Product Engineer

Versey; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

EMI options

Job summary

Versey, a London-based writing editor startup, is seeking a frontend engineer to help build a high-performance writing space with AI agents. You will work across Next.js, TypeScript and Tailwind to deliver a polished, reliable product.

You will tackle syncing, local-first design, live collaboration between humans and AI, and agent orchestration, shipping features end-to-end from idea to production. Expect a fast-paced, craft-focused environment with opportunities to contribute to writing itself.

Qualifications

• Experience building high-performance writing interfaces.
• Strong sense for interaction design and craft.
• Familiarity with AI-assisted workflows and agent orchestration.

Responsibilities

• Build a beautifully crafted, high-performance writing space you can be proud of.
• Solve problems across syncing, local-first, high reliability, live collaboration amongst humans and AI, and agent orchestration.
• Define and ship features end-to-end, from idea to production
• Speak to customers and use analytics to inform product decisions
• Design and implement AI-native editor interactions (inline suggestions, version tracking)
• Join an early team and influence product and engineering culture
• Have time for writing yourself

Skills

Product instincts

Design sensibilities

Interaction quality

Generative AI

Tools

Next.js

TypeScript

Tailwind

LangGraph

AI Agents

Vercel

Job description

London, UK (Monument – 3 days in person)

Stack

Next.js, TypeScript, Tailwind, Supabase, LangGraph, AI Agents

Salary range

£90,000–£130,000 + EMI options (flexible for exceptional candidates)

What is Versey?

Versey is a modern writing editor, and a thinking partner for serious writers.

It was designed in collaboration with over 50 writers including the Director of teaching at Newmark School of Journalism.

We don't believe AI should think and write for you, but help you explore ideas, research and think.

Our app is a minimalist, local-first editor with an integrated AI agent that is only ever a few keystrokes away - think Cursor, but for writing.

Our team

We are a small London-based team.

Our team was among Focal's 2024 top 1% of European startups and has been recognised by the Europa awards as one of the 100 hottest startups.

The same team previously built the high-craft feedback tool workflow.design .

Our founder has two prior exits, inc. 1 acquisition and 1 sale to PE, having built one of the largest on-demand platforms in the UK.

We've raised a $3m pre-seed.

Funds

Venrex (Revolut, JustEat), 8VC (Asana), Form Venture, Tiny Supercomputer, Kima Ventures, Combination Ventures, Circle & Co, Better Angle.

Sequoia, Index, A16z, Octopus.

Pareto20, Channel 4 Ventures, ex-Managing Director Google UK, Managing Partner at London's leading applied AI fund Forward Partners.

Speed and judgement

We aim to stay competitive in terms of work-rate with leading SF-based startups. We skew towards experienced generalists, we're not well-suited for long ramp-ups or learning on the job.

Enthusiasm for craft and writing

You should care about great writing, fiction, non-fiction, essays, whatever gets you going.

Strong relationships

We want people who communicate clearly, read the room (high emotional intelligence), and are a pleasure to build alongside.

We expect to stay a small team.

What you'll do at Versey.

• Build a beautifully crafted, high-performance writing space you can be proud of - and use.
• Solve a range of problems across syncing, local-first, high reliability, live collaboration amongst humans and AI, and agent orchestration.
• Contribute to agentic workflows built with LangGraph and modern reasoning models
• Define and ship features end-to-end, from idea to production
• Speak to customers and use our analytics to help make product decisions
• Design and implement AI-native editor interactions (inline suggestions, version tracking, structured "Skills")
• Join an early team - influencing product, engineering culture and company direction
• Have time for writing yourself

Are you a good fit for this role?

You'll likely recognise yourself in the following:

• Strong product instincts and design sensibilities
• Care deeply about interaction quality and craft - a fan of tools like Linear, Notion and Superhuman.
• Interested in generative AI and how to integrate it responsibly

An exceptional candidate might have:

• Done some writing before - blogs, essays
• Experience with text editing interfaces such as ProseMirror and Tiptap
• Experience with local-first
• Experience with LLMs and agentic systems or orchestration frameworks in production

Our stack

Frontend

Next.js 16+, TypeScript, Tailwind v4

AI orchestration

LangGraph

Infrastructure

Vercel