Design Engineer

Design Engineer Cartesia Software Engineering, Design San Francisco, CA, USA USD 180k-250k / year + Equity Posted on Feb 3, 2026 Apply now Location •HQ - San Francisco, CA Employment Type Full time Location Type On-site Department Engineering Compensation $180K - $250K • Offers Equity 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 Cartesia is hiring a Design Engineer to work on React design systems and product polish on our web surfaces. Your Impact Own the appearance of our web-based surfaces, with high agency to proactively fix design and performance issues. Design and implement UI features from scratch. Work on last-mile polish, making sure every pixel counts. Develop and maintain a React design system intended to multiply product engineering velocity. Build a process that enables Cartesia to proactively identify gaps & opportunities in the design of its web surfaces. What You Bring 2+ years of experience Exceptional at both design and engineering Ability to spot pixel-level imperfections in digital interfaces; on the engineering side Proficient in TypeScript, with a focus on writing well-typed, maintainable code Portfolio (website or social profile) showcasing design engineering work Perfectionism in the fundamentals: last-mile polish, clear copy, accessibility, and web performance Experiencing developing and maintaining React-based design systems from scratch Nice-to-Haves Experience working with shadcn/ui, Radix Primitives, or Base UI Experience optimizing React interfaces to minimize renders, possibly with profiling tools like React Scan 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.

Compensation Range:

$180K - $250K Apply now See more open positions at Cartesia