Senior Technical Security Architect - Cloud & Zero Trust

DXC Technology Company; Farnborough; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Competitive salary

Company pension

Private medical insurance

Job summary

DXC Technology is seeking a Technical Security Architect to design and deliver security architectures across cloud, on-premise, hybrid and air-gapped environments in Hampshire. The role requires leading security design decisions, producing detailed architecture docs, and guiding technology refresh initiatives.

You will apply Zero Trust and threat-informed design principles, ensuring alignment with NIST/ISO27001/CIS and client security requirements, while collaborating with enterprise,

Qualifications

• Significant experience as a Technical Security Architect, Security Architect or Senior Security Engineer.
• Strong technical expertise across IAM, network security, cloud security, endpoint security and secure platforms.
• Proven experience delivering security technology refresh, migration or modernisation programmes.
• Strong experience with AWS, Azure and/or GCP security architecture.
• Experience producing detailed technical architecture documentation.
• Strong understanding of threat modelling, risk and security architecture principles.
• Experience working within complex, regulated or formally accredited environments.
• Excellent communication skills and the ability to influence both technical and senior stakeholders.
• CISSP (or equivalent) and TOGAF and/or SABSA.

Responsibilities

• Design and deliver security architectures across cloud, on-premise, hybrid and air-gapped environments.
• Produce technical designs including HLDs, LLDs, architecture patterns and data-flow diagrams.
• Lead the refresh and evergreening of security technologies, including IAM, PAM, firewalls, EDR/XDR, SIEM, vulnerability management and cloud security.
• Evaluate new technologies through PoCs/PoVs and make clear, evidence-based recommendations.
• Design and review cloud, identity, network, perimeter and platform security solutions.
• Apply Zero Trust, defence-in-depth and threat-informed design principles.
• Ensure security architectures align with NIST, ISO 27001, CIS, NCSC and client security requirements.
• Act as a security design authority, providing technical guidance and architectural decisions.
• Work closely with enterprise, infrastructure, network and application architects to embed security across the technology landscape.
• Support security accreditation, risk assessments and client security reviews.
• Keep pace with emerging threats and technologies and identify opportunities to improve and simplify the security estate.

Skills

Security architecture

IAM

Cloud security

Threat modelling

Communication

TOGAF

CISSP

SABSA

Security design authority

Tools

AWS

Azure

GCP

Job description

DXC Technology is seeking a Technical Security Architect to design and deliver security architectures across cloud, on-premise, hybrid and air-gapped environments in Hampshire. The role requires leading security design decisions, producing detailed architecture docs, and guiding technology refresh initiatives.

You will apply Zero Trust and threat-informed design principles, ensuring alignment with NIST/ISO27001/CIS and client security requirements, while collaborating with enterprise,