Founding Product Marketer - Lithos Ai

Unusual Ventures•San Francisco, CA

About The Position

Lithos is hiring its first marketer to establish the company’s marketing foundation for its agentic inference product. The role will set product positioning and messaging for AI developers and engineering leaders building agents and customer-facing AI features where speed matters. It will identify likely buyers and the communities and channels that reach them, then turn benchmark results and customer successes into a clear story. This is a hands-on, early-stage role that combines strategy with execution. The marketer will create or shape technical content, raise the profile of Lithos and its founders, run product launches and events, and build materials used by the founders and founding account executive in sales. They will also track which channels and messages generate usage and pipeline and focus effort on what works. The position is one of Lithos’s first ten hires, with meaningful early equity.

Requirements

At least 4 years of product marketing experience for a technical product sold to developers or engineering teams.
Technical depth sufficient to explain latency, throughput, and cost per token, read product documentation, run a quick benchmark, and communicate effectively with engineers.
Experience at an early-stage startup building the marketing function or a substantial part of it.
Ability to set direction independently and work as the sole marketer for a period.
Excellent writing skills, including the ability to make technical ideas clear, specific, and interesting.
Interest in remaining hands-on and building rather than managing a team immediately.

Nice To Haves

Experience in AI infrastructure, cloud, developer platforms, or data infrastructure.
Experience marketing inference, GPU cloud, model APIs, or agent tooling.
Experience launching an open-source or developer-first product.
An engineering background.

Responsibilities

Own positioning and messaging for AI developers and engineering leaders building agents and customer-facing AI features where speed matters.
Turn benchmark results and customer wins into a memorable story.
Identify the best buyers, where they spend their time, and what motivates them to try new products; use these findings to focus marketing.
Create or shape technical blog posts, benchmark write-ups, launch announcements, documentation pages, case studies, and customer videos.
Arrange conference, podcast, panel, and community opportunities for the founders, and prepare talks and posts for them.
Plan and deliver product launches, and work with partners and investors on developer meetups and executive dinners.
Build the pitch, website copy, competitive positioning, and customer-facing materials used by the founders and founding account executive.
Track which channels and messages generate usage and pipeline, and invest more effort in what works.