Principal Product Designer: AI & Agentic Workflows
Remote-first in the UK.
The company
We’re partnering with a 250-person SaaS scale-up that has rebuilt its product around AI. Its agent is already live with customers and AI is now the company’s core product strategy - not an additional feature.
The role
Reporting directly to the VP of Product, the Principal Product Designer will become the design counterpart to the engineering architect - defining how agentic workflows and traditional SaaS interfaces come together as one coherent product.
This is a hands‑on player–coach role with the influence of an early‑stage design leader, backed by the customers and resources of an established scale‑up. You’ll set the design direction, support a team of five designers and personally lead the hardest product challenges.
You'll
- Define the interaction architecture and design patterns across the product
- Design the most complex experiences yourself, prototyping and shipping in code (Claude Code, Cursor)
- Lead critique and raise the bar for a team of five designers
- Partner with Product, Engineering and leadership on direction
You've
- Spent 10+ years in product design, including several operating at Staff or Principal level
- Designed complex AI products at a top‑tier SaaS company
- Shipped genuinely agentic workflows - not just standalone AI features
- Set design direction across an entire product, beyond your own product area
- They have a very high bar and have never lost out on exceptional talent because of salary constraints, so this won’t be a blocker.
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Principal Product Designer - Agentic Workflows employer: Zest Search
Join a dynamic and innovative AI-native consumer business in London, where you'll have the opportunity to shape product strategy and lead a high-performing team in a fast-paced environment. With a strong focus on employee growth and collaboration, this company offers competitive salaries, meaningful equity, and a culture that values hands-on leadership and direct engagement with customers. As part of a rapidly growing organisation backed by substantial funding, you'll be at the forefront of exciting product development while working closely with experienced founders.
