About Sandbar

Sandbar is an interface company in New York City. We aim to bridge gaps, to better navigate the world around & inside each of us. Our north star is self extension.

Our team has built consumer products across Meta, CTRL-labs, Google, Apple, Fitbit, Peloton, and Equinox.

Our first product, Stream, is a new way to capture thoughts—a private voice ring and conversational notepad.

Stream has been featured in WSJ, Bloomberg, Fast Company, and Wired, and begins shipping in Summer '26.

About

We’re looking for a senior machine learning engineer to help build Stream, a new conversational interface. As a senior machine learning engineer, you will develop a system which spans actions, memory, and voice, with a deep focus on the end-user experience and human-computer interaction.

Responsibilities

• Lead architecture, strategy, and tradeoffs for our ML-based products

• Design and improve user-facing model-based experiences, including real-time actions, dialogue, and, memory.

• Develop infrastructure to rapidly develop, evaluate, and deploy models

• Optimize inference pipelines for latency, reliability, and concurrency

• Work closely with other ML/AI engineers, infrastructure engineers, designers, and cofounders on existing and future products

Qualifications

• 6+ years in machine learning experience

• Experience shipping ML-based products is required

• Experience in large-language model evaluation and post-training is required

• Experience in audio / voice ML is a plus

• Comfortable writing production-grade software

• Passion for human-computer interaction

• Experience setting technical direction and driving execution with multidisciplinary teams

FTE Benefits

• Health, vision, and dental benefits

• Unlimited PTO and sick time

• Early stage equity

Compensation Range: $170K - $240K