Lead Security Testing Engineer

We are looking for a Lead Security Testing Engineer to drive security assessments, penetration testing, and vulnerability management efforts across SaaS services and on-prem solutions focused on DNS/DHCP protocols. The ideal candidate will bring deep technical expertise in application security, threat modeling, and secure development practices, while guiding teams toward building more resilient and secure systems.

Responsibilities

• Perform security assessments, application security reviews, and penetration testing for SaaS services and on-prem solutions centered on DNS/DHCP protocol.
• Review vulnerability findings from SAST, DAST, SCA, container, secrets, and infrastructure security scanning tools, and define appropriate validation approaches.
• Validate security remediations across applications, platforms, cloud services, infrastructure components, and development toolchains to ensure vulnerabilities are effectively addressed and root causes eliminated.
• Plan, execute, and analyze application security testing, including penetration testing, vulnerability scanning, and code reviews.
• Interpret penetration test results and recommend remediation measures based on identified threats.
• Collaborate with development teams to enforce secure coding practices, guidelines, and standards.
• Integrate security requirements and threat modeling considerations into the software development lifecycle.
• Provide guidance on secure design principles and support security-related discussions and decision-making processes.
• Work closely with development teams to design and implement effective security controls, such as access controls, authentication mechanisms, encryption, and secure communication protocols.
• Utilize threat modeling outputs to guide security control selection and implementation.
• Educate development teams on secure coding practices, common vulnerabilities, and security best practices through training sessions and workshops.
• Analyze security test results, document findings, and provide clear evidence supporting vulnerability closure, risk acceptance, or remediation gaps.

Requirements

• 5+ years of experience in vulnerability management and penetration testing.
• Knowledge of application security principles, threat modeling methodologies, and best practices.
• Proficiency in secure coding practices, vulnerability assessment, and penetration testing methodologies.
• Background in Shell Scripts, Python, or Golang development.
• Familiarity with cloud environments such as AWS, GCP, Azure, and technologies like Kubernetes and Containers.
• Familiarity with common web application vulnerabilities (e.g., OWASP Web/API Top 10) and corresponding mitigation techniques.
• Experience implementing and managing security testing tools, such as static analysis tools, dynamic application scanners, and penetration testing frameworks.
• Understanding of secure software development lifecycle (SDLC) and ability to integrate security practices and threat modeling into agile development processes with SAST and DAST tools (Coverity, CodeQL, SonarQube, Contrast).
• Knowledge of authentication, authorization, and access control mechanisms, cryptographic algorithms, and secure network communication protocols.
• Familiarity with industry standards and frameworks such as ISO 27001, NIST, PCI DSS, and GDPR.
• Excellent communication and collaboration skills, with the ability to effectively communicate technical concepts to non-technical stakeholders.
• MS/M.Tech or BS/B.Tech in Computer Science or related field, or equivalent work experience required.
• English proficiency at B2 level or higher.

Nice to have

• CISSP, CSSLP, CEH, OSCP, OSWE certifications.
• Understanding of cyber security frameworks like OWASP, SANS, NIST, CIS.

We offer

• Top tech minds driving innovation in AI, cloud and digital platform modernization.
• Supportive team and agile, startup-like culture.
• Hybrid-by-design mode and opportunity to work remotely within Poland.
• Chance to work abroad for up to 60 days annually.
• Business-driven relocation opportunities.
• Career development programs.
• Thought leadership, mentoring, soft skills and well-being programs.
• Certification opportunities: Anthropic, Gemini, GCP, Azure, AWS.
• English classes.
• Stable pay.
• Participation in the Employee Stock Purchase Plan with a 15% discount.
• Benefits package: health insurance, multisport, shopping vouchers.
• Referral bonuses up to $2,000.
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more.
• Corporate, social and well-being events.

Please note

• Benefits listed above are available to employees only.
• Contractor engagements are available; B2B cooperation terms are agreed individually.
• Only selected candidates will be contacted.