A leading global technology company in Greater London is seeking a Level 3 Network Security Engineer to manage high‑severity incidents. Responsibilities include configuring Cisco devices, providing Level-3 support, and monitoring network performance. Candidates should have 7-8 years of experience in network protocols and troubleshooting skills. The role offers competitive compensation, a supportive team environment, and opportunities for personal growth and involvement in exciting projects. #J-18808-Ljbffr