Gui Developer Jobs in Ontario (NOW HIRING)

Company Description

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.

Job Description

GDMS-C currently has a requirement for a senior Operator Interface and Graphical User Interface (GUI) Designer within the Land & Joint Solutions Business Area. This role will act as a technical lead and mentor within the UX, Human Factors + Design group, providing hands-on design expertise, coaching, and guidance to more junior designers while remaining an individual contributor role without direct people-management responsibilities.

Typical Duties

The responsibilities and range of activities will vary, but in general will include:

• Provide technical leadership and guidance in human computer interaction as it applies to application and product development roadmaps and lifecycles, best practices, and innovation in coordination with User Experience and Human Factors leaders and Product Owners.
• Coach, train, and mentor junior GUI designers by sharing design practices, reviewing work, providing constructive feedback, and helping build capability across the team.
• Participate in an interdisciplinary integrated project team environment and support designers in understanding project context, user needs, design rationale, and development constraints.
• Work within the UX, Human Factors + Design group to develop specialized Graphical User Interface (GUI) firmware on military embedded hardware devices or software designs for complex applications using the Scaled Agile Framework (SAFe) development process.
• Ability to understand and create a cohesive approach to information management of complex systems.
• Lead aspects of concept exploration and development by facilitating design discussions, guiding design approaches, and helping junior designers translate user needs into practical interface concepts.
• Understand how to employ and champion machine learning, AI, and automation in applications, with the ability to coach others on appropriate use, design implications, and user-centred implementation.
• Identify and create software user interface requirements and analysis of implementation.
• Employs a user centred design philosophy that focuses on designs that meet the needs of the end users, that employs and understands usability testing.
• Prepare, review, and provide feedback on design documents, prototypes, and interface specifications to support quality, consistency, and knowledge transfer across the team.
• Develop and share training materials, design examples, standards, and reusable guidance to help junior designers build confidence and deliver consistent, high-quality GUI and UX outputs.
• Document the analysis, design and test activities in accordance with development standards.

Qualifications

Required Skills & Experience

• Passion for GUI design, UX, and/or Human Computer Interaction, with experience providing technical guidance, coaching, and mentorship to designers.
• Experience designing front-end user interfaces for complex software or firmware products, from concept through low- to high-fidelity designs.
• Ability to build shared design practices, reusable standards, and team capability to improve quality and consistency.
• Strong communication and collaboration skills, including the ability to explain design rationale and influence without direct supervisory authority.
• Experience working with human factors or human systems teams and applying user-centred design practices.
• Experience using GUI prototyping and design tools such as Axure, Adobe Illustrator, Adobe Photoshop, or similar.
• Ability to translate GUI designs into clear assets, specifications, and guidance for development teams.
•  Experience working with or familiarity with AI/ML models is preferred

Education

• Bachelor’s degree or equivalent in Computer Science, Human Computer Interaction, Software Engineering, Industrial Design or applicable scientific discipline is required.

Additional Information

The hiring range for this position is $110,000 - $125,000. 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

As a full-time employee at General Dynamics Mission Systems–Canada, you’ll enjoy a competitive total rewards package that supports your professional and personal well-being:

• Comprehensive medical, dental, and vision coverage for you and eligible dependents from day one (no cost), including flexible benefits options (HCSA) emergency travel insurance, and 24/7 virtual care services.
• Employee & Family Assistance Program (EFAP), onsite fitness facilities, and employee resource groups.
• Defined Contribution Pension Plan with employer contributions after 3 months, RRSP access from day one, and financial planning support.
• Flexible time off including vacation, holidays, parental leaves with top-up options, sick leave, and disability programs.
• Career development through learning platforms, educational assistance, mentoring, and reimbursement of professional memberships.
• Additional perks such as employee discounts, free onsite parking, social clubs, and an annual scholarship program for employees’ children.

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 ensure 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. You’ll work on high-profile, impactful projects that challenge your skills, expand your expertise, and provide opportunities to learn from experienced mentors and grow as an early-career professional. We encourage internal mobility so you can explore different business areas, broaden your skillset, and expand your network.

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.