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Shashank Patel

@shashankpatel

Technical Architect at NimbusPay Innovation building Mastercard- and Visa-aligned payment systems processing up to 4,000 requests per second per instance.

India

Message

At NimbusPay Innovation Pvt. Ltd., I drive architecture and backend engineering for payment-processing solutions aligned with Mastercard and Visa ecosystems. I’ve achieved throughput of approximately 3,000–4,000 requests per second on a single instance and work on Java services, performance optimization, and distributed systems.

At Renovite Payment Solutions Pvt. Ltd., I led engineering for distributed payment and fraud-detection products, including real-time transaction monitoring with Kafka Streams and near-real-time analytics with Apache Spark for Reno Secure. I also contributed to the ISO 8583-1987-based Chase Payment Connector for transaction data capture and settlement-related processing.

Experience

Work history, roles, and key accomplishments

Current

Technical Architect

Current

NimbusPay Innovation Pvt. Ltd.

Nov 2024 - Present (2 years)

Leading technical architecture and backend engineering for payment-processing solutions aligned with Mastercard and Visa ecosystems. Achieved throughput of 3,000–4,000 requests per second on a single instance and mentors a 3-member engineering team.

Java Quarkus Spring Boot Microservices Kafka Distributed Systems JVM Tuning Garbage Collection Multithreading Caching Docker Kubernetes REST APIs Event Driven Architecture

Lead Software Engineer (AVP)

NatWest Group

May 2022 - Nov 2024 (2 years 6 months)

Designed and developed high-performance Java backend applications, engineered concurrent and multithreaded systems using Java 14, KDB, and Chronicle Queue. Drove performance improvements, code reviews, and technical documentation.

Java Multithreading Concurrency KDB Chronicle Queue System Design Performance Optimization

Team Lead

Renovite Payment Solutions Pvt. Ltd.

Sep 2016 - May 2022 (5 years 8 months)

Led engineering of distributed payment-processing and fraud-detection products using Java, Spring, Microservices, and event-driven architecture. Developed real-time fraud analytics with Kafka Streams and contributed to the Chase Payment Connector based on ISO 8583.

Java Spring Framework Microservices Kafka Kafka Streams Confluent Platform Hazelcast ZooKeeper Apache Spark Multithreading ISO 8583

Principal Java Engineer

Nimbuzz Technologies Pvt. Ltd.

Sep 2015 - Sep 2016 (1 year)

Developed Java-based backend applications for Nimbuzz Chat Messenger using Core Java, Spring, and REST services. Implemented concurrency and multithreading, optimized performance, and contributed to technical design and delivery.

Core Java Spring Framework REST Multithreading Concurrency MySQL Performance Optimization

Technical Lead

Paytm

Jun 2014 - Sep 2015 (1 year 3 months)

Led Java application development and technical implementation, designing backend solutions with Core Java, Spring, and Redis. Executed JVM tuning and performance optimization, and conducted code reviews to ensure engineering quality.

Core Java Spring Framework Redis JVM Tuning Concurrency Performance Optimization

Senior Software Engineer

McArbon Tech Innovation Pvt. Ltd.

Mar 2011 - Jun 2014 (3 years 3 months)

Developed Java-based backend applications using Core Java, Servlets, and JSP. Applied multithreading concepts and contributed to the Airtel DND/DNC platform, including requirement analysis and troubleshooting.

Core Java Multithreading Servlet JSP