Join Lightfern Ltd as our first GTM hire to build a product-led growth engine from 0-1. You will own the full acquisition funnel, experiment with marketing campaigns, and shape the brand voice. Transitioning from PLG to enterprise, you will bridge individual user love into team-wide adoption for category-defining AI communication tools.
Founding GTM at Lightfern Ltd
Join Lightfern Ltd as their first GTM hire and lead the 0-1 growth engine for a category-defining AI communication tool. Founded by veterans from OpenAI and Attio, Lightfern Ltd builds AI that masters your unique voice—moving beyond generic templates to preserve human connection. With a cult following at companies like ElevenLabs and a £120k-£150k salary plus equity, this London-based role offers total ownership of the PLG motion. If you're a scientific marketer who loves storytelling and high-growth environments, help us redefine how the world connects.
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Location
London, United Kingdom
Compensation
£120k-£150k + Equity
Company
Lightfern Ltd
Role overview
Hi! We’re Lightfern.
We have a simple thesis: communication is about both conveying a message and building human connection between individuals. Most AI writing tools misunderstand this and solely optimise for the first point. The result is the erosion of people’s authentic voices across all platforms.
Lightfern adapts your voice for any situation, with two flagship features.
- Ultracomplete works using the world’s best autocomplete model, trained in-house.
- Inline Composer allows you to query, re-write, and edit from the comfort of your draft.
Both features nail greetings, sign-offs, nicknames, and even facts from three months ago, using context from previous emails to understand your needs and your voice. Together, they’re wrapped in a sleekly designed product with great UX.
Don’t take our word for it - users call Lightfern “the closest thing to telepathy I’ve experienced with an AI tool.” GTM teams at companies like ElevenLabs and leading founders rely on it daily. User retention is strong and we’re already building a cult following.
Email is just the beginning. Lightfern is redefining an entire category. We want to be in every communication layer, bridging contexts and amplifying people’s individuality and voice.
We have the team to do it – we come from OpenAI, Imperial College London, Attio, OakNorth Bank, ex-YC startups. Now we need a cracked person to spread awareness and get millions of people using us.
What you will do
- Own the end-to-end self-serve acquisition funnel, scaling top-of-funnel demand through social, content, and partnerships while systematically optimizing activation and conversion.
- Design and execute data-driven growth experiments to refine the PLG motion and identify high-intent signals for enterprise expansion.
- Craft compelling brand narratives and high-quality content that builds trust with professionals, while representing the company globally through live demos and user engagement.
Who this is a fit for
- Has 3+ years of experience in senior GTM or growth marketing roles, with a proven track record of building or scaling PLG motions at high-growth startups.
- Demonstrates exceptional storytelling and writing skills, capable of producing persuasive copy for everything from cold outreach to complex product landing pages.
- Possesses a scientific, analytical mindset to hypothesize and test growth strategies, combined with a genuine passion for talking to users and translating feedback into product improvements.
Why this role is remarkable
- Founding-level impact as the first dedicated GTM hire, with full ownership over the growth function and strategy for a category-defining AI product.
- Work alongside an elite technical team with backgrounds from OpenAI, Imperial College London, and Y-Combinator, building a product already relied upon by ElevenLabs and leading founders.
- Join a culture of high standards and intellectual curiosity, offering a competitive salary and significant equity upside in a venture tackling the fundamental challenge of authentic digital communication.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Lightfern Ltd wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.