Founding GTM (£120k-£150k + Equity) at Lightfern Ltd

Job Title

Founding GTM

£120k-£150k + Equity

Lightfern Ltd is a London-based AI startup founded in 2025 by an elite team from OpenAI, Attio, and Oak North 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.

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.

London, UK

• 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 Eleven Labs 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.

• 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.

• 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.