L3 Network Engineer

K-LAGAN; Barcelona; Híbrido; EUR 43.000 - 53.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Permanent contract

Private health insurance

Team building activities

Ongoing training

Company events

Birthday off

Descripción de la vacante

K-LAGAN in Barcelona is seeking a Senior L3 Network Engineer to join our team. You will drive advanced network operations, troubleshoot complex infrastructures, and contribute to network evolution and security.

The role requires 8+ years in enterprise networking, hands‑on experience with Cisco/Palo Alto/Aruba/Juniper, and strong skills in monitoring, automation with Python and Ansible, and network design. This is a hybrid, Barcelona‑based position offering long‑term stability and a competitive

Formación

• Minimum 8 years in network engineering in enterprise or service provider environments.
• Deep mastery of TCP/IP, BGP, OSPF, EIGRP, and MPLS.
• Hands-on experience with Cisco, Palo Alto, Aruba, or Juniper enterprise devices.
• Strong familiarity with VPN technologies and firewall configurations.
• Experience with network monitoring tools: Cisco Catalyst Center/DNAC, ISE, SolarWinds, Nagios, PRTG.
• Knowledge of SDN, NFV, and automation/scripting (Python, Ansible) on Linux/Windows.
• English at C1 level for fluent collaboration.
• Location: Based in Barcelona or relocating to Barcelona.

Responsabilidades

• Provide L3 support, lead incident resolution, and perform root cause analysis for major outages.
• Maintain high-level stability for core infrastructure and participate in design reviews.
• Implement security protocols and optimize network flows; configure firewalls and VPNs.
• Automate routine tasks and network monitoring using Python and Ansible.
• Deliver network diagrams, configuration docs, status reports, and incident summaries.
• On-call availability maximum 1 week per month (rotation schedule).

Conocimientos

8+ years experience

Network design

Troubleshooting

Python scripting

Ansible automation

English communication (C1)

Herramientas

Cisco Catalyst Center

DNAC

ISE

SolarWinds

Nagios

PRTG

VMware

Descripción del empleo

At K-LAGAN, we are looking for a Senior L3 Network Engineer to join our team in Barcelona. You will be responsible for providing advanced support, troubleshooting, and optimizing complex enterprise-grade network infrastructures, while actively contributing to network evolution, security enhancements, and automation initiatives.

• Advanced Network Operations & Troubleshooting: Provide L3 support, lead incident resolution, perform root cause analysis (RCA) for major outages, and perform complex fault isolation across enterprise network environments.
• Architecture & Infrastructure Maintenance: Maintain high-level stability for core infrastructure, participate in design reviews, execute network upgrades, and support architecture evolution.
• Security & Optimization: Implement security protocols, optimize existing network flows, configure firewalls/VPNs, and maintain network management systems (Cisco Catalyst Center, ISE, SolarWinds, PRTG, Nagios).
• Automation & Continuous Improvement: Automate routine tasks and network monitoring processes using Python and Ansible.
• Documentation & Technical Reporting: Deliver detailed network architecture diagrams, configuration docs, status reports, and incident summaries.
• On-Call Services: On-call availability maximum 1 week per month (rotation from Tuesday 10:00 AM GMT to the following Tuesday, including the weekend).

Requirements & Core Competencies

Experience & Key Technical Skills:

• Experience: Minimum of 8 years in network engineering (enterprise or service provider environments) with a solid track record in designing, deploying, and maintaining complex infrastructure.
• Protocols & Networking: Deep mastery of TCP/IP, BGP, OSPF, EIGRP, and MPLS.
• Hardware & Vendors: Direct hands‑on experience with Cisco, Palo Alto, Aruba, or Juniper enterprise‑grade equipment.
• Security & Remote Access: Strong familiarity with VPN technologies, firewall configurations, and security appliances.
• Monitoring & Management: Expertise in network monitoring tools (Cisco Catalyst Center / DNAC, ISE, SolarWinds, Nagios, PRTG).
• Automation & Systems: Knowledge of SDN, NFV, and automation/scripting tools (Python, Ansible) on Linux/Windows environments.
• Languages: C1 English level (written and spoken) is required for fluent collaboration.
• Location: Based in Barcelona or currently relocating to Barcelona.

Nice to Have (Plus):

• Cloud networking experience (AWS, Azure, GCP).
• VoIP and Unified Communications knowledge.
• Data center networking and virtualization (VMware, Hyper-V).
• Official certifications: Cisco CCNP/CCIE, Palo Alto, or equivalent.

Interpersonal Skills:

• Strong analytical mind, problem‑solving drive, and technical ownership.
• Clear communication skills with the ability to convey complex technical issues to diverse stakeholders.
• Adaptability, proactivity, and resilience in fast‑paced operational environments.
• Location: Barcelona (Hybrid: maximum 2 days per week on‑site, subject to review).
• Workday: Full‑time.
• Salary Range: Around €48,000 gross/year (commensurate with experience).
• Project: Long‑term, stable mission supporting critical enterprise network infrastructure.

K-LAGAN Benefits & Life at K-LAGAN

• Permanent contract from day one, private health insurance, and long‑term project stability.
• Team Building: Barbecues, tech meetups, and team events to keep us connected.
• Continuous Follow‑up: Periodic 1‑on‑1 meetings with your Business Manager (BM) to boost your career growth and share feedback.
• Learning & Development: Access to ongoing training in tech skills, soft skills, and languages.
• Special Events: Summer party, Christmas dinner, and Solidarity Day.
• Birthday Off: Enjoy your birthday free-however, wherever, and with whomever you choose!

At K-LAGAN, we believe in people and projects with real impact. We foster an inclusive environment where engineering, technology, and talent join forces, promoting equal opportunity and continuous personal and professional development.