Principal Cybersecurity Infrastructure Engineer

This role is four days onsite at our Seneca One Buffalo, NY location, with the flexibility to work from home one day per week Overview:     Responsible for designing, implementing, and optimizing enterprise security architectures, platforms, and frameworks that protect the organization's users, applications, data, and cloud services. Leads the development and enhancement of Security Service Edge (SSE) capabilities including Web/Cloud Proxy, Data Loss Prevention (DLP), Cloud Access Security Broker (CASB), Zero Trust Network Access (ZTNA), and Enterprise Browser. Solves highly complex cybersecurity challenges while aligning security outcomes with business objectives, regulatory requirements, and evolving threat landscapes. Acts as a knowledge resource and mentor for less experienced engineers across multiple cybersecurity disciplines. Completes day-to-day engineering support activities and strategic transformation initiatives.

Partner with senior engineers and leadership to define enterprise SSE, Zero Trust, and data protection strategies that reduce organizational risk while supporting business transformation, cloud adoption, hybrid work, and AI enablement initiatives. Lead architecture, engineering, configuration, and deployment of enterprise security platforms including Web/Cloud Proxy, CASB, DLP, ZTNA, Enterprise Browser, and other security controls supporting secure access and data protection. Define testing methodologies, validation frameworks, and security effectiveness metrics to ensure comprehensive assessment of data protection technologies across the organization. Lead deployment efforts for complex systems and technologies, coordinating with cross-functional teams and providing technical oversight to ensure successful implementation. Establish tuning standards, operational baselines, and best practices for data protection policies, cloud access governance, email protection controls, browser security, and Zero Trust enforcement mechanisms. Lead automation initiatives utilizing APIs, orchestration platforms, AI-driven capabilities, and security workflows to improve operational efficiency, accelerate response times, and reduce manual effort. Design and implement comprehensive data protection strategies to identify, classify, govern, monitor, and protect sensitive data across endpoints, cloud services, collaboration platforms, email, and SaaS applications. Architect and enhance Zero Trust Network Access solutions that replace legacy network-centric security models with identity, device, application, and risk-aware access controls. Collaborate with stakeholders across Cybersecurity, Technology, Legal, Risk, Compliance, Data Governance, and Business Units to integrate security controls seamlessly into business processes and digital transformation initiatives. Drive continuous improvement across security platforms and engineering teams by evaluating emerging technologies, threat intelligence, industry trends, and regulatory requirements to improve Cybersecurity effectiveness. Maintain strategic vendor relationships for key security technologies, providing oversight for issue resolution, product roadmaps, and operational optimization. Advise leadership on security technology investments, budget planning, platform rationalization, and future-state architecture decisions supporting enterprise security objectives. Lead adoption and governance of AI security capabilities, ensuring visibility, risk management, policy enforcement, and secure integration of AI applications and services throughout the enterprise. Understand and adhere to the Company's risk and regulatory standards, policies, and controls in accordance with the Company's Risk Appetite. Design, implement, maintain, and enhance internal controls to mitigate risk on an ongoing basis. Identify risk-related issues requiring escalation to management. Promote an environment that supports belonging and reflects the M&T Bank brand. Maintain M&T