Lead Network Security Consultant

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Head of Talent at DevNull Security | Championing Innovation in Cybersecurity, Recruitment & Retention

Why Dev/Null Security?

Dev/Null Security are a small group of cybersecurity SME’s with decades of experience defending high-value assets and systems against the world’s most advanced threats. We are dedicated to protecting organisations against evolving cyber threats, intent on delivering quality and value to our clients across architecture, engineering, consultancy, and PMO. We offer a dynamic work environment, opportunities for growth, and a commitment to excellence.

We're seeking a Lead Network Security Consultant with deep technical expertise in network security and a broad understanding of cybersecurity domains. The ideal candidate will lead secure solution design within large-scale IT programmes, provide strategic consultancy, and ensure alignment with business and regulatory requirements—all while working collaboratively in a hybrid environment.

Requirements

Cybersecurity Expertise:

Significant experience and proven technical depth within network security, and to include exposure to;

• Segmentation and Micro-Segmentation: Dividing the network into smaller, isolated segments to limit attack surfaces.
• Network Access Control (NAC): Enforcing security policies for devices attempting to access the network.
• Secure Protocols: Implementing secure communication protocols like TLS/SSL, IPsec, and SSH.
• Network Traffic Analysis: Monitoring and analysing network traffic to detect and respond to anomalies.
• Network Security Policies: Defining and enforcing policies for secure network operations and access.
• Experience and working history in one of the following domains of cybersecurity; security operations & incident response, threat & vulnerability management, identity & access management, cryptography, infrastructure, application, data, cloud.
• Broad background across information technology with the ability to communicate clearly with non-security technical SME's at a comfortable level.
• Experience and understanding of both the roles and interlock between enterprise & solution architecture.
• Experience in both operational and transformation cybersecurity roles or a clear working understanding of both perspectives.
• Experience working in large-scale IT transformation programmes.
• Ability to manage a project team of technical architects, engineers, and/or analysts.

Qualifications & Certifications:

• Bachelor's, masters or doctorate degree in cybersecurity, computer science, software engineering, or related field.
• CISSP/CISM certification or other broad cybersecurity industry-recognised certificate.
• SABSA or TOGAF certified preferred.

Accountabilities and Responsibilities

• Produce clear cybersecurity requirements based on regulatory and business findings.
• Produce, manage, and update end-to-end solution designs in line with reference architecture & business requirements.
• Articulate and publish key design decision records and options to ensure all solutions follow a logical, transparent decision-making process.
• Ensure any technical risks or issues arising from a solution design are recorded and mitigated.
• Produces, manages and translates the requirements into the architecture for that solution, ensuring technology and services meet the customer needs and expected business outcomes.
• Ensures the design of the solutions are efficient, timely and cost effective throughout the project lifecycle.

Your Base

Whilst DevNull Security are a remote-first company, our consulting team may be required to travel to a physical site 2-3 times per week, either (Edinburgh, Birmingham, Sheffield, Manchester, London or Glasgow) subject to project/customer requirements.

We believe that a career in cybersecurity should be accessible to everyone. We actively welcome applicants from all walks of life—regardless of race, ethnicity, gender identity, age, sexual orientation, disability, neurodiversity, socioeconomic background, or any other aspect of identity. As a growing company, we’re committed to fostering an inclusive, equitable, and accessible hiring experience. We value continuous learning and are always open to feedback to help us improve.

Seniority level

• Seniority levelMid-Senior level

Employment type

• Employment typeFull-time

Job function

• Job functionInformation Technology
• IndustriesComputer and Network Security, Financial Services, and Banking

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