Web Security Malware Analyst (Hybrid – Lisbon)
Core
Analyzing, reverse engineering, and securing browser-based applications and web extensions to identify malicious behaviors and vulnerabilities.
Role type
Front-end/Web Engineer specializing in web security and malware analysis
Builds
Secure browser extensions and detection rules for malicious activity
Domain
Web Security / Cybersecurity
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
JavaScript (advanced concepts, OOP, debugging, reverse engineering), HTML, CSS, JSON, AJAX, ES6/ES7, Node.js, Webpack, front-end frameworks (React, Angular, jQuery)
Preferred skills
DAST/SAST methodologies, Burp Suite, Nmap, obfuscation/de-obfuscation techniques, technical report writing
Technologies
JavaScript, Node.js, Webpack, React, Angular, jQuery, Burp Suite, Nmap
Responsibilities
Analyze web browser extensions using static and dynamic methods to identify malicious behavior; Reverse engineer and debug JavaScript to understand complex or obfuscated code; Detect, document, and report security vulnerabilities with root cause analysis; Assist in the investigation and takedown of malicious browser extensions; Design and implement detection rules and security patterns; Monitor emerging threat trends and share findings; Propose improvements and support automation of existing processes; Serve as a technical reference point for team members.
Seniority
Mid-level, hands-on IC
