Salary: £50,000 - 90,000 per year Requirements: Proficiency in at least one programming language (C, C++, Python) Familiarity with assembly language (reading or writing) Experience in reverse engineering using tools such as IDA Pro, Ghidra, or Binary Ninja Strong knowledge of Linux-based systems, including command-line tools and system configuration Demonstrated analytical and problem-solving skills, with a methodical and inquisitive approach to technical challenges Solid understanding of network protocols Ability to rapidly learn and adapt to new technologies and domains Proven track record of identifying, analysing, and reporting vulnerabilities in complex systems (desirable) Experience using or developing fuzzers (desirable) Practical experience emulating hardware platforms with QEMU or similar tools to support security research and analysis (desirable) Embedded software development for platforms such as ARM Cortex, AVR, or MIPS (desirable) Familiarity with Radio Frequency (RF) systems and Software Defined Radios (SDRs), including 2G/4G/5G technologies and tools such as GNU Radio, Osmocom, srsRAN, or USRP (desirable) Network engineering experience (professional or home lab) (desirable) Hardware development and prototyping, including PCB design and microcontroller programming (desirable) Responsibilities: Perform hardware and software teardowns, characterisation, and reverse engineering Conduct detailed analysis of platforms to identify security weaknesses, bugs, and potential exploits Examine network protocols and system behaviours to uncover vulnerabilities Collaborate with cross-functional teams to deliver innovative technical solutions and research outcomes Produce clear, structured documentation of findings, methodologies, and recommendations for both internal and external stakeholders Lead teams of researchers and report to customers Assist with business development activities and winning new work Technologies: ARM Embedded GNU Hardware Support Linux Network Python QEMU Security C++ DevSecOps Machine Learning More: At Raytheon UKs Cyber Research Group (CRG), we are seeking a highly skilled and analytically driven Principal Vulnerability Researcher to support advanced research and development initiatives. You will be based at our Gloucester site, enjoying a hybrid working model within an informal, flexible culture that is output-focused. We offer a 37-hour working week with early finish Fridays, 25 days holiday plus public holidays, a generous pension scheme, private medical insurance, and enhanced family-friendly policies. Joining our team means becoming part of an organisation committed to national security and investing in your personal growth and development. last updated 11 week of 2026