Vulnerability Researcher - Remote | Up to £135k + Benefits | UK, US, Australia, New Zealand
Our client is a deep-tech firm trusted by governments and defence organisations for the kind of work that doesn't make headlines. They specialise in solving the hardest problems in software and firmware security - from PAC, ASLR and CFI to encrypted firmware and beyond.
This isn't one for beginners or box-checkers. It's for engineers who enjoy making machines do what they weren't supposed to - and know the difference between understanding an exploit and building a reliable one.
Role Overview
You'll join a close-knit, elite team working on advanced vulnerability research and exploit development across a range of complex targets, including mobile platforms, embedded systems, and non-trivial binaries. The role is fully remote and demands a high level of autonomy, skill, and commitment.
Core Responsibilities
- Reverse engineering software and firmware to uncover security flaws
- Developing and demonstrating proof-of-concept exploits
- Analysing binary targets using tools like IDA Pro, Binary Ninja, or Ghidra
- Engaging in fuzzing, fault injection, symbolic execution, and virtualisation techniques
- Writing clean, efficient code in C/C++ and Python
- Collaborating in agile, low-ego research teams
Required Experience
- Proven expertise in vulnerability research and exploit development
- Deep understanding of OS internals, memory models, and binary formats
- Experience with static, dynamic, and symbolic analysis tools and techniques
- Strong low-level programming and debugging skills
- Eligible for security clearance in the UK, US, Australia, or New Zealand
- Degree (or equivalent experience) in Computer Science, Engineering, Cybersecurity or related field
Desirable
- Existing security clearance (Secret or above)
- Knowledge of anti-reversing techniques, implants, and advanced threat emulation
- Proficiency in multiple architectures (e.g. x86, ARM)
- Background in penetration testing or red team work
Package & Benefits
- Up to £135,000 base salary (or equivalent local currency)
- Health insurance, generous pension, bonus, and 25+ days holiday
- Fully remote - work from anywhere in your region
- High-impact projects and exceptional peer group
- Ongoing investment in training and personal development
No sponsorship available - candidates must have full and unrestricted right to work in their country of residence!
Please apply by clicking the link OR direct at security@circlerecruitment.com
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