Network Administrator - Permanent (Marzán)

We’re Hiring: Juniper Network Expert / Senior Network Engineer Enterprise & Service Provider Environment | Integral Projects | Multi-Vendor Networks Location: Greater Madrid Metropolitan Area, Spain 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. Position: Juniper Network Expert / Senior Network Engineer Experience: 5–10+ Years Employment Type: Contract / Freelance / Long-Term Opportunity Work Environment: Enterprise / Telecom / Service Provider Shift: May include 24/7 or rotational support depending on project requirements ️ Key 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 Required Skills: ✅ 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 ✅ Ability to work under pressure in critical production environments Preferred Certifications: JNCIA-Junos JNCIS (Enterprise / Security) JNCIP (Enterprise / Service Provider) CCNA / CCNP (Cisco knowledge is a plus) Nice to Have: ➕ Network Automation (Python / Ansible) ➕ SDN & Cloud Networking (AWS / Azure) ➕ Carrier-grade MPLS network experience ➕ Multi-vendor environment exposure (Cisco, Palo Alto, Fortinet) Postúlate en Kit Empleo: kitempleo.es/empleo/6u1dpp