Senior Cyber Security & Network Analyst

  • Sivara GmbH
  • Moorend, Yorkshire
  • 21/06/2026
Full time Information Technology Telecommunications

Job Description

Salary: £70,000 - 70,000 per year

Requirements
  • We require 5-7 years of dedicated experience implementing, supporting, and developing complex Layer 2 and Layer 3 network architectures.
  • We require proven experience leading and performing new network installations and physical and logical kit builds.
  • We require deep technical proficiency configuring and supporting Cisco Nexus switching frameworks and Aruba Wi Fi environments.
  • We require solid understanding of network load balancing mechanisms and coordination of third party penetration testing.
  • We require strong secondary expertise in cyber security, including administering Palo Alto firewalls and their next generation service suites.
  • We require experience using Qualys Vulnerability Management tools and endpoint detection and remediation software.
  • We highly value experience working within SOX compliance frameworks and fast paced data environments.
  • We expect candidates to provide project examples demonstrating hands on leadership in network or security kit deployments.
  • We look for evidence of the scope of hardware and software deployments personally executed.
  • We look for examples of technical challenges overcome during installation or build phases.
  • We look for examples of tangible security, performance, and business improvements delivered through technical decisions.
Responsibilities
  • We lead the configuration, assembly, installation, and deployment of new network and security hardware.
  • We maintain detailed and accurate engineering documentation.
  • We own, optimise, and scale our Layer 2 and Layer 3 network environment.
  • We manage Cisco Nexus routing, LAN and WAN frameworks, wireless networks, B2B links, and network load balancing solutions.
  • We spearhead mid to large scale infrastructure initiatives from inception through completion.
  • We ensure deliverables are met on time and within budget.
  • We demonstrate the business value of our technical decisions across deployments.
  • We oversee next generation Palo Alto firewalls, intrusion prevention systems, and data encryption protocols.
  • We monitor SIEM platforms and threat feeds to identify, investigate, isolate, and remediate vulnerabilities.
  • We partner with internal technical teams and coordinate with external vendor partners.
  • We coach and advise team members to support continuous improvement.
Technologies
  • Aruba
  • Cisco
  • Hardware
  • Support
  • LAN
  • Load Balancing
  • Network
  • Nexus
  • Security
  • Excel

We are seeking a senior, hands on Cyber Security and Network Analyst to serve as a technical anchor within our operations team. This is a high impact role focused on building, securing, and optimising resilient infrastructure that supports our evolving business objectives. We offer structured progression, tailored 1:1 mentorship, consistent coaching, strong autonomy, and a collaborative environment where you will have ownership of meaningful outcomes and the support needed to grow your architectural capabilities.