Senior Product Designer (AI Commerce)

Job description

Founded by

Paul Anthony

, creator and co-founder of

Primer

(Series B, $425M valuation), Colossal is building at the intersection of generative app development and commerce infrastructure. Think: Lovable for commerce, but for non-developers.

We're backed by Tier 1 investors:

Seedcamp

,

10x Founders

,

Connect Ventures

, and are planning to raise our seed round later this year.

Why Colossal?

We're building a brand-new type of AI-native product experience, to power the next generation of online commerce. We value beautiful visual design, combined with thoughtful + creative UX to inspire and delight!

What Product Design is at Colossal

At Colossal, Product Design is not an internal stakeholder executing pre-defined concepts. Design sits at the centre of our product efforts, and involves constant collaboration, research and creative problem solving. Design is here to uncover insights, challenge assumptions, and help us build a category-defining product.

You could be a good fit if...

You are explicitly looking to join an early-stage startup, and make a huge impact. You should be deeply passionate about great visual design and building awesome product experiences, and have the experience to back this up.

Requirements

• 5+ years of experience in product design, with a strong portfolio showcasing polished, user-centric interfaces and product experiences across web and mobile
• Familiarity with concepts, paradigms and emerging design patterns in AI-focused products and services
• Strong systems thinking, with ability to create scalable, reusable design patterns with attention to detail across both visual and UX
• Strong proficiency in industry-standard design tools such as Figma, Photoshop and Illustrator, as well as interaction design tools such as Rive and Jitter
• Experience using emerging tools to communicate your vision and ideas as interactive prototypes, using tools such as Cursor, Claude Code or Figma Make
• Strong understanding of the contemporary landscape of frontend tooling and frameworks, with experience to back this up

What you’ll do

• Work as part of our newly formed Product Design team, working alongside our engineering team and Founder-CEO
• Design core software interfaces, and features that integrate generative AI into real world product experiences
• Play a key role in defining our foundational UX for a game-changing commerce builder solution
• Contribute and support our overarching brand design and early product marketing efforts, including our marketing site and pitch material

What we offer

• Competitive salary
• Remote working
• Quarterly team get-togethers
• Access to the latest tools and services (no legacy software or MS Teams here!)

How we hire

• Initial call with our Founder-CEO (30 mins)
• Complete a take home exercise (2-4 hours)
• Task review, and meet with the broader product team for 2-way interview (1 hour)
• Offer stage (including reference checks)

To apply, please send your portfolio, resume and a brief intro describing your interest to: careers@colossal.fm

Extra information

Status

Open

Education Level

Secondary School

Location

United Kingdom

Type of Contract

Full-time jobs

Published at

05-03-2026

Profession type

Design / Fashion

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English