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Added 3 months ago
Manager Development FCC
Fidelity Canada
Toronto, Ontario
Full-time
Provide ongoing communication on development status to senior management, support work effort estimation, roadmap planning, and determination of deliverable timelines.
Added 3 months ago
DevOps Developer
Caseware
Toronto, Ontario
$125,000 to $140,000 CAD / year
Full-time
You will shape the developer experience for teams shipping TypeScript, Angular, NestJS, Java services, serverless workloads, and AWS cloud infrastructure.
Added 17 days ago
Software Engineer - Retailer Experience & Growth - Fullstack, Backend or Frontend
Faire
Toronto, ON · Kitchener, ON
As a Senior Engineer on our Growth team, you'll build products and experiments that directly influence how retailers discover, adopt, and engage with Faire. Your work will sit at the…
Added 13 days ago
Staff Software Engineer - UI Platform
Okta
Toronto, ON
Shape a culture of continuous learning by proactively sharing knowledge, mentoring Senior Engineers, and establishing best practices.
Added 9 days ago
Senior II Software Developer - Agentic System
Coveo
Montreal, QC
Contribute to architectural decisions and engineering best practices across Python, TypeScript, Java, and AWS technologies.
Added 3 months ago
Tech Lead, Software Development
Univeris
Toronto, Ontario
Full-time
Tech Leads at Univeris are senior engineers and people managers who are equally accountable for the technical quality of their team's output and the professional growth of every developer…
Added 3 months ago
Senior Full Stack Developers
FCC / FAC
Regina, Saskatchewan · Alberta · British Columbia · Newfoundland and Labrador · Saskatchewan · Agriculture Place
Full-time
…real business impact? We’re growing our talent community of Senior Full Stack Developers for upcoming opportunities across teams at…
Added 3 months ago
Développeur·euse principal·e de données//Senior Data Developer
Plusgrade
Montreal, Quebec
Snowflake · Python · SQL · Java · Scala · Airflow · Dagster · Kafka · Kinesis · S3 · Glue · Lambda · EMR · ECS · Terraform · CloudFormation · Docker · Kubernetes
Added 3 months ago
Développeur·euse logiciel front-end senior // Senior frontend software developer
Plusgrade
Montreal, Quebec
React · TypeScript · MCP (Model Context Protocol) · AWS Bedrock AgentCore · LangChain · LangGraph · AWS ECS · AWS EKS · GCP · Docker · Datadog · Java · Springboot · CloudWatch · New Relic
Added 3 months ago
Senior Platform Engineer
Scalar
Remote, Canada
$150,000 to $250,000 CAD / year
Full-time · Remote
SDK generation - turning a customer's OpenAPI document into type-safe client libraries across TypeScript, Python, Go, PHP, Java, and Ruby, with code samples and automated GitHub sync
Added 1 month ago
Senior Staff Software Engineer - Mobile(Android)
Capital One
Toronto, Ontario
Full-time
161 Bay Street (93021), Canada, Toronto,Toronto, Ontario,Senior Staff Software Engineer - Mobile(Android)
Added 1 month ago
Software Developer - Android (Canada)
TextNow, Inc.
Waterloo, ON
As a Software Developer on Android, you’ll own the systems, architecture, and tooling behind apps used by millions - operating strategically across mobile, backend, and data, and diving…
Added 9 days ago
Senior Automation Engineer
Tubi - Canada
Toronto, ON
Strong programming skills in JavaScript/TypeScript (preferred), or Python/Java.
Added 2 months ago
Senior Technical Support Analyst
Verily
Remote, Canada
Full-time · Remote
3+ years experience working with Python, or other object oriented programming languages (e.g. Java, C++).
Added 1 month ago
Senior Manager, Data Engineering
Moneris
Remote, Canada
Full-time · Remote
As the Senior Manager, Data Engineering, you will lead the data engineering function responsible for delivering reliable, scalable, and secure data platforms that power Moneris' business…
Added 3 months ago
Manager Development FCC
Fidelity Canada
Toronto, Ontario
Full-time
…delivery risks, dependencies, and operational readiness to senior management, support work effort estimation, roadmap planning, and determination of deliverable…
Added 3 months ago
Senior Geographic Information System Analyst
ADGA Group Consultants Inc
Ottawa, Ontario
$80 to $120 CAD / hour
Contract
We are seeking a skilled Geographic Software Developer to support the development, integration, and maintenance of GIS-enabled web applications and supporting infrastructure within a secure…
Added 3 months ago
Senior Technical Architect - DevSecOps & IT Service Delivery (Defence / NC2SS)
ADGA Group Consultants Inc
Ottawa, Ontario
$130,000 to $150,000 CAD / year
Full-time
Prepare and deliver technical briefings to senior leadership
Added 3 months ago
Senior Product Engineer I - PHP
Docebo
Remote, Canada
$102,800 to $137,000 CAD / year
Full-time · Remote
As a Senior Product Engineer I at Docebo, you aren't just writing code; you are the architect of a world-class SaaS platform that empowers millions to learn and grow. You’ll join a…
Added 3 months ago
Sr. Software Developer - Hybrid/Secret Cleared
The Source Staffing
Ottawa, Ontario
Full-time
Senior Software Developer - Hybrid/Secret Cleared 90-110k
Added 1 month ago
Senior Software Developer
Autodesk
Toronto, ON · AMER - Canada - Ontario - Toronto - University Ave
Full-time
Excellent programing skills with Java, React Typescript.
Added 3 months ago
Senior Software Engineer - Professional Services
Trackunit
London, Ontario
Full-time
…the kind of high-quality engineering that makes Trackunit’s developer experience a genuine competitive advantage for our…
Added 3 months ago
Senior Software Developer, Bank & Brokerage Linking
Wealthsimple Technologies
Remote, Canada
$151,200 to $189,000 CAD / year
Full-time · Remote
Ruby, Java/Kotlin, and Python across the broader platform
Added 3 months ago
Lead Full Stack Developer
Publicis Groupe Holdings B.V
Toronto, Ontario
Full-time
Saatchi & Saatchi is seeking a Lead Full Stack Developer for an innovative AI platform initiative.You have 8+ years building production software systems and at least a few years leading or…
Added 3 months ago
Senior Consultant IIQ
Cyderes
Canada
Full-time
We are seeking an experienced Senior SailPoint IdentityIQ (IIQ) Engineer to join our Identity and Access Management (IAM) team. This individual will be responsible for designing,…

The Source Staffing

Sr. Software Developer - Hybrid/Secret Cleared

Ottawa, ON, Canada

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

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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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