Security Analyst (Cybersecurity)

TL;DR

Security Analyst (Cybersecurity): Protecting global infrastructure by combining threat investigation with security engineering to build and tune detection capabilities with an accent on SIEM optimization and incident response. Focus on designing high-fidelity alerting systems, automating containment strategies, and proactively identifying architectural blind spots.

Location: Onsite in Paris, France

Salary: €38,000 – €62,000 gross annually

Company

Proton provides encrypted communication and storage services focused on protecting digital privacy and fighting censorship.

What you will do

• Maintain and optimize the core security monitoring toolkit (SIEM) and refine high-fidelity detection rules.
• Monitor, triage, and investigate security alerts across all corporate infrastructure.
• Own the containment and mitigation of security incidents and develop actionable response playbooks.
• Analyze logs, endpoints, and network traffic to isolate anomalies and identify emerging risks.
• Collaborate with engineering teams to deploy secure architectures and implement OS hardening.
• Guide the wider company on security risks and promote a culture of IT security awareness.

Requirements

• Strong logical reasoning and the ability to correlate diverse data sources to identify attack patterns.
• Solid understanding of network security, authentication mechanisms, and endpoint defense.
• Deep knowledge of Linux-based systems, including architectural security and SELinux.
• Familiarity with malware TTPs and the ability to translate threat intelligence into SIEM rules.
• Intermediate-to-advanced proficiency in Python for scripting and automation.
• Excellent written and spoken English is required.

Nice to have

• 3-4 years of experience in a cybersecurity or security operations context.
• Hands-on experience with Elastic stack, Vector, or other large-scale log analysis tools.
• Proficiency in data analysis tools like Jupyter or Pandas for anomaly hunting.
• Practical knowledge of securing Docker, Kubernetes, and Cloud infrastructure.
• Industry-recognized security certifications.

Culture & Benefits

• Equity through stock options for all employees.
• Comprehensive health coverage, retirement options, and wellness support.
• High-impact work focused on digital privacy without VC or advertiser influence.
• Investment in professional growth and accelerated career development.
• Office perks including daily provided lunch, snacks, and transport allowances.
• Flexible working hours based on outcomes rather than fixed schedules.