--- title: "Md.Jahirul Islam (@jahirul) | Hashnode" description: "Passionate programmer and proficient in C#, .Net Core, Angular, JavaScript, MSSQL, and Microsoft Azure." url: "https://hashnode.com/@jahirul" --- @jahirul # Md.Jahirul Islam @jahirul · Dhaka,Bangladesh · Joined January 2024 Passionate programmer and proficient in C#, .Net Core, Angular, JavaScript, MSSQL, and Microsoft Azure. ### [Document Intelligence capabilities.](https://jahirul.hashnode.dev/document-intelligence-capabilities?utm_source=hashnode&utm_medium=feed) 🌟 Turning unstructured documents into actionable insights — powered by OCR and Azure AI. Last few days, I had the opportunity to design and implement a solution that automates data extraction from PDF files using Optical Character Recognition (OCR)... 1 min read · [jahirul.hashnode.dev](https://jahirul.hashnode.dev/document-intelligence-capabilities?utm_source=hashnode&utm_medium=feed) [Jul 8, 2025](https://hashnode.com/posts/document-intelligence-capabilities/686caa7e6346d23241f2b79b) ### [Simplify Validation in .NET Core with Fluent Validation](https://jahirul.hashnode.dev/simplify-validation-in-net-core-with-fluent-validation?utm_source=hashnode&utm_medium=feed) Fluent Validation 1 min read · [jahirul.hashnode.dev](https://jahirul.hashnode.dev/simplify-validation-in-net-core-with-fluent-validation?utm_source=hashnode&utm_medium=feed) [May 19, 2025](https://hashnode.com/posts/simplify-validation-in-net-core-with-fluent-validation/682ac97a277ad42a89d46693) ### [Securing Angular Applications with Auth Guards 🚀](https://jahirul.hashnode.dev/securing-angular-applications-with-auth-guards?utm_source=hashnode&utm_medium=feed) Auth Guards 1 min read · [jahirul.hashnode.dev](https://jahirul.hashnode.dev/securing-angular-applications-with-auth-guards?utm_source=hashnode&utm_medium=feed) [May 19, 2025](https://hashnode.com/posts/securing-angular-applications-with-auth-guards/682ac7f5af8a312fcdd98727) ### [Exploring Azure IoT Central Real-Time Data Pipelines!](https://jahirul.hashnode.dev/exploring-azure-iot-central-real-time-data-pipelines?utm_source=hashnode&utm_medium=feed) Azure IoT Central 1 min read · [jahirul.hashnode.dev](https://jahirul.hashnode.dev/exploring-azure-iot-central-real-time-data-pipelines?utm_source=hashnode&utm_medium=feed) [May 19, 2025](https://hashnode.com/posts/exploring-azure-iot-central-real-time-data-pipelines/682ac678010a2ecf70d9a7ee) ### [What are the 3 key principles of object orientated programming?](https://jahirul.hashnode.dev/what-are-the-3-key-principles-of-object-orientated-programming?utm_source=hashnode&utm_medium=feed) The 3 key principles of object orientated programming are ➢ Encapsulation: Encapsulation is important because it provides a powerful way to store, hide, and manipulate data while giving you increased control over it. Encapsulation can be used when de... 1 min read · [jahirul.hashnode.dev](https://jahirul.hashnode.dev/what-are-the-3-key-principles-of-object-orientated-programming?utm_source=hashnode&utm_medium=feed) [Apr 13, 2024](https://hashnode.com/posts/what-are-the-3-key-principles-of-object-orientated-programming/661a8da256c6cabbd845ab3b)