Principal Security Researcher

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.

Join Our Client’s Team as a Principal Security Researcher – Drive Cybersecurity Innovation with Offensive Security

Are you passionate about discovering zero-day vulnerabilities, developing exploits, and innovating security research with AI? Our client, a global leader in financial services, is looking for a Principal Security Researcher to join its Cybersecurity Research & Offensive Security (CROS) team, playing a critical role in identifying risks and building scalable solutions to strengthen resilience against sophisticated cyber threats.

This role demands technical mastery, out-of-the-box thinking, and the ability to operate within highly sensitive projects that directly impact global security posture.

Sounds like your kind of challenge?

• Flexible cooperation model
• Hybrid work setup –6x/msc from the office in Kraków - remote days available depending on the client’s arrangements
• Collaborative team culture – work alongside experienced professionals eager to share knowledge
• Continuous development – access to training platforms and growth opportunities
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment – laptop and essential software provided

• Proven experience in delivering highly sensitive cybersecurity research projects.
• Deep expertise in:
  • Vulnerability discovery and exploit development (0-day, vulnerability disclosure)
  • Reverse engineering, fuzzing, penetration testing, black-box and source code review
  • Software security, system architecture, and mobile security (Android, iOS)
  • Hardware hacking and wireless technology
• Strong programming background and automation experience.
• Familiarity with AI for security research, leveraging and training AI models for discovery/validation of vulnerabilities.
• Solid understanding of Linux, Windows, Android, and iOS.
• Exceptional analytical and problem-solving abilities, coupled with clear communication skills.
• Degree in Computer Science (or equivalent experience).
• Active participation in cybersecurity industry and vulnerability disclosure programs is a plus.

Preferred Certifications & Skills

• Offensive Security, CREST, or relevant advanced security certifications.
• Hands-on experience with security for AI systems, LLM security risks, and GenAI exploitation models.

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.