Junior Vulnerability Researcher - September 2027

CoreTech Security; Cheltenham; On-site; GBP 32,000 - 42,000; Full time

Benefits offered by this job

Promotions based on technical merit

25 days holiday + bank holidays

Relocation cost support

Training and development opportunities

O'Reilly books subscription

Company events and seminars

Free seasonal fruit and beverages

Private healthcare including GP access

Pension with 8% employer contribution

Death in Service 4x base salary

Enhanced parental leave

Job summary

CoreTech Security, based in the UK, invites applications for a Junior Consultant starting September 2027. You will join the CoreTech Academy to rapidly upskill in bug hunting and reverse engineering under mentorship, with exposure to diverse projects across the security domain.

The role emphasizes curiosity, persistence and hands-on research on mobile OS and embedded devices, using Ghidra and languages like C/C++, Python or assembly. A passion for cybersecurity is essential.

Qualifications

• Interest in how vulnerabilities in binaries, exploits and their mitigations work.
• Experience with Reverse Engineering on ARM/AArch64, x86, or MIPS.
• Familiarity with OS internals and working in a command shell environment.
• Familiarity with C and/or C++ programming.
• Experience in Python scripting.
• Basic understanding of TCP/IP and networking concepts.
• Passion for technology and solving difficult and complex problems.

Skills

Reverse Engineering

C/C++ programming

Python scripting

OS internals

Networking basics

Problem solving

Low-level security

Tools

Ghidra

Job description

CoreTech Security’s mission is to deliver high-end security research and bespoke solutions to some of the most interesting cyber security clients in the UK. In practice, this means that we have built a world-class team of vulnerability researchers, reverse engineers, and high-assurance software engineers.

CoreTech is looking for talented individuals with an active interest in low-level software vulnerability research and reverse engineering. In practice this means you will be familiar with native languages (e.g. C/C++), and ideally have some understanding of how computer programs are loaded and executed on Linux-based platforms.

Our primary focus is conducting offensive security research against mobile operating systems and other embedded devices such as routers and CCTV cameras. Our research team use Ghidra as our tool of choice for reverse engineering and produce proof of concepts in the most suitable language for the project which could be C, C++, Python or assembly code. The role requires an inquisitive mindset, persistence and enthusiasm for solving difficult research tasks. Knowledge of hardware would be beneficial to this role.

CoreTech Academy

As a CoreTech Junior Consultant you will be enrolled on the CoreTech Academy where you’ll be provided with the opportunity to rapidly skill up in bug hunting and reverse engineering through a mix of training, mentoring and shadowing with our experienced team. The Academy also provides the opportunity to attend seminars/presentations on a whole range of subjects, presented by colleagues from across the business.

Skills You Must Have

• An interest in how software vulnerabilities in binaries, exploits and their mitigations work.
• Experience with Reverse Engineering code using architectures such as ARM/AArch64, x86 or MIPS.
• Familiarity with Operating System internals and working in a command shell environment.
• Familiarity with C and/or C++ programming.
• Experience in basic scripting using Python.
• A basic understanding of TCP/IP and networking concepts.
• A passion for technology and a genuine interest in solving difficult and complex problems.

We are looking for candidates with a passion and enthusiasm for cyber security specifically in the field of Vulnerability Research. Ideal candidates will be able to demonstrate an active interest and foundation knowledge in several of the skills listed above.

This is a Junior level role starting in September 2027 - you may be a recent graduate or someone that has some work experience and active interest in the area of Vulnerability Research.

Work Benefits

• Promotions are based on technical excellence and reviewed regularly
• 25 days holiday per year (with bank holidays on top), option to buy/sell up to 5 days per year
• Level up with an extra day of holiday per year, up to an extra 5 days, starting from 2 years' service
• We offer financial support to cover HMRC allowable costs of relocating if you’re moving to the area
• Training and development opportunities to support your career aspirations
• O'Reilly books subscription which provides access to huge range of technical books
• Regular events including internal technical conferences, company socials and pizza-fuelled lunchtime seminars
• Free seasonal fruit, tea, coffee, milk, squash and hot chocolate

Private healthcare including access to

• Private online GP, and a helpline to speak with various healthcare professionals
• Physiotherapists, osteopaths or chiropractors for muscle, bone, and joint pain
• Mental health - counselling, and specialist consultations and treatment with psychologists and cognitive behavioural therapists
• Annual Health assessment

Financial Benefits

• A company bonus scheme so that everybody is rewarded for company success. This is an annual award that is based on the company hitting its targeted forecast. We have achieved this every year to date
• 8% company contribution to pension with no minimum requirement for employee contribution
• Death in Service cover of 4x base salary

Lifestyle Benefits

• Enhanced maternity/paternity/adoption leave: 12 weeks maternity leave at full pay as soon as you join, further enhanced to 20 weeks full pay from 2 years’ service. 2 weeks paternity leave at full pay as soon as you join, further enhanced to 4 weeks full pay from 2 years’ service
• Enhanced cycle-to-work scheme including the ability to purchase a bike over £1,000 (e-bikes, specialist cycles and trikes allowed)

Salary

Our graduate salary for September 2027 is £38,000. We appreciate that starting work in a new location can be expensive at a time when you are just starting out on your career. To help with this, we offer:

• A zero-interest graduate loan of up to £2,000, repaid monthly during your second year of service
• If you're moving to the area, we offer financial support to cover allowable costs of relocating

We will also perform 6 monthly pay reviews for your first two years and aim for our graduates to be promoted to consultant grade within two years of joining.

Location

We are based in the centre of Cheltenham in a stunning new build contemporary office, 5 minutes walk from the local shops and cafes. Our website has a few pictures, which you can take a look at.

Additional Details

Please note, due to sensitivity of the role, successful applicants must be British Citizens and willing to undergo extensive background checks to obtain a security clearance.

Application Process

Our interview process is quick and to the point: if you look like a good fit for the role, we'll schedule a brief call to discuss it in more detail and answer any questions you may have. If that goes well, we'll arrange a technical interview to understand your level of experience. We aim to get back to you with an answer within a couple of days of the technical interview. If you’re looking for a challenging role where you can make a real impact in the world, in a friendly environment and with all the support to advance your career.