Security Team Leader

Mitie Group plc.; Whitehaven; On-site; GBP 42,000 - 54,000; Full time

Benefits offered by this job

Structured training

Career progression

Wellbeing programme

Company pension

Uniform provided

Prestigious environment

Job summary

Mitie Group plc. is hiring a Team Leader – Security Operations (NDA) to lead and develop a team of Security Officers. The role requires hands-on leadership while remaining deployed within the rota at a Nuclear Decommissioning Authority site.

You will ensure safety and security across a high-profile Critical National Infrastructure environment, with duties including incident response, patrols, and access control. A DV clearance and a valid driving licence are essential.

Qualifications

• SIA Licence required with valid status and DV clearance eligibility.
• Full UK Driving Licence is essential.
• Experience in security environments with supervisory responsibilities is required.
• Strong communication and decision making under pressure are essential.
• Proven ability to develop and support team members and maintain compliance.

Responsibilities

• Lead, motivate, and support a team of Security Officers.
• Conduct daily briefings and operational updates.
• Allocate duties and ensure resources are deployed effectively.
• Monitor service delivery and maintain high operational standards.
• Provide day-to-day guidance, support, and supervision to team members.
• Coach and develop officers to improve performance and confidence.
• Build relationships with colleagues, management, clients and stakeholders.
• Encourage teamwork and a positive working culture.
• Support operational delivery and ensure contractual requirements are met.
• Monitor staffing levels and support resourcing requirements.
• Ensure compliance with security procedures and regulatory requirements.
• Assist with incident management, investigations, and reporting.
• Escalate significant issues to management when required.
• Maintain records and complete administrative tasks.
• Support training, mentoring, and onboarding of new employees.
• Undertake Security Officer duties as part of rota including access control and patrols.

Skills

SIA Licence

DV Clearance

Driving Licence

Security experience

Supervisory experience

Communication

Decision making under pressure

Organisational skills

IT skills (MS Office)

Team development

Tools

Microsoft Office

Job description

Team Leader – Security Operations (NDA)

Location: NDA Site
Shift Pattern: 4 Days On, 4 Days Off (Days Only)
Contract: Full Time, Permanent

About the Role

We are seeking a professional, motivated, and proactive Team Leader to join our Security Operations team supporting the Nuclear Decommissioning Authority (NDA).

This is a hands‑on leadership role where you will be responsible for leading a team of Security Officers while remaining operationally deployed within the rota. The successful candidate will provide day‑to‑day supervision, support operational delivery, maintain compliance standards, and lead by example whilst undertaking security duties.

Working a 4-on, 4-off day shift pattern, you will play a key role in ensuring the safety, security, and integrity of a high‑profile Critical National Infrastructure environment.

A full UK driving licence is essential, as the role may require travel between operational areas, conducting site patrols, supporting incident response activities, and providing operational resilience across the contract.

Key Responsibilities

• Lead, motivate, and support a team of Security Officers.
• Conduct daily briefings and operational updates.
• Allocate duties and ensure resources are deployed effectively.
• Monitor service delivery and maintain high operational standards.
• Provide day-to-day guidance, support, and supervision to team members.
• Coach and develop officers to improve performance, capability, and confidence.
• Build strong working relationships with colleagues, management, clients, and stakeholders.
• Encourage teamwork, collaboration, and a positive working culture.
• Support operational delivery and ensure contractual requirements are met.
• Monitor staffing levels and support resourcing requirements.
• Ensure compliance with security procedures, policies, and regulatory requirements.
• Assist with incident management, investigations, and reporting.
• Escalate significant security, operational, or personnel issues to management when required.
• Maintain accurate records and complete relevant administrative tasks.
• Support the training, mentoring, and onboarding of new employees.
• Undertake Security Officer duties as part of the operational rota, including access control, patrols, monitoring security systems, emergency response, and customer service activities.
• Lead by example at all times, demonstrating professionalism, integrity, and commitment to operational excellence.

What We're Looking For

Essential

• Valid SIA Licence.
• Must have the ability to obtain DV Clearance (Developed Vetting)
• Full UK Driving Licence.
• Previous experience within a security environment.
• Previous supervisory, team leader, or management experience.
• Strong communication and interpersonal skills.
• Ability to make decisions under pressure.
• Excellent organisational and problem‑solving skills.
• Good IT skills, including Microsoft Office applications.
• Experience developing and supporting team members.
• Ability to obtain and maintain the required security clearance and site access permissions.

Desirable

• Experience working within Critical National Infrastructure (CNI), Nuclear, Defence, or Industrial environments.
• Previous control room experience.
• First Aid qualification.
• Leadership or management qualification.
• Experience managing incidents and investigations.

Expectations

• Lead by example and set high professional standards.
• Build strong working relationships across the contract.
• Develop employee skills, knowledge, and confidence.
• Encourage collaboration and teamwork.
• Support operational delivery and continuous improvement.

What We Offer

• Structured training and development opportunities.
• Career progression within a leading security organisation.
• Employee wellbeing and assistance programmes.
• Company pension scheme.
• Uniform provided.
• Opportunity to work within a prestigious and highly secure operational environment.

Why Join Us?

This is an excellent opportunity for an experienced security professional looking to take the next step in their career. The successful candidate will have the opportunity to lead a team, influence operational performance, and contribute to the protection of a nationally important site while remaining actively involved in day‑to‑day security operations.