Founding Product Marketer
About Cartesia
Our mission is to build the next generation of AI: ubiquitous, interactive intelligence that runs wherever you are. Today, not even the best models can continuously process and reason over a year-long stream of audio, video and text—1B text tokens, 10B audio tokens and 1T video tokens—let alone do this on-device.
We're pioneering the model architectures that will make this possible. Our founding team met as PhDs at the Stanford AI Lab, where we invented State Space Models or SSMs, a new primitive for training efficient, large-scale foundation models. Our team combines deep expertise in model innovation and systems engineering paired with a design-minded product engineering team to build and ship cutting edge models and experiences.
We're funded by leading investors at Index Ventures and Lightspeed Venture Partners, along with Factory, Conviction, A Star, General Catalyst, SV Angel, Databricks and others. We're fortunate to have the support of many amazing advisors, and 90+ angels across many industries, including the world's foremost experts in AI.
About the role:
We’re hiring a Founding Product Marketer to define how Cartesia shows up in the world: shaping our launches, driving adoption, and establishing us as the #1 platform for building voice agents. This is a great opportunity to join at the ground level and build product marketing from scratch at one of the most exciting companies in AI. You’ll own how we tell our story and how we engage developers and enterprises.
This role calls for someone who is both strategic and creative. You’ll translate complex technical concepts into clear, compelling narratives while experimenting with bold ideas, organic growth tactics, and community-driven campaigns. You’ll work directly with the founders, Product, and GTM teams, with the chance to grow into a leadership role as we scale.
Your Impact:
Own and run product launches, ensuring customers and the broader market clearly understand new features and updates
Work closely with Product and GTM teams to translate technical features into clear value propositions for both developer and enterprise customers
Drive initiatives to increase product adoption, including onboarding flows, in product messaging, and user education content
Create high quality collateral including website copy, whitepapers, sales enablement materials, case studies, blog posts, etc
Develop and maintain personas, messaging frameworks, and positioning across all product lines
Conduct competitive intelligence and translate insights into clear positioning and differentiated narratives
Partner with Product and GTM teams and work directly with customers to cultivate feedback loops and use them to shape roadmap and messaging
Ensure content is optimized for discoverability and engagement to align with growth marketing initiatives
Contribute to GTM efforts with sales enablement support (e.g., adapting messaging for customer conversations), while keeping the primary focus on outward-facing storytelling
What You Bring:
4–8 years of experience in product marketing, brand strategy, growth, or a related function at a high-growth tech company. B2B infrastructure or developer-facing product experience is strongly preferred; consumer tech backgrounds with exceptional taste and product intuition are equally valued.
An exceptional writer and narrative thinker. You can take a messy, half-formed technical idea and produce something that makes a developer or a product executive immediately understand why it matters. Portfolio or writing samples required.
Strong product intuition. You go deep on technical architecture, sit in product reviews, and have real opinions about what to build and how to position it. You're a peer to the product team, not a downstream recipient of their decisions.
Demonstrable taste and creative judgment. You can look at a landing page, pitch deck, or launch post and immediately identify what's generic, what's sharp, and what needs to change. You have a point of view — and you're willing to defend it.
High autonomy and a bias toward shipping. You own projects end-to-end, from insight through execution, and you're comfortable getting your hands dirty on operational work in a fast-moving, ambiguous environment.
Skilled at lossy compression. You can listen to a founder talk for 20 minutes, pull out the one sentence that matters, and make it land for an audience that wasn't in the room.
A strong cross-functional collaborator who has worked closely with product, engineering, sales, and design — and can translate fluently between technical and commercial audiences.
Fluent with AI tools. You use them to accelerate production work so you can focus your time on judgment, taste, and strategy.
Nice to Have
Experience building competitive intelligence systems, sales enablement libraries, or launch playbooks from scratch.
Background at a company known for exceptional brand and product narrative — Stripe, Linear, Figma, Vercel, or similar.
Experience marketing developer-facing, infrastructure, or generative AI products, or cultivating developer communities.
What We Offer
🍽 Lunch, dinner and snacks at the office
🏥 Fully covered medical, dental, and vision insurance for employees
🏦 401(k)
✈️ Relocation and immigration support
🦖 Your own personal Yoshi
Our Culture
🏢 We’re an in-person team based out of San Francisco. We love being in the office, hanging out together, and learning from each other every day.
🚢 We ship fast. All of our work is novel and cutting edge, and execution speed is paramount. We have a high bar, and we don’t sacrifice quality or design along the way.
🤝 We support each other. We have an open & inclusive culture that’s focused on giving everyone the resources they need to succeed.