NAC Engineer

Network Security Engineer

Overview

We are seeking a senior Network Security Engineer with strong Cisco ISE and Network Access Control (NAC) expertise to support a

global transformation programme, including the migration and evolution of existing access control capabilities towards Cisco ISE-based solutions.

Key Responsibilities

• Design, implement and support Cisco ISE solutions across a large enterprise environment.
• Support the migration of existing NAC capabilities into strategic Cisco ISE platforms.
• Review current security controls and define target-state architecture.
• Provide SME guidance on network access control, authentication and identity-based security.
• Work with Cyber Security, Infrastructure, Risk and Business stakeholders.
• Support global security standards, governance and compliance requirements.

Essential Skills

• 7+ years' experience in Enterprise Networking / Network Security.
• Strong hands-on experience with Cisco ISE .
• experience with:
  • NAC (Network Access Control)
  • 802.1X
  • RADIUS / TACACS+
  • EAP-TLS
  • Network segmentation
  • Authentication and identity-based access controls
• Cisco CCNP / CCIE preferred.
• Python automation and scripting.
• Linux / Unix administration.
• Enterprise routing and switching expertise.

Desirable

• Exposure to Forescout , Aruba ClearPass or other NAC platforms.
• IAM / Identity & Access Management.
• CISSP.
• VMware / OpenShift.
• AI / MLOps / LLMOps.

Ideal Candidate

A senior Network Security SME with hands-on experience delivering Cisco ISE-based NAC solutions , ideally including migrations from legacy NAC technologies such as Forescout or ClearPass , within a large regulated enterprise environment.

Location

Sheffield, UK

Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. . Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as \"Allegis Group\"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at

To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to

We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the \"Contacting Us\" section of our Online Privacy Notice at for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield.

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