Network Engineer

Barcelona Technical Center; l'Hospitalet de Llobregat; Presencial; EUR 60.000 - 90.000; Jornada completa

Descripción de la vacante

Barcelona Technical Center in Spain seeks a Senior Network Engineer to design, manage, and evolve our multi-site network infrastructure across locations. You will lead deployments, optimize LAN/WAN, implement SD-WAN, security, and VPNs, and mentor junior staff.

The role requires 5–8 years of hands-on experience with Cisco/Juniper/Aruba/FortiNet, proficiency in QoS, BGP/OSPF, and strong vendor coordination. English required; additional languages are a plus.

Formación

• 5–8 years of hands-on network infrastructure experience.
• Experience with multi-site or data center environments.
• Hands-on with SD-WAN, VoIP, QoS, and network virtualization.
• Proficiency with Cisco/Juniper/HP-Aruba/FortiNet/Palo Alto hardware.
• CCNP/CCIE/JNCIP/NSE or equivalent certifications a plus.

Responsabilidades

• Design and optimize LAN, WAN, WLAN, VPN, and SD-WAN infrastructures.
• Drive scalability, redundancy, and high availability across sites.
• Configure routers, switches, firewalls, load balancers, and APs.
• Monitor performance with Nagios, PRTG, or SolarWinds.
• Manage QoS, VLANs, IP addressing, and routing protocols.
• Implement firewall policies, VPNs, and Zero Trust segmentation.
• Conduct vulnerability assessments and participate in pentesting.
• Maintain network diagrams and accurate configurations.
• Automate tasks with Ansible and Python; version control configs.
• Collaborate with systems, cloud, and cybersecurity teams; vendor liaison.

Conocimientos

Network design

LAN/WAN optimization

SD-WAN

VPN

Routing protocols (OSPF, BGP, EIGRP)

Security policy & Zero Trust

Vendor management

Team leadership

Documentation

English communication

Herramientas

Ansible

Python

Nagios

PRTG

SolarWinds

Cisco

Juniper

Aruba

Fortinet

Palo Alto

Descripción del empleo

Are you a seasoned network professional ready to lead infrastructure projects that make a real impact? We're looking for a Senior Network Engineer to join our team and take ownership of designing, managing, and evolving our network infrastructure across multiple sites.

What You'll Do

• Design and optimize LAN, WAN, WLAN, VPN, and SD-WAN infrastructures
• Drive scalability, redundancy, and high availability across environments
• Evaluate and recommend cutting-edge technologies from Cisco, Juniper, Aruba, and Fortinet
• Configure and manage routers, switches, firewalls, load balancers, and access points
• Monitor performance using tools like Nagios, PRTG, or SolarWinds
• Manage QoS policies, VLANs, IP addressing, and routing protocols (OSPF, BGP, EIGRP)
• Implement firewall policies, VPNs, and Zero Trust segmentation
• Conduct vulnerability assessments and contribute to penetration testing
• Keep security configurations aligned with current best practices (IDS/IPS, access control)
• Diagnose and resolve complex Level 2/3 network incidents
• Maintain thorough network diagrams, configurations, and documentation
• Automate repetitive tasks using Ansible, Python, or custom scripting
• Manage configuration backups and version control for network equipment
• Work cross-functionally with systems, cloud, and cybersecurity teams
• Lead network deployments, data center migrations, and branch rollouts
• Manage vendors and external service providers

What We're Looking For

5–8 years of experience in network infrastructure, including multi-site or data center environments

Hands-on experience with SD-WAN, VoIP, QoS, and network virtualization (VLAN, VXLAN)

Proficiency with hardware from Cisco, Juniper, HP/Aruba, Fortinet, or Palo Alto

Proven leadership in multidisciplinary technical teams under high-pressure conditions

Strong vendor management and coordination skills

Relevant certifications a plus: CCNP, CCIE, JNCIP, NSE, or equivalent

English proficiency required (B2 minimum) — working language for technical documentation, international team communication, and vendor management

Knowledge of additional languages (Spanish, German, or French) is a plus

Why Join Us?

Work on complex, high-impact infrastructure projects

Collaborate with international, cross-functional teams

Real ownership and visibility in your role