OT Security Engineer

Sword is a leading provider of business technology solutions within the Energy, Public and Finance Sectors, dedicated to driving transformational change for our clients. We leverage proven technology, specialist teams, and extensive domain expertise to create robust technical foundations across platforms, data, and business applications. Our mission is fueled by a passion for technology as a means to solve complex business problems and achieve our clients' objectives.

About the Role:

The OT Security Engineer plays a vital role in strengthening the security posture of industrial control and automation environments.

By applying OT domain knowledge and hands‑on security control experience, the role helps safeguard critical operational systems against cyber threats, reduces risk of disruption, and ensures compliance with security frameworks.

Effective performance in this role supports safe, reliable, and resilient OT operations, enabling the organisation to maintain continuity, protect essential assets, and meet regulatory and safety obligations.

• Support the implementation, testing, and deployment of security controls across Operational Technology (OT) environments, ensuring alignment with industry standards (e.g., ISA/IEC 62443) and organisational security policies
• Conduct security assessments on OT systems, networks, and assets to identify vulnerabilities, configuration issues, and improvement opportunities
• Assist in developing and maintaining secure architectures and configurations for industrial systems, including PLCs, SCADA, HMIs, and associated networks
• Monitor and troubleshoot OT security tooling and technologies, ensuring they operate effectively and integrate seamlessly with operational processes
• Support incident response activities within OT environments, including containment, evidence gathering, and remediation support
• Contribute to the development and maintenance of OT security documentation, including diagrams, standards, procedures, and control implementations
• Work collaboratively with operations, engineering, and cyber teams to ensure security measures are practical, safe, and aligned with operational requirements
• Optional GICSP / ISA 62443
• OT background
• Experience of testing and deployment of security controls

At Sword, our core values and culture are based on caring about our people, investing in training and career development, and building inclusive teams where we are all encouraged to contribute to achieve success. We offer comprehensive benefits designed to support your professional development and enhance your overall quality of life.  In addition to a Competitive Salary, here's what you can expect as part of our benefits package: 

• Personalised Career Development: We create a development plan customised to your goals and aspirations, with a range of learning and development opportunities within a culture that encourages growth. 
• Flexible working: Flexible work arrangements to support your work-life balance.  We can’t promise to always be able to meet every request, however, are keen to discuss your individual preferences to make it work where we can. 
• A Fantastic Benefits Package: This includes generous annual leave allowance, enhanced family friendly benefits, pension scheme, access to private health, well-being, and insurance schemes.

At Sword we are dedicated to fostering a diverse and inclusive workplace and are proud to be an equal opportunities employer, ensuring that all applicants receive fair and equal consideration for employment, regardless of whether they meet every requirement. If you don’t tick all the boxes but feel you have some of the relevant skills and experience we’re looking for, please do consider applying and highlight your transferable skills and experience. We embrace diversity in all its forms, valuing individuals regardless of age, disability, gender identity or reassignment, marital or civil partner status, pregnancy or maternity status, race, colour, nationality, ethnic or national origin, religion or belief, sex, or sexual orientation. Your perspective and potential are important to us. 

If we can do anything to help make the hiring process more accessible, please let our talent acquisition team know when you apply so we can support any adjustments.