Sergii Lebed

Senior Security Architect @SGI

Toronto, ON, CA

I design and deliver enterprise security architecture aligned with business objectives, regulatory requirements, and evolving threat landscapes. I translate risk management strategies into practical security solutions and collaborate with cross-functional teams to support secure digital and cloud transformation initiatives.Responsibilities:• Conduct security threat and risk assessments (TRA) of applications, cloud platforms, and IT infrastructure• Design and maintain enterprise security architecture aligned with business, technology, and threat drivers• Develop security strategies, architecture roadmaps, and secure-by-design practices• Deliver SASE and SSE architecture solutions integrating SWG, CASB, and cloud security controls across hybrid and multi-cloud environments• Support RFP processes by defining security requirements, evaluating vendor solutions, and providing recommendations• Develop security standards, policies, and governance frameworks• Leverage AI-assisted platforms (ChatGPT, Microsoft Copilot, Security Copilot, Perplexity AI) to enhance risk assessments, analysis, and documentation workflows• Develop and implement an AI Governance Framework to support responsible and secure adoption of AI technologies• Perform threat modelling and security architecture reviews to identify and mitigate risks early in the design phase• Lead third-party security assessments, including review of SOC 2 and vendor security documentation• Collaborate with privacy teams to identify sensitive data flows and implement appropriate protections• Provide security guidance for enterprise projects and technology initiatives• Lead incident response exercises and integrate lessons learned into architecture improvements• Author internal cybersecurity educational content to promote security awareness and strengthen security culture

Kyiv College of Telecommunications

Bachelor's degree, Telecommunications

HTWK Leipzig

Internship, Telecommunications

State University of Telecommunications

Master's degree, Information Communication Networks Engineering