Senior UX Designer - Conversational AI & Commerce

Principle; Greater London; Hybrid; GBP 104,000 - 128,000; Full time

Job summary

Principle in London is seeking a Senior UX Designer to shape Conversational AI and Commerce experiences for a large-scale AI product. You’ll design how users interact with chat, voice, and AI features to make shopping feel natural and helpful.

This is a 12-month contract inside IR35, with PAYE and weekly pay. Hybrid work is offered: 3 days onsite in Central London, 40 hours per week, portfolio required.

Qualifications

• Senior UX experience designing and shipping digital products.
• Hands-on conversational design across chat, voice or AI assistants.
• Understanding of how AI models behave and how to shape what they say.
• AI tools as part of your everyday prototyping and building.
• E-commerce or shopping experience is a strong bonus.
• Portfolio required; applications without one won't be considered.

Responsibilities

• Working out how people actually shop through conversation, designing experiences that feel genuinely helpful.
• Building and testing prototypes quickly and turning what you learn into the next iteration.
• Working closely with engineers, product managers and researchers to land your design intent.

Skills

UX design

Conversational design

AI prototyping

E-commerce experience

Portfolio

Tools

AI tools

Job description

Senior UX Designer - Conversational AI & Commerce

London | 12-month contract | Up to £116,000 per year

What does shopping look like when you can simply ask for what you want? You'd be designing that answer, for an AI product used by millions of people every day.

The offer

• Annual Salary up to £116,000 doe


• 12-month contract, starting ASAP - inside IR35, PAYE, paid weekly via Principle HR


• Location: Central London; Hybrid: 3 days onsite (Tuesday to Thursday), 40 hours per week

What you'll bring

• Senior UX experience designing and shipping digital products, with a portfolio that shows how you think, not just what you made


• Hands-on conversational design experience across chat, voice or AI assistants


• A real understanding of how AI models behave, and how to shape what they say


• AI tools as part of your everyday prototyping and building, not just something you talk about


• E-commerce or shopping experience is a strong bonus


• Portfolio required. Applications without one won't be considered.


• You'll need the right to work in the UK. Sponsorship isn't available for this role.

What your week might look like

• Working out how people actually shop through conversation, and designing experiences that feel genuinely helpful rather than pushy


• Building and testing prototypes quickly, then turning what you learn into the next iteration


• Working closely with engineers, product managers and researchers to land your design intent, and making the case for it