Cyber Security Architect

Colt Data Centre Services; Greater London; On-site; GBP 80,000 - GBP 100,000; Full time

Job summary

A leading tech firm is looking for a hands-on Cyber Security Architect to join their team in Greater London. You will define and develop cybersecurity standards while managing essential security tools. Required skills include cloud security knowledge and experience with network security protocols, alongside relevant certifications. The role involves designing secure architectures and supporting compliance audits, making it essential for candidates to demonstrate strong problem-solving skills and hands-on familiarity with security technology.

Qualifications

• Proven experience as a Cyber Security Architect or similar role in a data centre.
• Strong hands-on experience with security tools and technologies.
• Ability to lead security architecture reviews and conduct threat-modelling workshops.

Responsibilities

• Design and maintain cybersecurity architecture aligned with industry best practices.
• Deploy, configure, and manage security tools.
• Implement network security controls, including segmentation and zero-trust principles.

Skills

Cloud security (AWS, Azure, GCP)

Network security principles and protocols

Identity and access management

Scripting (Python, PowerShell, Bash)

Automation tools (Ansible, Terraform, Puppet, Chef)

Incident response and forensic investigations

Education

Relevant certifications: CISSP, CISM, CCSP, SABSA

Tools

Firewalls

Intrusion Detection/Prevention Systems

Endpoint Detection & Response

Vulnerability Management Platforms

Data Loss Prevention

Encryption and Key Management Solutions

Job description

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We are seeking a hands‑on Cyber Security Architect to join our team. This role combines strategic security architecture responsibilities with practical implementation and operational expertise. You will define and develop cybersecurity standards, frameworks, and policies while actively working with security tools and services to protect Colt DCS’s critical infrastructure and customer environments.

Job Description

Security Architecture & Standards

Design and maintain cybersecurity architecture aligned with industry best practices and regulatory requirements.
Develop and enforce security standards, policies, and guidelines for data centre and cloud environments.
Conduct risk assessments and threat modeling for new and existing systems.

Hands‑On Implementation

Deploy, configure, and manage security tools such as:

• Firewalls (Next‑Gen, Web Application Firewalls)
• Intrusion Detection/Prevention Systems (IDS/IPS)
• Endpoint Detection & Response (EDR)
• Vulnerability Management Platforms
• Data Loss Prevention (DLP)
• Encryption and Key Management Solutions
• Identity & Access Management (IAM)
• Privileged Access Management (PAM)
• Web and Email Security Gateways
• Cloud Security Posture Management (CSPM)
• Network Access Control (NAC)

Perform security hardening of systems, networks, and cloud platforms.
Support incident response and forensic investigations when required.

Automation & Scripting

Develop and maintain automation scripts for security operations and compliance checks.

• Python, PowerShell, Bash
• Ansible, Terraform, Puppet, Chef
• CI/CD pipelines for security integration

Implement automated workflows for vulnerability scanning, patch management, and cloud security posture monitoring.

Architect secure solutions for multi‑cloud environments (AWS, Azure, GCP).
Implement network security controls, including segmentation, VPNs, and zero‑trust principles.
Collaborate with network engineers to ensure secure connectivity across data centres.

Operational Technology (OT) Security

Provide guidance and implement security measures for OT environments within data centres.
Understand IC‑SCADA security principles and apply them to physical infrastructure protection.

Work closely with IT, operations, and compliance teams to embed security into all processes.
Act as a subject‑matter expert for cybersecurity during audits and customer engagements.

Skills & Experience

Proven experience as a Cyber Security Architect or similar role in a data centre, cloud, or enterprise environment.
Strong hands‑on experience with security tools and technologies listed above.

Deep Understanding of

• Cloud security (AWS, Azure, GCP)
• Network security principles and protocols
• Identity and access management
• Familiarity with OT security and standards (IEC 62443, NIST CSF)
• Knowledge of regulatory frameworks (ISO 27001, GDPR, SOC 2)

Excellent problem‑solving and communication skills.
Relevant certifications: CISSP, CISM, CCSP, SABSA, or equivalent.
Experience in hyperscale or colocation data centre environments.
Exposure to automation and scripting for security operations.
Ability to design secure architectures across cloud, on‑prem, and hybrid environments.
Experience creating reference architectures, high‑level designs (HLD) and low‑level designs (LLD).
Ability to lead security architecture reviews and conduct threat‑modelling workshops.