At a Glance
- Tasks: Protect people and information while supporting security processes in a national defence programme.
- Company: Cavendish Nuclear, part of Babcock International Group, focused on energy security and national protection.
- Benefits: Attractive salary, generous holiday, matched pension scheme, and health consultations.
- Other info: Flexible working options and great career development opportunities await you.
- Why this job: Join a mission-driven team and make a real impact on national security.
- Qualifications: Experience in administration, strong Excel skills, and excellent communication abilities.
The predicted salary is between 30000 - 40000 € per year.
Location: Warrington, Cheshire + Hybrid Working Arrangement
Compensation: Attractive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF 72971
Safeguarding People, Programmes and National Security – Your Career Starts Here
At Cavendish Nuclear, we’re working to create a safe and secure world, together. If you join us, you can play your part as a Junior Security Administrator at our Warrington, Cheshire site.
The role
As a Junior Security Administrator, you play a vital role in protecting people, information and critical infrastructure within a major national defence programme. Supporting the Head of Security and wider security team, you help ensure security processes operate smoothly, compliantly and effectively across a highly regulated environment. The role is 37 hours per week, Monday to Friday, and is based at our Warrington site. Hybrid working patterns are available, and some travel to other Cavendish Nuclear, Babcock and customer sites will be expected.
Day‑to‑day, You’ll Be Required To:
- Providing personnel security advice in line with current HMG and company security policy
- Managing security clearance processes, including upgrades, transfers and access requests
- Maintaining accurate security records, spreadsheets and compliance data using Microsoft Excel
- Coordinating starters, leavers, site access and visitor processes across secure facilities
- Supporting audits, training compliance and general administration for the Security team
Essential Experience Of The Junior Security Administrator:
- Experience in an administrative, coordination or support role within a structured environment
- Strong working knowledge of Microsoft Excel and Microsoft Office applications
- Excellent written and verbal communication skills
- High attention to detail with the ability to manage data accurately
- Ability to work independently while contributing positively to a team environment
Qualifications For The Junior Security Administrator:
- Membership with the Defence and Security Industry Association (DISA) or the Security Institute is highly desirable
- We value difference and don’t have a fixed idea when it comes to background or education, provided you can show the required level of experience and willingness to learn then we would like to hear from you
Security Clearance
The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk)
What We Offer:
- Generous holiday allowance
- Matched contribution pension scheme, with life assurance
- Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
- Employee share scheme
- Employee shopping savings portal
- Payment of Professional Fees
- Reservists in the armed forces receive 10‑days special paid leave
- Holiday Trading is a benefit that allows UK Cavendish employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement. This Window opens February through to March annually.
- ‘Be Kind Day’ enables employees to take one working day's paid leave a year (or equivalent hours) to undertake volunteering work with their chosen organisation or registered charity
- Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.
Cavendish
We’re Cavendish Nuclear — a team of c5,000 specialists and a core part of Babcock International Group. Here, you’ll be part of something bigger. Across clean energy, defence, and civil decommissioning, your work will contribute to projects that are critical to energy security and national protection. Together, we’re shaping a future that lasts — not only through the impact we make, but through meaningful careers that respect your work‑life balance. Join us and discover how far we can go, together.
We are a disability confident committed employer. If you have a disability or need any reasonable adjustments during the application and selection stages, please email careers@babcockinternational.com with the subject header ‘Reasonable adjustments requirement’. We’re committed to building an inclusive culture where everyone’s free to thrive. We are happy to talk about flexible working – please ask about alternative patterns of work at interview.
Closing date: 19/05/2026
Security Advisor in Warrington employer: Cavendish Nuclear
Cavendish Nuclear is an exceptional employer, offering a supportive work culture that prioritises employee wellbeing and professional growth. With generous benefits such as a matched pension scheme, flexible working arrangements, and opportunities for volunteering, employees can thrive both personally and professionally while contributing to vital national security projects in Warrington, Cheshire.
StudySmarter Expert Advice🤫
We think this is how you could land Security Advisor in Warrington
✨Tip Number 1
Network like a pro! Reach out to current or former employees at Cavendish Nuclear on LinkedIn. A friendly chat can give us insider info about the company culture and maybe even a referral!
✨Tip Number 2
Prepare for the interview by researching common security scenarios. We want to show that you can think on your feet and handle real-life challenges in security administration.
✨Tip Number 3
Practice your communication skills! As a Junior Security Administrator, you'll need to convey complex information clearly. Try explaining security concepts to a friend to sharpen your skills.
✨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 Security Advisor in Warrington
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Junior Security Administrator role. Highlight any relevant experience, especially in administrative or coordination roles, and don’t forget to showcase your skills with Microsoft Excel and Office applications.
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you’re passionate about security and how your background aligns with our mission at Cavendish Nuclear. Keep it concise but impactful!
Show Off Your Attention to Detail:In a role that requires high attention to detail, it’s crucial to demonstrate this in your application. Double-check for any typos or errors, and ensure your information is presented clearly and accurately.
Apply Through Our Website:We encourage you to apply through our website for the best chance of success. It’s straightforward and ensures your application goes directly to us, making it easier for us to review your credentials.
How to prepare for a job interview at Cavendish Nuclear
✨Know Your Security Policies
Familiarise yourself with current HMG and company security policies. Being able to discuss these during your interview shows that you’re proactive and understand the importance of compliance in a structured environment.
✨Excel at Excel
Since strong knowledge of Microsoft Excel is essential, brush up on your skills before the interview. Be prepared to discuss how you've used Excel in past roles, especially for managing data and maintaining records.
✨Communicate Clearly
Excellent written and verbal communication skills are crucial for this role. Practice articulating your thoughts clearly and concisely, as you may be asked to explain complex security processes or your previous experiences.
✨Show Your Team Spirit
While the role requires independent work, it’s also about contributing positively to a team. Be ready to share examples of how you’ve collaborated with others in past roles, highlighting your ability to work well within a team environment.
