Senior Security Researcher

Senior Security Researcher

Salary: £90,000 - £100,000 + attractive benefits Location: UK (Remote-first / occasional London meetings) Employment: Full Time, Permanent

This is an opportunity to join a high-growth, PE-backed cybersecurity software company whose technology protects organisations against sophisticated file-based and zero-day threats. Following significant investment and continued growth, the business is expanding its technical capability and strengthening its dedicated security research function. This senior appointment will take ownership of complex, open-ended investigations and turn original research into practical defensive capability. You will explore unfamiliar technologies, analyse malicious material, build proof-of-concept files and become the internal subject-matter expert, working closely with developers to translate findings into live product improvements.

The Role

As a Senior Security Researcher, you will independently investigate emerging threats, unfamiliar file formats, technical specifications and potentially malicious content. You will design experiments, develop proof-of-concept files and produce clear, evidence-based findings that other technical teams can use. The ideal person is naturally curious and comfortable beginning without a known answer or established playbook. You may come from security research, threat hunting, malware analysis, detection research or offensive security, but you must be able to demonstrate investigations you have personally owned and explain how your work created a practical outcome.

Senior Security Researcher Responsibilities

Lead independent research into emerging threats, attack techniques, file formats and security vulnerabilities. Investigate unfamiliar technical material and rapidly develop subject-matter expertise. Analyse suspicious files, malware, scripts and shellcode using static and dynamic techniques. Determine whether material is malicious or benign and understand its likely behaviour and objectives. Design experiments and build proof-of-concept files, prototypes and defensive solutions. Translate research findings into practical product capabilities alongside Software Engineering. Act as the internal SME, supporting developers and other technical teams through implementation. Produce clear, repeatable and evidence-based technical reports and demonstrations. Use AI-assisted tools to accelerate research while critically validating their output and limitations. Share research through internal briefings, technical publications, demonstrations or industry events.

Senior Security Researcher Benefits