Senior Juniper Network Engineer - MX/EX/SRX, 24/7 On-Call

Sharp Brains Solutions; Amsterdam; On-site; Full time

Job description

We are looking for a highly skilled and experienced Juniper Network Expert to join a fast-paced enterprise/service provider environment. If you have deep hands‑on expertise with Juniper technologies, strong troubleshooting abilities, and experience managing complex large-scale networks, this opportunity could be a great fit.

Shift: May include 24/7 or rotational support depending on project requirements

Responsibilities

• Design, configure, and support enterprise & service provider network infrastructure
• Manage Juniper MX, EX, and SRX platforms
• Configure and troubleshoot BGP, OSPF, IS-IS, MPLS, VPNs, and WAN connectivity
• Implement Layer 2 / Layer 3 networking including VLANs, STP, and routing integration
• Configure firewall policies, NAT rules, and security controls on Juniper SRX
• Monitor network performance, availability, and capacity
• Troubleshoot complex network incidents, outages, and performance issues
• Perform network upgrades, patching, and configuration management
• Collaborate with IT, security, cloud, and infrastructure teams
• Maintain technical documentation, diagrams, and operational procedures

Qualifications

• Strong expertise in Juniper Junos OS
• Hands‑on experience with MX, EX, and SRX series
• Strong knowledge of BGP, OSPF, IS-IS, MPLS
• Experience with IPSec, SSL VPN, GRE, and WAN technologies
• Deep understanding of network security & firewall administration
• Experience with enterprise network monitoring and troubleshooting tools

  Preferred Certifications

  • JNCIS (Enterprise / Security)
  • JNCIP (Enterprise / Service Provider)
  • CCNA / CCNP (Cisco knowledge is a plus)

  Nice to Have

  A proactive network professional with strong analytical and troubleshooting skills who can manage mission‑critical infrastructure in enterprise or telecom environments.