Sr. Network Security Specialist

Job description

Conceptual Proactive Problem-Solver Strategic Technologically Savvy Visual Thinker <meta data-json="{"ModuleType":13,"ApplyButtonText":"Apply","JobDetailsAlign":0,"JobDetailsDate":0,"JobDetailsJobTypeId":1,"JobDetailsSelectedDate":"2026-10-29T22:31:49.274Z","JobDetailsJobDateFormat":0,"JobDetailsJobLabelId":"Job ID","JobDetailsJobDatePosting":"Date posted","JobDetailsDescriptionFormat":0,"ShowApplyLater":false,"ShowApplyMobile":true,"ShowApplyLaterMobile":false,"ShowApplyLaterWeb":false,"ApplyLaterText":"Apply Later","ApplyLaterAlign":0,"ApplyLaterSubject":"[[JOB_TITLE]] at [[COMPANY_NAME]]","PublishedCandidateCardPageId":null,"ReferrerPageId":null,"ReferrerPageButtonText":"","ShowSavedJobsIcon":false,"IconLabel":"Save for Later","OverrideCandidateCard":false,"ModulePageType":2,"ModulePageName":"AJD - Design 1","DisplayJobDateFormat":"MM/dd/yyyy","JobDetailsSelectedId":"JR0154050","ApplyUrl":"https://mckesson.wd3.myworkdayjobs.com/External_Careers/job/CAN-ON-Mississauga/Sr-Network-Security-Specialist_JR0154050/apply","JobDescription":"\u003Cp style=\u0022text-align:left\u0022\u003EMcKesson is an impact-driven, Fortune 10 company that touches virtually every aspect of healthcare. We are known for delivering insights, products, and services that make quality care more accessible and affordable. Here, we focus on the health, happiness, and well-being of you and those we serve \u2013 we care.\u003C/p\u003E\u003Cp style=\u0022text-align:inherit\u0022\u003E\u003C/p\u003E\u003Cp style=\u0022text-align:left\u0022\u003EWhat you do at McKesson matters. We foster a culture where you can grow, make an impact, and are empowered to bring new ideas. Together, we thrive as we shape the future of health for patients, our communities, and our people. If you want to be part of tomorrow\u2019s health today, we want to hear from you.\u003C/p\u003E\u003Cp style=\u0022text-align:inherit\u0022\u003E\u003C/p\u003E\u003Cp style=\u0022text-align:inherit\u0022\u003E\u003C/p\u003E\u003Cp style=\u0022color:!important\u0022\u003E\u003Cspan style=\u0022color:#0f4761\u0022\u003EAbout the Role\u003Cspan\u003E\u003Cbr /\u003E\u003C/span\u003E\u003C/span\u003E\u003C/p\u003E\u003Cp style=\u0022color:!important\u0022\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EMcKesson is seeking a Senior Network Security Specialist to design and advance secure, resilient, and scalable network infrastructure across enterprise, hybrid-cloud, and on-premises environments. In this senior individual-contributor role, you will shape network security architecture, establish technical standards, and reduce attack surfaces through Zero Trust, segmentation, and secure access strategies.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/p\u003E\u003Cp style=\u0022color:!important\u0022\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EYou will partner with Security, Enterprise Architecture, Infrastructure, and business stakeholders to translate operational and regulatory needs into practical security designs. You will also evaluate emerging technologies, lead architecture reviews, strengthen network visibility, and help ensure critical connectivity services remain secure, available, and positioned for business growth.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/p\u003E\u003Cbr /\u003E\u003Cp style=\u0022color:!important\u0022\u003E\u003Cspan style=\u0022color:#0f4761\u0022\u003EWhat You\u2019ll Do\u003Cspan\u003E\u003Cbr /\u003E\u003C/span\u003E\u003C/span\u003E\u003C/p\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EDesign secure network architectures for hybrid-cloud and on-premises environments using Zero Trust, network segmentation, micro-segmentation, and secure-by-design principles.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003ELead network security architecture reviews, risk assessments, design validation, and the development of reusable security patterns and standards.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EArchitect and optimize firewall and perimeter security capabilities, including Palo Alto Networks, Zscaler, HPE Aruba EdgeConnect, secure internet gateways, and web proxy solutions.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EDesign secure workforce and device access solutions using Zero Trust Network Access, VPN technologies, Network Access Control, and identity-aware security controls.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EStrengthen threat detection through network traffic analysis, IDS/IPS technologies, security monitoring, telemetry, and security analytics.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EEvaluate technologies, proofs of concept, and vendor solutions to inform network security roadmaps and investment decisions.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EPartner with Security, Enterprise Architecture, Infrastructure, and operations teams to improve resilience, regulatory alignment, and business continuity.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EProvide technical leadership during complex incidents, conduct root cause analysis, and implement sustainable corrective actions and automation.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cbr /\u003E\u003Cp style=\u0022color:!important\u0022\u003E\u003Cspan style=\u0022color:#0f4761\u0022\u003EBasic Requirements\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/p\u003E\u003Cbr /\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003E7\u002B years of professional experience in network engineering, including experience with network architecture, security design, or enterprise infrastructure strategy.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EDemonstrated experience designing and implementing secure enterprise networks across hybrid-cloud and on-premises environments.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EHands-on experience with enterprise firewall technologies, including policy design, configuration, administration, and optimization.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EExperience applying Zero Trust, network segmentation, micro-segmentation, or secure network design principles.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EExperience with routing, switching, and network protocols such as TCP/IP, BGP, OSPF, MPLS, or SD-WAN.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EExperience producing architecture diagrams, design standards, technical documentation, or security review findings.\u003Cspan\u003E\u003C/span\u003E\u003C/span\u003E\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cspan style=\u0022color:#000000\u0022\u003EBachelor\u2019s degree in Computer Science, Information Technology, Engineer