Sr. Software Developer - Hybrid/Secret Cleared
Top Benefits
About the role
Senior Software Developer - Hybrid/Secret Cleared 90-110k
About the Opportunity 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.
Why This Role Stands Out Work on active DND programs with real operational impact Join an internal team deeply embedded in Canada’s defence and security ecosystem Stable, long-term program work (not short-term project churn) Collaborate with company colleagues; experienced engineers, CAF stakeholders, and system integrators
The Role You will contribute to the design, development, and integration of tactical software applications, ensuring they meet the performance, reliability, and security requirements expected in defence environments. This is a hands-on development role with exposure to system-level thinking, integration challenges, and real-world deployment considerations. Please note that while the need to apply is urgent, and initial confirmation may come within a week, the actual start date may likely be 3-5 weeks.
Key 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
Requirements Required Qualifications Must-Have 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
Assets
Exposure to NATO standards or STANAG 4586 Previous work on command-and-control (C2) systems or defence-related platforms
Education Degree in Computer Science, Engineering, IT, Science or related field Equivalent hands-on experience in defence or secure environments will be considered
Core Competencies 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
Work Environment Based in Kanata, ON, Hybrid, 4 days on-site (flexible) Collaboration with internal colleagues, government, military, and contractor teams Casual
How to Apply If you are a SECRET-cleared software developer in the Ottawa area looking for meaningful, long-term work in the defence space, we encourage you to apply for this or for future consideration Submit your resume to The Source Staffing at jobs@thesourcestaffing. com
Benefits Full Benefits; 4 weeks' Vacation
Not the right fit? Search for Software Developer jobs in Ottawa, Ontario, Canada
About The Source Staffing
Source Staffing, Inc. (SSI) is a leading provider of temporary personnel and management support services for government agencies and private industry in the Washington, D.C. Metropolitan area. Our services are provided across a wide range of disciplines.
SSI is organized to effectively operate and manage contracts of short or long term duration on both a regional and national level. Contract services are organized and monitored through three major service groups:
Facilities Operations Support Management Services Support Professional & Administrative Staffing Support
A diversified staff of dedicated professional and technical experts supports each of these service areas.
SSI has consistently supplied timely and quality staffing support to numerous federal government agencies since 1988 and has the management structure and the quality control procedures in place to service these labor hour base requirements.
492210 – Information Management Services 518210 – Data Processing, Hosting and Related Services 541513 – Computer Facilities Management Services 541611 – Administrative Management & General Management Consulting Services 541612 – Human Resources and Executive Search Consulting Services 561110 – Office Administrative Services 561210 – Facility Support Services 561320 – Professional Administrative Support Personnel 561439 – Other Business Service Centers (Including Copy Shops)
Similar Jobs
Sr. Software Developer - Hybrid/Secret Cleared
Top Benefits
About the role
Senior Software Developer - Hybrid/Secret Cleared 90-110k
About the Opportunity 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.
Why This Role Stands Out Work on active DND programs with real operational impact Join an internal team deeply embedded in Canada’s defence and security ecosystem Stable, long-term program work (not short-term project churn) Collaborate with company colleagues; experienced engineers, CAF stakeholders, and system integrators
The Role You will contribute to the design, development, and integration of tactical software applications, ensuring they meet the performance, reliability, and security requirements expected in defence environments. This is a hands-on development role with exposure to system-level thinking, integration challenges, and real-world deployment considerations. Please note that while the need to apply is urgent, and initial confirmation may come within a week, the actual start date may likely be 3-5 weeks.
Key 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
Requirements Required Qualifications Must-Have 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
Assets
Exposure to NATO standards or STANAG 4586 Previous work on command-and-control (C2) systems or defence-related platforms
Education Degree in Computer Science, Engineering, IT, Science or related field Equivalent hands-on experience in defence or secure environments will be considered
Core Competencies 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
Work Environment Based in Kanata, ON, Hybrid, 4 days on-site (flexible) Collaboration with internal colleagues, government, military, and contractor teams Casual
How to Apply If you are a SECRET-cleared software developer in the Ottawa area looking for meaningful, long-term work in the defence space, we encourage you to apply for this or for future consideration Submit your resume to The Source Staffing at jobs@thesourcestaffing. com
Benefits Full Benefits; 4 weeks' Vacation
Not the right fit? Search for Software Developer jobs in Ottawa, Ontario, Canada
About The Source Staffing
Source Staffing, Inc. (SSI) is a leading provider of temporary personnel and management support services for government agencies and private industry in the Washington, D.C. Metropolitan area. Our services are provided across a wide range of disciplines.
SSI is organized to effectively operate and manage contracts of short or long term duration on both a regional and national level. Contract services are organized and monitored through three major service groups:
Facilities Operations Support Management Services Support Professional & Administrative Staffing Support
A diversified staff of dedicated professional and technical experts supports each of these service areas.
SSI has consistently supplied timely and quality staffing support to numerous federal government agencies since 1988 and has the management structure and the quality control procedures in place to service these labor hour base requirements.
492210 – Information Management Services 518210 – Data Processing, Hosting and Related Services 541513 – Computer Facilities Management Services 541611 – Administrative Management & General Management Consulting Services 541612 – Human Resources and Executive Search Consulting Services 561110 – Office Administrative Services 561210 – Facility Support Services 561320 – Professional Administrative Support Personnel 561439 – Other Business Service Centers (Including Copy Shops)