Senior Design Specialist – Firewall, Wireless Packet Core

TELUS

Senior Design Specialist leading security architecture for TELUS’ Wireless Core Network. Designing advanced firewall solutions and collaborating with cross-functional teams in telecom engineering.

Posted 7/4/2026full-timeRemote • 🇨🇦 CanadaSenior💰 CA$100,000 - CA$150,000 per yearWebsite

Tech Stack

Tools & technologies

DockerFirewallsKubernetesOpenShiftTypeScript

About the role

Key responsibilities & impact

Lead architectural design for security infrastructure protecting TELUS' Wireless Core Network, with focus on carrier-grade firewalls (Juniper SRX, Palo Alto Networks) across 4G EPC and 5G Service-Based Architecture (SBA) boundaries
Architect, deploy, and scale high-availability firewall solutions protecting critical core interfaces (Gi/SGi, N6, roaming, inter-carrier) and control/user plane functions in containerized environments (RedHat OpenShift)
Ensure firewall architectures adhere to 3GPP and GSMA standards; conduct proactive threat modeling and risk assessments for new 5G functions; support security audits and vulnerability remediation
Lead capacity planning, growth forecasting, and technology lifecycle management; develop vendor roadmaps and business cases for future security investments; manage technical relationships with firewall and core vendors
Partner with RAN, Transport, Policy, Signaling, IMS/Voice, and Virtualized Infrastructure teams to align firewall architectures, policies, and configurations with Wireless Core network functions (AMF/MME, SMF/SPGW-C, UPF/SPGW-U)
Develop CI/CD pipelines for firewall configuration deployment; create detailed Methods of Procedure (MoP) documents; develop KPI dashboards for performance monitoring and optimization
Analyze network performance, resolve complex security issues, and optimize architecture using protocol validation tools (Wireshark, PCAP) and vendor logging mechanisms

Requirements

What you’ll need

10+ years of progressive experience in core network security and telecom engineering in carrier-grade environments
Expert-level experience designing, implementing, and troubleshooting Juniper SRX and Palo Alto Networks firewalls (bare metal and virtual)
Strong technical knowledge of 3G/4G/5G Packet Core network topology, control/user plane separation (CUPS), and Service-Based Architecture (SBA)
Deep understanding of mobile core protocol behavior (GTPv1/GTPv2, HTTP/2, Diameter, SCTP, Service-Based Interfaces)
Deep knowledge of telecom security standards: 3GPP security architecture (TS 33.501) and GSMA guidelines (FS.36/FS.37)
Master-level troubleshooting skills with network analysis tools (Wireshark, PCAP, protocol analyzers)
Proficiency deploying network security in containerization ecosystems (Docker, Kubernetes, RedHat OpenShift)
Experience with CI/CD automation pipelines and modern software development lifecycles (GitLab)
Bachelor's or Master's degree in Computer Science, Information Technology, Electrical Engineering, or related technical STEM field

Benefits

Comp & perks

Comprehensive total rewards package highlighting competitive salary and bonus structures, minimum 3 weeks of vacation, and 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

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Network Security ArchitectureFirewall TroubleshootingMobile Core Protocol BehaviorNetwork Analysis Tools (Wireshark, PCAP)3GPP Security StandardsGSMA GuidelinesControl/User Plane Separation (CUPS)Service-Based Architecture (SBA)Technical Relationship ManagementCapacity Planning