Cartesia · 11 hours ago
Product Engineer Intern
San Francisco, CA
Internship
Onsite
InternCartesia is pioneering the next generation of AI with a focus on interactive intelligence. They are seeking a Product Engineer Intern to build and ship high-impact, model-powered experiences in collaboration with various teams, driving product activation and user engagement.
Artificial Intelligence (AI)Real TimeSoftware
Responsibilities
Ship developer-first growth surfaces by combining user insights, data, and first-principles thinking
Bring Cartesia’s latest models to market by rapidly building high-performance interfaces and flows that help users discover, evaluate, and adopt them
Instrument and analyze key metrics (e.g., sign-up → first call, time-to-first-production-use, feature adoption) and iterate based on real user behavior
Communicate publicly about your work via Cartesia’s official channels as well as your own profiles
Collaborate cross-functionally with GTM, model serving, research, and product to craft surfaces that grow Cartesia and multiply our work
Help identify and reduce friction across the user journey—from first touch on the website to successful integration in production
Qualification
Required
Currently pursuing a degree in Computer Science, Engineering, or a related field, with at least one previous internship or substantial project experience in software development
Proficient in TypeScript, with experience building modern web applications using React or a similar framework
Comfortable working across the stack; some backend experience in Python or Go with a focus on APIs
Evidence of shipping and iterating on a user-facing product in a fast-moving environment (internships, side projects, hackathons, open-source, or startup experience)
Deep intuition for what makes a great developer experience—clear docs, intuitive APIs, and fast, reliable interfaces
Curiosity about product metrics and experimentation; you're excited to use data and user feedback to guide what you build
You're a little unhinged
Preferred
Experience building or instrumenting growth surfaces such as sign-up flows, pricing pages, dashboards, or docs
Familiarity with analytics and experimentation concepts (e.g., event tracking, A/B testing, funnels)
Experience building voice agents or voice-enabled applications
Active online presence on X/Twitter, LinkedIn, or a personal blog showcasing projects, writing, or developer-focused work
Company
Cartesia
Cartesia provides real-time multimodal intelligence for all devices.
Founded in 2023
11-50 employees
H1B Sponsorship
Cartesia has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (6)
2024 (2)
Funding
Current Stage
Early StageTotal Funding
$86MKey Investors
Kleiner PerkinsIndex Ventures
2025-03-11Series A· $64M
2024-12-12Seed· $22M
Leadership Team
Karan Goel
Founder / CEO
Arjun Desai
Co-Founder
Recent News
2026-01-22
South China Morning Post
2025-11-26
Company data provided by crunchbase