About this role
Salary: £49,000 - 89,000 per year
Requirements: We require 5+ years of hands-on experience in operational and lifecycle management within a large Internet Service Provider or equivalent network, specifically across DNS, IPAM, DHCP, RADIUS (AAA), and LDAP.We need strong knowledge of DNS security, DNSSEC, DDoS mitigation, caching architectures, and resolver performance tuning.We require deep understanding of RADIUS Authentication, Authorization, and Accounting (AAA), including RADIUS attributes.We need experience in Linux system administration and strong scripting skills in Bash and Python for automation, tooling, and diagnostics.We require strong expertise in network monitoring platforms and fault diagnostic methodologies, with proven analytical capability to resolve complex issues in service-critical environments.We value the ability to think critically, ask difficult questions, and consider the broader implications while managing detailed work.We need a high degree of flexibility and the ability to manage multiple tasks within tight deadlines.A university degree in engineering, telecommunications, computer science, or a related technology field is preferred, or equivalent industry experience.Hands-on experience with BIND, Unbound, PowerDNS, Akamai, Infoblox, Radiator, or equivalent is desired.Passion for new technologies and developments in the telecom industry is desired. Responsibilities: We operationally maintain DNS and RADIUS solutions based on FreeRADIUS, 389 LDAP Directory replication, AnswerX, Unbound, CacheServe, BIND, and other vendor platforms.We lead complex and major incidents, driving proactive operational improvements through post-incident reviews and root cause analysis.We apply structured testing methodologies to validate new features, upgrades, and deployments in production and live environments.We identify and deliver automation opportunities for operational and lifecycle management using scripting, applications, or in-house tools.We act as technical lead for new projects and demands impacting DNS or RADIUS, reviewing Low-Level Designs, High-Level Designs, and operational guides to ensure alignment with operations.We collaborate with cross-functional teams to ensure seamless improvements and network growth.We support development and knowledge transfer opportunities within the team and with international peers.We participate in a 24x7 on-call rota to provide support outside business hours.We serve as the lead technical engineering authority for DNS and RADIUS operations in a 3rd line networks team.We lead critical, major, and complex technical incidents, driving resolution and service restoration.We lead post-incident review root cause analysis.We attend operational vendor management reviews and stakeholder updates.We lead best practices and processes for owned platforms.We review new bids or projects that impact DNS or RADIUS.We drive SLA, KPI, and performance reliability objectives across DNS and AAA estates. Technologies: BashSupportLDAPLinuxNetworkPythonSecurityMobile More:
We are Vodafone, a leading international telco serving millions of customers. We believe connectivity is a force for good and use our technology to improve lives, connect people everywhere, and help protect the planet. As part of our global and diverse community, you will join a workplace built on inclusion, belonging, and opportunity, with a strong commitment to diversity, equal representation, and support for all backgrounds. We offer the chance to grow your career while helping shape a more sustainable and inclusive world.
last updated 36 week of 2026