About MalleumMalleum is at the forefront of next-generation cyber defense, partnering with marquee clients across government, defense, financial services, and critical infrastructure. We're experiencing exceptional growth as demand accelerates for trusted advisors capable of delivering at the intersection of national security, allied intelligence cooperation, and enterprise resilience. Our consultants embed directly with clients to design, secure, and operate the networks and systems behind cutting-edge defensive technologies and programs with national and allied security impact. If you take pride in being the trusted technical hands clients rely on to keep mission-critical environments running and to help them recover when things go wrong, Malleum is where your craft meets purpose. We're seeking a client-facing Network & Security Consultant to deliver hands-on design, administration, hardening, and operational support across client network and security infrastructure, and to play a critical supporting role in active incident response (IR) engagements. In this role you'll work remotely and at times on-site, within client environments including sovereign, regulated, and cleared settings providing the technical expertise, composure, and professionalism that define the Malleum delivery experience. Administer, monitor, and maintain client network infrastructure including routers, switches, firewalls, VPNs, and wireless systems Operate and tune client security tooling such as EDR/XDR, SIEM, email security, vulnerability scanners, and identity platforms (Entra ID, Okta) Design, deploy, and operate Zero Trust Network Access (ZTNA) solutions, including Cloudflare edge, access, and tunnel services, to enable secure remote access, identity-aware policies, and modern perimeter strategies Support Microsoft 365, Azure, AWS,



and hybrid environments within each client's security baseline and compliance posture Lead patch management, vulnerability remediation, and configuration management across client servers, endpoints, and network devices Work odd hours, evenings, weekends, and extended shifts during active IR engagements, including rapid mobilization with little notice when clients are under attack Produce high-quality client deliverables: network diagrams, configuration documentation, runbooks, SOPs, IR action logs, and status reports Serve as a trusted technical point of contact, communicating clearly with client stakeholders ranging from end users to executive leadership during both steady-state and crisis operations Contribute to scoping, estimation, and continuous improvement of Malleum's managed, project-based, and IR service offerings Participate in an on-call rotation supporting critical client infrastructure and security events 7+ years of hands-on experience designing, deploying, troubleshooting, and optimizing enterprise network and security infrastructure across multi-vendor environments. Deep expertise in routing, switching, network segmentation, and firewall policy management, with strong proficiency in Fortinet, Palo Alto, and/or Cisco technologies Demonstrated success working directly with clients
- explicit communication, professionalism, and stakeholder management,



including explaining technical risk and decisions to non-technical leadership Significant progressive experience blending network and cybersecurity responsibilities, ideally in a consulting, MSP, MSSP, or IR setting Solid understanding of Zero Trust Network Access (ZTNA) fundamentals: identity-centric access, least privilege, micro-segmentation, device posture, and continuous verification Hands-on ZTNA delivery experience is a significant asset Hands-on experience with wireless controllers and NAC solutions Willingness and availability to work odd hours, weekends, and extended shifts when supporting active IR matters Working knowledge of Windows Server, Active Directory, Group Policy, and Microsoft 365 / Azure administration Familiarity with Linux administration and scripting (PowerShell, Bash, or Python) for automation and rapid response Microsoft Sentinel, Defender, CrowdStrike, Splunk), including rapid deployment in IR scenarios Exposure to incident response frameworks such as NIST SP 800-61 and SANS PICERL is a strong asset Solid grasp of cybersecurity fundamentals: identity, encryption, logging, hardening, and zero-trust principles Certifications such as CompTIA Security+, Network+, CCNA, CCNP Security, NSE, PCNSA, MS-102, AZ-104, or equivalent strongly preferred; CISSP Associate, SSCP, GCIH, or GCFA an asset Eligibility for Government of Canada security clearance (Secret or higher); Bilingualism (English/French) considered a strong asset Work shoulder-to-shoulder with marquee clients on programs and incidents with genuine national and allied security impact Join a rapidly scaling firm with a flat, high-trust culture and direct access to senior IR and technical leaders Exposure to a wide variety of advanced security tooling, sectors,

📌 Senior Security Specialist (Northside)
🏢 Malleum
📍 Northside