Senior Network Engineer L3 – Cisco & Enterprise Networks | Barcelona

📢 Business Insights is a Software Engineering company specialized in custom software development, with its own AI product and a strong focus on Talent Tech.

We are currently experiencing a period of growth and are looking for a Senior Network Engineer L3 to join an international technology project focused on enterprise networking, infrastructure reliability and network security.

We would love you to become part of our software engineering team, where you will have the opportunity to grow professionally, collaborate with talented people and work on innovative technology projects.

You will also have the opportunity to work with leading organizations across different industries, strengthening your technical expertise and contributing to modern, scalable solutions.

🔎 What will be your mission?

You will be responsible for maintaining, troubleshooting and optimizing complex enterprise network infrastructures, ensuring high availability, performance and security.

You will act as a Level 3 technical expert, resolving critical incidents, performing root cause analysis and supporting network architecture improvements.

🎯 What will you do?

• Provide L3 support for complex network incidents and infrastructure issues.

• Troubleshoot and optimize enterprise networks using Cisco, Juniper and other networking technologies.

• Manage and troubleshoot routing protocols including BGP, OSPF, EIGRP and MPLS.

• Perform Root Cause Analysis (RCA) for critical incidents.

• Support network upgrades, migrations, architecture improvements and security implementations.

• Manage network monitoring tools and improve operational visibility.

• Automate routine networking tasks and maintain technical documentation.

• Collaborate with international technical teams on infrastructure projects.

👉 To succeed in this role, it is important to have

• 8+ years of experience in Network Engineering, preferably in enterprise or service provider environments.

• Advanced knowledge of TCP/IP, BGP, OSPF, EIGRP and MPLS.

• Hands-on experience with Cisco and/or Juniper network equipment.

• Experience with firewalls, VPNs and network security technologies.

• Advanced L3 troubleshooting, fault isolation and root cause analysis skills.

• Experience with network monitoring tools such as SolarWinds, PRTG, Nagios or Cisco Catalyst Center (DNAC).

• Knowledge of network automation, SDN/NFV and scripting concepts.

• Experience supporting critical network infrastructures.

• Strong communication, problem-solving and stakeholder management skills.

• Degree in Computer Science, Telecommunications or equivalent experience.

Valued:

• Cisco CCNP/CCIE, Palo Alto or equivalent certifications.

• Experience with Python and Ansible for network automation.

• Knowledge of Cisco ISE, Aruba and Palo Alto technologies.

• Experience with Cloud Networking (AWS, Azure or GCP).

• Knowledge of Data Center Networking, VMware or Hyper-V.

• Experience with VoIP and Unified Communications.

• Previous involvement in large-scale network migrations.

🏆 What can you expect from being part of our team?

• Work on stable and challenging technology projects that support your professional growth.

• Location: Barcelona.

• Hybrid

• International and collaborative working environment.

• Competitive salary.

• Flexible working hours.

• Intensive working hours during summer.

• Opportunities for continuous learning and professional development.

• On-call rotation: Maximum one week per month, from Tuesday at 10:00 AM GMT to the following Tuesday, including the weekend.

• Availability for business travel is required.

And… plenty of motivation to keep learning!

🚀 If this opportunity sounds interesting, apply now and let's get to know each other!