Lead Software Engineer; Networks Security

Overview

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Lead Software Engineer (Networks Security)

The Network Security Architecture team is responsible for defining, designing, and evolving the enterprise network architecture to ensure best in class performance, reliability, and security. This role partners with other Network Architecture teams to set the strategic direction for network platforms, develop architectural standards and roadmaps, and oversees the design and delivery of complex solutions supporting a global, hybrid, and highly distributed environment.

This role blends software engineering, systems design, and network security architecture to deliver resilient services leveraged across Mastercard’s global network.

As a Lead Software Engineer for Network Security Architecture, you will design and build secure, scalable, automated network security platforms and services. You will integrate multivendor systems, develop tooling and automation that enforce security architectural standards, driving platform lifecycle excellence from strategy through operations.

• Define, design, and evolve network security services, automation frameworks, and platform capabilities at scale.
• Develop service-level procedures, reusable patterns, and engineering solutions aligned to architectural standards and business needs.
• Introduce new technologies in alignment with enterprise guidelines and evaluate emerging capabilities that enhance automation, security, or reliability.
• Partner with Network Architecture teams to ensure secure by design integration across data centers, cloud environments, and hybrid infrastructure.

• Write high-quality, maintainable code to enhance network security tools and automation services.
• Build API-driven integrations across multivendor environments using Python, ensuring consistency, compliance, and operational efficiency.
• Automate and simplify processes, actively advocating for an automation first culture across the organization.
• Develop and maintain high-quality documentation for architecture, design, operations, and platform standards.

• Degree in Computer Science, Software Engineering, Infrastructure Technologies, or related field—or equivalent experience.
• Advanced proficiency in modern languages such as Go and Python, API integrations, and software-driven automation in multivendor environments.
• Advanced understanding of networking and network security fundamentals, including TCP/IP, routing, switching, subnets, SDN, and network segmentation.
• Strong grasp of modern software development methodologies:
  Git, CI/CD pipelines, testing frameworks, branching strategies, pull requests, and Dev Ops practices.
• Experience designing large-scale, platform-level services in global, distributed environments.
• Demonstrated leadership in technical direction, guiding engineering teams, and executing complex initiatives.
• Excellent analytical and problem-solving skills, with the ability to exercise sound technical judgment.
• Strong communication skills with the ability to collaborate effectively across all levels of the organization.
• Self-motivated, organized, and capable of driving work forward with minimal supervision.
• Comfortable adapting to new technologies, evolving architectural direction, and emerging automation patterns.
• You want to work on an awesome team!

• Experience with Ansible, Terraform, or Chef for infrastructure automation and orchestration.
• Familiarity with infrastructure-as-code workflows and Git Ops methodologies.
• Exposure to cloud networking and security constructs across AWS, Azure, or GCP.
• Experience with network security platforms,…