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Job Title


Transmit Security Engineer


Company : Apptoza Inc.


Location : mississauga, Ontario


Created : 2026-05-07


Job Type : Full Time


Job Description

Role: Transmit Security EngineerLocation : Toronto, ON(Hybrid)contract Role Descriptions: Design and implement security architectures for transmission networks (optical| DWDM| IPMPLS| microwave| and metro backbone networks)Lead security hardening of transmission equipment| including routers| switches| optical transport systems| and network management platforms Implement and maintain encryption technologies (MACsec| IPsec| optical layer encryption)Perform risk assessments| threat modeling| and vulnerability analysis for transmission infrastructure Ensure compliance with security frameworks| standards| and regulatory requirements (ISO 27001| NIST| SOC| PCI where applicable)Develop and enforce transmission security policies| standards| and operating procedures Lead incident response and root cause analysis for transmission-related security events Collaborate with Network Engineering| Cybersecurity| SOC| and Architecture teams to integrate security into network designs Support audits| penetration testing| and remediation activities Mentor junior engineers and provide technical leadership Engage with vendors for secure product selection| testing| and lifecycle management Participate in network transformation initiatives (cloud connectivity| SDNNFV| 5G transport| zero trust) Essential Skills: Technical Skills Strong knowledge of transmission technologies Optica lDWDM| OTN| MPLS| IP backbone Microwave and carrier-grade Ethernet Expertise in network security IPsec| MACsec| TLS| PKI Key management systems and encryption lifecycle Deep understanding of Layer 13 security risks and controls Experience with firewalling| ACLs| routing security (BGP security| prefix filtering)Familiarity with network monitoring| SIEM| and logging tools Experience securing NMS| OSSBSS| and EMS platformsExperience8 years in telecom| network security| or transmission engineering Proven experience securing large-scale carrier or enterprise networks Hands-on experience with major OEMs (e.g.| Cisco| Juniper| Nokia| Ciena| Huawei| Infinera as applicable)Certifications (Preferred)CISSP| CISM| or CCSPCCNPCCIE Security or Service Provider GIAC| CEH| or equivalent security certifications Desirable Skills: