Assistant System Engineer Jobs in Nepean, ON (NOW HIRING)

Build bold. Deliver impact. Win together.

At General Dynamics Mission Systems–Canada, we’re not just engineering technology — we’re shaping the future of defence and security. Our teams design and deliver advanced, mission-critical solutions that enhance national security, strengthen communities, and protect the people we serve.

If you’re looking for meaningful work that contributes to a safer, more secure world, you’ll find purpose here. Every day, your skills will directly impact programs that matter.

The Land Command, Control, Communications, and Computers Intelligence, Surveillance, and Reconnaissance (C4ISR) Applications team has an opportunity for a System Engineer to participate in the integration and validation of applications for the Canadian Army. The team builds and integrates a large variety of custom and Commercial Off the Shelf (COTS) applications and plugins used by soldiers in the Land Command Support System (LCSS), including Battle Management, Planning, Communication, and Data Exchange. We work hand-in-hand with our customer to integrate leading technologies from a variety of global vendors.

This is a software integration and testing role. In this role, you will work on investigating and setting up new system deployments as well as implementing automated testing. You will be responsible for writing and maintaining test suites and custom plugins. You will work as part of a multi-disciplined engineering team that has adopted an Agile framework, so you will take part in Scrum events, Sprint reviews, and work collaboratively with our program teams and customers.

Typical responsibilities include:

• Work with the customer in an Integrated Product Team environment and interact with software engineering, systems engineering, and solution teams
• Developing test plan and strategies, writing and executing test procedures and fixing defects
• Developing automation tasks for use in lab deployments and integration testing
• Perform integration and verification in labs, including preparing and executing test cases, analyzing results, and documenting findings
• Prepare and review verification test procedures and reports
• Report progress and status, share knowledge, and present ideas to colleagues
• Contribute to continuous improvement initiatives and expand knowledge of the latest technologies and products relevant to your area of work.
• Participate in the system designs presentations, engage in reviews and inspections
• Review requirement specifications, interface control documents, design documents, and use cases to develop test cases for software and integration verification & validation
• Building and maintaining virtual environments, including set up of virtual machines, their software, and networking
• Prepare, analyze, and track defect reports
• Deployment of new system solutions in a lab environment
• Documenting and presenting the results of the integration work
• Working with the Product Owner and the Scrum Master, assist in the elaboration of team backlog items in support of Sprint and PI planning activities
• Participate in validation tests, investigate issues found, maintain related documentation.
• Learn to deploy and upgrade part of the system
• Perform other related duties as assigned
• Always conduct themselves professionally, in all meetings and activities

What You Need to Have to Succeed:

• 5+ years of experience in testing and integration activities, preferably within communications and networking equipment environments
• Bachelor’s degree in Computer Science, Engineering, or a related technical discipline
• Experience defining, developing, and executing integration and qualification test plans, including understanding subsystem interactions and dependencies
• Proven ability to investigate, analyze, and resolve complex technical defects and system issues
• Strong analytical and problem-solving skills, with the ability to draw sound technical conclusions and recommendations
• Hands-on experience with:
  • Windows Servers
  • Networking concepts such as routing and VLANs
  • Microsoft applications
  • Voice and/or data networks
  • Automation tools such as Python and Squish
  • Troubleshooting and diagnostic tools such as Wireshark
  • Simulation and test support tools

What Makes You Stand Out:

• Experience with scripting and automation using Python
• Experience working with automated testing frameworks such as Squish
• Familiarity with GitLab and Artifactory
• Experience with automated deployment tools such as Ansible
• Exposure to Continuous Integration / Continuous Deployment (CI/CD) environments and practices
• Knowledge of the Scaled Agile Framework (SAFe) and/or software/product development lifecycle processes
• Military or defence industry experience, including understanding of deployment and support of technological assets

It is a requirement that General Dynamics Mission Systems-Canada be registered with the Canadian Controlled Goods program and that all of its workforce be security assessed. Successful applicants must meet all applicable security requirements, including but not limited to the ability to obtain and maintain a Canadian government security clearance. Applicants may be required to meet additional security requirements in order to gain access to technical data, classified areas or information that is subject to international regulations. You must be eligible to work in Canada.

What We Offer 
The hiring range for this position is $85,000-110,000 $CAD annual.

Our goal is to provide a fair and competitive offer based on an assessment of internal equity and your qualifications, including:

• Relevant experience
• Technical and non-technical skills
• Education and certifications

Benefits
At General Dynamics Mission Systems–Canada, we prioritize work-life balance. As a fulltime regular/term employee, you can enjoy a supportive, friendly and respectful environment with a competitive total rewards package.

• Comprehensive medical, dental and vision coverage for you and your eligible dependents, from day one of employment at no cost to you. 
  • Flexible benefit options available (including HCSA).
  • Emergency medical travel insurance.
  • 24/7 virtual health care services. 
• Employee & Family Assistance Program (EFAP) – counselling, life coaching, lifestyle change support, and financial planning.
• Onsite fitness facilities & employee resource groups.
• Defined Contribution Pension Plan (DCPP) with employer contributions after 3 months of service.
  • Access to financial advisors for investment advice and comprehensive financial planning. 
  • Voluntary Registered Retirement Savings Plan (RRSP) accessible from day one. 
• Flexible time away to rest and renew with vacation, holidays, vacation purchase plan and parental leaves (with top up options).
  • Sick leave and disability programs. 
• Grow your career your way with free access to a learning platform offering a wide range of courses and resources.
  • Educational Assistance Program to support formal learning. 
  • Self-directed mentoring opportunities. 
  • Reimbursement for professional and industry-related memberships and dues.
• Employee discounts on travel, home and auto insurance, as well as services and activities.
  • Free onsite parking.
  • Annual scholarship program for children of GD employees.
  • Employee social clubs and recreational activities.

Why join us?

• Purposeful Innovation: You’ll work on innovations that genuinely make a difference. You’ll apply advanced thinking, design expertise, and practical problem-solving to help equip military and allied forces with leading-edge systems. You’ll be surrounded by some of the brightest minds in the defence sector, contributing to next-generation technologies in an environment that celebrates creativity, new ideas, and modern solutions.
• Connection: We believe people do their best work when they feel they belong, and their ideas can flourish. Different perspectives, experiences, and ways of thinking help us innovate and grow. Strong relationships with our teammates help us unite, overcome challenges, and deliver the world-class quality we’re known for. Here, we are committed to inclusivity and ensures every individual feels valued, respected, and empowered.
• Challenging and Rewarding Career Pathways: Your career path matters to us. From mentorship and regular check-ins with your leader to educational support, professional certifications, and continuous training, you’ll have the resources you need to thrive. We encourage internal mobility so you can explore different business areas, broaden your skillset, and expand your network. You’ll be working on high-profile, impactful projects that challenge your skills, expand your expertise, and allow you to both learn from mentors and guide others along the way.

Accommodation 
If you require accommodation during any stage of the application process, please contact Human Resources via recruitment@gd-ms.ca.

Closing Date
We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.