Work Location:Toronto, Ontario, Canada
Hours:37.5
Line of Business:Technology Solutions
Pay Details:$96,900 - $136,800 CAD
Job Description:TDSGI Network is seeking a Senior Network Infrastructure Specialist based in Canada to support TDS network infrastructure globally. The successful candidate will bring deep, hands-on expertise in enterprise networking, low-latency infrastructure, IP multicast, market-data distribution, exchange connectivity, routing and switching, incident management, and controlled production delivery. The role will help maintain and enhance the resilient, secure, and high-performing network services that support TDS electronic-trading platforms and global business operations.
This is a hands-on senior position covering data-center networks, colocation environments, WAN, MAN, LAN, SD-WAN, Internet, B2B connectivity, office infrastructure, and network security integration. The individual will collaborate with regional and global technology teams, Enterprise Network Engineering, Network Operations, cybersecurity partners, application teams, telecommunications carriers, exchanges, colocation providers, managed service providers, and technology vendors.
The role requires strong technical judgment, disciplined change execution, effective incident leadership, comprehensive technical documentation, and the ability to coordinate complex infrastructure initiatives across regions and time zones.
Key AccountabilitiesGlobal Network Infrastructure Delivery - Lead and support the design, implementation, configuration, migration, integration, and lifecycle management of global TDS network infrastructure.
- Deliver network solutions across data centers, colocation facilities, trading locations, offices, WAN, MAN, LAN, SD-WAN, Internet, B2B, exchange connectivity, and out-of-band-management environments.
- Translate business, application, security, resiliency, capacity, and operational requirements into secure, scalable, supportable, and highly available network solutions.
- Lead or contribute to network modernization, infrastructure currency, data-center expansion, office buildouts, network segmentation, hardware replacement, software upgrades, and technology transformation initiatives.
- Coordinate implementations involving multiple regions, technical teams, telecommunications providers, colocation providers, exchanges, vendors, and business stakeholders.
- Ensure solutions align with approved architecture, engineering standards, security controls, operational requirements, naming conventions, and support models.
- Complete technical validation and operational-readiness activities before transitioning new or changed infrastructure into production.
Low-Latency and Multicast Networking - Design, implement, support, optimize, and troubleshoot low-latency network infrastructure supporting electronic-trading and market-data applications.
- Support multicast market-data distribution, including multicast routing, source and receiver connectivity, group management, traffic replication, and end-to-end delivery.
- Troubleshoot multicast issues involving: PIM, IGMP, Rendezvous points, Reverse Path Forwarding, Multicast routing and forwarding tables, Duplicate or missing multicast traffic, Packet loss, congestion, latency, and out-of-sequence traffic
- Analyze latency-sensitive traffic using packet captures, interface statistics, network telemetry, routing information, device logs, and monitoring platforms.
- Identify and help remediate latency, jitter, packet loss, microbursts, congestion, buffering, unnecessary network hops, and capacity constraints.
- Work with trading-application, market-data, exchange-connectivity, security, server, and infrastructure teams to understand traffic flows, latency expectations, resiliency requirements, and failover behavior.
- Support connectivity to exchanges, market-data providers, B2B partners, external clients, vendors, and colocation facilities.
- Validate primary and disaster-recovery network paths, multicast convergence, redundancy, capacity, and failover behavior.
- Lead technical troubleshooting during incidents affecting electronic trading, market-data delivery, exchange connectivity, or other latency-sensitive services.
Routing, Switching, and Network Services - Configure, support, and troubleshoot complex Layer 2 and Layer 3 network environments.
- Provide advanced expertise in technologies such as: BGP, OSPF, TCP/IP, IP multicast, VLAN, VRF, Route filtering and redistribution, First-hop and routing resiliency, Quality of Service, EVPN/VXLAN, Network segmentation, High-availability routing and switching
- Support Arista and Cisco network platforms in data-center, colocation, and low-latency environments.
- Support routing integration, segmentation, policy implementation, NAT, and connectivity troubleshooting involving Palo Alto firewall infrastructure.
- Analyze end-to-end traffic paths across switching, routing, firewalls, telecommunications carriers, exchange networks, third-party services, and application infrastructure.
- Support DNS, DHCP, IP address management, AAA, logging, network-time, and related infrastructure-service integrations where applicable.
- Maintain alignment with approved hardware, software, configuration, and security standards.
Operational Support and Incident Management - Provide senior-level troubleshooting and escalation support for complex network incidents, service degradation, and production connectivity issues.
- Lead or participate in major-incident technical triage, impact assessment, service restoration, stakeholder communication, and follow-up remediation.
- Diagnose routing, switching, multicast, firewall, circuit, packet-loss, latency, capacity, application-connectivity, network-path, and device-health issues.
- Work with Network Operations and other infrastructure teams to maintain service availability, stability, and resiliency.
- Coordinate with telecommunications carriers, exchanges, colocation providers, managed service providers, equipment vendors, and B2B partners during service-impacting events.
- Develop corrective actions addressing the underlying stability, resilience, capacity, monitoring, or maintainability concerns identified during incident investigations.
- Contribute to post-incident reviews and ensure agreed technical remediation actions are documented and completed.
- Participate in an on-call or after-hours support rotation where required.
Monitoring, Performance, and Capacity Management - Use enterprise and TDS monitoring platforms to identify incidents, investigate performance, validate infrastructure health, and support capacity planning.
- Monitor and analyses latency, jitter, packet loss, interface errors, discards, utilization, routing state, device health, multicast behavior, and network-path performance.
- Ensure new or changed infrastructure is integrated with the required monitoring, logging, configuration-management, inventory, and alerting platforms.
- Contribute to network-performance baselines, service-availability reviews, capacity assessments, and proactive remediation.
- Identify opportunities to improve visibility through telemetry, dashboards, higher-frequency monitoring, packet analysis, and automation.
- Support performance testing and technical validation for new applications, infrastructure changes, capacity increases, and disaster-recovery exercises.
Change, Risk, and Control Management - Prepare and execute production changes in accordance with established change-management, risk-management, and approval requirements.
- Produce clear implementation, validation, rollback, impact, dependency, risk, and communication plans.
- Ensure production changes are technically reviewed, appropriately approved, completed within authorized implementation windows, and closed with the required evidence.
- Evaluate technical and operational risks associated with network implementations, migrations, incidents, exceptions, and temporary solutions.
- Escalate design exceptions, operational gaps, infrastructure risks, and deviations from approved standards to the appropriate stakeholders.
- Support audit, compliance, security, software-currency, asset-management, vulnerability-remediation, and control-remediation activities.
- Ensure network infrastructure remains on approved and supportable hardware and software versions.
- Participate in failover tests, disaster-recovery exercises, resiliency validation, and remediation of identified gaps.
Documentation and Operational Readiness - Create and maintain high-quality network diagrams, high-level designs, low-level designs, implementation plans, rollback plans, operational support documents, standards, procedures, inventories, and troubleshooting guides.
- Document network topology, routing, segmentation, multicast flows, monitoring, failover behavior, circuit information, service dependencies, support contacts, and escalation paths.
- Ensure newly delivered infrastructure has complete monitoring, support, asset, configuration, security, recovery, and operational documentation.
- Maintain accurate infrastructure information within approved repositories and operational systems.
- Conduct or participate in design reviews, operational-readiness reviews, change reviews, post-implementation reviews, and knowledge-transfer sessions.
- Develop reusable documentation and implementation patterns that improve global consistency and reduce operational risk.
Technical Leadership and Collaboration - Act as a senior technical resource and escalation point for complex network initiatives, incidents, and infrastructure decisions.
- Independently lead technically complex implementations, migrations, upgrades, troubleshooting activities, and service-restoration efforts.
- Provide technical guidance and mentoring to other team members while promoting collaboration and knowledge sharing across regions.
- Lead technical discussions involving architecture, engineering, operations, security, application teams, project stakeholders, vendors, and service providers.
- Review technical designs and deliverables to identify implementation, resilience, security, capacity, supportability, monitoring, and operational-readiness gaps.
- Communicate complex technical matters clearly to technical and non-technical audiences.
- Manage multiple concurrent priorities while maintaining delivery quality, control compliance, and production stability.
- Promote standardization, automation, repeatable delivery, improved observability, and operational simplification.
- Represent TDSGI Network requirements while maintaining alignment with enterprise architecture, engineering, and security direction.
Required Qualifications - Significant hands-on experience supporting complex enterprise network infrastructure, preferably within financial services or another highly available, regulated environment.
- Advanced experience supporting low-latency networks in capital-markets, electronic-trading, market-data, or similarly time-sensitive environments.
- Strong understanding of packet forwarding, latency, jitter, packet loss, microbursts, congestion, buffering, and end-to-end network-path analysis.
- Advanced knowledge of IP multicast, including: PIM Sparse Mode, IGMP, Rendezvous-point concepts, Reverse Path Forwarding, Multicast source and receiver behavior, Multicast routing and forwarding tables, Multicast troubleshooting
- Experience supporting multicast market-data distribution across datacenter, colocation, or exchange-connectivity environments.
- Advanced routing and switching knowledge, including: BGP and eBGP, OSPF, TCP/IP, VLANs and VRFs, Route filtering and redistribution, Quality of Service, High-availability routing and switching, Resilient Layer 2 and Layer 3 designs
- Hands-on experience with Arista and Cisco networking platforms in production environments.
- Practical experience with Arista Cloud Vision.
- Experience with Palo Alto firewalls, including routing integration, segmentation, NAT, security-policy implementation, and troubleshooting.
- Experience supporting WAN, MAN, LAN, Internet, MPLS, SD-WAN, data-center, branch, office, and colocation connectivity.
- Experience supporting B2B, third-party, client, vendor, exchange, or extranet connectivity.
- Strong troubleshooting skills using CLI diagnostics, packet captures, telemetry, device logs, routing tables, multicast tables, interface statistics, and monitoring data.
- Experience executing production network changes within formal change-management and risk-control processes.
- Ability to create and review high-level designs, low-level designs, network diagrams, implementation plans, validation plans, rollback plans, and operational documentation.
- Experience working with telecommunications carriers
