Senior Software Engineer, Infrastructure

Sandbar Infrastructure EngineerSandbar is an interface company in New York City. We aim to augment individuals so we can each think, act, and move more freely. Our team has built SW, ML, and HW products across Meta, CTRL-labs, Google, Apple, Fitbit, Peloton, and Equinox.Our first product, Stream, is a self extension—a private voice ring and conversational interface. Stream has been featured in WSJ, Bloomberg, & Wired, and begins shipping in Summer '26.Join us in creating technology that extends human thinking.About the RoleWe're looking for an experienced infrastructure engineer to help build Stream, a new conversational interface. You will be responsible for developing a highly scalable real-time production service with various steps of ML and data processing. You'll work closely with other mobile and firmware engineers to deliver the foundations for new human-computer interactions.ResponsibilitiesArchitect a high-uptime, low-maintenance, and reliable distributed inference systemLead observability and oncallAchieve very low latency & jitter with attention to P99 performanceDevelop a safe rollout to production process in partnership with ML, SW, and mobile engineersImplement data pipelines for user-facing features and internal toolingQualificationsProficient in Python and JavascriptExperience in shipping consumer facing interactive real-time services2+ years owning a live production system in a small team, for large N of users2+ years working in a big infra teams (Google / Meta / etc)Technical leadership for building a robust process with the teamStrong ownership on healthy live serviceFTE BenefitsHealth, vision, and dental benefitsCompany-sponsored 401(k)Unlimited PTO and sick timeEarly stage equity