Network Security Lead
Cynergy Bank
London
Protect the Future of Banking – Join Cynergy Bank as a Network Security Lead Are you a network security expert ready to take the lead in safeguarding critical infrastructure? At Cynergy Bank, we’re looking for a Network Security Lead to drive the protection of our systems and data in a fast-paced, digitally focused environment. In this pivotal role, you’ll oversee the design, implementation, and optimisation of our network security landscape—from firewalls and VPNs to DLP and endpoint protection. You’ll collaborate closely with Information Security and IT Operations to ensure resilience, compliance, and innovation across our hybrid environments. Why Cynergy Bank? Human Digital Banking: We combine the agility of a fintech with the trust of a traditional bank. Empowered Culture: Work in a collaborative, forward-thinking team that values your expertise and ideas. Career Growth: We support your development with training, certifications, and opportunities to lead impactful projects. If you’re passionate about cybersecurity, thrive in complex environments, and want to make a real impact—Cynergy Bank is the place for you. Apply now and lead the charge in securing the future of digital banking. Position Overview The Network Security Lead is responsible for securing and maintaining the bank’s network infrastructure and data, ensuring the integrity, confidentiality, and availability of network security services. This role focuses on overseeing, implementing, monitoring, and enhancing security measures to protect against evolving cyber threats. Reporting to the Technical Services Manager, the Network Security Lead collaborates with cross-functional teams to safeguard the bank’s network while ensuring compliance with regulatory and internal security standards. This role requires close collaboration with our Information Security team, acting as a conduit between IT Ops and Info Sec Key Responsibilities Network Security Management
- Oversee, configure, deploy, and maintain security measures for the bank’s network infrastructure, including firewalls, intrusion detection/prevention systems (IDS/IPS), WAF and VPNs.
- Provide oversight and management of security tools within the bank’s network such as web filtering, mail security, NAC, endpoint security, DLP, data classification and security tools, ensuring regular policy reviews are completed and recommendations actioned.
- Monitor network traffic and logs to identify and mitigate potential threats or vulnerabilities.
- Manage and optimise access controls, ensuring proper segmentation and secure connectivity across the network
- Lead the response to network security incidents, including containment, root cause analysis, and remediation.
- Collaborate closely with Information Security to address vulnerabilities identified through audits, assessments, or penetration tests within agreed timeframes.
- Provide Level 2/3 support for network security issues, ensuring timely resolution to minimise business impact.
- Work closely with the Network Lead, Firewall Lead, Technical Services Lead, Technical Services Manager and Information Security teams to align security measures with network architecture and operational goals.
- Engage with Engineering and IT Operations teams to ensure secure integration of new systems and applications.
- Partner with external vendors and service providers to maintain and enhance security tools and services.
- Ensure network security measures comply with regulatory and industry standards, including GDPR, PCI-DSS, and ISO 27001.
- Maintain up-to-date documentation of network security configurations, policies, and procedures.
- Conduct regular reviews of network security systems to ensure alignment with best practices and regulatory requirements.
- Stay updated on emerging cybersecurity threats and technologies, recommending proactive measures to address risks.
- Implement automation tools to streamline security monitoring and response efforts.
- Lead projects to upgrade legacy security tools to modern, scalable solutions.
- Bachelor’s degree in Computer Science, Information Security, or a related field or relevant experience.
- Proven experience of managing security tools within an enterprise network (e.g., mail and web filtering, DLP, WAF, CASB etc)
- Proven experience in managing and securing enterprise network infrastructures.
- Expertise in network security tools and technologies, including firewalls, IDS/IPS, and access control systems.
- Strong knowledge of network protocols (e.g., TCP/IP, BGP, OSPF) and encryption technologies.
- Familiarity with security monitoring tools (e.g., Grafana, Wireshark, SolarWinds).
- Solid understanding of regulatory compliance frameworks and security standards.
- Certifications such as CISSP, CCNP Security, CEH, or equivalent.
- Experience in the banking or financial services sector.
- Experience of Forcepoint suite of products, Varonis, Proofpoint and Palo Alto
- Knowledge of cloud-based security measures and hybrid network environments.
- Strong knowledge of network protocols (e.g., TCP/IP, BGP, OSPF) and encryption technologies.
- Familiarity with automation frameworks for security operations.
- Competitive salary and company bonus
- Competitive holiday allowance plus bank holidays
- Option to purchase an additional 10 days holiday
- Pension contribution and life assurance
- Income protection scheme and season ticket loan
- Medical cover (after probation)
- Electric car scheme and money coach (after probation)
- Hybrid working pattern: 3 days in office & 2 WFH
Posted 2025-09-14
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