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 setting.

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 qualified 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

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📌 Intermediate Software Developer - Hybrid/Secret Cleared (Montreal)
🏢 The Source Staffing
📍 Montreal