[Hiring] IT Infrastructure and Security Architect @Nemensis Ag

Role Description

Currently we are looking for an IT Infrastructure and Security Architect (m/f/d) to support an enterprise customer in the defense sector. The role has a strong infrastructure architecture focus, complemented by security-related responsibilities. The architect will support the design and evolution of secure, scalable and resilient enterprise infrastructure environments and act as a senior technical expert across infrastructure and security topics.

Engagement Details

• Seniority: Senior
• Start: ASAP / immediate availability preferred (1.11.2026)
• Duration: Potentially one year or longer
• Location: Remote
• On-site: No regular on-site presence required; potentially approximately twice per year for specific topics
• Languages: German and English
• Industry: Defense
• Willingness to undergo a Sicherheitsüberprüfung (SÜ)

Key Responsibilities

• Design and further develop enterprise IT infrastructure architectures
• Define technical architecture concepts, standards and solution designs for infrastructure environments
• Assess existing infrastructure landscapes and identify technical improvement and modernization opportunities
• Design secure and resilient infrastructure solutions taking security requirements into consideration
• Provide architecture guidance across infrastructure, platform and security-related topics
• Evaluate technical solutions and provide recommendations regarding architecture, integration, scalability, security and operational feasibility
• Support technical decision-making and translate business or technical requirements into appropriate infrastructure solutions
• Collaborate with customer stakeholders, technical specialists, engineering teams and other architects
• Ensure architectural consistency across relevant infrastructure domains
• Review technical concepts and identify architecture, infrastructure and security risks
• Support the implementation and evolution of infrastructure solutions as a senior architecture SME
• Create and maintain architecture documentation, technical concepts and recommendations

Qualifications

• More than 10 years of overall professional IT experience
• At least 5 years of relevant experience in infrastructure architecture or closely related infrastructure roles
• Senior-level experience working with complex enterprise IT environments
• Strong background in IT infrastructure architecture rather than a primarily application or pure cybersecurity profile

Requirements

• Strong knowledge of enterprise IT infrastructure architecture
• Experience designing complex infrastructure solutions and technical architectures
• Good understanding of infrastructure security principles and security-by-design concepts
• Experience with enterprise infrastructure covering several of the following areas:
  • Compute / server infrastructure
  • Virtualization
  • Cloud and/or hybrid infrastructure
  • Storage
  • Networking
  • Identity and access concepts
  • Backup and disaster recovery
  • High availability and resilience
  • Infrastructure monitoring and operations
• Ability to assess existing IT landscapes and develop target architecture concepts
• Ability to produce architecture documentation and communicate technical designs clearly
• Experience working across multiple infrastructure domains and coordinating technical dependencies

Language Requirements

• German: required
• English: required

Preferred / Nice-to-Have Requirements

• Previous experience with customers from defense, public sector, critical infrastructure or other highly regulated environments
• Experience working with demanding enterprise security and compliance requirements
• Relevant architecture, infrastructure, cloud or security certifications
• Experience working in large and complex enterprise organizations
• Existing security clearance / Sicherheitsüberprüfung (SÜ) is an advantage but not mandatory

Please only submit CVs with a genuine senior infrastructure architecture background. Profiles primarily focused on cybersecurity, administration, operations, development or project management without substantial infrastructure architecture experience should not be submitted.