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Build and scale the IT backbone at zerothird.com

At zerothird (zerothird.com), we’re building the future of secure communications. As a fast-scaling quantum technology company, we specialize in entanglement-based Quantum Key Distribution (eQKD), the most advanced, physically unbreakable encryption method available today. Based on Nobel-Prize winning research, our systems enable critical infrastructure, telecom providers, and enterprise customers to protect their networks against both today’s threats and tomorrow’s quantum attacks.

Key Responsibilities

  • Responsible for managing and maintaining security-critical IT infrastructure across multiple countries.
  • A reliable, scalable hybrid IT environment (on-premise infrastructure combined with cloud services where it makes sense)
  • Stable and well-maintained on-prem systems, networks, and workplace infrastructure
  • Clear and enforceable IT processes, standards, and documentation
  • Efficient IT service delivery and user support across the organization
  • Prioritization and workload management in a resource-constrained environment
  • IT budget ownership (planning, cost control, vendor and supplier management)
  • Leading a small internal team and coordinating external IT service providers
  • Defining and executing a pragmatic IT roadmap aligned with operational needs and company growth
  • Ensuring operational stability, system performance, and continuous improvement across all IT domains

Core Responsibilities

  • Leadership & Team Development
  • Operational IT Ownership (hands-on where needed)
  • IT Governance & Process Implementation
  • Service Delivery & Support Oversight
  • Infrastructure & Workplace Management
  • Stakeholder Communication & Alignment
  • Translation of business needs into effective IT solutions

Your Profile

  • Proven experience leading a small IT or infrastructure team
  • Experience managing IT budgets and external vendors
  • Strong understanding of IT operations and service management (ITIL-aligned)
  • Solid experience with Microsoft 365, identity, and endpoint management (incl. Apple environments)
  • Experience managing incidents and driving improvements
  • Good understanding of networking fundamentals (VPN, routing, segmentation basics)
  • Solid Linux administration knowledge (operations, patching, maintenance)
  • Comfortable working in hybrid (on-prem + cloud) environments
  • Strong prioritization skills and pragmatic communication style

Nice to have 

  • Automation mindset (PowerShell, Bash)
  • Configuration management (e.g. Ansible, Puppet)
  • Experience with cloud infrastructure providers
  • Familiarity with containerized environments (e.g. Docker)
  • Experience scaling IT in a growing company

What We Offer

  • The opportunity to build and shape IT from the ground up
  • Direct exposure to management and real decision-making impact
  • High level of ownership and autonomy
  • A pragmatic, engineering-driven work environment
  • Competitive compensation (depending on experience)
  • Flexible work setup with hybrid options
  • A collaborative, no-nonsense team culture

About us

At zerothird.com, we value substance over titles and focus on building systems that work reliably and at scale.


If you enjoy taking ownership, building structure where needed, and enabling teams through solid IT foundations, we’d like to hear from you. The minimum gross salary for this position is €3.284,86 per month (based on full-time employment) in accordance with the collective agreement. However, there is a willingness to offer a higher salary depending on experience and qualifications.

We look forward to receiving your application!