Site Security Controller - London

1120 NG UK Limited.; Greater London; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Flexible working options

Private healthcare

Holiday buy and sell scheme

Annual performance bonus

Career development

Pension scheme

Employee assistance programme

Inclusive employee networks

Job summary

Northrop Grumman UK is seeking a Site Security Controller to protect people, facilities, information and reputation across New Malden and London sites. You will lead security policies, controls and compliance, working with government stakeholders and senior leaders to ensure accreditation and a strong security culture.

Role involves developing security strategy, guiding best practice, and acting as a trusted advisor within a defence organisation, with responsibilities spanning physical,

Qualifications

• Significant experience operating as a senior security representative within defence/government or highly regulated environments.
• Knowledge of UK Government security standards and JSP440.
• Experience developing, implementing and improving security policies, standards and compliance processes.
• Expertise across physical, information and personnel security controls.

Responsibilities

• Lead security governance and compliance for New Malden and London sites, ensuring accreditation of facilities.
• Build relationships with Defence Equipment & Support (DE&S) Principal Security Advisors and stakeholders.
• Develop and communicate security policies, procedures and awareness initiatives.
• Monitor effectiveness of physical, personnel and information security controls; identify improvements.
• Manage security incidents, investigations and audits with escalation and resolution.
• Act as Crypto Custodian for the Defence Operating Unit and support security teams.

Skills

Senior security experience

UK gov security standards

Security policies & compliance

Physical, information & personnel

Stakeholder management

Independent / proactive

Job description

UK CITIZENSHIP REQUIRED FOR THIS POSITION: Yes RELOCATION ASSISTANCE: No relocation assistance available TRAVEL: Yes, 10% of the Time What’s your possible?

At Northrop Grumman UK, you are part of a team driving innovation where it matters most, solving tomorrow’s challenges and shaping the technology solutions of the future. It’s what we call Defining Possible. This mindset goes beyond our customer solutions; it’s the foundation for your career development and the impact we have within the communities where we live and work. Whether you're enabling critical defence programmes, protecting national security, or supporting cutting‑edge technology, you'll be part of work that truly matters.

Opportunity Overview

This is more than just a job; it's a mission. As our Site Security Controller, you will play a pivotal role in protecting Northrop Grumman UK’s people, facilities, information and reputation across our Defence Operating Unit in New Malden and our UK Headquarters in Central London. Operating at the heart of our security function, you will lead the management and maintenance of security policies, procedures and controls that underpin our accredited government‑sponsored facilities. Working closely with customers, government stakeholders, facilities, compliance teams and senior leaders, you will help ensure our business remains secure, compliant and ready to deliver mission‑critical capabilities. This is an opportunity to influence security strategy, drive best practice, and act as a trusted security advisor within a highly respected defence organisation. Your work will directly support the growth and success of Northrop Grumman UK while enabling our teams to deliver critical solutions to customers across the defence sector.

What You’ll Be Doing

• Lead the security governance and compliance activities for our New Malden and London sites, ensuring continued certification and accreditation of operational facilities.
• Build strong relationships with Defence Equipment & Support (DE&S) Principal Security Advisors and other key stakeholders to maintain robust security standards.
• Develop, maintain and communicate security policies, procedures and awareness initiatives that promote a strong security culture across the business.
• Monitor the effectiveness of physical, personnel and information security controls, identifying opportunities for improvement and risk reduction.
• Manage security incidents, investigations and audit activities, ensuring timely reporting, escalation and resolution of security risks and non‑compliance issues.
• Act as Crypto Custodian for the Defence Operating Unit and provide leadership, guidance and support to local security personnel and wider business teams.

What We’re Looking For

• Significant experience operating as a senior security representative within a defence, government or highly regulated environment.
• Strong knowledge of UK Government security standards, policies and frameworks, including JSP440, GovS007 and related security guidance.
• Experience developing, implementing and improving security policies, standards and compliance processes.
• Expertise across physical security, information security and personnel security controls.
• Excellent stakeholder management and communication skills, with the ability to influence at all levels and balance security requirements with business objectives.
• A proactive, self‑motivated approach with experience leading change, managing competing priorities and working independently.

Desirable Experience

• Previous experience within a UK Ministry of Defence environment.
• Knowledge of Defence Nuclear security controls and associated regulatory requirements.
• Experience managing security investigations and responding to complex security incidents.
• Experience leading or line managing security teams.

Benefits

• Flexible working options, including compressed fortnight arrangements where applicable
• Private healthcare
• Cash health plan
• Holiday buy and sell scheme
• Annual performance bonus opportunity
• Career development and learning programmes
• Professional membership support
• Pension scheme
• Employee assistance programme
• Inclusive employee networks and communities

Security Clearance

Due to the nature of our work, you must be a British Citizen for this role. You must be able to gain and maintain the highest level of UK Government security clearance.

Why Join Northrop Grumman UK?

A Mission to Believe In Every day, our teams contribute to building a safer, more secure and more connected world. Our work supports critical national security and defence capabilities, giving you the opportunity to make a meaningful impact through innovation, technology and expertise.

A Place to Belong and Thrive

We are committed to creating an environment where everyone feels valued, respected and empowered to succeed. Every voice matters, and we believe diverse perspectives drive stronger outcomes for our people, customers and communities.

Your Career, Your Way

Whether you're looking to deepen your expertise, broaden your experience or move into leadership, we'll support your development through challenging projects, mentorship, training and opportunities across our business.

Northrop Grumman is committed to hiring and retaining a diverse workforce, and encourages individuals from all backgrounds and all abilities to apply and consider becoming a part of our diverse and inclusive workforce.

We are a pioneering company. With careers across all areas: air, cyber, land, sea and space – our 90,000 employees work as one to defend and define the future. Northrop Grumman careers and internships are as varied as your interests, with a lifetime of potential that will give you every opportunity to do your best work. Working together with people from many backgrounds, personal passions and disciplines, we share a drive to push the boundaries of science, technology and engineering to meet the ever evolving needs of our customers worldwide.