HELLO, My Name is

Hannad Rehman

Lead Engineer @ HackerRank

About Me

I work at HackeRrank as a Lead Software Engineer. I'm a lifelong learner and believe in the power of collaboration and open-source projects. As an avid coder, I enjoy exploring new technologies, tinkering with code, and building practical solutions to real-world challenges.

My primary focus areas include:

  • Web Development: Crafting interactive and user-friendly web applications using cutting-edge technologies such as React, Angular, and Node.js.
  • Machine Learning: Exploring the fascinating world of AI and ML, developing models for various tasks, and finding innovative ways to leverage data.
  • Open Source Contributions: Contributing back to the community and being a part of open-source projects that make a difference. Software Engineering: Applying best practices to build robust, scalable, and maintainable software. Featured Repositories

I am from the enchanting region of Kashmir valley.

My journey in the realm of software engineering spans over 8 years, during which I've honed my skills and expertise in crafting innovative solutions. Passion fuels my work, and my areas of expertise extend to the intricate world of Technology, where I find joy in exploring the nuances of JavaScript, ReactJS, TypeScript, and all things Web-related. Embracing the ethos of collaboration and knowledge-sharing, I am an advocate for the open-source community, contributing to and benefiting from the wealth of collective wisdom.

Beyond the screen and lines of code, I am equally passionate about life's simple pleasures. In my downtime, you'll find me immersed in the soul-stirring melodies of music, a personal escape that rejuvenates my creativity. However, my most cherished moments are spent in the company of my four-legged companions, my dogs. Their playful antics bring a delightful balance to the intensity of my professional pursuits.













Apr 2023 - Present

Lead Engineer

Leading the Interview team at Hackerrank, I orchestrate the evaluation process for the coding virtuosos of tomorrow. My role involves navigating the intricate dance of algorithmic problem-solving, guiding candidates through the symphony of well-structured logic and innovative solutions. it's too soon to reveal all the behind-the-scenes magic. Stay tuned for more

Jun 2018 - Apr 2023

Technical Lead

Led the team of 10 frontend developers, overseeing the development of an entire web infrastructure with Monorepo architecture using Docker, Javascript, Nodejs, and Reactjs. Implemented a robust CI/ CD pipeline for building and deploying Docker images on an AWS ECS cluster. Enhanced system monitoring with tools like New Relic and Sentry, ensuring end - to - end visibility and effective bug reporting. Played a key role in all phases of scrum, from requirements analysis and architecture design to development, testing, and deployment. Provided mentorship to interns and junior developers, fostering skill development in web application development. Successfully crafted a customer service dashboard, resulting in a 30 % increase in customer satisfaction and a 40 % reduction in ticket resolution time. Rebuilt the CRM from scratch in ReactJs, significantly improving application load time from 15 seconds to 4 seconds. Designed and implemented a high - performing Healthifyme server - side rendered landing website using Remix-run and MongoDB, with a config - driven approach for easy modifications by the marketing team.Applications include Connect(CRM), Payments Infra, HealthifymePro, HealthifyStudio, HealthifySense, HealthifyPlus, and Vaccinateme.com.

Nov 2015 - May 2018

Sr System Engineer

Led ed tech projects, employing JavaScript, ReactJs, Redux, HTML, and CSS on the client side. Developed a UI library in TypeScript and ReactJs, following design specs. Mentored a team in TypeScript/Javascript, ReactJS, UI/UX design, and NodeJs. Collaborated with the executive team to define business requirements and system goals. Provided technical expertise, resolved issues, and proposed solutions for system design and performance enhancement.

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Recent Blog Posts

Understanding Typescript ReturnType

TypeScript's ReturnType is a handy utility type that fetches the return type of a function or a callable type. It's extremely beneficial when working with complex codebases or trying to enforce specific return types within TypeScript. ReturnType is a predefined utility type in TypeScript that extracts the return type of a function type. This type utility is quite versatile and can be used in various scenarios.

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Enhancing Your React-Markdown Experience with Syntax Highlighting in a React Application

react-markdown is a popular library in the React ecosystem that enables developers to render Markdown content as React components. While React-Markdown provides a seamless way to incorporate Markdown into your React applications, adding syntax highlighting support can take your user experience to the next level. Syntax highlighting not only improves code readability but also enhances the overall aesthetics of your application. In this blog post, we'll explore how to integrate syntax highlighting into React-Markdown effortlessly.

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Monorepo at Healthifyme

A monorepo is a code repository that holds multiple applications. These applications can be related or completely independent. It also allows us to share code among these application without using any kind of package manager. It should be noted that a monorepo is not a monolith. A monolith is huge amount of coupled code of a single application in a single repository.

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How to integrate Instagram/Snapchat style stories into your ReactJs application

Stories style material has become the most popular way of consuming media on social media. Most prominent platforms, such as Facebook, Instagram, Snapchat, and Youtube, offer stories. As a result, it is only natural that everyone uses the same format of media consumption.

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