Staff Product Engineer, iOS

Sandbar; New York (NY); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Health, vision, and dental benefits

Company-sponsored 401(k)

Unlimited PTO and sick time

Early stage equity

Job summary

Sandbar in New York City is seeking a senior iOS product engineer to assist in building Stream, a new conversational interface. This role encompasses product delivery, including architecture and optimization practices. Ideal candidates will have extensive experience in developing interactive iOS applications, particularly in Swift, and will collaborate with various teams for a unified user experience.

The role offers comprehensive health benefits, company-sponsored 401(k), unlimited PTO and sick time, alongside early-stage equity options.

Qualifications

• 8+ years building and shipping interactive mobile (iOS) applications.
• Strong proficiency in Swift and complex interactive app development.
• Deep experience in OS-level integrations such as media control or on-device ML.

Responsibilities

• Own iOS product delivery—including architecture (Swift), metrics-driven optimization, testing, and releases.
• Work closely with backend services (Websocket) and device integrations (BLE) for low-latency, always-available human-computer interactions.
• Work with product, design, and GTM to ship releases, gather insights, iterate, and improve our experiences for end-users.

Skills

Swift

Interactive mobile applications

OS-level integrations

Python

Interdisciplinary communication

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 a senior iOS product engineer to help build Stream, a new conversational interface. The Stream iOS app touches every aspect of our user experience; including device‑cloud connectivity, on‑device processing, UIUX, and more. You’ll work closely with design, firmware, and backend engineers to create a technically rigorous experience that ultimately feels simple.

Responsibilities

• Own iOS product delivery—including architecture (Swift), metrics‑driven optimization, testing, and releases
• Work closely with backend services (Websocket) and device integrations (BLE) for low‑latency, always‑available human‑computer interactions
• Work with product, design, and GTM to ship releases, gather insights, iterate, and improve our experiences for end‑users

Qualifications

• 8+ years building and shipping interactive mobile (iOS) applications
• Strong proficiency in Swift and complex interactive app development.
• Deep experience in OS‑level integrations such as media control or on‑device ML
• Experience in Python‑based servers and the iOS Bluetooth stack are a plus
• Strong interdisciplinary communication
• Strong ownership, comfort with ambiguity, and technical output
• Passion for end‑user delight and human‑computer interfaces

FTE Benefits

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