Mechanical Engineer designing industrial refrigeration systems for Prairie HVAC/R’s cold - storage, food - processing, and beverage - production clients. Supporting calculations, equipment selection, documentation, commissioning, and field troubleshooting.
About the role
- Staff Design Engineer shaping Thunderbolt, Mozilla’s open-source AI client for enterprise organizations. Building prototypes, front-end experiences, and trusted AI workflows from concept through production.
Responsibilities
- Build functional prototypes and product experiments directly in the Thunderbolt codebase
- Translate ambiguous product ideas, user workflows, partner feedback, and enterprise needs into clear, usable product experiences
- Define interaction patterns for AI-powered chat, search, research, workflow automation, knowledge retrieval, and enterprise administration
- Use AI-assisted development tools to accelerate prototyping and implementation while maintaining quality, usability, security, accessibility, and maintainability
- Partner with product, design, engineering, and enterprise-facing teams to explore, validate, and refine product direction
- Contribute production-quality front-end code where appropriate
- Determine whether prototypes should be discarded, refined, generalized, or productionized
- Improve the usability, accessibility, consistency, and polish of the Thunderbolt user experience
- Develop reusable components, interface patterns, or design-system elements
- Bring a user-centered perspective to technical and product discussions involving AI behavior, trust, transparency, permissions, and workflow clarity
- Consider enterprise needs including data sensitivity, user control, administrative visibility, auditability, and security expectations
- Contribute to a product culture valuing experimentation, maintainability, responsible AI use, and thoughtful user experience
Requirements
- 10+ years of relevant experience in design engineering, front-end engineering, UX engineering, product design with strong technical implementation experience, or a closely related role
- Demonstrated leadership and impact beyond individual deliverables
- Strong front-end engineering skills with modern JavaScript or TypeScript and component-based frameworks
- Experience building prototypes or production features directly in an application codebase
- Strong product and interaction design judgment, including usability, accessibility, information architecture, workflow design, and product polish
- Experience designing, prototyping, or building AI-enabled product experiences such as chat, search, research tools, agents, automation, knowledge interfaces, or workflow tools
- Experience translating ambiguous product concepts into usable workflows, prototypes, and shipped product experiences
- Experience providing technical or product leadership through mentoring, cross-functional coordination, reusable patterns, project ownership, or influence beyond individual deliverables
- Practical awareness of AI, privacy, security, and regulatory considerations, including transparency, user control, permissions, data handling, and trust
- Familiarity with frameworks such as the EU AI Act, Cyber Resilience Act, HIPAA, or comparable requirements
- Strong communication and collaboration skills
- Portfolio, case studies, shipped work, or examples demonstrating design-to-code execution, interactive prototypes, or product experience improvements
- Bonus: experience with enterprise software, developer tools, productivity tools, collaboration tools, self-hosted software, design systems, component libraries, user research, usability testing, open-source, or highly collaborative engineering environments
- Applicants must reside in and have permanent work authorization for the specified country locations; visa sponsorship is not provided
Benefits
- Fully remote work & schedule flexibility
- Company-provided laptop
- Annual bonus program
- Monthly remote work stipend
- Annual professional development stipend
- Access to Coursera learning platform
- Industry conferences
- Company all-hands and team gatherings
- 24 days PTO per year (prorated)
- Your birthday
- Year-end company shutdown
- 9 wellbeing days
- Public holidays
- Other paid leave
- Quarterly wellbeing stipend for personal / family activities
- 401(k) / RRSP contributions
- Health, dental, & vision insurance
- Disability insurance
- Life insurance
- Employee assistance program
- Paid parental leave
- Paid sick days
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
No Education Requirement
Tech skills
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