Solution Architect - IMS

Join our Team

About this opportunity:

Join our dynamic team at Ericsson as a Solution Architect. In this pivotal role of Design IMS solutions that scale, interoperate, and perform. You will turn customer needs into robust architectures, lead end-to-end design across multi-vendor environments, and guide delivery teams from blueprint to acceptance. The goal is simple, resilient IMS, ready for VoLTE, VoWiFi, and cloud-native evolution.

What you will do:

•    Own the IMS solution architecture, align HLD and LLD with customer requirements, standards, and Ericsson best practices.
•    Define reference architectures for CSCF, SBC, TAS, DNS/ENUM, and related domains, including integration with EPC/5GC.
•    Lead discovery and translate business and technical needs into clear design decisions, risks, and trade-offs.
•    Produce and review design deliverables, HLD/LLD, capacity and scaling models, security controls, data flows, and call flows.
•    Set integration strategy and guardrails, support MOP definition for live activities, and ensure design compliance during rollout.
•    Define test strategies for SIT, IOT, and UAT, align acceptance criteria with KPIs and SLAs, and sign off on readiness.
•    Guide troubleshooting on complex issues, drive root cause analysis, and steer corrective actions with L2/L3 teams.
•    Optimize architecture for performance, resilience, and cost. Lead parameter tuning guidance and capacity planning.
•    Shape the cloud journey with NFV and cloud-native patterns on Kubernetes, and promote automation across on-prem and hybrid clouds.
•    Partner across domains, Cloud, PACO, Transport, Security, and customer stakeholders. Run technical workshops and design reviews.
•    Maintain architecture standards, reusable patterns, and knowledge assets for repeatable delivery.

The skills you bring:

•    Deep understanding of IMS architecture and 3GPP standards, with practical design authority in multi-vendor environments.
•    Strong grasp of SIP, SDP, DIAMETER, and call flows for VoLTE and VoWiFi, with interworking to EPC/5GC.
•    Hands-on credibility with IMS nodes, CSCF, TAS, SBC, DNS/ENUM, plus policy and charging touchpoints.
•    Proficiency in Linux fundamentals, networking, routing, DNS, TLS, and security principles for IMS.
•    Experience defining test strategies and acceptance for carrier-grade services and KPIs.
•    Comfort with logs and traces, and tools like Wireshark, to validate design and isolate defects.
•    Cloud and virtualization know-how, NFV, containers, Kubernetes, CI/CD, and exposure to cloud-native IMS.
•    Scripting for automation advantage, Python or Shell, to support design validation and tooling.
•    Clear communicator who can lead technical discussions, simplify complexity, and influence decisions.

The skills you bring:

•    BE/B.Tech/MCA or equivalent.
•    9 to 15 years in telecom core or IMS, with at least 5+ years in solution or architecture roles.
•    Proven track record delivering IMS, VoLTE or VoWiFi, from design to acceptance in live networks.
•    Certifications are a plus, IMS or VoLTE, Linux, cloud, Kubernetes, OpenStack.