest technologies and trends in this sector is crucial for businesses, consumers, and policymakers. 1. Contactless Payments and NFC Technology Contactless payments, enabled by Near Field […]

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]]> https://petaminds.com/the-card-payment-industry-landscape-latest-technologies-and-trends/feed/ 0 MVVM vs MVI – Architecture for Mobile Development https://petaminds.com/mvvm-vs-mvi-architecture-for-mobile-development/ https://petaminds.com/mvvm-vs-mvi-architecture-for-mobile-development/#respond Fri, 05 Apr 2024 22:22:00 +0000 https://petaminds.com/?p=5191 The Model-View-ViewModel (MVVM) and Model-View-Intent (MVI) are architectural patterns used in software development, particularly for structuring the code of user interface (UI) applications. Both patterns aim to separate concerns and manage the flow of data between the UI and the underlying data models, but they do so in different ways. Let’s explore both patterns with […]

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]]> https://petaminds.com/mvvm-vs-mvi-architecture-for-mobile-development/feed/ 0 LTV – Terms & Conditions https://petaminds.com/ltv-terms-conditions/ https://petaminds.com/ltv-terms-conditions/#respond Sun, 24 Mar 2024 00:59:00 +0000 https://petaminds.com/?p=5199 Terms & Conditions These terms and conditions apply to the Lich Tu Vi app (hereby referred to as “Application”) for mobile devices that was created by Tung Doan Nguyen (hereby referred to as “Service Provider”) as an Ad Supported service. Upon downloading or utilizing the Application, you are automatically agreeing to the following terms. It […]

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]]> https://petaminds.com/ltv-terms-conditions/feed/ 0 the Mobile Testing Maze: AMaestro & Appium Frameworks https://petaminds.com/the-mobile-testing-maze-amaestro-appium-frameworks/ https://petaminds.com/the-mobile-testing-maze-amaestro-appium-frameworks/#respond Mon, 12 Feb 2024 21:27:57 +0000 https://petaminds.com/?p=4822 In the age of ubiquitous mobile apps, ensuring their quality and functionality across diverse devices and platforms is crucial. Manual testing, while essential, can be time-consuming and prone to human error.expand_more Enter mobile automation testing frameworks, your allies in streamlining the process and delivering exceptional user experiences. However, choosing the right framework amidst a plethora […]

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]]> https://petaminds.com/the-mobile-testing-maze-amaestro-appium-frameworks/feed/ 0 Harnessing the Power of TypeScript for Building a Simple Backend Application https://petaminds.com/harnessing-the-power-of-typescript-for-building-a-simple-backend-application/ https://petaminds.com/harnessing-the-power-of-typescript-for-building-a-simple-backend-application/#respond Mon, 21 Aug 2023 08:06:58 +0000 https://petaminds.com/?p=3979 Introduction In the realm of web development, choosing the right technology stack for your backend application can significantly impact its efficiency, maintainability, and scalability. TypeScript, a superset of JavaScript, has emerged as a robust choice for crafting backend solutions that are not only powerful but also developer-friendly. In this article, we’ll delve into the benefits […]

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]]> https://petaminds.com/harnessing-the-power-of-typescript-for-building-a-simple-backend-application/feed/ 0 Exploring Kotlin’s suspendCoroutine: A Guide with Examples https://petaminds.com/exploring-kotlins-suspendcoroutine-a-guide-with-examples/ https://petaminds.com/exploring-kotlins-suspendcoroutine-a-guide-with-examples/#respond Tue, 08 Aug 2023 22:51:56 +0000 https://petaminds.com/?p=3948 Introduction: Kotlin, with its modern syntax and powerful features, has taken the programming world by storm. One of its unique offerings is the suspendCoroutine function, a game-changer when it comes to handling asynchronous operations. In this article, we’ll dive into the world of suspendCoroutine, demystifying its usage and providing you with real-world examples to showcase […]

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]]> https://petaminds.com/exploring-kotlins-suspendcoroutine-a-guide-with-examples/feed/ 0 Kotlin Best Practices: Elevate Your Code https://petaminds.com/kotlin-best-practices-elevate-your-code/ https://petaminds.com/kotlin-best-practices-elevate-your-code/#respond Wed, 02 Aug 2023 14:52:00 +0000 https://petaminds.com/?p=3938 Introduction: Kotlin, the versatile and powerful programming language, has taken the development world by storm. Its concise syntax, seamless interoperability with Java, and robust features have made it a favorite among developers. In this article, we will delve into the top 10 Kotlin best practices that will not only elevate your coding skills but also […]

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