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Senior Application Security Engineer

Poland · Job Posted April 10, 2026
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Job Description

We’re looking for a senior-level security expert to lead proactive security design and validation across complex web application environments.

Job Responsibility

  • Lead security architecture reviews and conduct in-depth threat modelling for new products and infrastructure
  • Perform hands-on penetration testing and security assessments to uncover and validate vulnerabilities
  • Research emerging threats and develop mitigation strategies to stay ahead of evolving attack vectors
  • Collaborate with engineering teams to embed security into the development lifecycle (DevSecOps)

Requirements

  • 7+ years in offensive and defensive security roles, with long-term project experience
  • Proven expertise in penetration testing (especially web applications) and threat modelling
  • Strong programming/scripting skills, particularly in Python
  • Deep knowledge in at least one core security domain (e.g., cryptography, secure architecture, authentication)
  • Excellent communication skills in English

Nice to have

  • Experience with cloud-native security (AWS, GCP, Kubernetes)
  • Familiarity with securing serverless or AI/ML platforms
  • Industry certifications such as OSCP, OSCE, or CISSP

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