Sairam Krishnasamy

• Lead architecture and engineering strategy for enterprise-scale payment platforms deployed across cloud (Azure) and on-prem environments, supporting high-volume corporate banking transactions.
• Drive microservices-based and event-driven architecture adoption, leveraging Java 17, Spring Boot, and Kafka to improve scalability, resilience, and performance.
• Define and enforce secure-by-design principles, ensuring compliance with enterprise security, audit, and regulatory standards across applications and infrastructure.
• Own technology modernization initiatives, including cloud migration, API gateway transformation, and Web Application Firewall upgrades.
• Partner with product, risk, legal, and operations teams to align platform capabilities with business strategy and regulatory requirements.
• Lead and mentor engineering managers and senior engineers, fostering a culture of technical excellence, ownership, and continuous improvement.
• Drive DevOps transformation, implementing CI/CD pipelines (GitHub, Harness), improving deployment frequency, reliability, and operational visibility.
• Make and defend architectural trade-offs balancing cost, performance, scalability, and compliance constraints.
• Influence enterprise-wide engineering practices, acting as a technical thought leader across teams.

• Led enterprise-wide ISO 20022 (SWIFT MX) transformation, modernizing high-volume payment processing systems across global markets.
• Defined target architecture for migration from MT to MX, ensuring scalability, regulatory compliance, and interoperability across partner systems.
• Designed and implemented distributed, multi-system integration architecture supporting RTGS systems across multiple countries.
• Collaborated with product, operations, and risk stakeholders to translate regulatory and business requirements into scalable technical solutions.
• Directed end-to-end migration strategy, including architecture design, testing frameworks, and rollout across multiple payment ecosystems.
• Acted as principal technical authority, driving design decisions, resolving complex system dependencies, and managing risk across critical programs.
• Mentored solution architects and engineers, elevating architecture standards and engineering maturity across teams.

• Led modernization of U.S. payment systems, migrating New York Community Bank and Sterling National Bank from legacy platforms to Fiserv’s Enterprise Payments Platform.
• Drove requirements analysis and client engagement, aligning bank-specific payment processing needs with hosted platform capabilities and identifying gaps for custom solutions.
• Managed and mentored a team of 5–6 solution engineers, providing technical guidance across development, defect resolution, and testing cycles.
• Delivered end-to-end integrations with key systems including FEDWIRE, Axletree, Signature (core banking), and FCRM (sanctions screening), leveraging Java, Spring Boot, and Kafka-based microservices.
• Owned post-release support and quality processes, including defect triage leadership, environment support, and evaluation of payment scanning solutions for production readiness.

• Led modernization of BMO’s payment systems, migrating from legacy platforms to Fiserv’s Enterprise Payments Platform across U.S. and Canadian processing.
• Directed client engagement and requirements analysis, leading workshops and defining Phase 3 enhancements aligned with business and product capabilities.
• Managed a team of 5–6 solution engineers, providing architectural guidance, overseeing high-level design for custom gaps, and supporting defect resolution.
• Delivered complex integrations and clearing capabilities, including FEDWIRE, LVTS, SWIFT GPI, CPS (Charging), and key modules such as Smart Hub, EPBS, STP, and Liquidity.
• Owned end-to-end delivery and release management, including cost estimation, testing support, defect triage, resiliency improvements, go-live readiness, and post-implementation support.

• Designed and developed the Goombal Mobile Services Framework using RESTEasy, JSON, and Spring to provide scalable RESTful APIs for mobile applications.
• Implemented token-based authentication and authorization to secure REST services and prevent unauthorized access.
• Established API documentation standards to enable consistent integration and streamline mobile application development.

Designed and implemented the Goombal Connector Framework to integrate with third-party services via REST and SOAP while keeping core services decoupled from provider-specific implementations.
Built a flexible authentication and service interaction architecture, including pluggable authenticators and a connector registry to support provider-specific integrations.
Developed connectors for Eloqua, Marketo, Salesforce (campaign management) and Expensify, Concur (expense management).

• Led the design and development of next-generation enterprise web applications, delivering scalable solutions that improved business operations and efficiency.
• Led development teams on major system initiatives, coordinating with QA and operations to ensure timely software releases and effective change management.
• Designed, developed, tested, and supported complex Java-based business applications, ensuring high availability and timely resolution of production issues.
• Built web application modules using Java, JSP, Servlets, HTML, JavaScript, and frameworks like Spring, Struts, and Hibernate, supporting overall project goals.
• Partnered with business stakeholders to gather requirements and define project scope, translating needs into detailed technical specifications that guided development.
• Deployed enterprise applications on BEA WebLogic Server with Apache as the web server and used Eclipse for development, unit testing, and deployment.
• Thrived in a fast-paced Agile environment, collaborating across engineering, QA, operations, and business teams to deliver high-quality software.