Senior L3 Network Engineer

- Provide advanced (Level 3) support, troubleshooting, fault isolation, and optimization for enterprise network infrastructure. - Lead network incident resolution and perform detailed root-cause analysis for major outages. - Maintain, support, and participate in network architecture design reviews, upgrades, and security implementations. - Automate routine network tasks and enhance monitoring processes using scripting and automation tools. - Develop and maintain accurate network configurations, incident reports, and technical architecture documentation. - Participate in an on-call rotation (up to 1 week per month, running Tuesday to Tuesday, including weekends). - Collaborate with cross-functional teams to drive network projects, migrations, and infrastructure enhancements. - Experience: Minimum of 8 years in network engineering within enterprise or service provider environments, including hands-on experience designing, deploying, and maintaining complex network infrastructures. - Education: Bachelor’s degree in Computer Science, Telecommunications, or a related field. - Core Technical Expertise: - Deep knowledge of routing and switching protocols: TCP/IP, BGP, OSPF, EIGRP, and MPLS. - Hands-on experience with enterprise-grade networking and security equipment (Cisco, Palo Alto, Aruba, Juniper). - Strong expertise in VPN technologies, firewall configurations, and network security appliances. - Proficiency with network monitoring and management tools (SolarWinds, PRTG, Nagios, Cisco Catalyst Center / DNAC, Cisco ISE). - Skills & Competencies: - Strong analytical, problem-solving, and advanced fault-isolation capabilities. - Excellent verbal and written communication skills with the ability to explain complex technical issues to diverse stakeholders. - Ability to work independently with strong ownership, adapt to fast-paced environments, and handle pressure effectively. - Certifications: Professional or expert-level certifications such as Cisco CCNP/CCIE, Palo Alto PCNSE, or equivalent. - Automation & Software: Knowledge of Software-Defined Networking (SDN), NFV, and automation scripting (Python, Ansible). - Cloud & Virtualization: Cloud networking experience (AWS, Azure, GCP) and data center virtualization (VMware, Hyper-V). - Additional Systems: Familiarity with VoIP/Unified Communications systems and network architecture design tools. English is a must Barcelona