Security Engineer

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 are seeking a Security Engineer with a strong software engineering and DevOps background to enhance our engineering team. This role combines security, compliance, and DevSecOps to ensure our infrastructure is secure, compliant, and efficiently managed. As a key member of the Information Security group, you will maintain and enhance our established compliance programs while driving security excellence across our engineering organization. This role combines hands‑on technical and deep compliance expertise to ensure continued customer trust as we scale.

Your Impact

• Architect, implement, and manage security across our cloud infrastructure, applications, and data.
• Collaborate with engineering teams to embed secure coding, automated testing, and hardened architecture into the development lifecycle.
• Implement security tools aligned with architectural strategy and apply them consistently.
• Secure AWS, GCP, and other cloud environments for web, API, database, and mobile services.
• Rapidly evaluate and contribute to POCs for new security technologies.
• Conduct code reviews, automate security testing, and support incident response.
• Lead security documentation and awareness efforts across the company.

What You Bring

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.

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