Cyber Defence Director

Join nesto — proudly named Canadian Rocketship 2025*. A Deloitte Fast 50 company evolving alongside Canada’s top tech innovators and disrupting a 2.1 Trillion-dollar mortgage industry at light speed by building the mortgage ecosystem of the future. BUILD lending technology with the best developers, AI engineers, and mortgage experts in the country. Work on a modern tech stack and a development framework designed to unlock your full potential and accelerate your career. Why join us Hypergrowth: Deloitte Fast 50 — 3 years in a row Tech community credibility: TechTO Canadian Rocketship 2025* Industry leadership: CLA Lending Company of the Year — 4 consecutive years Talent magnet: CMP Top Mortgage Employer 2025 Trusted technology: powering major financial institutions across Canada An entrepreneurial culture built on trust, speed, uncomfortable ambition, being stronger together, and a relentless obsession with our clients. About the role We're looking for a cyber defence leader to lead our security operations team and continue to grow our cyber defence practice alongside it. This is a hands-on leadership role for someone who can build operational excellence in detection and response while also elevating our security program's maturity through proactive testing, risk management, and cross-functional collaboration. Your day-to-day in that role : Mentor, and develop a team of security professionals, defining career paths and skill development plans, and fostering a culture of excellence, curiosity, and continuous improvement. Own the full incident response lifecycle: triage, scoping, containment, eradication, recovery, and post-incident improvement. Act as senior technical and operational escalation point during high-severity incidents, partnering with Legal, Privacy, Fraud Own detection engineering, converting incident observations into higher-fidelity detections, tuning opportunities, and response automation. Own log source governance: telemetry coverage across our syste