Founding Go-to-Market

Founding GTM

Salary: £120k-£150k + Equity

Company Description

Lightfern Ltd is a London-based AI startup founded in 2025 by an elite team from OpenAI, Attio, and OakNorth Bank. They are redefining digital communication by building an AI assistant that learns and replicates a user’s unique voice, moving beyond generic templates to preserve authentic human connection across all platforms.

Job Description

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.

Location

London, UK

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.

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.

The ideal candidate

• 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.