Senior Security Research Engineer

Role

Security Research Engineer – Threat Protection

at MimecastSecurity Research Engineer at Mimecast will be a pivotal technical expert dedicated to researching, analyzing, and developing detections for malware and phishing threats. This role involves dissecting real-world file and web threats, building and optimizing detection signatures, and driving improvements to advanced detection systems. The work combines in-depth threat investigation with a focus on enhancing capabilities to block evolving attacks and provide actionable insights to customers and internal teams.

Responsibilities

Analyse and classify file and web-based threats, including credential phishing campaigns and a wide range of malware families.

Develop, test, and maintain detection signatures (Yara, ClamAV, and proprietary solutions) for both phishing and malware threats targeting Mimecast customers.

Dissect malicious files, URLs, and email payloads using static and dynamic analysis tools.

Automate threat analysis and detection processes.

Investigate emerging attack techniques and develop proactive, high-quality detections.

Measure and improve detection efficacy using large-scale data analysis tools.

Collaborate with engineering on integrating detection scanners and optimizing scanning systems.

Create and maintain documentation for detection techniques, code, and analysis findings.

What You’ll Bring

Deep technical proficiency in malware and phishing analysis, including hands-on experience with real-world threats.

Strong experience writing and tuning detection signatures (Yara, ClamAV, or similar).

Advanced scripting and automation skills (Python required; additional scripting languages a plus).

Experience with static, dynamic or behavioural analysis of malicious files and URLs.

Familiarity with web technologies (HTML, JavaScript, URL manipulation).

Proficiency in analysing large data sets and extracting actionable insights.

Experience setting up and using virtualization or sandboxing technologies for threat analysis is a plus.

Strong analytical and problem-solving skills, with excellent attention to detail.

Ability to work independently and collaboratively in a remote, global team.

Minimum of 5 years of technical experience in cybersecurity, malware analysis, detection engineering, or a related field.

What We BringJoin our Threat Protection team to accelerate your career journey, working with cutting-edge technologies and contributing to projects that have real customer impact. You will be immersed in a dynamic environment that recognizes and celebrates your achievements. Mimecast offers formal and on-the-job learning opportunities, a comprehensive benefits package, and cross-functional teamwork to build your knowledge.

Our Hybrid ModelWe provide flexibility to live balanced, healthy lives through a hybrid working model that champions both collaboration and individual flexibility. Employees are expected to come to the office at least two days per week. Benefits of in-person collaboration include:

Fosters a culture of collaboration, communication, performance and learning

Drives innovation and creativity within and between teams

Supports important interpersonal relationships and connections

Salary: The UK base salary range for this position is £76,000-£114,000 base + benefits. This reflects the minimum and maximum target for new hire salaries for this position. This position may also be eligible for bonus, incentive plans, and other related benefits.

DEI StatementCybersecurity is a community effort. We’re committed to building an inclusive, diverse community that welcomes everyone. We are proud to be an Equal Opportunity and Affirmative Action Employer and encourage applicants from traditionally underrepresented groups. We consider everyone equally; protected characteristics will not affect your application.

Due to certain obligations to our customers, an offer of employment will be subject to successful completion of applicable background checks, conducted in accordance with local ..... full job details .....