Security Researcher - Team Lead at CloudLinux

About CloudLinux and Imunify360

Imunify360 is a security suite from CloudLinux Inc, built to protect shared, VPS, and dedicated servers with an automated, multi-layer approach to attack prevention. CloudLinux is a remote-first company focused on Linux infrastructure and security products that increase operational efficiency for hosting providers. Learn more at Imunify360.com and cloudlinux.com.

Role overview

We are seeking a Security Researcher - Team Lead to join the Imunify web protection team. You will lead a team of security engineers and researchers to drive research, improve WAF rules, and deliver robust web protection features. This fully remote role allows you to work from anywhere worldwide while leading technical planning, code reviews, and new security initiatives.

Key responsibilities

• Manage and lead the Web Protection team, mentoring engineers and researchers.
• Guide technical planning, review code, and supervise new releases and deployments.
• Monitor production data, improve Web Application Firewall (WAF) rules, and refine bot protection strategies.
• Drive research and experiments on web attacks, bot mitigation, and protection techniques.
• Help mature and maintain the team codebase, primarily written in Python.
• Develop reproducible tests and automate monitoring and testing workflows.

Requirements

• Bachelor degree in Computer Science, Applied Mathematics, or similar field.
• Minimum 3 years of experience as a team lead or technical lead role.
• Strong Python experience, including prototyping and automation for security tasks.
• Deep understanding of web security, network security, and bot protection techniques.
• Practical knowledge of SQL query writing and optimisation.
• Good English communication skills at upper-intermediate level or higher.

Nice to have

• Experience with web hosting environments, Linux command line, and hosting control panels such as cPanel or DirectAdmin.
• Familiarity with ModSecurity, OSSEC, regular expression syntax for rules, and WAF tuning.
• Experience with advanced Linux debugging tools and low-level monitoring.

Personal qualities

• Fast learner, proactive, and self-motivated.
• Excellent prioritisation and problem solving skills, able to work with ambiguous requirements.
• Strong collaborator and team player, with leadership and mentoring skills.

Benefits

• Fully remote work with flexible hours - work from any location worldwide.
• Paid one month vacation per year and unlimited sick leave.
• Compensation or reimbursement for private medical insurance.
• Co-working and gym or sports reimbursement.
• Budget for education and professional development.

How to apply

Apply via the Workable job link for this posting. By applying you consent to processing of your personal data in accordance with our candidate privacy notice. Please include your resume and relevant examples of security research or WAF rule development.