Solutions Architect (C#, .NET)

Telecoms Cloud Architect Circa £550 per day outside IR35 6 Months initially London/Reading – 1-2 days per week on site We are seeking a Telco Cloud Infrastructure Architect to deliver HLD/LLD designs for large-scale telecom transformation programmes spanning 5G Core, IMS, and cloud-native infrastructure . Key Responsibilities Design vendor-neutral HLD/LLD architectures for Telco Cloud platforms Support migration from VMware to Red Hat / Wind River / cloud-native environments Define resilience, HA/DR, capacity and scaling models Deliver security-by-design (TSA-compliant) architectures Design IP network fabrics (Cisco / Arista) and infrastructure services (DNS, NTP, FW, LB, AAA) Support 5G Core, IMS, UDB, DAB and Load Balancing programmes Drive automation-first / GitOps operating models Support first-site builds and transition into BAU operations Required Experience Strong background in Telco Cloud / Network Architecture Proven delivery of HLD/LLD in large telecom environments Experience with 5G Core, IMS, NFV or cloud-native telecom systems Knowledge of OpenShift / Kubernetes / virtualization platforms Strong IP networking (Cisco / Arista) and infrastructure design skills Experience in HA/DR, capacity planning and security architecture Desirable ETSI NFV / MANO, Open RAN exposure Automation / CI-CD / GitOps experience Spirent or telecom testing frameworks VMware → cloud-native migration programmes Circa £550 per day outside IR35 6 Months initially London/Reading – 1-2 days per week on site