Network Security Designer (Telecom)

Location: Den Haag, Netherlands

Rate: €100–€125 per hour, excluding VAT

Company

hirify.global operates a complex multi-vendor telecom network environment.

What you will do

• Analyze existing network infrastructures, configurations, traffic flows, dependencies, risks, security challenges, and operational constraints.
• Design scalable IP networking solutions, routing architectures, network segmentation, firewalling, traffic filtering, and secure management controls.
• Develop technical designs, implementation plans, test scenarios, rollback procedures, and requirements for authentication, authorization, logging, monitoring, and device hardening.
• Validate designs and changes in test environments and support production implementations, migrations, and acceptance testing.
• Document technical decisions, risk assessments, and design considerations while delivering knowledge transfer and maintainable solutions.
• Ensure quality, availability, scalability, and security within assigned work packages.

Requirements

• Minimum 5 years of experience in network engineering and/or network design within complex production environments.
• Strong knowledge of IP routing and switching, including BGP, OSPF and/or IS-IS, MPLS, VPNs, IPv4, and IPv6.
• Proven experience in network security design, including segmentation, firewalling, traffic filtering, secure management access, and device hardening.
• Experience designing highly available and resilient network environments.
• Hands-on experience with at least two of Cisco, Juniper, Fortinet, F5, and Nokia.
• Experience with migrations, implementations, validation activities, and acceptance testing.
• Strong analytical skills, a structured approach to complex technical challenges, independence, and ownership of agreed deliverables and outcomes.
• Excellent communication skills and the ability to explain technical decisions clearly to varied stakeholders.
• Professional proficiency in English, written and spoken.
• Experience within a telecom operator or service provider environment is highly desirable.

Nice to have

• Knowledge of network automation and scripting.
• Experience within a telecom operator or service provider environment.

Culture & Benefits

• Freelance assignment in Den Haag, Netherlands.
• Six-month engagement starting as soon as possible.
• All-inclusive hourly rate excluding VAT, between €100 and €125.
• Work takes place in a complex multi-vendor telecom environment with collaboration across varied stakeholders.
• Only Preferred Suppliers may submit candidates; non-PSL agencies are not permitted to submit candidates or claim candidate ownership or representation rights.