Network Security & Cisco ISE Specialist - VOIS

Who we are VOIS (Vodafone Intelligent Solutions) is a strategic arm of Vodafone Group Plc, creating value for customers by delivering intelligent solutions through Talent, Technology & Transformation. As the largest shared services organisation in the global telco industry with 30,000 FTE, our portfolio of next-generation solutions and services are designed in partnership with customers across Vodafone Group, local markets, and partner markets to simplify and drive growth. With our strategic partner Accenture, we work alongside our Vodafone customers, other Telco and tech companies to drive transformation, meet the challenges of our industry and ensure we stay relevant and resilient. This partnership is a unique, industry-first model which brings together the best of in-house and 3rd party capability. We work with customers across 28 countries from 10 VOIS locations: Albania, Egypt, Hungary, India, Romania, Spain, Turkey, UK, Germany, Ireland, and with a network of teams in Czech Republic, Italy, Greece, and Portugal. #VOIS #BeUnrivalled #CreateTheFuture About this Role We are seeking a skilled Network Security & Cisco ISE Specialist to support and enhance critical operational support systems and network security platforms within a global telecommunications environment. This role is responsible for ensuring the availability, security, performance, and continuous improvement of Cisco Identity Services Engine (ISE), authentication platforms, and associated network security solutions. The successful candidate will work across multiple technologies, vendors, and stakeholders to deliver secure, reliable, and customer-focused services while driving automation, operational excellence, and digital transformation initiatives. What you’ll do Manage, configure, upgrade, and maintain Cisco ISE environments, including policies, command sets, dictionaries, patches, and domain onboarding activities.Administer authentication and access management platforms, ensuring effective policy enforcement and secure user, device, and network provisioning.Integrate security platforms with external technologies such as SIEM, LDAP, MFA, TACACS+, and monitoring network security technologies including DDoS protection platforms, RPKI, authentication systems, and operational assurance tools.Troubleshoot incidents, perform root cause analysis, review logs, and deliver timely service restoration within agreed service levels.Develop and utilise automation capabilities through APIs and scripting to improve operational efficiency and customer experience.Coordinate application lifecycle activities including upgrades, testing, production deployments, maintenance, and change management.Collaborate with network, engineering, infrastructure, vendor, and operational teams to support platform enhancements and service improvements.Monitor service health, security posture, vulnerabilities, dashboards, alerts, and key operational metrics.Produce operational reports, maintain technical documentation, and contribute to knowledge-sharing hardware lifecycle activities including performance monitoring, asset tracking, warranty coordination, and vendor engagement.Contribute to the adoption of emerging technologies, including software-defined networking and modern network automation capabilities. Who you are Experience working within telecommunications, network operations, operational support systems, or network security environments.Hands-on expertise in Cisco ISE administration, configuration management, policy creation, and operational support.Strong understanding of authentication, authorisation, access control, and identity management technologies.Knowledge of Unix/Linux operating systems and exposure to automation, scripting, or API-based integrations.Familiarity with security technologies such as multi-factor authentication, DDoS protection, vulnerability management, and SIEM platforms.Understanding of networking protocols and technologies, including SNMP, ICMP, and network device management.Experience analysing technical issues, interpreting data, and delivering effective incident resolution.Knowledge of information security governance, compliance requirements, and operational best practices.Ability to work collaboratively across diverse teams and manage multiple priorities in a dynamic environment.Strong communication, documentation, and stakeholder management skills.Professional certification in Cisco ISE or a related network security discipline is advantageous.Experience working within IT or telecommunications environments is preferred.Flexibility to support 24x7 rotating operational requirements. Not a perfect fit? Concerned you may not meet every requirement? Vodafone is committed to creating an inclusive workplace where everyone can thrive. If you are excited about this role but your experience does not align exactly with every aspect of the job description, you are encouraged to apply. You may be the right candidate for this or another opportunity, and the recruitment team will support you in exploring where your skills fit best. What's in it for you Opportunity to work on globally critical network security and operational platforms.Exposure to multi-vendor technologies and large-scale international telecommunications environments.Involvement in digital transformation, automation, and operational excellence initiatives.Collaborative working culture that promotes knowledge sharing, innovation, and continuous for professional development, learning opportunities, and long-term career growth.Work-life balance through effective prioritisation and partnership with leaders and colleagues.Opportunity to contribute to customer-focused services that support global connectivity. What skills you will learn Advanced Cisco ISE deployment, integration, and operational management techniques.Enterprise network security architecture and access management platform integration across SIEM, MFA, authentication, and operational support systems.Automation, API utilisation, and operational process optimisation.Vulnerability management, security monitoring, and reporting capabilities.Software-defined networking concepts and modern network operations practices.Cross-functional stakeholder management and global service delivery expertise.Agile, DevOps, ITIL, and continuous improvement methodologies. VOIS Equal Opportunity Employer Commitment Vodafone recognises and celebrates the value of diversity in building a workforce that reflects the customers and communities it serves. No form of discrimination is tolerated. This includes, but is not limited to, discrimination based on race, colour, age, veteran status, gender identity, gender expression, sexual orientation, pregnancy, maternity or parental status, ethnicity, disability, religion or belief, political affiliation, trade union membership, nationality, citizenship, indigenous status, medical condition, HIV status, neurodiversity, social origin, cultural background, marital or civil partnership status, or socio-economic background. Join Us At Vodafone, we’re working hard to build a better future. A more connected, inclusive and sustainable world. As a dynamic global community, it's our human spirit, together with technology, that empowers us to achieve this. We challenge and innovate in order to connect people, businesses, and communities across the world. Delighting our customers and earning their loyalty drive us, and we experiment, learn fast and get it done, together. With us, you can truly be yourself and belong, share inspiration, embrace new opportunities, thrive, and make a real difference. Alert Apply for Vodafone jobs only through the official Vodafone Careers website to avoid job scams and fraud. #JDEnhancedByTARA Follow us on social media LinkedIn: Facebook: Instagram: