Security Expert (m/w/d) Open Source - Focus on TYPO3 CMS
Primary stack
PHP
Nice to have's
CI/CD
Job description
About the Position
Security Expert (m/w/d) Open Source - Focus on TYPO3 CMS
Location: Düsseldorf, Germany
Employment Type: Full-time or Part-time
Salary: €54,000 - €84,000 per year
Your Responsibilities
- Analyze, assess, and remediate security vulnerabilities in the TYPO3 Core and in extensions
- Contribute to security audits and code reviews with a focus on secure software development
- Develop and implement security best practices for open source projects
- Support the coordination and publication of security advisories
- Collaborate with international developer communities
- Monitor security threats and derive appropriate countermeasures
Your Profile
- Core Skills:
- Several years of experience in IT security, ideally in an open source environment
- Very good knowledge of PHP and experience with TYPO3 CMS (Core or extensions)
- Experience with common security standards (e.g., OWASP Top 10)
- Know-how in topics such as authentication, authorization, encryption, and web security
- Nice to Have:
- Experience with code analysis tools and penetration testing
- Structured and self-directed way of working
- Good English skills (project communication at an international level)
What We Offer
- Collegial working environment, agile work culture, and a first-name culture
- Flat hierarchies and short decision-making processes
- Collaboration with a dedicated international community
- Free choice of your operating system
- Long-term approach and support for like-minded people in the open-source environment
- Strong belief in open-source morality
- Appreciation of new ideas and the opportunity for personal development
- Space for personal and professional development
- Regular attendance at TYPO3 Camps, Developer Days, and external events is happily supported
- Remote-first culture with optional in-person meetups
- Flexible working hours (full-time or part-time possible)
About Us
TYPO3 GmbH creates, supports, and promotes services that enhance and improve the TYPO3 Project ecosystem. Our mission is to enable and strengthen the broader TYPO3 Community. This goal informs everything we do, including partner promotion, professional development, knowledge-sharing, and support services.
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