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Posted 12 August, 2026

Network Security Operations Engineer

Vallum Associates
Manchester, ENG, GB Full Time

Job Description

Network Security Operations Engineer

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Location: Manchester, UK

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Working: Hybrid 2-3 days onsite per week

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Contract: 6 Months

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Role Overview

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We are looking for a Network Security Operations Engineer to support enterprise network security operations within a highly regulated environment. You will manage firewall operations, security incidents, policy exceptions, compliance, and governance while ensuring alignment with ITIL processes and regulatory requirements.

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Key Responsibilities

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  • Provide day-to-day operational support for enterprise network security and firewall environments.
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  • Manage firewall requests, policy changes, exceptions, and security incidents.
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  • Ensure firewall activities comply with security policies, risk assessments, and approval processes.
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  • Support firewall governance, compliance, audits, and regulatory requirements.
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  • Manage security changes through established Change Management processes.
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  • Work across ITIL Incident, Problem, Change, and Service Management processes.
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  • Identify outdated or non-compliant firewall rules and support risk remediation.
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  • Maintain accurate operational, security, and audit documentation.
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  • Collaborate with Network, Security, Infrastructure, Application, Compliance, and Service Management teams.
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Essential Skills & Experience

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  • Strong experience in enterprise network security operations and firewall management.
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  • Experience with firewall requests, policy administration, exceptions, and compliance.
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  • Strong understanding of ITIL Incident, Problem, Change, and Service Management.
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  • Experience working in regulated or highly controlled environments.
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  • Good understanding of security controls, risk assessment, governance, and audit requirements.
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  • Strong stakeholder management, communication, analytical, and problem-solving skills.
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Desirable

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  • Experience with AlgoSec or equivalent firewall policy management platforms.
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  • Knowledge of Zero Trust, ZTNA, SASE, SSE, network segmentation, and SDN.
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  • Financial services/banking or other highly regulated industry experience.
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  • Knowledge of PCI-DSS, ISO 27001, NIST CSF, and CIS Controls.
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  • Experience supporting cloud migration, hybrid networking, and network security transformation.
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  • Security certifications such as CISSP, CCNP/CCIE Security, PCNSE, CCSP, AZ-500 or AWS Security Specialty.
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