Current jobs related to Senior Security Architect - London - 55 Exec Search

  • Senior Cyber Security Architect

    6 days ago

    London, United Kingdom QinetiQ Security & Defence Contractors Full time

    Package:Competitive Salary BenefitsRole ID:SF18695Are you ready to be part of the future At QinetiQ were not just imagining tomorrow we are creating it. From cutting edge defence technology to ground breaking innovations our mission is to empower and protect lives. Join us as a Senior Cyber Security Architect at one of our QinetiQ UK sites where you will...

  • Senior Data Architect

    1 week ago

    Greater London, United Kingdom The Security Event Full time

    Senior Data Architect 6 Month contract initially Based: Max 2 days Onsite in London Rate: £550 - £650 p/d - (via Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great...

  • Senior Security Architect

    3 weeks ago

    london, United Kingdom 55 Exec Search Full time

    Senior OT / CNI Security Architect UK-based | Remote with client travel | Must be eligible for UK Gov Security Clearance 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...

  • Security Architect

    6 days ago

    Greater London, United Kingdom vionsa GmbH Full time

    Join to apply for the Security Architect role at vionsa GmbH. Remote — Must be UK based. Salary: Circa £70k DOE. Are you a hands‑on Security Architect who loves solving complex security challenges? Do you specialise in Microsoft security technologies across identity, endpoint, and cloud? Are you looking for a fully remote role where you can make a real...

  • Security Architect

    1 week ago

    London, United Kingdom Lorien Full time

    **Security Architect** **6-month Contract Remote** **Assignment Description** A team are working on transforming the way they facilitate Cloud hosting across the organisation and the wider public sector, with a long-term vision to design a continually improving and reliable shared service. The post-holder will be involved specifically in the design and...

  • Senior OT Security Architect

    4 weeks ago

    City of London, Greater London, United Kingdom 55 Exec Search Full time

    Senior OT / CNI Security Architect UK-based | Remote with client travel | Must be eligible for UK Gov Security Clearance 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...

  • Cyber Security Senior Architect

    6 days ago

    London, United Kingdom WTW Full time

    DescriptionThe Senior Cyber Security Architect is a strategic technical leader responsible for designing implementing and evolving the organizations enterprise security architecture to protect critical assets systems and data. This role partners with senior IT engineering and business leaders to define security principles standards and roadmaps that align...

  • Senior Cyber Security Architect

    2 weeks ago

    London, United Kingdom Anson Mccade Full time

    Senior Cyber Security Architect ££100,000 - £120000 GBP Performance Based Bonus 5-10% Onsite WORKING Location:Manchester; Birmingham; Bristol; Leeds; Belfast; , Northampton, East Midlands - United KingdomType:PermanentA leading digital consultancy is seeking a Senior Security Architect to help shape the secure design of critical digital platforms across...

  • Enterprise Security Architect

    1 week ago

    London, United Kingdom Sanderson Full time

    **Job Title: Enterprise Security Architect** **Location: London / Hybrid Working** **Salary: £100,000 - £120,000 + bonus + benefits** Are you an experienced Enterprise Security Architect looking for your next challenge? If so, this could be the ideal opportunity for you. My client, a leading financial services business and a household name with an...

  • Cyber Security Senior Architect

    2 days ago

    Greater London, United Kingdom WTW Full time

    Description The Senior Cyber Security Architect is a strategic technical leader responsible for designing, implementing and evolving the organization's enterprise security architecture to protect critical assets, systems and data. This role partners with senior IT engineering and business leaders to define security principles, standards and roadmaps that...

Senior Security Architect

4 weeks ago

London, United Kingdom 55 Exec Search Full time

Senior OT / CNI Security Architect UK-based | Remote with client travel | Must be eligible for UK Gov Security Clearance


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 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).