Senior Design Specialist – Wireless Voice Core, IMS

This is a fully remote position, open to applicants in Canada.

📋 Description

• Oversee the architecture, design, and development of IMS and Wireless Voice Core systems (P/I/S-CSCF, SBC, TAS, ENUM, MRF/BGF)

• Architect and support voice services such as VoLTE, VoWiFi, emergency services, roaming, and interconnect

• Implement and sustain scalable, carrier-grade IMS systems that are optimized for both performance and cost

• Establish CI/CD pipelines to automate testing and deployment processes

• Evaluate network performance and enhance architecture; troubleshoot complex technical challenges

• Generate Methods of Procedure (MoP) documentation for configuration and troubleshooting tasks

• Direct testing, validation, and capacity planning for all deployments

• Collaborate with RAN, Packet Core, Policy, Infrastructure, and Database teams to create integrated solutions

• Manage relationships with vendors and influence the direction of solution roadmaps

• Engage with Red Hat OpenStack, OpenShift, AWS, and containerized environments

• Create KPI dashboards and oversee performance metrics

• Actively participate in Agile teams and contribute to roadmap discussions

⛳️ Requirements

• Over 10 years of experience in 3G/4G/5G Voice Core (architecture, design, implementation, operations)

• In-depth knowledge of IMS architecture, interfaces (Gm, Cx, Dx, Sh, Rx, Rf, ISC, Mw), and call session control functions

• Proficient understanding of signaling protocols: SIP, Diameter, H248, SS7, CAMEL, RTP/RTCP, GTP, and 5G protocols

• Expertise in 3GPP specifications and RFC standards

• Practical experience with various IMS vendors (Ericsson, Nokia); platform debugging and configuration skills

• Solid comprehension of Service-Based Architecture (SBA), LTE/5G Core, and subscriber data management (HSS/UDM)

• Proficient in containerization (Docker, Kubernetes, OpenShift, AWS) and orchestration

• Advanced troubleshooting capabilities using Netscout, Wireshark, and PCAP

• Knowledge of TCP/IP networking fundamentals (TCP/UDP/IP/SCTP/Diameter)

• Experience with CI/CD pipelines (GitLab, Agile methodologies)

• Familiarity with data analytics tools (Splunk, BigQuery, Looker)

• Bachelor's degree in Computer Science, IT, Electrical Engineering, or a related STEM field

🏝️ Benefits

• Comprehensive total rewards package featuring a competitive salary and bonus structures

• Minimum of 3 weeks of vacation

• Flexible benefits plan tailored to meet the needs of you and your family

• Option to work in-office, virtually, or a combination of both, depending on role requirements

• Generous company-matched pension and share purchase programs

• Opportunities to contribute to the communities in which we work, live, and serve

• Career advancement and learning & development opportunities to enhance your skills