Product Engineer, Surfaces

Join to apply for the Product Engineer role at Cartesia

Get AI-powered advice on this job and more exclusive features.

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.

We're hiring a Product Engineer to advance our mission of building real-time multimodal intelligence.

• Be the driving force behind new products, taking them from concept to launch with a focus on professional‑grade utility and smooth user onboarding
• Translate the latest AI research into practical, high‑performance products
• Design and implement intuitive interfaces that make frontier AI capabilities accessible
• Prototype and launch new AI‑driven products and experiences
• Work closely with our customers to make sure they're successful
• You’ll have significant autonomy to shape our products and directly impact how cutting‑edge AI is applied across various devices and applications.

• Technical leadership with the ability to execute and deliver zero‑to‑one results amidst ambiguity.
• You have an eye for new product experiences and opportunities and can envision how to make novel AI experiences a reality.
• Strong full‑stack engineering skills enable you to rapidly prototype and iterate on ideas from end to end, and later, build them for scale and to last.
• You’re comfortable diving into new technologies and can quickly adapt your skills to our tech stack (Go and Python on the backend, Next.js for the frontend)
• You have a great design sense and can create intuitive user interfaces (Figma skills are a plus!)
• You’re good at working with customers and translating their feedback into great product experiences.

🏢 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.

Entry level

Full‑time

Engineering and Information Technology

Software Development