Harshit Singh

Senior Software Engineer offering 5.5 years of experience. Enthusiastic about developing forward-thinking solutions to tomorrow's productivity problems. Resourceful and adaptable approach to challenges.

Paytm Wallet — Spring Boot, Java, Kafka, Redis,Oracle db

• Working as a backend developer in core payment team, developing various financial microservices modules in Payments Module.
• Responsible for developing/debugging/upgrading APIs for Payments module
• Single handedly created/developed Replenishment, Reversal, Auto-Settlement, Refund microservices from scratch for millions of customers for single and batch transactions.
• Single handedly created/developed RoleMatrix module for Bo-Users and multiple users.
• Developed advanced filters to improve search functionality, enhancing the user experience and efficiency.
• Collaborated closely with stakeholders to gather requirements, provide technical expertise(identified gaps in FRS), and ensure timely delivery of projects.
• Optimized multiple APIs and reduced response time by 60 percent contributing to the creation of robust and scalable application.

Paytm Fantasyleague — Spring Boot, Hibernate, Redis, MySql

• A microservice app using spring boot for playing match, winner and rank declaration, storing user data with rank and player scores in Mysql database and redis as a caching layer for optimizing load on database.
• Single handedly created/developed Fantasyleage Module for millions of customers and storing match data and score.
• Worked on RankModule for updating rank of multiple customers during the match.
• Collaborate closely with multiple teams and stakeholders to gather requirements needed and technical expertise and ensure timely delivery of projects.

Paytm HardyGames — Spring Boot, Hibernate, Redis, MySql

• A microservice app using spring boot for playing single and multiple user games( such as ludo, wordpress and snowshmasher), winner and rank declaration, storing user game record with rank in mysql database.
• Single handedly created/developed HardyGame Module for customers and storing match data and score.
• Collaborate with multiple teams and stakeholders to gather requirements needed and Api's designing.

PayMonk UPI — Spring Boot, Hibernate, Kafka

A fintech microservice app using spring boot for online transaction, maintaining transaction history of successful transaction received and maintaining records of users, QrCode etc

PayMonk POS and Micro Atm— Spring MVC, Hibernate

A fintech service web app using spring mvc and hibernate. The transaction data and terminal is managed and stored in the Postgresql database. Redis server used for managing token.