Senior Applications / Software Architect Level 3 to support secure application architecture, software integration, and data management initiatives within complex defence and security environments Our public sector client is seeking a Senior Applications / Software Architect Level 3 to support secure application architecture, software integration, and data management initiatives within complex defence and security environments .
This role supports the design, development, integration, and sustainment of software solutions operating within secure and classified environments. The position focuses on application architecture, data integration, secure network operations, systems interoperability, application deployment, and information management across multiple enterprise and operational platforms.
Responsibilities
Design and implement application and software architectures supporting enterprise and operational information systems
Develop integration solutions for structured and unstructured data sources across multiple platforms and environments
Design and maintain scalable services supporting data storage, processing, auditing, monitoring, and security requirements
Define and implement access control strategies, authentication mechanisms, and secure data management practices
Develop data ingestion, transformation, and integration services supporting real-time and batch processing requirements
Design, develop, and maintain application programming interfaces (APIs), middleware components, and data exchange services
Develop dashboards, reporting solutions, user interfaces, and visualization capabilities to support operational and business requirements
Develop and maintain application source code, automation scripts, workflows, and deployment pipelines across development, testing, and production environments
Support software release management, configuration management, and continuous integration/continuous delivery (CI/CD) processes
Analyze, troubleshoot, and resolve complex technical issues involving operating systems, virtualization technologies, enterprise infrastructure, networked applications, and secure computing environments
Produce technical architecture documentation, solution designs, implementation plans, and operational support documentation
Collaborate with stakeholders, technical teams, and solution architects to ensure interoperability, scalability, security, and performance requirements are achieved




Support technology modernization initiatives, architecture reviews, and system integration activities
Provide technical guidance and recommendations regarding software architecture, integration strategies, operational risks, and emerging technologies
Must Haves
Applications/Software Architect - 10+ years
Programming Operating Systems & Tactical Data Links (secure/unsecured)
Nice to Have
Experience developing enterprise architecture frameworks, technical roadmaps, and solution strategies for government organizations or large enterprises
Experience supporting the installation, integration, or upgrade of hardware and software infrastructure
Experience configuring and integrating enterprise technologies in collaboration with vendors and technical teams
Experience developing, implementing, or testing disaster recovery and business continuity solutions
Experience preparing work plans, technical schedules, project documentation, and progress reports
Experience working within cybersecurity, secure communications, or classified environments
Our public sector client is seeking a Senior Applications / Software Architect Level 3 to support secure application architecture, software integration, and data management initiatives within complex defence and security environments .
This role supports the design, development, integration, and sustainment of software solutions operating within secure and classified environments. The position focuses on application architecture, data integration, secure network operations, systems interoperability, application deployment, and information management across multiple enterprise and operational platforms.
Responsibilities
Design and implement application and software architectures supporting enterprise and operational information systems
Develop integration solutions for structured and unstructured data sources across multiple platforms and environments
Design and maintain scalable services supporting data storage, processing, auditing, monitoring, and security requirements
Define and implement access control strategies,



authentication mechanisms, and secure data management practices
Develop data ingestion, transformation, and integration services supporting real-time and batch processing requirements
Design, develop, and maintain application programming interfaces (APIs), middleware components, and data exchange services
Develop dashboards, reporting solutions, user interfaces, and visualization capabilities to support operational and business requirements
Develop and maintain application source code, automation scripts, workflows, and deployment pipelines across development, testing, and production environments
Support software release management, configuration management, and continuous integration/continuous delivery (CI/CD) processes
Analyze, troubleshoot, and resolve complex technical issues involving operating systems, virtualization technologies, enterprise infrastructure, networked applications, and secure computing environments
Produce technical architecture documentation, solution designs, implementation plans, and operational support documentation
Collaborate with stakeholders, technical teams, and solution architects to ensure interoperability, scalability, security, and performance requirements are achieved
Support technology modernization initiatives, architecture reviews, and system integration activities
Provide technical guidance and recommendations regarding software architecture, integration strategies, operational risks, and emerging technologies
Must Haves
Applications/Software Architect - 10+ years
Programming Operating Systems & Tactical Data Links (secure/unsecured)
Nice to Have
Experience developing enterprise architecture frameworks, technical roadmaps, and solution strategies for government organizations or large enterprises
Experience supporting the installation, integration, or upgrade of hardware and software infrastructure
Experience configuring and integrating enterprise technologies in collaboration with vendors and technical teams
Experience developing, implementing, or testing disaster recovery and business continuity solutions
Experience preparing work plans, technical schedules, project documentation, and progress reports
Experience working within cybersecurity, secure communications, or classified environments
Disclaimer:
AI may be used in evaluating candidates.
This posting is for an existing vacancy.
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📌 Senior Applications / Software Architect Level 3 to support secure application architecture, softwar (Ontario)
🏢 S.i. Systems
📍 Ontario