PKI & Certificate Management Engineer (m/f/d)

Welcome to the IT Security team at Fresenius Digital Technology! We are responsible for the implementation, management and operation of programs, projects and services for a wide range of different security capabilities in various business segments within the Fresenius Group.

We are looking for a highly motivated team member who will be responsible for the design, implementation, operation, and continuous improvement of Public Key Infrastructure (PKI) and certificate lifecycle management services. In your new role you will focus on ensuring the security, availability, and automation of digital certificates and cryptographic services across on\-premises and cloud environments.

You can look forward to a working environment that is as challenging as it is attractive. One that fits the ideal of a top workplace in so many respects \- while expanding our own expert skills bank.

Your responsibilities:
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• Design, implement, and maintain enterprise PKI and certificate management solutions


• Administer certificate lifecycle management platforms (e.g., Venafi, Keyfactor, DigiCert, AppViewX, or similar solutions)


• Automate certificate issuance, renewal, revocation, and inventory processes


• Manage internal and external Certificate Authorities (CAs)


• Support secure key management and cryptographic best practices


• Integrate certificate management services with cloud, infrastructure, application, and DevOps platforms


• Monitor certificate health, expiration risks, and compliance requirements


• Troubleshoot and resolve certificate, encryption, and trust\-related issues


• Develop and maintain operational procedures, standards, and documentation


• Collaborate with security, infrastructure, cloud, and application teams to implement scalable machine identity solutions


• Support audits, regulatory requirements, and security compliance initiatives

• Bachelor’s or master’s degree in computer science, Information Technology, Engineering, or comparable qualification


• Strong expertise in PKI, certificate management, cybersecurity, or related infrastructure security domains


• Strong hands\-on experience with certificate lifecycle management solutions and PKI technologies


• Deep Knowledge of X.509 certificates, TLS/SSL, cryptographic protocols, and key management concepts


• Experience with automation and scripting technologies


• Familiarity with cloud platforms, enterprise infrastructure, and DevOps environments


• Strong analytical, troubleshooting, and problem\-solving skills


• Fluent English skills required; German skills are an advantage

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