Senior Security Architect

Assignment: RQ00773 - Security Architect - Senior

Requisition: RQ00773

Job Title: Senior Security Architect for Security architecture assessments

Client: Ontario Health

Start Date: 2026-10-01

End Date: 2027-03-31

Department: Digital Excellence in Health

Office Location: 525 University Avenue, Toronto

Business Days: 124.00

Location: Flexible

Public Sector Experience: Preferred

Must Haves:

• 10 or more years of experience in IT security principles, practices, technologies, programs, and procedures with a solid knowledge of cloud architecture and security controls.
• Certifications in in any of the following cyber security and cloud security architecture (e.g., CISSP-ISSAP, CCSP, GDSA)
• Certifications in any of the following are an asset. ArchiMate, TOGAF, SABSA, Zachman

Description

• Security architecture assessments and consultations are required as a prerequisite to the go live in order to comply with OH Policies and standards. Security architecture assessments ensure compliance of product/project architectures with approved security architectures standards and cloud decision records prior to the project go-live date. The Sr. Security Architect ,will support the project influx and ensure the mandatory security architecture assessment is done in a timely manner that doesn't intervene with the project's go-live dates.

Required Skills:

• 10 or more years of experience in IT security principles, practices, technologies, programs, and procedures with a solid knowledge of cloud architecture and security controls.
• Certifications in in any of the following cyber security and cloud security architecture (e.g., CISSP-ISSAP, CCSP, GDSA)
• Certifications in any of the following are an asset. ArchiMate, TOGAF, SABSA, Zachman

Responsibilities:

• Develop and maintain security reference architectures, network diagrams and other guidelines to support the policies and standards, enabling the delivery of target state enterprise-level Information Security capabilities, and reducing the risk of siloed and redundant solutions.
• Develop security requirements and advise on technologies to be used in cloud environments during an entire project lifecycle.
• Ensure optimal placement and adequacy of the technology to achieve an ideal cloud security architecture, with respect to the cloud service model being used.
• Analyze proposed solution architectures, technology, design, and IT development processes to identify potential threats and vulnerabilities, and to recommend options that enhance the security of solutions and business processes.
• Acts as a subject matter expert and may take on more complex work in developing plans and deliverables and interacting with key internal partners.
• Manage multiple security related projects simultaneously, and present status updates to upper management.
• Leverage existing best practices in addition to proposing, developing, and integrating best practices as they relate to business, policy, information, security, application and technical infrastructure architecture
• Identify and escalate issues and work with projects to ensure application management and quality standards are adhered to

Desired Skills:

• Strong knowledge and understanding of cloud and on-prem system and applications architectures and security controls.
• Deep understanding of security threats, vulnerabilities and safeguards relevant to application development, test and QA environments, and IT (data center) operations.
• Strong knowledge of a wide variety of information systems and security technologies including Operating Systems security, LAN and WAN, Internet protocols and applications, secure communications, firewalls, IDS/IPS, PKI, identity and access management, identification and authentication techniques, role-based access control, malware defense, etc.
• Strong Knowledge an understanding of information security frameworks such as ISO 27001/2 and NIST.
• Good verbal and written communication skills including preparing and presenting and articulating architecture-related concepts to both technical and non-technical audiences
• Functions at a high level of autonomy in setting objectives based on direction from management
• Ability to build sustainable relationships with stakeholders, partner and colleague

Rated Criteria: 100 Points

• Threat Modeling: - 5-7 years of hands-on experience with threat modeling techniques such as STRIDE, PASTA, and MITRE ATT&CK, including the development of data flow diagrams and identification of attack vectors to inform secure design decisions and guide risk mitigation strategies across systems and applications. 30 Points
• 5 7 years of extensive experience with cloud and on-prem security controls and architecture, with a strong ability to identify gaps between the current security posture and industry standards, best practices, and regulatory requirements and proposing security architecture enhancements and mitigations. 30 Points
• Team Player: - Demonstrates strong collaboration skills by working effectively with colleagues across functions, openly sharing information, supporting others to achieve shared goals, and contributing to a positive, respectful team environment. 20 Points
• Presentation Deck: - Over 5 years of experience authoring technical and executive-level reports, and delivering presentations to stakeholders and senior leadership. 20 Points

Deliverables:

• Analyze proposed solution architectures, technology, design, conducting an assessment to identify security architecture gaps and deviations from approved standards/patterns and to identify potential threats and vulnerabilities, then recommend options that enhance the security of solutions.
• Development, update and contribution to security architecture standards, patterns, and reference architectures for cloud environments.
• Ensure optimal placement and adequacy of the technology to achieve an ideal cloud security architecture, with respect to the cloud service model being used.

Additional Terms

• The term of this Engagement Assignment is for 124 Business Days, with an option to extend for up to an additional 126 days at the Agency's discretion. The Engagement Assignment may be extended for unused Business Days at the Agency's discretion.
• The resource will comply with the Agency's policies and procedures.
• The resource will be issued an Agency laptop and is expected to provide at least one additional monitor, an external keyboard and a mouse at their own expense. In addition, when the resource is working from their home location they must have a private office space and are not permitted to work in an open communal space. Internet connection must be hard-wired and suitable bandwidth to support the IT requirements of this role. If these conditions cannot be met within their home office space, the resource will transition to full time in office, and the hybrid option will no longer be available.
• The Agency systems cannot be accessed from outside the province of Ontario, and Agency assets including laptops and related equipment cannot be removed from the province of Ontario, without prior written approval from the Agency.
• Assignment Type: This position is currently listed as "Hybrid". The resource under this request will be required to work onsite as per Hiring Manager sole discretion.