Senior Software Engineer, Infrastructure

Sandbar

New York City, NYFull-time$160–220K/yrPosted 8mo agoStill listed 3 days ago

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At a glance

Compensation

$160–220K/yr

Location

New York City, NY

Schedule

Full-time

Work Authorization

Not specified

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Job overview

Sandbar, an interface company in New York City, seeks an experienced infrastructure engineer to develop a highly scalable real‑time production service for its Stream conversational interface. The role involves building distributed inference systems, ensuring low latency, and collaborating with mobile, firmware, and ML engineers to deliver robust human‑computer interaction foundations.

Skills & qualifications

RequiredNice to have

Skills

PythonJavascriptReal‑Time ServicesInfrastructureTechnical Leadership

Qualifications

2+ Years Owning Live Production System2+ Years Working in Big Infra Teams

Benefits

Medical Insurance

401(k) Match

Paid Time Off

Full job description

About Sandbar Sandbar 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 We’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.

Responsibilities

Architect a high-uptime, low-maintenance, and reliable distributed inference system
Lead observability and oncall
Achieve very low latency & jitter with attention to P99 performance
Develop a safe rollout to production process in partnership with ML, SW, and mobile engineers
Implement data pipelines for user-facing features and internal tooling

Qualifications

Proficient in Python and Javascript
Experience in shipping consumer facing interactive real-time services
2+ years owning a live production system in a small team, for large N of users
2+ years working in a big infra teams (Google / Meta / etc)
Technical leadership for building a robust process with the team
Strong ownership on healthy live service

FTE Benefits

Health, vision, and dental benefits
Company-sponsored 401(k)
Unlimited PTO and sick time
Early stage equity

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