Ciklum is looking for a Expert Cyber Security to join our team full-time in Poland.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role:

As a Expert Cyber Security, become a part of a cross-functional development team engineering experiences of tomorrow. This role blends proactive design with hands-on security validation in web application development. You will focus on long-term security improvements by identifying and mitigating risks before they materialize.

Responsibilities:

• Architect & Threat Model: Lead security design reviews and conduct in-depth threat modeling for new products and critical infrastructure.
• Research & Build: Investigate emerging threats and novel attack vectors, then use your findings to design and build defense strategies to mitigate them.
• Assess & Penetrate: Perform hands-on penetration testing and security assessments against our most complex systems to discover and validate vulnerabilities.

Requirements:

• 7+ years of hands-on long-term projects with a strong background in both offensive and defensive security.
• Significant, proven experience in penetration testing (web applications preferred) and a deep understanding of an attacker's mindset.
• Strong programming and scripting skills (Python preferred) with experience building security tools, automation, or prototypes.
• Deep technical knowledge in at least one core security domain, such as cryptography, authorization / authentication, secure architecture, network security.
• Very good communication skills (English).

Desirable:

• Experience securing modern technologies like serverless architectures or AI/ML platforms.
• Experience with secure architectures for cloud-native environments (AWS, GCP, Kubernetes).
• Relevant industry certifications (e.g., OSCP, OSCE, CISSP).

What`s in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy flexibility – full remote working possibilities
• Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

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Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.