Operational Technology (OT) Manager

Buuk Infrastructure Limited; Woolpit; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid working for eligible roles

Company pension contributions

33 days holiday including bank hols

Referral bonus £1000

Job summary

BUUK Infrastructure Limited is seeking an Operational Technology (OT) Manager to lead the OT platforms and infrastructure that underpin BUUK’s critical services. You will drive strategy, governance, and lifecycle management for OT across fibre and other networks, coordinating with IT, security, and external suppliers.

You will establish secure, resilient OT services, manage teams, and oversight asset inventories, risk records, and change control to ensure availability and regulatory compliance.

Qualifications

• Degree-level qualification in information technology, engineering, cyber security or related discipline, or equivalent substantial experience.
• Professional qualifications or training in infrastructure, networking, cloud, OT, cyber security or service management.
• Evidence of continuing professional development in OT, infrastructure resilience or cyber security.

Responsibilities

• Own the OT infrastructure and platform strategy, roadmap, service model and lifecycle across the BUUK scope.
• Lead the OT team and develop capability, documentation, and technical standards for sustainable support.
• Coordinate OT security, incident response and change management across IT, OT and external suppliers.

Skills

Leadership

Team management

Risk management

Security-minded

Communication

Education

Degree in IT/Engineering/Cyber security

Tools

Microsoft Azure

Networking

CISSP

CISM

IEC 62443

ITIL

Job description

At BUUK Infrastructure, our vision is to be the leading utility partner to accelerate the UK towards net zero for all our customers. Our group of companies has been the major drive for change and innovation over 30 years.

We provide a supportive environment that is committed to enabling our people to be the best - ensuring they feel proud to be themselves and part of BUUK Infrastructure.

We are looking forOperational Technology (OT) Managerwho would like to help us reach our mission to "earn customer loyalty and drive business growth by providing consistently excellent service".

Purpose of this role

To provide dedicated leadership and accountable ownership for the operational technology platforms and infrastructure that underpin BUUK critical operational services. The role will establish secure, resilient and supportable OT services across fibre initially and, where agreed, electric, water and other operational networks. The postholder will define service boundaries, build sustainable capability, manage suppliers and roadmaps, and coordinate OT infrastructure, cyber security, risk, architecture and service management.

Your key responsibilities are

Own the OT infrastructure and platform strategy, roadmap, service model and lifecycle across the agreed BUUK scope.

Establish clear boundaries and operating procedures between IT, OT asset owners, engineering teams, Cyber Security and third parties.

Lead the OT team and develop the capability, documentation, rota, succession and technical standards needed for sustainable support.

Maintain accurate OT asset inventories, architecture documentation, network diagrams, dependencies, support models and technical risk records.

Oversee OT identity, privileged access, network segregation, hosting, monitoring, backup, recovery, patching and vulnerability remediation.

Embed security in OT design, procurement, onboarding, change and supplier management.

Coordinate incident detection, response, recovery and post-incident improvement for OT platforms.

Manage OT suppliers and support agreements, ensuring service levels, controlled remote access and operational accountability.

Plan and govern OT change to protect availability, continuity, safety and regulatory obligations.

Develop and exercise resilience, disaster recovery and continuity arrangements.

Work collaboratively with the PMO and Projects function to provide governance, prioritisation, resource planning, risk management, benefits realisation and successful transition of change into operational service.

Provide OT technical leadership, operational-readiness assessments, risk evaluations and service-transition requirements throughout project and programme lifecycles.

Support portfolio planning and investment prioritisation with lifecycle roadmaps, dependencies, resilience requirements and technical risk assessments.

Report transparently on availability, capacity, vulnerabilities, incidents, risks, lifecycle, compliance and roadmap delivery.

Any role-specific security screening required for access to critical operational environments.

Participation in an on-call or standby rota and out-of-hours incident support, where required.

Qualifications

Degree-level qualification in information technology, engineering, telecommunications, cyber security or a related discipline, or equivalent substantial professional experience.

Relevant professional qualification or training in infrastructure, networking, cloud, OT, cyber security or service management.

Evidence of continuing professional development in OT, infrastructure resilience or cyber security.

Experience/Knowledge

Significant experience managing enterprise infrastructure, networks, cloud or operational technology in a critical or highly available environment.

Experience leading technical teams and suppliers through operational transition, service establishment or major platform change.

Strong knowledge of identity and access management, privileged access, network segmentation, hosting, monitoring, backup, recovery, patching and vulnerability management.

Experience of asset inventories, architecture documentation, lifecycle planning, risk registers and support models.

Understanding of OT cyber security, incident response, business continuity, disaster recovery and controlled change.

Experience supporting project, programme or portfolio governance within OT, infrastructure or critical-service environments.

Knowledge of regulatory and assurance expectations relevant to critical technology environments.

Experience balancing availability, resilience, security, safety, cost and delivery priorities.

Abilities/Skills

Leads technical teams with clarity, builds capability and creates a disciplined operational culture.

Makes risk-based decisions while protecting critical-service availability and continuity.

Communicates complex infrastructure and OT risks clearly to technical, operational and senior audiences.

Establishes structure in complex or incompletely documented environments.

Strong incident leadership, problem-solving, supplier-management and influencing skills.

Plans roadmaps, resources and lifecycle investment using evidence and operational priorities.

Collaborates across IT, Cyber Security, engineering, the PMO and operational teams without weakening accountability.

Maintains high standards of documentation, change control, service ownership and continuous improvement.

Experience in utilities, fibre networks, telecommunications, SCADA, industrial control systems or field-connected technology.

Relevant certifications such as Microsoft Azure, networking, CISSP, CISM, IEC 62443 or ITIL.

Familiarity with NIST Cybersecurity Framework, ISO 27001, Cyber Assessment Framework or sector-specific requirements.

Experience establishing separate identity, cloud or management environments for OT.

Experience designing or operating on-call arrangements for critical infrastructure.

Conditions of Employment

You will hold a driving licence.

You will be required to participate in a standby rota.

What can you expect from us

Cost of living annual pay review.

Company pension contributions up to 10% if employees contribute 5%.

33 days holiday including bank holidays with the ability to purchase an additional 2 weeks.

Enhanced maternity, paternity and adoption pay.

To say thank you, each time you successfully refer someone you will receive a referral payment of £1000 (net of tax).

Hybrid working for eligible roles.

Development opportunities to reach your career aspirations.

BUUK has an award-winning culture. We care about your wellbeing and safety as we all deserve the right to go home safe, every day. We are proud to be an equal opportunity employer, we respect each other and advocate for equity, diversity and inclusion in all we do.

Research shows that women and people from different underrepresented backgrounds often only apply for a job if they meet 100% of the listed qualifications.

You can also ask us about flexible working options.

From the supportive culture and opportunities to grow, to the great friends and chocolate brownies, our people tell us what they love most about working at BUUK.

We all matter.

Find out about our supportive culture.

Hear how our shared sense of mutual respect and belonging underpins out culture and supports us all.