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We’re looking for a mid-level product designer who is highly hands-on and startup-minded. This is a full-stack design role, spanning UX research, product thinking, interaction design, and UI execution, with a strong focus on mobile app experiences.
You will work closely with the Design Lead, product managers, and engineers to design and ship high-quality product experiences quickly. The right candidate is comfortable wearing multiple hats, conducting lightweight research, and moving from insights → flows → UI → production-ready designs.
Responsibilities
Final pay rate will be based on location, qualifications and experience
You will work closely with the Design Lead, product managers, and engineers to design and ship high-quality product experiences quickly. The right candidate is comfortable wearing multiple hats, conducting lightweight research, and moving from insights → flows → UI → production-ready designs.
Responsibilities
- Design mobile-first product experiences from concept through production
- Conduct UX research and user testing to inform design decisions
- Create user flows, wireframes, prototypes, and high-fidelity UI
- Collaborate closely with product and engineering teams to ship features quickly
- Contribute to and maintain design systems and component libraries
- Iterate rapidly based on user feedback and product data
- Support the team in building scalable product experiences in a fast-moving startup environment
- ~4–7 years of product design experience
- Strong mobile app design experience (iOS / Android)
- Experience across the full design stack, including UX research
- Ability to work autonomously and execute quickly
- Strong collaboration with product and engineering
- Comfortable working in startup environments with ambiguity
- Experience with modern design tools and AI-assisted workflows
- Experience in EdTec or experience designing AI-driven, conversational, or coaching-style interfaces preferred
- Exposure to design systems and scalable product design practices
Final pay rate will be based on location, qualifications and experience
- UK: $60–$90/hr
- Spain: $40–$60/hr
- Portugal: $35–$55/hr
Key Skills
Ranked by relevance
product design
design systems
ai
ui
ux
interaction design
wireframes
prototypes
ios
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- Posted
- Mar 17, 2026
- Type
- Full-time
- Level
- Director
- Location
- London
- Company
- Braintrust
Industries
Technology
Information
Internet
Categories
Design
Art/Creative
Information Technology
Related Jobs
3 roles aligned with this opportunity
View Job Details
Related
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2026-05-28
Internship
Entry
Germany
Technology
Information Technology
View Job Details
Related
Computational Linguist — AI / Language Learning
2026-03-21
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AI Agent Builder (Software Developers - OpenClaw)
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