Nishant Kushwaha

Rebuild the Refund System for Lenskart from Scratch as an Event Driven System using Kafka. Architected the code base for a headless refund system, designed the event rule engine, and developed API authentication. Implemented payment gateways like Cashfree, created APIs for refund integration, and set up local environments, ensuring alignment with organizational objectives. Code Quality Enhancement & Process Improvement: Implemented Standard Operating Procedures (SOPs) for unit test cases and integrated SonarQube for code analysis, leading to improved quality assurance and code coverage. Provided comprehensive documentation and support to ensure effective implementation, enabling the team to consistently deliver higher quality code. Implemented abstract routing data source for Microservices, a solution that streamlined the process of integrating new databases and data sources across our systems. This enhancement significantly reduced the time required for data source integration tasks by 98%. Technology Migration: Led the migration of QMS & VSM APIs from PHP to Java, achieving a transition rate of 50%-100%. Created detailed API documentation to facilitate smoother system integration and improved performance. Support in the Hiring Process: Actively participated in the hiring process, conducting interviews and assessing candidate suitability to strengthen the team. Contributed to the selection of top talent, enhancing team capabilities and fostering a culture of excellence.

Solr: Designed and implemented nearby search sorted by tier of cities to find and include nearby doctors of the current city. Created a separate Solr core for cities and incorporated it with doctors' search. Shield360 Project: This project was created to offer Lab Tests & Consults as a bundle. worked on low level design for booking, membership with coupons, and generating PDF. Redis: Designed and built a real-time leaderboard system for displaying top performers in the leaderboard with rank and score. Used Redis to implement it for achieving minimum latency. Built this for doctors' social media platform (GoodMD) to increase the doctor's engagement on the platform while they play quizzes. Ejabberd XMPP Server: Debugged in-depth and identified the issue of network partitioning in the existing distributed ejabberd cluster. The existing ejabberd setup was very old and I took responsibility for setup a completely new ejabberd cluster and identified the causes of network partitioning and fixed it properly. RabbitMQ: Debugged and solved the issue of multiple connections on distributed RabbitMQ cluster where the ideal connection between server and node should be one only.

Backend Development: Clinic Payments: Implemented a QR Code Scan Payment System for accepting payments in the clinic with an automatic refund procedure using Redis, MongoDB, MySQL, and Spring Framework. Client Mini Apps (Similar to Paytm's Mini Apps): Developed the complete feature for enabling third-party websites inside Lybrate App for creating orders and making payments with Lybrate as a payment gateway. Helped Lybrate's partners to implement this and wrote complete API documentation. GoodChemist: Designed the Communication microservice as an event-driven system for sending SMS, Notifications, Emails & Whatsapp Messages to the chemists including bulk communication. Have worked on Elasticsearch for adding new product filters on the search page in GoodKart an e-commerce platform. Implemented new call journeys on the autodialer system (Customer Calling) written as a separate microservice for managing inbound and outbound calls. Android Development (Lead): Build a new product for Chemists (GoodChemist App) from scratch, designed clean code architecture with reduced boilerplate code. Refactored the code architecture for new libraries (Android Jetpack) and migrated all of Lybrates App to AndroidX. Created lots of features from scratch, one of which is Post Reaction with Emojis (similar to Facebook & LinkedIn reactions) for Doctors' social media platform known as Lybrate GoodMD. Took responsibility for creating a better UI/UX experience for users and re-designed the complete Lybrate App UI.

Developed Instant Apps for two games (one of which is Ludo Superstar comes on the list of top charts on the Google Play Store). Also redesigned the game screens using Constraints Layout. Learned how to manage different screen sizes for an Android App. Also learned debugging skills in Android Studio.