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Added 1 month ago
CS
Senior DevOps Engineer
Canadian Solar Inc.
Kitchener, ON
- Full-time
Proficiency in scripting languages (e.g., Python, Bash, Java, Ruby, PHP, PowerShell).
Added 2 months ago
AC
Sr Guidewire Developer -PolicyCenter
Aviva Canada
Markham, ON
- Full-time
As a Senior Guidewire PolicyCenter Developer, you will be responsible for the design, configuration, and development of PolicyCenter solutions that support Aviva’s core policy lifecycle.…
Added 2 months ago
RB
Staff Software Engineer
Ritchie Bros.
Vancouver, BC
- Full-time
Own the design and evolution of workflow orchestration using Apache Airflow (AWS MWAA), driving improvements in reliability and developer experience.
Added 3 months ago
CI
Software Developer in Test (Contract) -
CoreFactor Inc.
Toronto, ON · North York, Ontario
- Contract
CoreFactor is searching for a Software Developer in Test (SDET) on a contract basis for a client in the GTA.
Added 29 days ago
Senior SDET
Tigera
Vancouver, BC
…of our choice and is strongly preferred. However Python or Java with willingness to work primarily in Go is…
Added 2 months ago
S
Sr. Regression Tester with AI Exp
Synechron
Toronto, ON
- $110,000 to $120,000 CAD / year
- Full-time
…functionality of our banking applications. Your expertise in AI, GenAI, Java, Playwright, Selenium, and Javascript will be essential in creating robust test frameworks and ensuring seamless…
Added 2 months ago
C
Sr Director, App Delivery
CIBC
Toronto, ON · Greater Toronto Area, Canada
- Full-time
You can demonstrate 10+ years of experience in IT, application development. Ideally with Java, Springboot, Python, Azure, PostgreSQL, Angular, Flutter, IBM WebSphere Application Server,…
Added 1 month ago
BC
Sr. Software Engineer (AI/ML)
Blackpoint Cyber
Remote, Canada
- $150,000 to $180,000 CAD / year
- Full-time
- Remote
Python required. Familiarity with TypeScript and/or Java.
Added 3 months ago
TS
Sr. Software Developer - Hybrid/Secret Cleared
The Source Staffing
ON · Ottawa West, Ontario
- Full-time
Senior Software Developer - Hybrid/Secret Cleared 90-110k
Added 2 months ago
P
Manager Software Engineering
PointClickCare
Mississauga, Ontario
- $152,000 to $174,000 CAD / year
- Full-time
Strong background in Java, Python, Spring, SQL, and web technologies
Added 2 months ago
P
IT SR&ED, Manager (Bilingual FR/EN)
PwC
Montreal, QC
- Full-time
Broad knowledge of current development technologies including web development, XML, Java, JavaScript, C#, database technologies, open source, mobile apps, and other related technologies
Added 1 month ago
Sr. Developer
Rogers Communications
Brampton, ON · Toronto, ON
4-6 years of experience using Java/J2EE, Rest/Soap Web services, Spring framework and Spring Boot, Kafka, Git, Maven, Nexus, Bitbucket, Artifactory,
Added 2 months ago
PV
Senior Solution Architect BI
Pet Valu
Markham, ON
- Full-time
Added 3 months ago
E
Staff Software Engineer
ecobee
Toronto, Ontario
- Full-time
Proficiency in multiple programming languages and frameworks including Go, Java, TypeScript, C++, Python, etc.
Added 22 days ago
JG
Sr. Java Developer (FULL STACK)
J&M Group
Calgary, AB
- Contract
Exhibit deep understanding of Core Java for efficient coding and system integration
Added 25 days ago
C
Gen AI Python Developer - Assistant Vice President
Citi
Mississauga, ON
- Full-time
We are looking for a Python Developer (Applications Development Sr Programmer Analyst - C12) with hands-on experience developing Gen AI solutions. As a developer, you will leverage your…
Added 4 months ago
L
Senior Java Backend Developer
LTM
Ontario · Ontario, Canada
- $90,000 to $125,000 USD / year
- Full-time
We are looking for a talented and passionate developer to continue to evolve our nextgeneration trading applications The role requires a detailed understanding of software designbest…
Added 4 months ago
L
Java Backend Developer
LTM
Ontario · Ontario, Canada
- $85,000 to $115,000 USD / year
- Full-time
We are looking for a talented and passionate developer to continue to evolve our nextgeneration trading applications The role requires a detailed understanding of software designbest…
Added 2 months ago
R
Staff Software Engineer
RBGlobal
Burnaby, BC
- Full-time
Own the design and evolution of workflow orchestration using Apache Airflow (AWS MWAA), driving improvements in reliability and developer experience.
Added 2 months ago
Sr Guidewire Developer -PolicyCenter
Aviva
Markham, ON
As a Senior Guidewire PolicyCenter Developer, you will be responsible for the design, configuration, and development of PolicyCenter solutions that support Aviva’s core policy lifecycle.…
Added 22 days ago
A
Senior Software Developer (Data & Backend Development)
Autodesk
Toronto, ON · Montreal, QC · AMER - Canada - Ontario - Toronto - University Ave
- Full-time
26WD100339, Senior Software Developer (Data & Backend Development)
Added 22 days ago
T
Sr. DevOps Engineer, TD Securities
TD
Toronto, ON
- Full-time
Added 2 months ago
C
Applications Development Sr Programmer Analyst - Asst. Vice President
Citi
Remote, Canada
- Full-time
- Remote
Basic proficiency in Java or another object-oriented programming language
Added 2 months ago
EN
Sr Principal SW Systems Engineer (10342)
Extreme Networks
Toronto, ON
- Full-time
Fluent in at least one programming language; expertise in Python, Java, or Go is highly preferred
Added 22 days ago
N
Sr. Software Developer, Eqlipse Trading
Nasdaq
Toronto, ON
- Full-time
We’re looking for a Senior Software Developer to join our Eqlipse Trading team. In this role, you'll work on production trading systems used by major financial institutions across North,…

The Source Staffing

Sr. Software Developer - Hybrid/Secret Cleared

ON, Canada
Ottawa West, ON, Canada

Full-time

Apply About employer

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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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