Network Security Specialist – L2

Global Relay; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A prominent technology firm in Greater London seeks a Network Security Specialist to engineer and deploy network strategies. This role requires extensive collaboration with IT Operations to ensure high availability and security of the IT infrastructure. Ideal candidates will have over 5 years of experience, a strong background in network architecture, and proficiency in scripting and automation. The firm offers a dynamic workspace focused on diversity and opportunity, making it a perfect environment for career development.

Qualifications

• 5+ years of experience in a Network Specialist role.
• Experience with complex enterprise network architecture.
• Strong knowledge in deploying and managing Linux environments.

Responsibilities

• Develop long-term strategies for IT Network.
• Troubleshoot and diagnose system-related issues.
• Create technical documentation including runbooks and user guides.

Skills

Network architecture planning

Troubleshooting complex problems

Linux administration

Network configuration (Aruba, HPE, Cisco)

Automation and scripting

Knowledge of network protocols

Collaboration and teamwork

Tools

OpenStack

OpenShift

JIRA

Confluence

Jenkins

Job description

Who we are

For over 25 years, GlobalRelay has set the standard in enterprise information archiving with industry-leading cloud archiving, surveillance, eDiscovery, and analytics solutions. We securely capture and preserve the communications data of the world’s most highly regulated firms, giving them greater visibility and control over their information and ensuring compliance with stringent regulations.

Though we offer competitive compensation and benefits and all the other perks one would expect from an established company, we are not your typical technology company. GlobalRelay is a career‑building company—an environment for big ideas, new challenges, groundbreaking innovation, and a place where you can genuinely make an impact and be recognized for it.

We believe great businesses thrive on diversity, inclusion, and the contributions of all employees. To that end, we recruit candidates from different backgrounds and foster a work environment that encourages collaboration and learning, completely free of barriers.

Your role

The Network Security Specialist – L2 is responsible for engineering and deploying long‑term network strategies, planning, integration, and deployments within the IT Network. They work closely with the IT Operations team to design, evolve, build, and manage highly available systems and applications, ensuring the integration, manageability, and security of GlobalRelay’s IT infrastructure.

Your responsibilities

• Participate in the development and engineering of long‑term strategies for the IT Network.
• Utilize ‘Systems Thinking’ to understand interdependencies within the IT Network, infrastructure, and globally across GlobalRelay’s interests.
• Work closely with Operations and Development teams to identify, troubleshoot, diagnose, and correct system‑related issues as they arise.
• Participate in formulating and implementing innovative techniques for achieving and maintaining a high level of client satisfaction in conjunction with organizational effectiveness.
• Collaborate with Operations and Development teams to identify opportunities for improved service, efficiency, security, and resiliency.
• Participate in strategic planning initiatives and in the selection, installation, operationalizing, and ongoing support of infrastructure enhancements.
• Participate in and support change‑management activities.
• Provide support to business users and key stakeholders as needed.
• Participate in the creation of documentation including runbooks, how‑to user guides, technical support guides, and Methods of Procedures (MoP).
• Support and evolve monitoring and review of system dashboards and critical alerts to ensure issues are identified, escalated, and addressed promptly.
• Identify, evaluate, and recommend opportunities for automation implementation.
• Provide support for all system administration, escalated incidents, and problem‑related items.
• Utilize acquired knowledge to balance user requirements, available resources, organizational goals, and objectives while maintaining top‑quality client service.

About you

• Minimum of 5+ years’ experience in a Network Specialist capacity.
• Experience with complex enterprise network architecture planning, design, and implementation.
• Experience with troubleshooting and resolving complex technical problems, management reporting, and documentation (how‑to, processes, procedures, MoP).
• Proven ability to self‑manage and balance assigned work to meet deliverables on schedule.
• Solid knowledge and experience in deploying and managing Linux.
• Experience in network configuration of Aruba, HPE, Arista, or Cisco (considered an asset).
• Experience in VOIP and UC technologies such as Cisco UC.
• Experience with Aruba wireless systems and ClearPass.
• Experience in automation and scripting.
• Experience provisioning, maintaining, and supporting enterprise networks, firewalls, and related dependencies.
• Experience with OpenSource software and/or service‑management tools and applications (OpenStack, OpenShift, Zabbix, JIRA, Confluence, Jenkins, etc.).
• Experience with implementing and leveraging automation in system‑administration responsibilities.
• Solid knowledge of network protocols including TCP/IP, UDP, HTTP, FTP, ARP, ICMP, MPLS, BGP, EVPN, VXLAN, etc.
• Demonstrated ability to work both collaboratively in a team environment and independently in an effective, organized manner in a complex, challenging environment.
• Adaptability to work with multiple teams on projects with varying degrees of flexibility and rigidity at different points in the development cycle.
• Solid experience working in formally structured IT operational processes, such as ticket management, incident management, change management, and problem management.
• Ability to take on internal operational initiatives as the owner and coordinator for projects or large‑scale items.
• ITSM framework certifications such as ITIL, Sigma, SIAM or methodology certifications such as Agile, Scrum, DevOps are considered a definite asset.

What you can expect

At GlobalRelay, there’s no ceiling to what you can achieve. It’s a land of opportunity for the energetic, intelligent, and driven. You’ll receive the mentorship, coaching, and support you need to reach your career goals. You’ll be part of a culture that breeds creativity and rewards perseverance and hard work, and you’ll work alongside smart, talented individuals from diverse backgrounds.

GlobalRelay is an equal‑opportunity employer committed to diversity, equity, and inclusion. We seek to ensure reasonable adjustments, accommodations, and personal time are tailored to meet the unique needs of every individual.

Seniority level

• Mid‑Senior level

Employment type

• Full‑time

Job function

• Information Technology

Industries

• Technology, Information and Internet