Startups · AI

Software Engineer, Character Platform & Tools

Sesame AI · San Francisco · On-site

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About Sesame AI

Sesame builds personal agents for curious people. Follow a thought. Work out an idea. Discover something new. Preview available now on iOS. Coming to intelligent eyewear in 2027. Backed by Sequoia and Redpoint.

About the role

The best platforms don't just support a workflow — they transform who can participate in it. At Sesame, we're building lifelike, personal, voice-first, agents. Their quality comes from a tight collaboration between engineers, ML researchers, and the creative professionals who define the personality of the agents.

What they're looking for

  • 4+ years experience building internal tools with a strong sense of UI/UX
  • Experience working with ML research teams
  • Proficiency with modern web development stacks (React/Next.js, Python/FastAPI)
  • Experience with cloud infrastructure (GCP/Kubernetes)
  • Strong sense of reliability and knowing when to build vs. borrow
  • Knowledge of security and privacy best practices
More about this role

Sesame believes in a future where computers are lifelike - with the ability to see, hear, and collaborate with us in ways that feel natural and human. With this vision, we're designing a new kind of computer, focused on making voice agents part of our daily lives. Our team brings together founders from Oculus and Ubiquity6, alongside proven leaders from Meta, Google, and Apple, with deep expertise spanning hardware and software. Join us in shaping a future where computers truly come alive.

The best platforms don't just support a workflow — they transform who can participate in it. At Sesame, we're building lifelike, personal, voice-first, agents. Their quality comes from a tight collaboration between engineers, ML researchers, and the creative professionals who define the personality of the agents.

This role requires full-stack engineering experience with a focus on the internal tooling and platforms that power our agent research pipeline. We're looking for engineers who are excited to build the systems that enable and accelerate that collaboration.

You'll architect and develop the internal platforms that take our team from raw data to fully-realized agents — evaluating quality...

Read the full posting on Sesame AI's site ↗

Machine Learning

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