Senior Design Specialist – Wireless Voice Core, IMS
Posted 1ds ago
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Job Description
Senior Design Specialist in Wireless Voice Core & IMS at TELUS, responsible for architecture and development of IMS systems. Collaborating on solutions for network orchestration in the 5G ecosystem.
Responsibilities:
- Lead architecture, design, and development of IMS and Wireless Voice Core systems (P/I/S-CSCF, SBC, TAS, ENUM, MRF/BGF)
- Design and support voice services including VoLTE, VoWiFi, emergency services, roaming, and interconnect
- Deploy and maintain scalable, carrier-grade IMS systems optimized for performance and cost-effectiveness
- Create CI/CD pipelines to automate testing and deployment
- Analyze network performance and optimize architecture; resolve complex technical issues
- Develop Methods of Procedure (MoP) documentation for configurations and troubleshooting
- Lead testing, validation, and capacity planning across deployments
- Collaborate with RAN, Packet Core, Policy, Infrastructure, and Database teams on integrated solutions
- Manage vendor relationships and influence solution roadmaps
- Work with Red Hat OpenStack, OpenShift, AWS, and containerized environments
- Develop KPI dashboards and monitor performance metrics
- Participate actively in Agile teams and roadmap discussions
Requirements:
- 10+ years in 3G/4G/5G Voice Core (architecture, design, implementation, operations)
- Deep expertise in IMS architecture, interfaces (Gm, Cx, Dx, Sh, Rx, Rf, ISC, Mw), and call session control functions
- Strong knowledge of signalling protocols: SIP, Diameter, H248, SS7, CAMEL, RTP/RTCP, GTP, and 5G protocols
- 3GPP specifications and RFC standards expertise
- Hands-on experience with multiple IMS vendors (Ericsson, Nokia); platform debugging and configuration
- Strong understanding of Service-Based Architecture (SBA), LTE/5G Core, and subscriber data management (HSS/UDM)
- Expertise in containerization (Docker, Kubernetes, OpenShift, AWS) and orchestration
- Advanced troubleshooting with Netscout, Wireshark, and PCAP
- TCP/IP networking fundamentals (TCP/UDP/IP/SCTP/Diameter)
- CI/CD pipeline experience (GitLab, Agile methodologies)
- Familiarity with data analytics tools (Splunk, BigQuery, Looker)
- Bachelor's degree in Computer Science, IT, Electrical Engineering, or related STEM field
Benefits:
- Comprehensive total rewards package highlighting competitive salary and bonus structures
- minimum 3 weeks of vacation
- flexible benefits plan to meet the needs of you and your family
- Flexibility to work in-office, virtually or a combination of both, based on the role's requirements
- Generous company matched pension and share purchase programs
- Opportunity to give back to communities in which we work, live and serve
- Career growth and learning & development opportunities to develop your skills




















