Lead Network Security Engineer

M&T Bank Corporation; Buffalo (NY); Hybrid; USD 116,000 - 194,000; Full time

Job summary

M&T Bank Corporation seeks a senior security engineer to implement and support enterprise Cisco ISE solutions, expanding secure access across wired, wireless, VPN, and cloud environments. The role involves mentoring engineers, strengthening Zero Trust controls, and driving large-scale security projects.

The engineer will collaborate with Cybersecurity, Network Engineering, and Identity teams, with four days onsite at Seneca One Buffalo and one day per week from home.

Qualifications

• Bachelor's degree with 5+ years of relevant experience, or 9+ years combined education/work experience in cybersecurity.
• Advanced understanding of security system development, infrastructure lifecycle, and architecture.

Responsibilities

• Implement Cisco ISE-based NAC solutions for enterprise-wide AAA services (802.1X, RADIUS, TACACS+).
• Configure and maintain Cisco ISE policies, device profiling, posture assessment, guest access, and BYOD onboarding.
• Develop and maintain RBAC and dynamic authorization policies; apply network segmentation strategies (Cisco TrustSec, SGTs).
• Support testing, deployments, upgrades, patches, integrations, and policy changes across wired, wireless, and VPN environments.
• Manage ISE infrastructure lifecycle, including HA, certificates, and source integrations; integrate with AD/LDAP/PKI, SIEM, and SOAR tools.
• Develop automation/orchestration to streamline user provisioning, policy management, and endpoint onboarding.
• Analyze authentication events to identify risks, optimize policies, and improve user experience.
• Troubleshoot complex NAC issues; partner with multiple teams to implement secure access aligned with Zero Trust.

Skills

Cisco ISE

NAC

AAA services

Zero Trust

Policy management

Mentoring

Education

Bachelor's degree

Tools

Active Directory

LDAP

PKI

SIEM

Security orchestration tools

Job description

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 implementing and supporting enterprise-scale Cisco Identity Services Engine (ISE) solutions and related network access control technologies. Enhances secure access controls, authentication services, device visibility, and network segmentation capabilities across wired, wireless, VPN, and cloud-connected environments. Assists the technical subject matter expert for Cisco ISE, authentication infrastructure, and Zero Trust initiatives, while mentoring less experienced engineers and supporting day-to-day operations and strategic cybersecurity projects. Responsible for designing and implementing large scale-scale security systems and solutions to develop or enhance new or existing security solutions, solving advanced complex problems or enhancements. Acts as knowledge resource for and trains less experienced engineers. Completes day-to-day support activities and special projects.

Primary Responsibilities

Implement Cisco ISE-based Network Access Control (NAC) solutions supporting enterprise-wide authentication, authorization, and accounting (AAA) services. Configure and maintain Cisco ISE policies, including 802.1X authentication, RADIUS, TACACS+, device profiling, posture assessment, guest access, and BYOD onboarding. Assist in developing and maintaining role-based access controls, dynamic authorization policies, and network segmentation strategies using technologies such as Cisco TrustSec and Security Group Tags (SGTs). Support testing and validation activities for Cisco ISE deployments, upgrades, patches, integrations, and policy changes across wired, wireless, and VPN environments. Manage deployment and lifecycle management of Cisco ISE infrastructure, including distributed nodes, high-availability configurations, certificates, and identity source integrations. Maintain the integration of Cisco ISE with Active Directory, LDAP, PKI, certificate services, endpoint management platforms, SIEM solutions, and security orchestration tools. Develop automation and orchestration capabilities to streamline user provisioning, policy management, endpoint onboarding, compliance validation, and operational support activities. Analyze authentication, authorization, and network access events to identify security risks, optimize policies, and improve overall user experience. Troubleshoot complex authentication, authorization, certificate, device posture, and network access issues across enterprise environments. Partner with Network Engineering, Cybersecurity, Infrastructure, and Identity teams to implement secure access solutions aligned with Zero Trust architecture principles. Serve as a technical liaison with Cisco and other vendors to resolve advanced support issues, evaluate product enhancements, and optimize solution performance. Assist leadership with product lifecycle management, including licensing, hardware refresh planning, software upgrades, certificate management, and technology roadmap development. Develop standards, procedures, and best practices for identity-driven network access control and secure network segmentation. Act as a technical mentor and knowledge resource for junior engineers and operations teams. 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 Company's values. Maintain internal control standards, including timely implementation of audit findings and remediation activities. Complete other related duties as assigned.

Scope of Responsibilities

This role primarily supports the following cybersecurity functions: Identity & Access Engineering Maintains enterprise authentication and authorization solutions. Assist in the Development and maintenance identity-driven access controls for users, devices, applications, and network resources. Supports Zero Trust initiatives through least-privilege access controls and policy enforcement. Security & Network Infrastructure Maintains secure network access architecture across wired, wireless, VPN, and remote access environments. Implements network segmentation, device visibility, posture validation, and access control technologies to reduce organizational risk. Maintains and optimizes Cisco ISE and related security infrastructure platforms.

Additional Responsibilities

Partners primarily with Cybersecurity, Network Engineering, Enterprise Infrastructure, Identity Management, and Technology teams. Exercises judgment in selecting methods, techniques, and criteria to achieve objectives with limited supervision. Serves as a subject matter expert for Cisco ISE, AAA services, NAC technologies, and identity-based network security. Demonstrates advanced proficiency in cybersecurity and network infrastructure technologies. Excellent communication and interpersonal skills Experience partnering with leaders to design solutions to business needs. Proficient persuasive communication skills to gain buy-in of others Strong ability to analyze and draw reliable conclusions based on large volumes of quantitative data from diverse sources Ability effectively serves in indirect leadership role.

Education and Experience Required

Bachelor's degree and a minimum of 5 years' relevant work experience, or in lieu of a degree, a combined minimum of 9 years' higher education and/or work experience

Education and Experience Preferred

Advanced understanding of the security system development and infrastructure lifecycle and architecture, and systems design Proven experience with the development and customization of tools utilized in assigned Cybersecurity function Demonstrated ability to translate architecture into technical requirements Proficient level of critical thinking and problem solving ability Excellent communication and interpersonal skills Experience partnering with leaders to design solutions to business needs. Proficient persuasive communication skills to gain buy-in of others Strong ability to analyze and draw reliable conclusions based on large volumes of quantitative data from diverse sources Ability effectively serves in indirect leadership role.

Salary

M&T Bank is committed to fair, competitive, and market-informed pay for our employees. The pay range for this position is $116,400.00 - $194,000.00 Annual (USD). The successful candidate's particular combination of knowledge, skills, and experience will inform their specific compensation.

Location

Buffalo, New York, United States of America

Company Background

Great companies have an enduring sense of purpose. At M&T, our purpose is a simple one: make a difference in people’s lives and uplift the communities we serve. M&T Bank Corporation is a financial holding company headquartered in Buffalo, New York. M&T's affiliates offer advice, guidance, expertise and solutions across the entire financial spectrum, combining M&T Bank's traditional banking services with the wealth management and institutional capabilities offered by Wilmington Trust. M&T Bank has a network of over 1,000 branches and 2,200 ATMs that span 12 states from Maine to Virginia and Washington, D.C. For more than 165 years, M&T has strived to take an active role in our communities and build long-lasting relationships with our customers. We are a bank for communities - combining the capabilities of a large bank with the care of a locally focused institution. As an employer of choice, we are proud to offer competitive benefits ranging from medical and retirement to forty hours of paid volunteer time, each year.

Equal Employment Opportunity and Other Policies

M&T Bank is unwavering when it comes to providing equal employment opportunities to all employees and applicants without regard to race, color, national origin, religion, ethnicity, sex, gender identity, age, disability, citizenship, pregnancy, veteran status, military status, marital status, sexual orientation, genetic information or any other characteristic protected under applicable federal, state or local laws. M&T Bank Corporation has policies and procedures in place to promote a drug free workplace.