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- Tasks: Lead innovative cyber research, prototype designs, and uncover security vulnerabilities.
- Company: Join Raytheon UK, a leader in defence and aerospace technology, shaping national security.
- Benefits: Enjoy flexible working, 25 days holiday, and a competitive salary with bonuses.
- Why this job: Be part of a collaborative team driving technological advancements for a safer world.
- Qualifications: Proficiency in programming, Linux systems, and strong analytical skills required.
- Other info: Hybrid work model available; must hold active enhanced DV clearance.
The predicted salary is between 43200 - 72000 £ per year.
Date Posted: 2026-03>
Country: United Kingdom
Location: Gloucester, South Gloucestershire
Position Role Type: Hybrid
Raytheon UK has a perm opportunity for a Principal Cyber Researcher to join our Cyber Research Group (CRG).
As a Principal Cyber Researcher, you will conduct cutting‐edge research and development across multiple cyber domains. You\’ll drive technical investigations, design rapid prototypes, and uncover emerging threats and vulnerabilities. In addition to hands‐on research, you\’ll be involved in day‐to‐day CRG operations, help shape the team\’s long‐term strategy, and support business development and bidding activities.
You will be based at our Gloucester site, working in a hybrid capacity. Due to the interesting work you will do, you must be eligible and willing to gain SC and enhanced DV clearance.
Key Responsibilities
Conduct deep‐dive research in vulnerability discovery, reverse engineering, and embedded systems
Design and build rapid prototypes to validate novel cyber capabilities and concepts
Analyse network protocols and system behaviours to identify security weaknesses
Collaborate with multidisciplinary teams to deliver research outcomes and technical solutions
Document methodologies, findings, and recommendations for internal and external stakeholders
Manage small research teams, track progress, and report to customers
Contribute to CRG\’s strategic planning and operational management
Support business development efforts, including proposal writing and technical briefings
Essential Skills and Experience
Proficiency in programming languages such as C, C++, or Python
Strong working knowledge of Linux‐based systems, including command‐line tools and system configuration
Excellent communication skills, both written and verbal
Solid understanding of networking concepts and protocols (e.g. TCP/IP, UDP, DNS, HTTP, ICMP)
Demonstrated analytical and problem‐solving capabilities, with methodical and inquisitive approach to technical problems
Experience in rapid prototyping using technologies such as Raspberry Pi, Arduino, and virtualised environments
Proven track record of managing research projects from concept through delivery
Desirable Skills and Experience
Hardware prototyping, PCB design and microcontroller programming.
Experience using penetration testing or red team tools.
Reverse engineering using Ghidra, IDA Pro, or Binary Ninja.
Vulnerability research, including exploit development and mitigation bypass techniques.
Embedded software development on ARM, AVR, PowerPC or MIPS platforms.
Experience with Radio Frequency (RF) systems, Software Defined Radios (SDRs), 2G/4G/5G, including tools like GNU Radio, Osmocom, srsRAN or USRP.
Network engineering experience in home lab or professional environments.
Benefits and Work Culture
37hr working week with early finish Fridays – start your weekend early!
An informal, flexible working culture that is output focused
25 days holiday + statutory public holidays, plus opportunity to buy and sell up to 5 days and up to 5 paid days volunteering
10.5% company pension contribution with 6% employee contribution
Annual company bonus scheme (discretionary)
Private Medical Insurance (grade dependent)
6x salary Life Assurance with pension
Flexible Benefits scheme with extensive salary sacrifice schemes, including Health Cashplan, Dental, and Cycle to Work, amongst others
Enhanced sick pay
Enhanced family friendly policies including enhanced maternity, paternity & shared parental leave
Raytheon UKYou will be based within the area of the business providing DevSecOps at scale, Artificial Intelligence, Machine Learning, cyber and geospatial intelligence capabilities to support the defence, intelligence and cyber sectors. Collaborating with customers and suppliers to deliver secure, mission critical systems using the latest technologies and innovations.
We take immense pride in being a leader in defence and aerospace technology. As an employer, we are dedicated to fuelling innovation, nurturing talent, and fostering a culture of excellence.
Joining our team means being part of an organisation that shapes the future of national security whilst investing in your growth and personal development. We provide a collaborative environment, abundant opportunities for professional development, and a profound sense of purpose in what we do. Together, we are not just advancing technology; we\’re building a community committed to safeguarding a safer and more connected world.
RTXRaytheon UK is a landed company and part of the wider RTX organisation. Headquartered in Arlington, Virginia, USA, but with over 180,000 employees globally across every continent, RTX provides advanced systems and services for commercial, military and government customers worldwide and comprises three industry‐leading businesses – Collins Aerospace Systems, Pratt & Whitney, and Raytheon.
Supporting over 35,000 jobs across 13 UK sites, RTX is helping to drive prosperity. Each year our work contributes over £2.7bn to the UK economy and offers a wealth of opportunities to 4,000 suppliers across England, Scotland, Wales and Northern Ireland. We\’re investing in all corners of the country, supporting 29,040 jobs in England, 3,040 in Northern Ireland, 1,900 in Scotland and 1,600 in Wales.
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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.
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Principal Cyber Researcher employer: Pratt & Whitney
Contact Detail:
Pratt & Whitney Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Principal Cyber Researcher
✨Tip Number 1
Familiarise yourself with the latest trends in cyber security, especially in vulnerability discovery and reverse engineering. This will not only help you during interviews but also demonstrate your passion and commitment to staying updated in this fast-paced field.
✨Tip Number 2
Engage with online communities and forums related to cyber security. Networking with professionals in the field can provide insights into the role and may even lead to referrals, which can significantly boost your chances of landing the job.
✨Tip Number 3
Consider working on personal projects that involve rapid prototyping or vulnerability research. Showcasing these projects in discussions or interviews can highlight your hands-on experience and problem-solving skills, making you a more attractive candidate.
✨Tip Number 4
Prepare for technical interviews by practising coding challenges in languages like C, C++, or Python. Being able to demonstrate your programming proficiency in real-time can set you apart from other candidates and show your readiness for the role.
We think you need these skills to ace Principal Cyber Researcher
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights relevant experience and skills that align with the job description. Focus on your proficiency in programming languages, Linux systems, and any experience with rapid prototyping or vulnerability research.
Craft a Compelling Cover Letter: Write a cover letter that showcases your passion for cyber research and your understanding of the role. Mention specific projects or experiences that demonstrate your analytical skills and problem-solving capabilities.
Highlight Relevant Projects: In your application, include details about any relevant projects you've managed or contributed to, especially those involving reverse engineering, embedded systems, or network security. This will show your hands-on experience in the field.
Proofread Your Application: Before submitting, carefully proofread your application materials. Check for spelling and grammatical errors, and ensure that all information is clear and concise. A polished application reflects your attention to detail.
How to prepare for a job interview at Pratt & Whitney
✨Showcase Your Technical Skills
As a Principal Cyber Researcher, you'll need to demonstrate your proficiency in programming languages like C, C++, or Python. Be prepared to discuss specific projects where you've applied these skills, especially in vulnerability discovery and reverse engineering.
✨Prepare for Problem-Solving Questions
Expect to face technical questions that assess your analytical and problem-solving capabilities. Practice explaining your thought process when tackling complex technical problems, as this will showcase your methodical approach.
✨Highlight Your Project Management Experience
Since managing research projects is a key responsibility, be ready to share examples of how you've successfully led teams from concept through delivery. Discuss any challenges you faced and how you overcame them.
✨Understand the Company’s Vision
Familiarise yourself with Raytheon UK's mission and values. Being able to articulate how your skills and experiences align with their goals will demonstrate your genuine interest in the role and the company.