Open to opportunities

Sudarshan R

@sudarshanr

Message

Backend architect and senior Java engineer specializing in scalable, secure payment and card-processing systems.

Canada

Message

What I'm looking for

I am seeking senior backend or architect roles in payments/BFSI where I can lead modernization, design scalable microservices, mentor teams, and drive cloud-native, compliance-focused solutions.

I am a Backend Architect and senior software engineer with 14 years building high-performance, secure backend systems for banking, card processing, and e-wallet platforms. I specialize in Java, Spring Boot, microservices, and API-first design to deliver robust, compliant payment solutions.

Over the past five years I have led and mentored engineering teams, defined backend best practices, and overseen full SDLC for cloud-native systems. I have driven modernization initiatives, moving monoliths to reactive, event-driven microservices and improving observability and deployment pipelines.

My domain expertise includes card lifecycle management, tokenization, EMVCo/PCI-DSS compliance, ISO 8583 integrations, and real-time transaction processing. I have hands-on experience integrating with wallet providers and token service providers and optimizing performance for high TPS environments.

I deliver practical architecture and implementation: designing modular microservices, building reliable Kafka-based asynchronous pipelines, and implementing CI/CD and TDD practices that improve quality and speed of delivery. I am available immediately and authorized to work in Canada.

Experience

Work history, roles, and key accomplishments

Current

Senior Solution Architect

Current

Cognizant Technology Solutions

Jan 2022 - Present (3 years 8 months)

Architected scalable, reactive microservices using Spring WebFlux and Java 17, introduced event-driven integrations with Kafka, and established observability and cloud deployment standards to modernize payment platforms.

Java Webflux Kafka OpenShift PostgreSQL Redis JWT Observability CI CD

Technical Lead

Cognizant Technology Solutions

Jan 2020 - Dec 2022 (2 years 11 months)

Led microservice orchestration and asynchronous data pipelines with Apache Kafka, drove migrations to modern architectures, and implemented TDD and CI/CD practices to improve reliability and scalability.

Java Kafka Oracle PostgreSQL Unix Jenkins TDD CI CD

Senior Backend Engineer

Cognizant Technology Solutions

Jan 2017 - Dec 2020 (3 years 11 months)

Developed ISO 8583-compliant payment processing microservices for card issuance and authorization, migrated legacy components to microservices, and improved throughput and response times for payment flows.

Java Spring Boot ISO 8583 Microservices PCF Kafka Jenkins PCI DSS

Backend Developer

Cognizant Technology Solutions

Jan 2011 - Dec 2017 (6 years 11 months)

Modernized legacy card provisioning systems by migrating to Spring Boot microservices, built RESTful APIs and multithreaded Java components, and improved backend automation and security with OAuth and Swagger.