Senior Software Engineer, Infrastructure

New York, NY

About the role

About Sandbar Sandbar is an interface company in New York City. We aim to augment individuals in an agentic world—to think, act, and move 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 new human-agent interface—a private voice ring and conversational computer. Stream has been featured in WSJ, Bloomberg, & Wired, and begins shipping in Summer '26. Join us in creating a new interface for self augmentation. 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 Unlimited PTO and sick time Early stage equity

About Sandbar

Creating Stream, a self-extension for building ideas, and Stream Ring, the mouse for voice.

Other roles at Sandbar

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Job details

Salary

$160,000 - $220,000

Location

New York, NY

Company

NameSandbar
IndustryBusiness/Productivity Software
Team Size2

Funding

Total raised

$23M

Last stage

Seed

Investors

True Ventures
Upfront Ventures
BBetaworks
AAdjacent
Kindred Ventures

Founders

Mina Fahmi

Mina Fahmi

Co-Founder & CEO

LinkedIn
Kirak Hong

Kirak Hong

Co-Founder & CTO

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.