User interface designer Jobs in North York, ON

The Opportunity

As a User Interface / Visual Designer, you’ll help shape and refine the visual language of our desktop, web, and mobile platforms, creating cohesive, accessible, and visually compelling interfaces that express our brand and support intuitive interaction. You’ll join the Design team, which works across Thunderbird and MZLA to deliver high-quality, user-focused experiences.

You’ll work closely with design and front-end development teams to take projects from concept to delivery, translating requirements into layouts, design systems, components, and production-ready assets. You’ll thrive in this role by bringing strong visual craft, a commitment to accessibility and consistency, and a track record of accountability, follow-through, and thoughtful problem-solving, while comfortably driving work forward with support from teammates. .

You’ll play a vital part in delivering polished, intuitive experiences for our global user community and owning medium-sized projects. This is a full-time, remote position working with colleagues across multiple regions and time zones.

What you’ll do :

• Create and refine high-fidelity layouts and UI components.
• Build interactive prototypes, starting from low-fidelity wireframes when needed.
• Deliver visually appealing, accessible interfaces aligned with user needs and brand guidelines.
• Translate designs into implementation-ready specifications and assets.
• Account for responsive behaviour, typography, colour contrast, spacing, and accessibility across platforms.
• Work within and contribute to design systems, component libraries, and style guides.
• Apply information hierarchy, layout, and interaction design to create clear, readable interfaces.
• Identify and articulate visual design issues, extract insights from feedback, and propose design solutions in collaboration with cross-functional partners.
• Support UX research activities by preparing visual assets, participating in studies and applying research findings to visual and interaction details.
• Engage with the open-source community to gather feedback and foster collaboration.
• Support ad hoc projects as required.

What you’ll bring :

Bonus points for :

Work Environment :

You’ll work with our passionate staff and open-source community members from all over the globe to support the mission and objectives of MZLA Technologies Corporation.

This is a remote full-time position. Strong communication and documentation skills are essential for effective collaboration across time zones and disciplines.

What you’ll get :

We benchmark our base salaries to local markets and target the 60th percentile of the peer market. The salary ranges for this role are :

We may consider candidates with strong skills but less than the required experience. Title, level and compensation will be determined based on qualifications and experience.

In addition to competitive salaries, we offer a comprehensive benefits package designed to support your whole self, outlined below.

Work & Career

Rest & Play

Health & Family

Work Eligibility :

Applicants must reside in and have permanent work authorization for the country location(s) specified in the posting. We are unable to consider applicants outside of these markets at this time. And, we do not provide visa sponsorship.

How to Apply :

Please apply directly through our . We carefully review every cover letter and screening question, so take the time to answer each fully. We also value authenticity. We want to hear your perspective, not a bot’s. It's fine to use AI to polish your writing, but not to write your answers. Candidates who submit unoriginal AI generated answers will be disqualified from further screening.

MZLA Technologies Corporation (MZLA) Commitment to diversity, equity and inclusion

MZLA believes in the value of diverse creative practices and forms of knowledge, and knows diversity, equity and inclusion are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities and expressions.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

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