Application Architect

Location: Onsite, Ottawa

Contract Length: ASAP - April 30, 2030 (5 Years )

Security Clearance: Secret (Canadian Federal Government) mandatory requirement

Rate: 100-115/H

• custom cloud application
• low-level programming and embedded systems
• networking and communication protocols
• Real-time and operating systems

Only candidates meeting all mandatory requirements will be considered. We thank all applicants for their interest.

Your New Company

Join a leading global technology services provider, renowned for delivering innovative solutions to public sector clients. As a trusted partner on high-impact projects, our client offers a collaborative and dynamic environment where your expertise will contribute directly to mission-critical outcomes.

Your New Role

As an Application Architect - Cloud Applications, you will play a pivotal role in architecting and delivering advanced cloud-based solutions for a major public sector project in Ottawa. This is an onsite contract role, running from mid-May (pending compliance) through April 30, 2030. You will lead cross-functional teams, mentor junior developers, and collaborate closely with both client and vendor teams to ensure the successful design, integration, and security of complex applications within a fast-paced, regulated environment.

Key Responsibilities:

• Lead the design and development of custom cloud application solutions, ensuring alignment with client requirements and industry best practices.
• Mentor and guide junior developers in architectural principles, secure coding, and design patterns.
• Collaborate with client and vendor teams to drive project objectives and resolve technical challenges.
• Implement and enforce security best practices (e.g., ISO 26262, IEC 62443, NIST 800-53, ITSG-33) for data in transit and at rest.
• Prioritize tasks and initiatives effectively, demonstrating initiative and creative problem-solving.
• Ensure solutions adhere to export regulations and security clearance requirements.

What You'll Need to Succeed

• Canadian Federal Government Security Clearance - Secret (mandatory).
• Canadian citizenship or permanent residency; dual/third nationality must be from an approved country
• 8+ years of experience in application architecture, design, and development, with a strong focus on event-driven architecture.
• Proven experience in the Defence industry or federal projects.
• Expertise in low-level programming and embedded systems (C/C++, Python), including bitwise operations, memory management, microcontroller programming, device drivers, and firmware development.
• In-depth knowledge of networking and communication protocols (e.g., UART, RS-232, RS-485, Modbus, MIL-STD-1553B) and custom binary messaging formats.
• Experience with real-time and operating systems (e.g., embedded Linux), multi-threaded applications, and troubleshooting concurrency issues.
• Strong understanding of system architecture for custom applications, modularity, maintainability, data serialization, and embedded system security.
• Experience in bridging legacy and modern technologies, middleware development (API gateways, event brokers, service mesh).
• Excellent verbal and written communication skills, and the ability to work effectively within tight client timelines.

Nice to Have:

• User interface programming experience (JavaScript/TypeScript, Angular, React, Node.js).

What You'll Get in Return

• Opportunity to work on a high-visibility, long-term public sector project with a global technology leader.
• Competitive hourly rate
• Collaborative, innovation-driven environment where your expertise shapes mission-critical solutions.
• Professional growth through leadership, mentorship, and exposure to advanced cloud and embedded technologies.

What You Need to Do Now

If you are a seasoned Application Architect seeking a challenging, rewarding contract in Ottawa and meet the above requirements, we want to hear from you. Apply today to take the next step in your career and make a lasting impact on a major public sector initiative by sending your updated resume and hourly rate to .