Rajat Kumar
Lead Software Engineer at PhysicsWallah
Bengaluru
8+ years of work experience
Apr 20251 yr 5 mosPresent
On-site
Jan 20232 yrs 6 mosJun 2025
Hybrid
PhysicsWallah is an Edu-tech that focuses on providing good education to every part of India with there innovative app and highly qualified teachers.
Here I Led the development of the PhysicsWallah TV Android app from inception to launch, significantly enhancing digital presence and user engagement. Initiated and oversaw the creation of a pioneering Quick-Learning feature, similar to Instagram Reels but focused on educational content, resulting in a 10% increase in user engagement. Managed the end-to-end development of the Infinite Practice feature, which enabled continuous student practice tests, leading to an 8% boost in engagement and improved academic performance. Additionally, coordinated the deployment of a robust GitLab CI Pipeline, automating checks and tests, reducing code review time, and enhancing code quality and reliability.
Jun 20211 yr 8 mosJan 2023
Gurugram, Haryana, India
Gojek is an Indonesian on-demand multi-service platform and digital payment technology group based in Jakarta.
Here I Assumed full ownership of multiple feature developments, driving them from conception to deployment. Implemented optimizations that reduced the size of the order detail page by 30%, streamlining user experience and improving loading times, which led to decreased bounce rates and higher user retention. Executed a seamless migration from GSON to Moshi, enhancing JSON parsing efficiency and reducing memory overhead by 10%, thereby improving overall application performance and scalability. Implemented performance optimizations resulting in a 25% improvement in the page load time of the checkout page, significantly enhancing user experience, increasing conversion rates, and boosting customer satisfaction.
Feb 20201 yr 5 mosJun 2021
New Delhi, Delhi, India
Park+ is among India's fastest-growing startups, revolutionizing vehicle parking solutions and services with their unique approach.
Here I Architected and developed an efficient MVVM-based architecture, enhancing code maintainability and scalability, which streamlined development processes and accelerated feature delivery. Led the end-to-end development of the Park+ Android app from conceptualization to deployment, resulting in a feature-rich app with a seamless user experience, a 4.8-star rating on the Google Play Store, and over 100,000 downloads within the first six months. Engineered a custom overlay for Google Maps, enabling the visualization of custom markers and polylines, thereby improving user navigation and interaction within the app. Built an analytics event tracking library using Clickhouse, enhancing data collection and analysis capabilities for informed decision-making and product optimization. Designed and implemented a bridge class to seamlessly integrate a Progressive Web App (PWA) with the Android app, enabling the PWA to access native Android functionality and improving cross-platform compatibility and user experience.
Sep 20196 mosFeb 2020
Noida, Uttar Pradesh, India
Paytm is one the biggest wallet based payment/Digital payment provider in India.
Here I Attained recognition as a Paytm Rising Star for outstanding contributions and exemplary performance in Android development, demonstrating dedication, innovation, and significant impact within the team and the company. Designed and implemented a feature to collect user payments-related data and provide personalized recommendations, enhancing user engagement and satisfaction, which led to increased conversion rates and revenue generation. Created a versatile class for applying filters on product listings using a tree data structure, optimizing user experience and enhancing product discoverability. Developed a bridge class for seamless integration between JavaScript and the app on the hybrid platform "Weex," ensuring smooth communication, interoperability, and consistent functionality across different technology stacks.
Apr 20181 yr 6 mosSep 2019
Gurgaon, Haryana, India
AppStreet Software is service as well as product based company with two major products namely "Casino 42" which is a casino themed game for IOS and Android & "Pixylz" through which users can create albums, photobooks, cards, wallographs, available as Web, IOS and Android application. My Role in the company is to develop and update company's own products as well as projects of company's clients
Rajat’s AI Stack
Education
Bachelor of Technology - BTech, Computer Science and Engineering
Dronacharya College Of Engineering, Gurgaon
20144 yrs2018
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