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Added 2 months ago
G
Software Engineer, Full Stack
Gigi
Toronto, ON
- Full-time
We're hiring an AI Builder - a full stack software engineer - to join our engineering team in Toronto and own end-to-end feature development for Gigi, our AI agent.
Added 3 months ago
MH
Senior Full-Stack Automation Engineer - Gravity
MedMe Health
Remote, Canada
- $115,000 to $176,000 USD / year
- Full-time
- Remote
The Gravity pod owns some of MedMe's most critical integration workstreams - connecting pharmacies and healthcare providers to the systems and networks that keep patient care running. Right…
Added 3 months ago
GD
Senior Engineer I
Groupe Dynamite
Mont-Royal, Quebec
- Full-time
…E-Commerce Product teams and be responsible for developing backend systems that power a modern E-commerce mobile app ecosystem. As an experienced Senior Engineer, you will lead feature…
Added 3 months ago
FH
Senior Software Engineer - Fullstack
Function Health
Canada
- Full-time
Own quality and define automated test strategies (unit, integration, e2e) and champion CI/CD and DevOps in Azure.
Added 3 months ago
PI
Data Platform Engineer
Princeton IT Services, Inc
Toronto, Ontario
- Full-time
Bachelor s degree (Master s preferred) in Computer Science, Software Engineering, Information Systems, or a related discipline.
Added 3 months ago
PI
Data Engineer
Princeton IT Services, Inc
Toronto, Ontario
- Full-time
Bachelor s degree (Master s preferred) in Computer Science, Software Engineering, Information Systems, or a related discipline.
Added 2 months ago
EG
Senior Electrical Engineer
Egis Group
Toronto, ON
- $120,000 to $140,000 CAD / year
- Full-time
The Senior Electrical Engineer is responsible for leading the design, development, and implementation of complex electrical systems across a variety of projects. This role provides…
Added 4 months ago
TS
Sr. Software Developer - Hybrid/Secret Cleared
The Source Staffing
ON · Ottawa West, Ontario
- Full-time
integration of tactical software applications, ensuring they meet the
Added 2 months ago
S
Senior DevOps Engineer
SimCorp
Toronto, ON
- Full-time
We are looking for a Senior DevOps Engineer to join our team at SimCorp. This role is pivotal in ensuring the seamless delivery, integration, and reliability of our cloud-based solutions.…
Added 4 months ago
ID
Sr Data Engineer -
iLink Digital
ON · East Toronto (Studio District), Ontario
- Full-time
We are seeking a highly skilled Databricks Engineer with
Added 2 months ago
Senior Lead Systems Engineer, AI & Automation
Braze
Toronto, ON
We're looking for a Senior Lead Systems Engineer who's passionate about building the next generation of enterprise technology through automation, software engineering, AI, and intelligent…
Added 2 months ago
CR
Software Product Owner
Cellula Robotics Ltd
Burnaby, BC
- $50 to $60 CAD / hour
- Full-time
- Temporary
Experience with electro-mechanical systems integration
Added 2 months ago
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Senior Software Engineer
Equinix
Toronto, ON
- Full-time
Build and support integrations between Salesforce, Marketing Cloud, Data Cloud, Qualtrics, 6sense, Openprise, AEM, and other enterprise systems
Added 3 months ago
T
Principal AI Engineer - Tangerine
Tangerine
Toronto, Ontario
- Full-time
Design and implement secure, resilient, and compliant AI platforms that integrate with existing enterprise systems, ensuring alignment with risk, ethics, fairness, and regulatory frameworks
Added 3 months ago
TG
Systems Engineer, Patch Management (12 month contract)
TMX Group
Toronto, Ontario
- $110 to $120 CAD / hour
- Full-time
We are seeking a Systems Engineer to join our team for a 12-month contract. In this role, you will be responsible for architecting, testing, and executing enterprise-wide software updates…
Added 3 months ago
F
Senior Software Engineer (SDE II - Python) - Hybrid/Toronto
Fulfil
Remote, Canada
- $180,000 to $200,000 CAD / year
- Full-time
- Remote
Fulfil is hiring a Senior Software Engineer (Python Backend) in Toronto to become a key technical partner for our North American customers, our India-based engineering team, and our Product…
Added 3 months ago
F
Senior Software Engineer (SDE II - Python) - Remote/Canada
Fulfil
Remote, Canada
- $160,000 to $180,000 CAD / year
- Full-time
- Remote
Fulfil is hiring a Senior Software Engineer (Python) for a Remote role (Canada) Toronto to become a key technical partner for our North American customers, our India-based engineering team,…
Added 4 months ago
T
Senior Software Engineer
Treewalk
Canada
- Full-time
We're building custom internal systems at the cutting edge of agentic AI in the accounting and finance space. The Senior Software Engineer will be the hands-on architect and builder of the…
Added 3 months ago
L
Regulatory Operations Test Engineer
LTM
Ontario · Ontario, Canada
- $100,000 to $110,000 USD / year
- Full-time
Data Analysis: SQL Expertise Develop and Execute Test Plans Create and implement detailed test plans to ensure software and systems meet regulatory standards specific to the insurance…
Added 6 months ago
B
Software Engineer, Product / Mobile
Bree
Toronto, Ontario
- Full-time
Have worked with AWS serverless (Lambda/SQS) or equivalent event-driven systems.
Added 2 months ago
T
AI Solutions Engineer
Thales
Ottawa, ON
- Full-time
The AI Solutions Engineer will bridge the gap between traditional mission-critical software engineering and next-generation autonomous decision support in the context of Land C4ISR under…
Added 2 months ago
MT
Principal DSP Firmware Engineer
Microchip Technology Inc.
Ottawa, ON · Canada - Ottawa - March Road
- Full-time
Knowledge of embedded software or firmware, real-time operating systems (RTOS), and hardware/software interactions.
Added 1 month ago
AI and Data - Manager - AI Engineer
EY
Toronto, ON
As AI Engineer, you will design and build production-grade AI and agentic AI solutions that solve real business problems for EY's clients. You are the core builder on the delivery team,…
Added 2 months ago
C
Sr. AI Engineer – Agentic Systems
Chubb
Toronto, ON
- Full-time
The profile can come from either direction: a software engineer who has moved into AI systems, or an AI engineer with strong systems fundamentals. Either way we expect engineering…
Added 1 month ago
AI and Data - Senior Consultant - AI/ML Engineer
EY
Toronto, ON · Montreal, QC
Strong understanding of testing methodologies and frameworks for AI systems, including bias testing, performance testing, and security testing.

The Source Staffing

Sr. Software Developer - Hybrid/Secret Cleared

ON, Canada
Ottawa West, 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

You will design, develop, and integrate tactical software applications within an LC4ISR framework to meet defence performance and security requirements. Additionally, you will support system integration, verification, and validation activities while collaborating with internal teams and external stakeholders.

Requirements

Candidates must possess an active SECRET security clearance and at least 10 years of software development experience. Proficiency in Java or C# and experience working in secure or regulated environments are mandatory requirements.

Skills

Java
C#
Software Architecture
System Integration
Debugging
Agile
SAFe
Command-and-control systems
LC4ISR
Security clearance
Technical documentation
Verification and validation
Performance analysis
Interoperability
Automation
Monitoring

Benefits

Full Benefits
4 Weeks' Vacation

Visa sponsorship

Not detected in the job text

Keywords

Software Developer
Defence
Secret Cleared
Java
C#
LC4ISR
DND
Canadian Armed Forces
Agile
SAFe
System Integration
Command-and-control
C2
NATO standards
STANAG 4586
Security Clearance
Software Architecture
Debugging
Kanata
Government
Military
Tactical software
Verification
Validation
Interoperability
Automation
Monitoring
Secure development
Technical documentation
Engineering

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