Vivek Kumar Singh

Key Projects:

- NCMC HSM Security (API Architect and Developer)

- Developed APIs for encrypting and decrypting sensitive data, ensuring robust security for NCMC Acquirer Middleware and InstaProxy.

- Tech Stack: Java, Spring Boot, Redis, MySQL

- InstaProxy (Developer)

- Optimized the Insta Proxy module to facilitate seamless communication between Payment Gateway and multiple banking institutions.

- Streamlined the handling of financial transactions, including payments, refunds, and verification calls.

- Implemented comprehensive monitoring and alerts.

- Tech Stack: Java, Spring Boot

- NCMC Acquirer Middleware (Developer)

- Worked on APIs for seamless money addition, balance updates, and service creation using POS machines.

- Oversaw transaction settlements at metro gates, orchestrating communication with issuer banks.

- Configured in-depth monitoring and alerts.

- Tech Stack: Java, Spring Boot, Apache Kafka, MySQL, Redis

- NCMC Acquirer Bus(API Architect and Developer)

- Designed APIs to streamline bus conductor operations using Paytm EDC Devices.

- Orchestrated real-time data synchronization between backend servers and EDC devices, ensuring swift transactions.

- Implemented robust monitoring and alerts.

- Tech Stack: Java, Spring Boot, MySQL

- NCMC Issuer(Lead Developer)

- Pioneered the development of the NCMC Issuer, empowering users to purchase and activate NCMC cards, complete with auto top-up functionality.

- Introduced card recharge capabilities and established comprehensive monitoring and alerts.

- Tech Stack: Java, Spring Boot, Apache Kafka, MySQL, Redis

- City Bus (Developer)

- Spearheaded the creation of the City Bus project from inception, managing the entire lifecycle from development to seamless deployment.

- Revolutionized user experience by enabling bus stop search, route and fare information, and effortless ticket booking via the Paytm app.

- Implemented robust monitoring and alerts using StatsD, Telegraf, Prometheus, and Grafana.

- Tech Stack: Java, Spring Boot, MySQL, Redis, Elasticsearch, AWS S3

Notable Contributions:

- Enhanced system performance by configuring monitoring and alerts for Paytm Hotels APIs using StatsD, Prometheus, and Grafana.

- Collaborated on an internal dashboard that displayed transaction details and search-to-booking ratios, earning recognition as the Best Intern.