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?
#LI – Hybrid: 6x/msc from the office in Kraków
What you’ll be doing
- Lead security research projects targeting critical systems and services.
- Perform advanced 0-day vulnerability discovery, exploit development, reverse engineering, and fuzzing.
- Analyze and interpret the evolving threat landscape, delivering actionable insights.
- Engage with cybersecurity leads, technology functions, and global business teams to ensure risk reduction.
- Drive automation, tooling, and AI-driven innovation (e.g., applying GenAI, LLMs, and AI for Security in vulnerability discovery and validation).
- Support security testing of emerging technologies, mobile platforms, wireless protocols, and hardware.
- Maintain strong collaboration with Offensive Security and Cybersecurity Engineering teams.
- Produce security research outputs and articulate business risk impact to senior stakeholders.
Note: Detailed project information will be shared during the recruitment process.
What you get in return
- 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
Who we’re looking for
- 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.
I will handle your recruitment
Patrycja Kachel
