Experienced Vulnerability Researcher

Hackajob Ltd; Harnham; On-site; GBP 61,000 - 101,000; Full time

Benefits offered by this job

Annual bonus

Private medical

Life cover

Pension 8%

Relocation support

Training & development

Cycle to work

O'Reilly books

Holiday allowance

Job summary

Hackajob Ltd is seeking a vulnerability researcher to join a world-class security team focused on cutting-edge research for UK clients. The role covers Android/Linux/iOS reverse engineering, code auditing, and tool development.

You'll work with ARM, x86 and MIPS architectures using Ghidra or IDA Pro, contributing to real-world security fixes and novel techniques. Strong C/C++ skills and teamwork are essential.

Qualifications

• Bug hunting, ethical hacking or reverse engineering background.
• Inquisitive mindset and enthusiasm for difficult research.
• Experience leading technical projects.
• Passion for cyber security and bug hunting.
• Familiarity with IDA Pro or Ghidra.
• Familiarity with ARM, AARCH64, x86, x64 and MIPS.
• Knowledge of bug hunting and vulnerability research.
• Ethical hacking experience across web and network tech.
• Knowledge of exploitation techniques and mitigations.
• Experience with Linux and its internals.
• Experience with Android or iOS and their internals.
• Good understanding of C or C++.
• Ability to share knowledge and work with team.

Responsibilities

• Deeply understand how Android devices work from apps to kernel.
• Reverse engineer proprietary binaries using ARM, ARM64, and MIPS.
• Audit C and C++ source code to spot security flaws.
• Develop novel tools and techniques for vulnerability research.
• Work with other vulnerability researchers and software engineers.
• Design and produce niche solutions with real-world impact.
• Produce proof-of-concepts in C, C++, Python or assembly.

Skills

Bug hunting

Ethical hacking

Reverse engineering

Vulnerability research

Project leadership

ARM architecture

x86/x64 familiarity

Linux internals

Android internals

iOS internals

C/C++ knowledge

Knowledge sharing

Tools

IDA Pro

Ghidra

Job description

Salary: £61,000 - 101,000 per year

Requirements

• We are looking for candidates with a bug hunting, ethical hacking or reverse engineering background.
• We require an inquisitive mindset and enthusiasm for solving difficult research tasks.
• We are seeking experienced researchers with skills and experience in several of the listed areas, as well as the ability to lead technical projects.
• We value a passion for cyber security and an interest in bug hunting and recent vulnerabilities.
• We expect familiarity with reverse engineering in IDA Pro or Ghidra.
• We expect familiarity with one or more of ARM, AARCH64, x86, x64 and MIPS.
• We expect knowledge of bug hunting and vulnerability research.
• We expect ethical hacking experience, including familiarity with web and network technologies.
• We expect knowledge of exploitation techniques and mitigations.
• We expect experience and knowledge of Linux and its internals.
• We expect experience and knowledge of Android or iOS and its internals.
• We expect a good understanding of C or C++.
• We value the ability to share knowledge and work with team members.

Responsibilities

• We develop a deep understanding of how Android mobile devices work, from applications to kernel.
• We reverse engineer proprietary binaries using our knowledge of ARM, ARM64, and MIPS.
• We audit C and C++ source code to spot security flaws.
• We grow the teams capabilities by developing novel tools and techniques for cutting-edge vulnerability research.
• We work in tandem with other vulnerability researchers and software engineers.
• We design and produce niche solutions with immediate real-world impact.
• We produce proof of concepts in the most suitable language for the project, which could be C, C++, Python or assembly code.

Technologies

• ARM
• Android
• Support
• Linux
• Mobile
• Network
• Python
• Security
• Web
• iOS
• C++

More

We are partnering directly with CoreTech Security to hire for this vulnerability researcher role. You will join a world-class team of developers and vulnerability researchers focused on delivering bespoke products and research for some of the most interesting cyber security clients in the UK. Our team is highly experienced, deeply technical, and combines rapid prototyping, security research and software engineering. We use Ghidra as our tool of choice for reverse engineering. We also offer a strong benefits package, including promotions based on technical excellence, 25 days holiday plus bank holidays, holiday purchase options, additional holiday accrual with service, relocation support, training and development opportunities, an OReilly books subscription, regular technical and social events, free refreshments, private medical cover and healthcare support, an annual bonus scheme, 8% company pension contribution, life cover, enhanced maternity/paternity/adoption leave, and an enhanced cycle-to-work scheme.

last updated 40 week of 2026