At K-LAGAN, we are looking for aSenior L3 Network Engineerto 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 maximum1 week per month(rotation from Tuesday 10:00 AM GMT to the following Tuesday, including the weekend).Requirements & Core CompetenciesExperience & 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-LAGANPermanent contractfrom 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.#J-18808-Ljbffr

📌 Network Engineer (Madrid)
🏢 K-Lagan
📍 Madrid