Product Designer - Mobile UI UX

Location: Montreal

About Liftoff
Our Mission:
Making the world a healthier place by gamifying fitness

Liftoff is the Duolingo of fitness, empowering anyone to start and stay at the gym so they develop healthier, more powerful habits.

Our Mission:
Making the world a healthier place by gamifying fitness

Liftoff is the Duolingo of fitness, empowering anyone to start and stay at the gym so they develop healthier, more powerful habits.

We’re a mission-driven team that moves fast, owns the details, and does the work. We’re fully bootstrapped, profitable, and built from zero to $10M+ ARR in under three years.

About The Team
You'll join the Product team and work closely with the Head of Product, collaborating with Engineering, Design, and Growth.

Design front-runs everything we build. The surfaces you make are what our experiments run on, what our retention depends on, and what over a million people open at the gym.

About

The Role
We're hiring a Mobile UI/UX Designer to own app surfaces end-to-end: new flows, redesigns of what's already live, and the design system behind both.

UX is the priority. You'll diagnose and fix existing experiences, not only design new ones, and you'll back those calls with real user input.

Your core focus areas:

Mobile screen, flow, and component design

UX evaluation and repair of live surfaces

User interviews and feedback loops that drive design decisions

Design system growth and consistency

Graphic and visual assets, secondary to product design

What Success Looks Like

Flows that ship and hold up. PM ideas become mockups, then production surfaces, with nothing lost in between.

Existing UX measurably improved. Audits turn into fixes, and the fixes move the metric.

A running feedback loop. User interviews and community signal feed design decisions on a regular cadence.

A design system that scales: consistent visual language, reusable components, fewer one-offs.

Clear communication on what you designed, why, and what it did.

What You’ll Do

Design mobile surfaces end-to-end

Turn ideas and feature briefs into flows, wireframes, and high-fidelity mockups in Figma

Build screens and components that balance playful, game-like design with product clarity and usability

Think in hierarchy, flow, accessibility, cognitive load, and micro-interactions

Evaluate and fix existing UX

Audit live app surfaces and find where users stall, drop, or get confused

Revamp and upgrade existing screens with sharper UX and fresh visuals

Prioritize fixes by impact

Run the feedback loop

Plan and run user interviews and usability sessions

Pull signal from community feedback, support threads, and product metrics

Turn findings into specific design changes, then close the loop after they ship

Own and expand the design system

Maintain a consistent, scalable visual language across the app

Build reusable components that work across screen sizes

Create graphic and visual assets (secondary)

In-app graphics: splash screens, status cards, game-like items, collectibles

Vector character work for our mascot Jymbo, including new poses and outfits as features need them

Occasional graphics for landing pages and social

Communicate animation intent clearly. Storyboard or spec the simple motion your designs need, and execute it in Rive when it's straightforward.

You’ll Likely Succeed If You Have
We don't expect you to check every box. We care most about ownership, judgment, and shipping.

Strong UX fundamentals. You can explain why a layout works, not just build it.

Deep Figma fluency:
Auto Layout, Components, Variables, Prototyping

Mobile-first design experience on shipped apps or game interfaces

Hands-on user research experience. You've run interviews or usability tests and changed a design because of what you heard.

Evidence you've shipped something real: 3+ years in consumer…