Cyber Security Researcher Internship - Summer 2027

CoreTech Security; Cheltenham; On-site; GBP 78,000 - 123,000; Full time

Benefits offered by this job

Accommodation provided

Paid internship

Salary during internship

Job summary

CoreTech Security is seeking motivated students for a paid summer 2027 internship in Cheltenham. You will work in small teams, tackling real security challenges and vulnerability research for trusted clients. The role offers hands-on experience in C/C++/Java, Python, and reverse engineering with real-world impact.

Ideal candidates have an active interest in ethical hacking, CTFs, networking, and hardware hacking. Accommodation is provided; a potential contract may follow for 2028 intake.

Qualifications

• Familiarity with C, C++ or Java required or preferred.
• Experience in Python scripting is advantageous.
• Basic understanding of Linux and shell usage expected.
• Participation in CTF challenges is a plus.
• General networking concepts helpful for security research.
• Experience with reverse engineering tools like Ghidra is beneficial.
• Familiarity with ethical hacking practices expected.
• Knowledge of Android adb shell is a plus.
• Interest in hardware hacking is desirable.

Responsibilities

• Work in small teams to deliver security research projects.
• Contribute to vulnerability research and bespoke security challenges.
• Demonstrate active interest and foundational knowledge across listed skills.

Skills

C/C++/Java programming

Python scripting

Linux shell

CTF participation

Networking basics

Ghidra reverse engineering

Ethical hacking

Android adb shell

Hardware hacking

Interpersonal skills

Tools

Ghidra

ADB

Linux shell

Job description

Closing Date - 9th November 2026, we reserve the right to close this advert early if we receive a high volume of suitable applications.

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 students with an active interest in subjects such as ethical hacking, vulnerability research and reverse engineering, to join our world-class research team for a paid summer 2027 internship. If you are going into your final year in 2027 you may be offered a contract for our 2028 graduate intake on completion of your internship.

By working closely with your peers in small, usually two-to-three person teams, our interns rapidly develop the skills necessary to deliver bespoke research and capabilities for our most trusted clients. Our intern projects are chosen specifically to give you direct insight into the sorts of projects we deliver for our clients, with real demands and as-yet unsolved technical challenges you’ll be expected to best. Just ask our previous interns!

Skills You May Have

• Familiarity with one or more high-level languages such as C, C++ or Java
• Experience in basic scripting using Python
• Familiarity with the Linux OS and working in the shell
• Participation in Capture the Flag (CTF) challenges
• A basic understanding of how computers communicate (networking)
• Reverse engineering using Ghidra
• Ethical hacking
• Familiarity with Android and adb shell
• Hardware Hacking
• Strong inter-personal skills and enthusiasm for working with others

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

Salary

Our salary for 2027 Summer interns is £28,000p.a. pro-rata for the Summer period. At the end of your internship you may be offered a role with us for our 2028 intake. If you are not graduating in 2028 then we may offer you a 2028 Summer internship.

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.

Accommodation

We know that finding a place to live in the Summer can be tricky and expensive. So accommodation will be provided for you, all paid for by us, at a local Student accommodation that is around a 15 minute walk from the office. Complete with High Speed Wi-Fi, bike storage, a laundry room and individual en-suite facilities.

Additional Details

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,