Senior Security Specialist

Putting people first, every day BDO is a firm built on a foundation of positive relationships with our people and our clients. Each day, our professionals provide exceptional service, helping clients with advice and insight they can trust. In turn, we offer an award-winning environment that fosters a people-first culture with a high priority on your personal and professional growth.Your Opportunity BDO Canada is looking for a Senior Security Specialist, a senior member of the Information Security team responsible for supporting the monitoring, detection, investigation, and response to cybersecurity threats across the organization. This role contributes to the continuous improvement of operational security capabilities, provides expertise in threat and vulnerability management, and helps protect BDO's systems, data, and digital assets.Job Responsibilities
Monitor, investigate, and respond to cybersecurity events, alerts, and incidents across enterprise environments.Perform detailed analysis of security incidents, including containment, remediation coordination, root cause analysis, and post-incident reviews.Administer and optimize security technologies that support monitoring, detection, prevention, and response capabilities across the enterprise.Conduct proactive threat and vulnerability analysis to identify risks and opportunities for improving security posture.Collaborate with technology teams to prioritize, track, and remediate security vulnerabilities and risks.Develop and maintain security procedures, response playbooks, and operational processes to improve the effectiveness of security operations.Conduct investigations and analysis to identify, contain, and remediate cybersecurity threats and incidents.Support security assessments, audits, and compliance activities by providing operational security expertise and evidence as required.Assist in evaluating, implementing, and maintaining security technologies and capabilities to strengthen the organization’s security posture.Contribute to security awareness and knowledge-sharing initiatives across technology teams and business stakeholders.Mentor junior team members and provide guidance on security processes, technologies, and best practices.Participate in on-call and incident response activities as required to support business continuity and operational objectives.How do we define success for your role?
You demonstrate BDO's core values through all aspect of your work: Integrity, Respect and Collaboration. You understand our client’s industry, challenges, and opportunities;
clients describe you aspositive, professional, and delivering high-quality work. You identify, recommend, and are focused on effective service delivery to our clients. You share in an inclusive and engaging work environment that develops, retains, and attracts talent. You actively participate in the adoption of digital tools and strategies to drive an innovative workplace. You grow your expertise through learning and professional development.Qualifications & Requirements
Degree in Cybersecurity, Information Technology, Computer Science, Engineering, or a related field, or equivalent education and experience.5+ years of progressive experience in cybersecurity, with a focus on security operations, incident response, threat detection, or cyber defense.Strong knowledge of security operations, incident response, threat detection methodologies, and cybersecurity practices.Experience working with enterprise security technologies supporting monitoring, detection, investigation, and response activities.Experience investigating security incidents and coordinating remediation activities across technology teams.Knowledge of cybersecurity frameworks, standards, and industry best practices.Experience supporting security capabilities across cloud, endpoint, identity, and enterprise technology environments is considered an asset.Strong analytical and problem-solving skills with the ability to assess risks and recommend practical security solutions.Ability to communicate complex technical concepts to technical and non-technical stakeholders in a clear and effective manner.Industry-recognized cybersecurity certifications are considered an asset.Why BDO?
Our people-first approach to talent has earned us a spot among Canada’s Top 100 Employers for 2026.At BDO, our people experience is guided by three core pillars—Do work with genuine care, Do what matters with purpose, and Do what’s next - shaping how we support our people, serve our clients, and grow together.Our firm is committed to providing an environment where you can be successful in the following ways: We enable you to engage with how we change and evolve, being a key contributor to the success and growth of BDO in Canada. We help you become a better professional within our services, industries, and markets with extensive opportunities for learning and development. We support your achievement of personal goals outside of the office and making an impact on your community. We foster a collaborative, inclusive environment where your ideas are valued, and you can do your best work with genuine care and purpose. We encourage innovation and forward thinking, empowering you to embrace what’s next and help shape the future of our firm. Giving back adds up: Where company meets community. BDO is actively involved in our communities by supporting local charity initiatives. We support staff with local and national events where you will be given the opportunity to contribute to your community.Total rewards that matter
We pay for performance with competitive total cash compensation that recognizes and rewards your contribution. We provide comprehensive benefits from day one, and a flexible personal time off policy. We’re committed to supporting your overall wellbeing and provide reimbursement for wellness initiatives that fit your lifestyle.Everyone counts
We are committed to creating a workplace where employees can participate fully, contribute meaningfully and succeed without barriers. We are dedicated to fostering a workplace defined by respect, fairness, and a true sense of belonging for everyone. We recognize and celebrate the unique experiences, identities, and perspectives that each of us bring – and that these experiences strengthen how we work together. Our commitment extends to ensuring that our application process is both inclusive and accessible. If you require accommodation to complete the application process, please contact us.Flexibility
All BDO personnel are expected to spend some of their time working in the office, at the client site, and virtually unless accommodations or alternative work arrangements are in place. Our model is a blended approach designed to support the flexible needs of our people, the firm and our clients. It’s about creating work experiences that meet everyone’s needs and providing flexibility to adjust when, where and how we work to meet the expectations of our role.Code of Conduct
Our Code of Conduct sets clear standards for how we conduct business. It reflects our shared values and commitments and includes guiding principles to help us make ethical decisions and maintain trust with each other, the client, and the public.BDO may use artificial intelligence enabled tools to support certain aspects of the recruitment process. While these tools assist our teams, our use of AI does not replace human decision making, and all employment‑related outcomes are made by BDO personnel.More information on BDO Canada’s Privacy Policy can be found here: Privacy Policy | BDO Canada.When it comes to our people, we believe in helping you unlock possibilities, build your passions, and grow your competitive edge. From our expansive client base to growing talent pool, our people are the core of BDO. Our multi-award winning talent experience continues to make us proud. Our culture is open and collaborative. We foster inclusive ways to thinking and celebrate diversity among all contributors. We respect each other, do all things with integrity, and support our people to be their most authentic selves.
#J-18808-Ljbffr