Senior Designer (Principle Prototyping)

twentysix; Castletown; On-site; GBP 66,000 - 98,000; Full time

Job summary

twentysix is seeking a Senior Designer with deep expertise in Principle to bring a high-profile mobile prototype to life. You will partner with an existing design team to transform Figma designs into interactive user journeys with thoughtful motion and microinteractions.

Ideal candidates excel in interaction design and prototyping, can work independently while collaborating closely with designers, and have extensive experience turning mobile concepts into realistic, polished experiences.

Qualifications

• Proven experience creating prototypes in Principle.
• Strong interaction and motion design skills.
• Experience building realistic mobile product prototypes.
• Proficiency with Figma and established design files.
• Ability to work independently while collaborating with designers.

Responsibilities

• Build high-fidelity interactive prototypes in Principle.
• Translate Figma designs into polished user flows.
• Design and refine motion, transitions, gestures, and microinteractions.
• Collaborate with product design to reflect intended UX.
• Iterate quickly based on stakeholder feedback.

Skills

Principle prototyping

Interaction design

Motion design

Mobile prototypes

Team collaboration

Tools

Principle

Figma

Job description

The Role

We're looking for a Senior Designer with deep expertise in Principle to help bring a high-profile mobile product prototype to life. You'll partner with an existing design team to transform Figma designs into polished, interactive user journeys with thoughtful motion, transitions, and microinteractions.

This role is ideal for someone who specializes in interaction design and prototyping and has extensive experience using Principle.

What You'll Do

• Build high-fidelity interactive prototypes in Principle
• Translate existing Figma designs into polished user flows
• Design and refine motion, transitions, gestures, and microinteractions
• Collaborate with the product design team to accurately represent the intended user experience
• Iterate quickly based on stakeholder feedback

What You'll Bring

• Extensive experience creating prototypes in Principle (required)
• Strong interaction design and motion design skills
• Experience building realistic mobile product prototypes
• Proficiency with Figma and working from established design files
• Ability to work independently while collaborating closely with designers

Nice to Haves

• Experience creating prototypes for consumer mobile applications
• Familiarity with Apple Human Interface GuidelinesExperience working on large-scale product design initiatives

Pay Range

The expected contract pay range: $65-96 per hour. Contract compensation is determined by location, experience, and skillset. We have three regional pay ranges that are adjusted for cost of living (US1 +15%, US2 +7.5%, US3 Base), *learn more about our pay philosophyand cost of living adjustments.Benefits may be available in accordance with applicable law and company policy, including eligibility based on hours worked and duration of assignment.