Certainly, Shubhanshu! Here's a refined and rephrased version of your introduction, incorporating "Lead App Developer" and including Swift in your tech stack:
👋 Greetings! I'm Shubhanshu Barnwal, currently working as a Lead App Developer at Wiingy, where I spearhead mobile development initiatives using cutting-edge technologies.
My core expertise lies in React Native 
With a full-stack approach, I build intuitive digital experiences across web and mobile using foundational technologies like HTML, CSS, JavaScript, and frameworks such as ReactJS and Tailwind CSS. My development workflow is streamlined by tools such as Git, GitHub, Bash, SQL, and Socket.io, and I'm well-versed in agile project management and the Software Development Life Cycle (SDLC).
🚀 One of my proudest accomplishments is publishing multiple apps on the App Store and Google Play Store, a testament to my ability to deliver polished, user-centric products that make a meaningful impact.
I am deeply passionate about cloud computing, particularly leveraging AWS and Firebase, to build scalable backend infrastructure and enable real-time capabilities.
What sets me apart is not just technical depth, but a collaborative mindset and a drive for innovation. I thrive in fast-paced environments and believe in building solutions that are both creative and impactful.
In summary, I’m a results-driven Lead App Developer with a proven track record in shipping high-quality apps, leading mobile teams, and driving innovation across platforms. I'm always open to connecting with like-minded professionals to collaborate on exciting, forward-thinking projects.
Let’s connect and innovate together! 🌟
📫 Contact Me:
