Network Administrator

Appello UK

Network Administrator responsible for diagnosis and resolution of faults ensuring service quality. Support mission-critical operations within hybrid working arrangements for Appello groups.

Posted 7/18/2026full-timeNew Milton • 🇬🇧 United KingdomMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Network Administration with a strong focus on troubleshooting IP networks, SIP-based systems, and SaaS platforms. Proficient in maintaining network infrastructure, analyzing service trends, and collaborating with cross-functional teams to drive operational improvements.

Highest-signal resume keywords

Network AdministrationLinux EnvironmentsIP Network TroubleshootingITIL FrameworksCloud Technologies

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

TCP/IPDNSDHCPVLANsFirewall RulesAPI ManagementScripting LanguagesTroubleshootingService Desk CollaborationOperational Improvements

Soft Skills

Methodical ApproachOwnershipCollaboration

Tools & Technologies

WiresharkSIP TracingTECSSmartTECDigital Telecare SystemsAWSAzure

Certifications & Qualifications

CompTIACCNPITIL

Industry Keywords

TelecommunicationsContact CentresMulti-Site OperationsMission-Critical Environments

Tech Stack

Tools & technologies

AWSAzureCloudDNSJavaScriptLinuxPythonTCP/IP

About the role

Key responsibilities & impact

Maintain and secure network infrastructure
Diagnose and resolve faults using a structured, methodical approach
Take full ownership of support tickets from initial investigation through to resolution
Analyze recurring incidents and service trends
Collaborate with service desk teams, system operations, product teams, and third-party suppliers
Support the introduction of new products and services by testing processes, identifying risks, and driving operational improvements
Create and update documentation, knowledge base articles, and troubleshooting guides

Requirements

What you’ll need

3–5 years’ experience in a Network Administration or similar technical support role
Strong knowledge of Linux environments and familiarity with API management tools
Hands-on experience troubleshooting IP networks, SIP-based systems, and SaaS platforms
Experience supporting mission-critical environments (e.g. telecommunications, contact centres, or multi-site operations)
Understanding of networking fundamentals including TCP/IP, DNS, DHCP, VLANs, and firewall rules
Ideally experienced with TECS, SmartTEC, or digital telecare systems and tools like Wireshark or SIP tracing
Familiar with ITIL frameworks and best practices, with relevant certifications (e.g. CompTIA, CCNP, ITIL)
Exposure to cloud technologies (AWS/Azure) and scripting languages such as JavaScript or Python is advantageous

Benefits

Comp & perks

161 hours holiday plus bank holidays
Discounts on groceries and shopping
24/7 employee assistance programme
Family and friends’ discounts on services & products
Pension Scheme, up to 4% Company matched
Free on-site parking