Network Security Architect

Orchard Square

2 days ago

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We are seeking an experienced Security Solution Designer to work with a financial services client, combining application architecture and network security design in a highly regulated environment.

This role blends application-first architecture with deep understanding of how networks must be designed to securely support and protect applications.

The contract is inside IR35 and we need someone willing to be in the Sheffield office up to 3-days per week.

The Role

You will own and produce reference architecture for application and network security, with a strong focus on network segmentation, application protection, and security controls. Working closely with CTO teams, security architecture, engineering, and regulatory stakeholders, you will ensure solutions are secure, compliant, and fit for purpose from design through to delivery.

You will be comfortable operating at senior level, presenting designs at design authorities, and providing technical thought leadership across multiple programmes.

Essential Experience

Strong application architecture background (standards, patterns, designs) – must-have
Software development background with solid understanding of network architecture and security
Experience combining application architecture and network security architecture
Financial services experience, ideally within regulated environments (e.g. retail banking, hedge funds, challenger banks)
Proven experience producing high-quality architecture documentation (standards, patterns, roadmaps)
Strong communication and stakeholder engagement skills, including interaction with regulatory bodies
Deep knowledge of security frameworks such as NIST, SANS, ITU
Experience with threat modelling, risk assessment, and audit support

Technical Focus
Application security, SDLC and lower-environment security
Network and application segmentation (including micro-segmentation)
Zone-based network design and secure migration from legacy architectures
Inter- and intra-zone controls: WAAP, NGFWs, NIPS/NIDS, DDoS, API gateways, reverse proxies, AuthN/AuthZ

Tools and Platforms
Legacy and modern networking infrastructure
Architecture modelling tools (BizzDesign, Archi, UML)
Jira and Confluence

Qualifications (preferred)
Degree in Cybersecurity, Computer Science, Software Engineering or similar
SABSA, TOGAF, or equivalent architecture certifications
Network infrastructure and application security certifications (e.g. CEH)

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