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Added 2 months ago
GD
Software Engineer
General Dynamics Missions System International
Ottawa, ON
- $85,000 to $110,000 CAD / year
- Full-time
The LC4ISR ISTAR team is seeking a working level Software Engineer to support delivery of critical capabilities for the Canadian Army. You will be working with a multidisciplinary…
Added 4 months ago
Senior Full Stack AI Engineer
Ombud
Quinte West, Ontario
These are high-output IC roles. You will ship production code, own systems end-to-end, and operate without a layer of engineering management between you and the product direction. You will…
Added 4 months ago
S
OCS Design Lead
SYSTRA
Toronto, Ontario
- Full-time
…projects. The position operates within multidisciplinary rail systems teams, coordinating across civil, structural, electrical, and systems engineering…
Added 1 month ago
A
Intermediate Pavement Engineer - Airport runways, Taxiways, and Aprons
AECOM
Mississauga, ON
- $81,702.24 to $131,702.24 CAD / year
- Full-time
AECOM is seeking an Airside Civil/Intermediate Pavement Engineer – Airport Project to join our team. This position is based on-site, out of Mississauga.
Added 5 months ago
A
Ports & Marine - Civil Bulk Materials Handling Engineer/Project Manager
AECOM
Victoria, British Columbia · Burnaby, British Columbia
- $110,000 to $160,000 CAD / year
- Full-time
AECOM Western Canada is hiring a Senior Civil/Structural Engineer, responsible for the design and delivery of civil and structural systems for bulk materials handling and marine terminal…
Added 5 months ago
A
Ports & Marine - Civil Bulk Materials Handling Engineer/Project Manager
AECOM
Burnaby, British Columbia
- $110,000 to $160,000 CAD / year
- Full-time
AECOM Western Canada is hiring a Senior Civil/Structural Engineer, responsible for the design and delivery of civil and structural systems for bulk materials handling and marine terminal…
Added 5 months ago
A
Ports & Marine - Civil Bulk Materials Handling Engineer/Project Manager
AECOM
Calgary, Alberta · Burnaby, British Columbia
- $110,000 to $160,000 CAD / year
- Full-time
AECOM Western Canada is hiring a Senior Civil/Structural Engineer, responsible for the design and delivery of civil and structural systems for bulk materials handling and marine terminal…
Added 5 months ago
A
Ports & Marine - Civil Bulk Materials Handling Engineer/Project Manager
AECOM
Edmonton, Alberta · Burnaby, British Columbia
- $110,000 to $160,000 CAD / year
- Full-time
AECOM Western Canada is hiring a Senior Civil/Structural Engineer, responsible for the design and delivery of civil and structural systems for bulk materials handling and marine terminal…
Added 1 month ago
A
Senior Electrical Engineer
AECOM
Mississauga, ON · Calgary, Alberta
- $150,000 to $220,000 CAD / year
- Full-time
Functional design and coordination of automation systems (integration by others), including programmable logic controllers (PLCs), distributed control systems (DCS), and supervisory control…
Added 1 month ago
Staff Software Engineer, Internal Tools
Tubi - Canada
Toronto, ON
We are looking for a Staff Engineer to steer the technical evolution of our AI-centric business platforms, which currently prioritize ad revenue operations such as cross-system…
Added 4 months ago
EM
FPGA Design Engineer
Evertz Microsystems Limited
Burlington, Ontario
- Full-time
The FPGA Design Engineer at Evertz contributes to the development of advanced broadcast equipment used in real-time video and audio production, processing, and transport for Live sports…
Added 4 months ago
E
MTS 2 Full Stack Engineer
eBay
Remote, Canada
- Full-time
- Remote
The eBay Seller Experience team is looking for a dedicated, creative, and highly experienced Full Stack Engineer to help architect, design, and build scalable, high-performing software for…
Added 4 months ago
E
Staff Full Stack Engineer - MTS 1
eBay
Remote, Canada
- Full-time
- Remote
The eBay Seller Experience team is looking for a dedicated, creative, and highly experienced Staff Full Stack Engineer to help architect, design, and build scalable, high-performing…
Added 4 months ago
TS
Sr. Software Developer - Hybrid/Secret Cleared
The Source Staffing
Ottawa, Ontario
- Full-time
integration of tactical software applications, ensuring they meet the
Added 4 months ago
HT
Co-op Engineer - AI Software Engineering
Huawei Technologies Canada Co., Ltd.
Markham, ON
- Internship
We are seeking a forward-thinking Software Engineer to join our team. Our mission is to integrate cutting-edge AI technologies into the core of our mobile ecosystem. In this role, you will…
Added 1 month ago
DH
Software Engineer
Decoda Health
Toronto, ON
- $100,000 to $160,000 CAD / year
- Full-time
As an early engineer at Decoda, you own meaningful surface area from day one. You'll work across the stack to ship product that clinic staff use every hour of every day - and that directly…
Added 4 months ago
RP
Mechanical Design Engineer (Custom Machinery & Automation)
Remote People
Montreal, Quebec
- Full-time
This opportunity is ideal for a Mechanical Design Engineer who enjoys designing real-world machinery from concept through commissioning, rather than making small revisions to existing…
Added 4 months ago
LD
TLD Systems Engineer- Internal
London Drugs INTERNAL
Lethbridge, Alberta
- Other
This full-time staff position is responsible for design, configuration and integration of IT solutions. This position plays a supporting role in IT projects and requires a high level of…
Added 4 months ago
JI
Senior Data Scientist | Scientifique de données senior
Jesta I.S.
Westmount, Quebec · Montreal, Quebec
- Full-time
Jesta I.S. is a Canadian enterprise software company with over 55 years of experience delivering mission-critical solutions to retailers, wholesalers, and brand manufacturers worldwide. Our…
Added 4 months ago
T-
TLD Systems Engineer
TLD - IT & AV Solutions Provider
Lethbridge, Alberta
- $62,000 to $75,000 CAD / year
- Full-time
This full-time staff position is responsible for design, configuration and integration of IT solutions. This position plays a supporting role in IT projects and requires a high level of…
Added 2 months ago
MS
Senior Software Security Engineer
Motorola Solutions
Vancouver, BC · Quebec, QC · AB · BC · ON
- Full-time
This Senior Software Security Engineer will be responsible for analyzing software designs and implementations from a security perspective, identifying and proposing remediations to security…
Added 4 months ago
PG
Lead Full Stack Developer
Publicis Groupe Holdings B.V
Toronto, Ontario
- Full-time
…AI platform initiative.You have 8+ years building production software systems and at least a few years leading or anchoring a team technically. You are a hands-on builder and you hold the…
Added 1 month ago
Software Engineer, Global Payments Technology
Scotiabank
Toronto, ON
Technical understanding – as a standard Software Engineer there will be expectations that you are able to lead technical discussions, challenge design and strategy
Added 4 months ago
S
Ingénieur principal de systèmes de charge utile numérique/ Digital Payload Principal System Engineer
Syntronic
Montreal, Quebec
- Full-time
Syntronic is a global design and development leader specializing in electronics, electro-mechanics, and software. We’re not just a company; we’re a community of innovators. Our teams work…
Added 2 months ago
CO
Staff Software Engineer - Capital One Travel Tech - Full-stack
Capital One
Toronto, Ontario
- Full-time
…With Capital One Business Travel (COBT) scaling rapidly, our integration with Brex is the catalyst propelling us from serving small businesses to powering enterprise giants. As a Senior…

The Source Staffing

Sr. Software Developer - Hybrid/Secret Cleared

Ottawa, ON, Canada

Full-time

Apply About employer

Applications open in a new tab.

Job details

Job type: Full-time
Experience: Minimum 10 years of software development experience
Posting language: English
Posted: Jun 17, 2026

Original job description

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

Apply About employer

More about this job

Responsibilities

Design, develop, and integrate tactical software applications within an LC4ISR framework for the Department of National Defence. Responsibilities include resolving system-level interoperability challenges and contributing to a SAFe Agile delivery model.

Requirements

Requires an active Secret security clearance and a minimum of 10 years of software development experience in Java or C#. A degree in Computer Science, Engineering, or a related field is preferred.

Skills

Java
C#
Software Architecture
System Integration
Debugging
SAFe Agile
LC4ISR
Command-and-Control Systems
Technical Documentation
Verification and Validation
Secure Development Practices
Automation
Monitoring
Problem Solving
Analytical Thinking
Professional Communication

Benefits

Full Benefits
4 Weeks' Vacation

Visa sponsorship

Not detected in the job text

Keywords

Java
C#
LC4ISR
Secret Clearance
DND
SAFe Agile
Command-and-Control
C2 Systems
NATO Standards
STANAG 4586
Software Architecture
System Integration
Defence Technology
Secure Environments
Tactical Software
Verification
Validation
Interoperability
Technical Documentation
Automation
Monitoring

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