Network Test Analyst - OCS

Your role Capgemini is seeking a Network Test Analyst - OCS to support requirements analysis, test planning, test scheduling, and test execution. The role involves conducting failure analysis, managing defects, and providing comprehensive test reports to customers. Your profile Mandatory Skills :

• Strong Knowledge on 2G, 4G and 5G SA technologies.
• Working knowledge in Charging systems - OCS, 5g-CHF, 5g-CCS (NCC experience preferred)
• Working knowledge with interfaces related to Charging components - Diameter GY/GX/SY, N40/N7/N28, SIP, etc.
• Working knowledge in Core Network – Voice and Data Core
• Working knowledge in Core network elements - MSC, MGW, HLR, HSS, SBC, IMS (TAS and CSCF), UDM, AMF, SMF, PCF, CCS, PCC and PCG, CDR and AMA Specification.
• Strong protocol knowledge in SIP, Diameter, RTP, MEGACO, HTTP, GSM MAP and SS7/SIGTRAN.
• Hands-on experience in CS, IMS (VoNR/VoLTE/VoWiFi) and 5G SA call flows.
• Responsible for issue reproduction , Verification and Validation of fix provided. Preferred Skills:
• Basic knowledge in IP and Network provisioning systems.
• Troubleshooting and debugging skills using tools like Wireshark
• Hands-on experience with Nokia NCC OCS, Surepay OCS and CDR and AMA Specification
• Knowledge in Ericsson nodes
• Quality Management Tools: OpenText ALM.
• Linux shell scripting, Python scripting. If you're excited about this role but don't meet every requirement, we still encourage you to apply, your unique experience could be just what we need. Make it real - what does it mean for you?
• Open access to digital learning platforms
• Active employee networks promoting diversity, equity and inclusion like OutFront, CapAbility or Women@Capgemini
• Declare they have a disability, and
• Meet the minimum essential criteria for the role.
• Please opt in during the application process. Capgemini. Make it real. Need to know
• All roles will require a level of security clearance; BPSS OR Security ClearanceOR Developed Vetting.
• This is an onsite role requires 5 days/week office presence based in Newbury.
• You can bring your whole self to work. At Capgemini building an inclusivefuture is part of everyday life and will be part of your working reality. We havebuilt a representative and welcoming environment, for everyone. About Capgemini Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion. Make it real | www.capgemini.com