Senior Network Operations Engineer (NSO)

We are looking for a Senior Network Operations Engineer to join an operational team within a highly critical enterprise environment. This role is ideal for professionals with strong hands-on experience in network operations and troubleshooting, who are comfortable working in complex, large-scale, and technologically diverse infrastructures.

Your Responsibilities:

• Monitor and operate a large-scale enterprise network distributed across multiple sites
• Provide 2nd line technical support and contribute to Network Service Operations (NSO) activities
• Support network installations and migrations (WLAN, LAN, WAN)
• Execute configuration changes (proactively after approval or upon request)
• Apply patches and vendor-recommended fixes
• Troubleshoot and resolve incidents identified through monitoring and management platforms
• Perform advanced troubleshooting in complex network environments
• Collaborate with internal teams and stakeholders to ensure service continuity and performance

• Minimum of 5 years of experience in enterprise networking
• Proven experience in network operations, support, and troubleshooting within critical environments
• Strong knowledge of:
  • IP networking (IPv4 and IPv6)
  • DNS – Domain Name System
  • IP Security Protocol
  • Data Networks and Next Generation Networks (NGN)
• Familiarity with network monitoring and management tools
• Hands-on experience in multi-site and distributed infrastructures
• Strong analytical and problem-solving skills
• High level of autonomy and accountability in daily operations
• Ability to manage priorities in demanding environments
• Clear communication and customer-oriented mindset
• Team-oriented with a collaborative approach

• Workplace type: Hybrid (max. of 3 times per week in the office).
• Location: Picoas, Lisboa.