Senior L3 Network Engineer
Pasiona
- Barcelona, Spain
- Full-time
- Senior Level
- 8+ years
- Bachelor's degree
- Posted
Skills
Required
- network engineering
- Cisco
- Palo
- Alto
- Telecommunications
- routing and switching protocols
- TCP/IP
- BGP
- OSPF
- EIGRP
- MPLS
- security equipment
- Aruba
Preferred
- Software-Defined Networking
- SDN
- NFV
- automation scripting
- Python
- Ansible
- Cloud networking
- AWS
- Azure
- Hyper-V
Provide advanced (Level 3) support, troubleshooting, fault isolation, and optimization for enterprise network infrastructure.
Responsibilities
- 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.
Requirements
- 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.
- 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).
- 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.
- Professional or expert-level certifications such as Cisco CCNP/CCIE, Palo Alto PCNSE, or equivalent.
- Familiarity with VoIP/Unified Communications systems and network architecture design tools.
- Pasiona Consulting es una consultora tecnológica, partner de Microsoft, dedicada al diseño, desarrollo e implementación de aplicaciones de software a medida para clientes de múltiples sectores.
Preferred
- Knowledge of Software-Defined Networking (SDN), NFV, and automation scripting (Python, Ansible).
- Cloud networking experience (AWS, Azure, GCP) and data center virtualization (VMware, Hyper-V).