Security Engineer (UK)

Send your CV to talent@isembard.com with the job title of the role you are applying for in the subject line.

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
• Experience operating in regulated or high-assurance environments

Desirable Experience

• Experience securing manufacturing environments
• Knowledge of Cyber Essentials, ITAR, CMMC, export controls or defence compliance requirements
• Experience working in fast-scaling startups

What We Offer:

• Responsibility for securing mission-critical industrial infrastructure
• Exposure to defence-grade operational environments
• Equity participation
• Strategic influence over cross-site infrastructure standards
• Opportunity to define secure-by-design factory networks

About Isembard:

Isembard is on a mission to forge industrial acceleration. We enable faster and cheaper products to be made for critical industries by combining advanced machine tools, robotics and our proprietary software, MasonOS. The components we manufacture are used in aerospace, defence, energy and other strategically important sectors.

Our values:

• If not now, when
• Follow the five maxims
• Humour and humility