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- Tasks: Design and deliver security architectures for critical OT environments and lead transformation projects.
- Company: Fast-paced consulting firm focused on securing vital UK infrastructure.
- Benefits: Flexible work environment, genuine work-life balance, and continuous growth opportunities.
- Other info: Collaborative culture with regular meetups and a focus on personal development.
- Why this job: Make a real impact in securing essential services while working with cutting-edge technology.
- Qualifications: Strong experience in cybersecurity controls and knowledge of relevant frameworks.
The predicted salary is between 48000 - 72000 £ per year.
We’re seeking a Senior OT Security Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment. The Senior OT / CNI Security Architect will help secure some of the most critical environments in the UK – from energy and utilities to transport, manufacturing and wider CNI clients. You’ll blend hands-on technical expertise and security architecture with a consulting mindset, acting as a trusted advisor to clients and shaping secure-by-design OT/ICS and hybrid IT/OT solutions.
What you’ll do:
- Design and deliver OT / CNI security architectures for ICS/SCADA, industrial networks and hybrid IT/OT environments
- Produce key artefacts: threat models, risk assessments, high/low-level designs, security roadmaps
- Work with client engineering, ops and security teams in a trusted advisor capacity
- Lead or support cyber/OT security assessments and transformation projects
- Contribute to the development of our OT / CNI consulting offerings and collateral
What we’re looking for:
- Strong experience designing and implementing cybersecurity controls across OT and/or hybrid environments
- Experience in cyber / information security consulting or auditing
- Good knowledge of frameworks such as IEC 62443, NIS/NIS2, NIST, ISO 27001, CIS, CAF, Cyber Essentials
- Comfortable engaging with both technical and non-technical stakeholders
- Adaptable, curious, and able to work across different sectors and technologies
Nice to have:
- CISSP, CISM, CISA, SABSA, TOGAF, ISO 27001 Lead Auditor/Implementer
- Cloud (Azure / AWS) and/or IAM / PAM experience
- Background in OT, CNI or industrial environments
Why join our client:
- A genuinely flexible environment – work where and how you’re most productive.
- The team comes together regularly for meetups and technical sessions that feel more like catching up with friends than formal meetings.
- A culture built on trust and respect – you’ll find leaders who listen, colleagues who share knowledge freely in an autonomous environment.
- Genuine work-life balance – they know great work comes from happy people, not long hours.
- Continuous growth – ongoing training, certifications, and support to help you develop into senior architecture and advisory roles.
- Variety and impact – projects span OT, secure infrastructure, identity, network, and endpoint security across on-premises, cloud, and hybrid environments (Azure, AWS, M365).
Senior OT Security Architect employer: 55 Exec Search
Contact Detail:
55 Exec Search Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior OT Security Architect
✨Tip Number 1
Network like a pro! Reach out to industry professionals on LinkedIn or at events. We can’t stress enough how important it is to make connections that could lead to job opportunities.
✨Tip Number 2
Show off your expertise! Create a portfolio or blog showcasing your knowledge in OT security and related frameworks. This not only highlights your skills but also demonstrates your passion for the field.
✨Tip Number 3
Prepare for interviews by practising common questions and scenarios specific to OT security. We recommend doing mock interviews with friends or mentors to build confidence and refine your responses.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, we love seeing candidates who are proactive about their job search.
We think you need these skills to ace Senior OT Security Architect
Some tips for your application 🫡
Tailor Your CV: Make sure your CV speaks directly to the role of Senior OT Security Architect. Highlight your experience with cybersecurity controls in OT and hybrid environments, and don’t forget to mention any relevant frameworks you’re familiar with!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to showcase your consulting mindset and how you can be a trusted advisor to clients. Share specific examples of past projects that align with the job description.
Showcase Your Technical Skills: Don’t hold back on your technical expertise! Be sure to detail your hands-on experience with ICS/SCADA systems and any relevant certifications like CISSP or CISM. This will help us see how you fit into our team.
Apply Through Our Website: We encourage you to apply through our website for a smoother process. It’s the best way for us to receive your application and get you started on this exciting journey with us!
How to prepare for a job interview at 55 Exec Search
✨Know Your Frameworks
Make sure you brush up on key frameworks like IEC 62443, NIST, and ISO 27001. Being able to discuss how these frameworks apply to OT and hybrid environments will show your depth of knowledge and help you stand out.
✨Showcase Your Consulting Mindset
Prepare examples that highlight your experience as a trusted advisor. Think about times when you've engaged with both technical and non-technical stakeholders, and be ready to discuss how you navigated those conversations.
✨Be Ready for Technical Questions
Expect in-depth questions about designing and implementing cybersecurity controls. Brush up on your hands-on technical expertise, especially related to ICS/SCADA systems, so you can confidently tackle any scenario they throw at you.
✨Demonstrate Adaptability
The role requires working across different sectors and technologies, so be prepared to discuss how you've adapted to new challenges in the past. Share specific examples that showcase your curiosity and flexibility in various environments.