Network Designer
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About The Role
We are looking for an experienced Network Designer / Architect to join a mission-critical network environment in Brussels. The successful candidate will act as a design authority for a large-scale customer access network, working alongside senior network designers and architects. The role focuses on defining and managing the hardware and software lifecycle of a Juniper- and Cisco-based Hub-and-Spoke network architecture, while ensuring high levels of security, resilience, availability, and operational integrity. Regular on-site presence in Belgium is required to support testing, validation, and implementation activities.
About The Role
We are looking for an experienced Network Designer / Architect to join a mission-critical network environment in Brussels. The successful candidate will act as a design authority for a large-scale customer access network, working alongside senior network designers and architects. The role focuses on defining and managing the hardware and software lifecycle of a Juniper- and Cisco-based Hub-and-Spoke network architecture, while ensuring high levels of security, resilience, availability, and operational integrity. Regular on-site presence in Belgium is required to support testing, validation, and implementation activities.
Key Responsibilities
- Contribute to the evolution of network architecture and technology solutions through strategic evaluation of new technologies, products, and design improvements.
- Define and review network solutions in collaboration with architects, engineering teams, business stakeholders, customers, management, and technology partners.
- Provide senior-level technical guidance throughout solution design and implementation activities.
- Ensure network designs meet technical, operational resilience, and cybersecurity requirements.
- Act as a senior escalation point for complex network and infrastructure incidents.
- Support operational teams with advanced troubleshooting, root-cause analysis, and resolution of critical network issues.
- Work closely with technology vendors and cybersecurity teams to identify and remediate network security vulnerabilities.
- Define and coordinate software upgrades, security patches, configuration improvements, and lifecycle initiatives.
- Participate in cross-functional projects as a Network Subject Matter Expert and contribute to technical design reviews.
- Maintain high-quality technical and network design documentation and stay current with networking and cybersecurity developments. Required Technical Expertise
- Cisco Routing & Switching - senior level
- Juniper SRX - extensive hands-on expertise
- Juniper SD-WAN
- QoS and VPN technologies
- Network Security
- Network architecture and design
- Mission-critical network environments
- Technical and design documentation
- Experience with Ansible, Bitbucket, and network automation is highly valuable
Experience Profile
- 8+ years of relevant experience in network infrastructure, network design, or architecture.
- Strong hands-on background with Cisco and Juniper technologies.
- Extensive experience designing and supporting complex enterprise network environments.
- Proven ability to troubleshoot complex technical issues and provide senior-level technical guidance.
- Experience in environments where security, resilience, availability, and operational stability are critical.
- Ability to communicate effectively with architects, engineers, cybersecurity specialists, vendors, management, and business stakeholders.
- Comfortable operating both at architecture/design level and close to implementation and operational teams.
Location
- Brussels, Belgium
Work mode
- Full-time
- On-site presence: Regular presence in Belgium require
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