Ref: 71807

Job title: L3 Network engineer - Location: Barcelona

Preferred experience: Minimum of 8 years of experience in network engineering, with a focus on enterprise or service provider environments.

Proven experience in designing, deploying, and maintaining complex network infrastructures.

Experience with network troubleshooting at the advanced level, including root cause analysis.

Familiarity with network security protocols and best practices.

Prior involvement in large-scale projects or migrations is a plus.

Required technical skills: Deep understanding of TCP/IP, BGP, OSPF, EIGRP, and MPLS protocols.

Hands-on experience with Cisco, Palo Alto, Aruba or other enterprise-grade network equipment.

Knowledge of SDN, NFV, and network automation tools (Ansible, Python scripting, etc.).

Experience with network monitoring and management tools (e.g., SolarWinds, PRTG, Nagios, Cisco Catalyst Center - DNAC).

Familiarity with VPN technologies, firewall configurations, and security appliances.

Ability to perform complex troubleshooting and fault isolation.

Our "On call services" expectations for this mission are maximum one week per month Oncall starts from Tuesday morning - 10AM - GMT to next Tuesday - it does include a weekend.

Optional technical skills: Cloud networking (AWS, Azure, GCP).

Knowledge of VoIP and unified communications systems.

Experience with network architecture design and documentation tools.

Knowledge of data center networking and virtualization (VMware, Hyper-V).

Other skills or abilities expected: Strong analytical and problem-solving skills.

Ability to work independently and in a team environment.

Good documentation and reporting skills.

Adaptability to new technologies and continuous learning.

Interpersonal skills: Excellent communication skills, able to explain complex technical issues clearly.

Customer-oriented attitude and ability to work with diverse stakeholders.

Proactive approach and ownership of issues and projects.

Flexibility and resilience under pressure.

Background and experiences: Bachelor’s degree in Computer Science, Telecommunications, or a related field.

Certifications such as Cisco CCNP/CCIE, Palo Alto, or equivalent are preferred.

Experience in a fast-paced operational environment, supporting critical network infrastructure.

Missions description: Provide advanced support, troubleshooting, and optimization of the company's network infrastructure.

Lead network incident resolution and perform root cause analysis.

Support network architecture evolution, security enhancements, and automation initiatives.

Support and maintain the existing network infrastructure at a high level of expertise.

Troubleshoot and resolve complex network issues.

Participate in network design reviews, upgrades, and security implementations.

Automate routine tasks and improve network monitoring processes.

Document configurations, incidents, and resolutions accurately.

Collaborate with cross-functional teams for network projects and upgrades.

Requested deliverables: Weekly status reports and incident summaries.

Detailed root cause analysis reports for major outages.

Network architecture and configuration documentation.

Automation scripts or tools developed.

Final project completion report and handover documentation.

Technical environment: Cisco, Juniper network devices.

Protocols: BGP, OSPF, EIGRP, MPLS, VPNs.

Network management tools: SolarWinds, Nagios, Cisco Catalyst Center, ISE, PRTG)

Scripting: Python, Ansible (optional).

Cloud platforms: AWS, Azure (if applicable).

Operating Systems: Linux, Windows (for management and automation).

L3 Network Engineer / Senior