Senior Network Engineer

Location: 100% remote

Rate: up tp 168 pln/h net+vat

Type of contract: B2B

Summary: The main function of the Senior Network Engineer is to lead troubleshooting and maintenance of complex network infrastructures within an organization that values innovation and inclusivity. This role is vital for supporting project success by ensuring robust network connectivity and security while adhering to defined service level agreements (SLAs).

Responsibilities:

• Lead complex troubleshooting for LAN, WAN, VPN, firewall, and wireless issues, working to defined SLAs.

• Support configuration and maintenance of Cisco and other enterprise-grade network devices.

• Deliver standard and emergency network changes as part of scheduled or incident response activities.

• Conduct firewall rule reviews, NAT policy adjustments, and IDS/IPS tuning for proactive/reactive tasks.

• Respond to security-related alerts and requests from the SOC, including traffic and policy investigations.

• Monitor network performance using tools such as LogicMonitor and PRTG and respond to alerts.

• Update ServiceNow records with precise, technical data for all incidents, problems, and changes.

• Maintain and improve network documentation in collaboration with the CMDB team.

• Mentor junior colleagues by sharing experience and guiding troubleshooting approaches.

• Contribute to continual service improvement initiatives related to monitoring, tooling, or standardisation.

Key Requirements:

• Knowledge of AWS or Azure cloud platforms.

• Deep hands-on experience with routing and switching technologies, ideally recent CCNP or equivalent.

• Strong practical knowledge of firewalls, including Cisco ASA, Palo Alto, or equivalent.

• Familiarity with wireless technologies and secure access control (e.g., Cisco ISE).

• Experience with monitoring platforms (e.g., LogicMonitor, PRTG) and interpreting performance data.

• Strong understanding of network security principles including segmentation, encryption, and access control.

• Clear understanding of ITIL processes including Incident, Problem, and Change Management.

• Excellent analytical and communication skills.

• Eligibility for UK Government Security Check (SC) clearance.

Nice to Have:

• Exposure to SD-WAN solutions or cloud-network integration.

• Experience with content switching or load balancing (e.g., F5, Kemp, Citrix NetScaler).

• Familiarity with network scripting/automation (e.g., Python, Ansible).

• Understanding of ISO27001 controls and how they apply to networks.

• Experience supporting security incident response or integrating with SIEM platforms.