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Job Title: Security Engineer

Location: London

Job Type: Full-time

Salary: Competitive

Equity: Benchmarked

Role Overview:

As Security Engineer, you will design, build and operate the security architecture that protects Isembard’s factories, MasonOS platform and customer data environments. You will secure both cloud infrastructure and on-site operational technology (OT), ensuring our manufacturing network meets aerospace, defence and critical-industry standards.

This role spans IT, OT and product security. You will work closely with software engineers, machinists, robotics engineers and factory GMs to embed security into every layer of the stack — from CNC-connected networks to customer-facing APIs.

Key Responsibilities:

• Harden infrastructure across factory and cloud environments
• Implement zero-trust identity and access controls
• Design monitoring, detection, and incident response capabilities
• Conduct penetration testing and vulnerability remediation
• Embed secure-by-design practices into MasonOS development and deployments
• Secure factory-connected and operational technology systems

Required Skills:

• Infrastructure and cloud security expertise
• Strong threat modelling and risk analysis ability
• Experience implementing security tooling and monitoring systems