Intermediate Software Developer - Hybrid/Secret Cleared

The Source Staffing; Ottawa; Hybrid; CAD 90,000 - 110,000; Full time

Job summary

The Source Staffing is partnering with a Canadian defence technology organization to hire an Intermediate Software Developer/Engineer in the Ottawa region for a mission-critical LC4ISR program under the Department of National Defence, with SECRET clearance.

This hands-on role focuses on design, development, and integration of tactical software applications in a secure, Agile environment, contributing to operational capabilities.

Qualifications

• Active SECRET security clearance (mandatory – transferable).
• Minimum 5 years of software development experience.
• Strong proficiency in Java.
• Experience in secure or regulated environments (defence/public sector).
• Solid understanding of software architecture, integration, and debugging.

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.
• 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.

Skills

Java

Secret clearance

5+ years software development

secure environments

software architecture

Kotlin

Android development

C#

MVVM

Vue.js

SQLite

Liquibase

NATO standards

STANAG 4586

C2 systems

Education

Computer Science / Engineering / IT degree

Defence or secure environment experience

Tools

Kotlin

Android development

C#

MVVM architecture

Vue.js

SQLite

Liquibase

NATO standards

STANAG 4586

C2 systems

Job description

Intermediate Software Developer - Hybrid/Secret Cleared

Ottawa West, Canada | Posted on 03/18/2026

Intermediate Software Developer - Hybrid/Secret Cleared 90-110k

About the Opportunity

The Source Staffing is supporting a leading Canadiandefence technology organization in hiring an Intermediate Software Developer/ Engineer to join a mission-critical program supporting the Departmentof National Defence (DND).

This role is ideal for Secret cleared developersin the Ottawa region who are looking to apply their skills to operationallyrelevant systems used by the Canadian Armed Forces, specifically LC4ISR.You’ll be contributing directly to tactical command-and-control capabilities ina highly collaborative, Agile delivery environment.

Why This Role Stands Out

• Workon active DND programs with real operational impact
• Joinan internal team deeply embedded in Canada’s defence and securityecosystem
• Stable,long-term program work (not short-term project churn)
• Collaboratewith company colleagues; experienced engineers, CAF stakeholders, andsystem integrators

The Role

You will contribute to the design, development, andintegration of tactical software applications, ensuring they meet theperformance, reliability, and security requirements expected in defenceenvironments.

This is a hands-on development role with exposure tosystem-level thinking, integration challenges, and real-world deploymentconsiderations.

Key Responsibilities

• Design,develop, and enhance software systems within an LC4ISR framework
• Supportsystem integration, verification, and validation activities
• Analyzeand resolve system-level issues, including performance andinteroperability challenges
• Collaboratewith internal teams and external stakeholders to ensure system reliabilityand maintainability
• Conducttechnical investigations into third-party software and integrations
• Reviewand contribute to technical documentation (interfaces, components,specifications)
• Supportintegration testing and evaluation activities in controlled environments
• Contributewithin a SAFe Agile delivery model

Requirements

Required Qualifications

Must-Have

• Active SECRET security clearance (mandatory – must be valid and transferable)
• Minimum 5 years of software development experience
• Strongproficiency in Java
• Experienceworking in secure or regulated environments (defence, publicsector, or similar)
• Solidunderstanding of software architecture, integration, and debugging

Assets

• Experiencewith Kotlin and/or Android development
• Workingknowledge of C#
• Familiaritywith MVVM architecture
• Front-endexperience with Vue.js or similar frameworks
• Exposureto SQLite, Liquibase, or similar data tools
• Exposureto NATO standards or STANAG 4586
• Previouswork on command-and-control (C2) systems or defence-relatedplatforms

Education

• Degreein Computer Science, Engineering, IT, or related field
• Equivalenthands-on experience in defence or secure environments will be considered

Core Competencies

• Strongproblem-solving and analytical thinking
• Abilityto work effectively in cleared, multi-stakeholder environments
• Clearand professional communication skills
• Experiencewith automation, monitoring, and secure development practices
• Basedin Kanata, ON, Hybrid, 4 days on-site (might be some flex here,maybe)
• Collaborationwith internal colleagues, government, military, and contractor teams