Sr. Software Developer - Hybrid/Secret Cleared
About The Position
The Source Staffing is supporting a leading Canadian defence technology organization in hiring an Intermediate Software Developer / Engineer to join a mission-critical program supporting the Department of National Defence (DND). This role is ideal for Secret cleared developers in the Ottawa region who are looking to apply their skills to operationally relevant systems used by the Canadian Armed Forces, specifically LC4ISR. You’ll be contributing directly to tactical command-and-control capabilities in a highly collaborative, agile delivery environment. This role offers the chance to work on active DND programs with real operational impact, join an internal team deeply embedded in Canada’s defence and security ecosystem, and engage in stable, long-term program work. You will collaborate with company colleagues, experienced engineers, CAF stakeholders, and system integrators.
Requirements
- Active SECRET security clearance (mandatory – must be valid and transferable)
- Minimum 10 years of software development experience
- Proficiency in Java and or C#
- Experience working in secure or regulated environments (defence, public sector, or similar)
- Solid understanding of software architecture, integration, and debugging
- Degree in Computer Science, Engineering, IT, Science or related field
- Equivalent hands-on experience in defence or secure environments will be considered
- Strong problem-solving and analytical thinking
- Ability to work effectively in cleared, multi-stakeholder environments
- Clear and professional communication skills
- Experience with automation, monitoring, and secure development practices
Nice To Haves
- Exposure to NATO standards or STANAG 4586
- Previous work on command-and-control (C2) systems or defence-related platforms
Responsibilities
- Design, develop, and enhance software systems within an LC4ISR framework
- Support system integration, verification, and validation activities
- Analyze and resolve system-level issues, including performance and interoperability challenges
- Collaborate with internal teams and external stakeholders to ensure system reliability and maintainability
- Conduct technical investigations into third-party software and integrations
- Review and contribute to technical documentation (interfaces, components, specifications)
- Support integration testing and evaluation activities in controlled environments
- Contribute within a SAFe Agile delivery model
Benefits
- Full Benefits
- 4 weeks' Vacation
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What This Job Offers
Job Type
Full-time
Career Level
Senior
