Raytheon UK
Senior Systems Security Engineer

How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Date Posted:
2026-09-11
Country:
United Kingdom
Location:
High Wycombe, Buckinghamshire
Position Role Type:
Hybrid
At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.
Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.
Senior Systems Security Engineer – Training Services Delivery
Location(s): High Wycombe / Northolt / Shrivenham
Summary of Role:
The Future Joint Command and Staff Trainer (FJCAST) programme will transform the delivery of senior staff training, enabling Joint Headquarters, operational commands, coalition partners and allied nations to train together across Land, Maritime, Air, Space and Cyberspace domains. Through the integration of simulation, synthetic environments, exercise design, data exploitation, operational networks and coalition interoperability, FJCAST will support the training, preparation, experimentation and evaluation of UK and allied operational headquarters.
To assist with this, we have an exciting opportunity for a Senior Systems Security Engineer to provide the functional security governance, management and support to the Delivery Team across our FJCAST programme.
This is a key role in collaboratively working with the Engineering functional delivery teams in delivering optimal training solutions and services to the Customer, to schedule at the right cost, meeting quality, safety and security standards as necessary.
Job Summary:
The Senior Systems Security Engineer is a role that requires strong systems engineering skills that will be used to develop innovative products and solutions to complex systems, including top level requirements development, requirements analysis and allocation, design, verification, integration, and production/field support. This role sits within our Training Transformation Services (TTS) Business area and reports to the TTS Delivery Lead.
We value diverse skills and experience, so don't hold back. Your qualifications and knowledge could add tremendous value to our team. Our customers come from all different backgrounds, and so do our employees. If you're passionate about what you could accomplish here, we'd love to hear from you.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Main Duties:
Responsibilities to Anticipate:
Your day-to-day activities may include:
- Performing Task Lead duties (e.g., task planning, product owner, scrum master);
- Supporting the development of a Security Risk Management Framework (RMF) following the STRIDE model;
- Create suitable Secure by Design (SbD) planning and implementation policies and procedures to ensure all delivered systems are designed, implemented and operated using a SbD approach;
- Developing top-level system security requirements, and flowing down requirements and implementation concepts (SbD);
- Be part of the team who interacts with customers to define / refine requirements, solutions, trades, costs, implementation, system impacts, and effectiveness within an agreed schedule;
- Support developing plans and estimates, task execution, project tracking, reporting, and risk identification and mitigation plans;
- Identify / produce evidence to enable the successful assessment of systems in order to achieve the Authority to Operate (ATO) and allow for through life and end of life security management;
- Involvement in security testing with a view to obtaining ATO;
- Define, implement and or assess security solutions that meet the customer’s requirements and security posture;
- Consult and assist program line management with security architectures, SbD and security risk / problem / issue management;
- Show an understanding of Attack Threat Modelling / Critical Program Information Assessments;
- Understanding of Security Impact Assessment with reference to Change Management;
- Understanding, and compliance with, MoD technology release and export licensing policies;
- Supporting the development of bids and proposals; and,
- An understanding of the Earned Value Management (EVM) project methodology.
Qualifications and Experience Required:
Candidate must exhibit an exceptional degree of ingenuity, creativity and resourcefulness;
- Typically a Bachelor of Science degree (BSc) in Science, Technology, Engineering, or Mathematics (STEM) and 10 years of prior relevant experience, or a Masters Degree (MSc) in a related field and 7 years of prior relevant experience. In absence of a degree, 14 years of relevant experience is required;
- Evidence of experience in the fields of computer technology reverse engineering, or other systems security engineering fields;
- Experience generating Security and/or Cyber Security requirements, design and architecture artifacts, plans, and policies;
- Experience of Information Assurance;
- Technical leadership experience;
- Experience in Systems Engineering, including any of the following:
- System Requirements definition and analysis;
- System Test and Analysis;
- Systems Engineering Studies; and
- NIST Risk Management Framework (RMF) or STRIDE.
- Experience in systems security including but not limited to various computer hardware and software S/W operating system and application solutions in both a stand-alone and in LAN/WAN configurations and / or Security features and/or vulnerability analysis of various operating systems; and,
- Suitable active and transferable security clearance.


Get help with your application
Your very own career expert that helps elevate your application to the next level.
Qualifications We Value:
- Experience in design, development and implementation of secure systems;
- Accreditation / system assessment acceptance following Information Assurance Standards (IAS 1 & 2) and / or SbD;
- Understanding of obsolescence, patch & vulnerability management and change management with reference to Software, firmware, cryptography and hardware;
- Leading System Security Engineering Teams (Cyber);
- Experience in the implementation and business growth of secure systems throughout the entire life cycle of the system;
- Experience in solutions meeting robust systems security requirements;
- Program management experience with systems and security engineering;
- Broad understanding of technology;
- Royal Navy Training experience;
- Strategic planning and proposal writing skills;
- Strong interpersonal skills with the ability to interact positively with coworkers, suppliers, management, and customers in a team environment;
- Experience contributing in a team environment for the purpose of developing creative solutions to technical problems;
- A working knowledge of government IT security environments and requirements including MoD Joint Service Publications, Defence Standards and Conditions; Government Standard 7 (GovS 007: Security), safety and Integrated Logistoics Support (ILS) practices and policies;
- Recognised professional security qualifications such as CISSP, ISSAP, CISM, BCS CITP;
- Member of one or more professional bodies that are relevant to the role, such as, ISACA, ISSA UK, ISC2, CIISec;
- Grounding or qualification in systems architecture, such as MoDAF or Togaf; and,
- Experience of Linux Bash scripting, Python scripting, PowerShell scripting and/or Ansible Playbooks.
RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.
Privacy Policy and Terms:
Click on this link to read the Policy and Terms: Privacy Policy and Terms
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London