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Senior L3 Network Engineer

On-site in Barcelona·Full-time·Added yesterday (last checked 4 Nov)

Pasiona

40 open roles

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Our summary

Hours: Rotating shifts · Includes weekends
Work mode: On-site, Barcelona
Contract: Permanent, full-time hours
English: Required
Experience: 8+ years
Education: University degree

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The ad doesn’t mention sponsorship
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Skills

This job advert was originally written in Spanish.

Requirements

What we're looking for

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.

Nice to have

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.

Languages

English is a must

The role

Barcelona

What you'll do

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.

About Pasiona

Pasiona is a technology consulting firm specializing in cybersecurity, cloud infrastructure, and digital transformation. The company operates as a strategic partner for enterprises, offering services that range from vulnerability management and penetration testing to AI-driven platform engineering and data integration. With a global footprint, Pasiona combines deep technical expertise with a strong focus on innovation, helping organizations modernize their IT environments and secure their digital assets.

In Spain, Pasiona has established a significant presence in Barcelona, where it runs its Spanish operations and serves as a hub for international talent. The company is known for its collaborative, engineering-driven culture and actively recruits international professionals, offering opportunities for growth in areas like AI, cloud security, and platform engineering. For international hires, Pasiona provides a multicultural environment and the chance to work on cutting-edge projects, making it an attractive destination for those looking to build a career in Spain's thriving tech sector.

Industry: Tech Consulting
Founded: 2010
Employees: 100–500
Headquarters: Barcelona, Spain
In Spain: Barcelona

Good to know if you are moving

Pasiona is headquartered in Barcelona, so international hires would be joining the company at its global HQ.
The company's working language is English, making it accessible for non-Spanish speakers.
Pasiona offers visa sponsorship and relocation support for international candidates.
The company has a strong focus on professional development and certifications in cybersecurity and cloud technologies.
Barcelona offers a high quality of life, with a strong tech ecosystem and international community.

All open roles at Pasiona