Principal Software Engineer - Core Payment Systems Architecture

Requirements

• Experience in software architecture, with deep expertise in distributed systems and edge computing.
• Strong proficiency in C++, Tandem HP Nonstop, Golang, gRPC, Axon, NGFT and TCP/IP networking.
• Experience with ISO8583, ISO20022, or other financial messaging standards.
• Proven track record in designing and operating Kubernetes-based platforms at scale.
• Deep understanding of Hp Non-stop and also cloud platforms (AWS, GCP, Azure) and on-premises deployments.
• Experience with DevOps, CI/CD, observability, and fleet management.
• Strong knowledge of security architecture, including authentication, authorization, and secure communication.
• Excellent communication and leadership skills, with the ability to influence across teams and geographies.
• Progressively grown career with proven design and development experiences in multiple languages, secure coding standards (e.g., OWASP, CWE, SEI CERT), and vulnerability management.
• Understands internals of operating systems (Windows, Linux, Mainframe) to deliver interoperable and performant code.
• Has skills to develop and evangelize on reference architecture and run principles to help teams adopt Engineering Principles from the start (poison pill, active/active/active, auto-scaling, self-healing, others)
• Understands use cases for advanced design patterns (e.g., service-to-worker, MVC, API gateway, intercepting filter, dependency injection, lazy loading, all from gang of four) to implement efficient code
• Understands and implements Application Programming Interface (API) standards and cataloging to drive API/service adoption and commercialization
• Has skills to promote and coach teams on take on full stack development and facilitate end-to-end service ownership
• Has skills to engage engineers across Technology organization to promote standard software patterns and reuse of common libraries and services
• Has experience in leading and coaching teams to perform software planning and estimation for large scale complex programs
• Has skills to drive trade-off discussions to set right development capacity based on value drivers (e.g., regulatory, security, new business, market parity, technical debt)
• Has experience in design and execution of automation across multiple business areas and provides guidance on best methods and tools.
• Has an expert understanding of DevOps best practices to guide developers and abstract application development from underlying hosting platforms and infrastructure
• Performance engineering experience to ensure applications are built to scale, run, and perform for varying demands
• Has skills to succinctly articulate architecture patterns of complex systems, with business and technical implications, to executive and customer stakeholders
• Has skills to implement advanced test set ups in production environment (e.g., A/B testing, canary releases, blue-green deployment, feature flags)
• Experience with the following technologies: Unix/Linux and shell scripting, C++(primary focus) and Java, HP Non-Stop Tandem – blade and X86 systems, Configuration Management tools (e.g. SVN, Git, Bitbucket)
• Has skills to define and drive advanced chaos and other operational testing practices to test points of failures, monitors, and system behaviours under adverse conditions (e.g., resource spikes, network congestion, component or infrastructure failure)

Responsibilities

• Architect scalable, secure, and high-performance edge systems for financial transaction routing.
• Design distributed systems capable of handling persistent TCP connections, ISO message parsing, transformation, validation, and routing.
• Define and evolve the platform’s architecture using C++, Java, Golang, Axon and gRPC.
• Lead development of core routing logic, timers, retries, and business logic integration.
• Ensure seamless integration with Mastercard’s backend systems via NGFT, gRPC, Axon.
• Oversee containerization and deployment strategies using HP Non-Stop blade and X86 platforms and even using Kubernetes (K8s) across cloud and customer data centres.
• Design and implement a robust fleet management system for global deployments.
• Ensure observability, operability, and lifecycle management of edge nodes.
• Collaborate with security teams to integrate platform with Mastercard’s security subsystems.
• Ensure compliance with financial regulations and data protection standards.
• Work closely with HP Non Stop Tandem infrastructure teams and even cloud infrastructure teams to define deployment pipelines, connectivity, and operational tooling.
• Drive automation, CI/CD, and configuration-as-code and infrastructure-as-code practices.
• Collaborate with product, engineering, and operations teams to align architecture with business goals.
• Mentor and guide engineering teams on best practices in distributed systems, cloud-native development, and secure coding.

Skills