Staff iOS Engineer

Sandbar; New York (NY); On-site; USD 180,000 - 260,000; Full time

Job summary

Sandbar, an interface company in New York City, is seeking a staff iOS product engineer to help build Stream, a private voice ring that extends thinking. You will own the iOS product delivery, collaborating across design, firmware, and backend teams to create a rigorous, yet simple user experience.

The role focuses on architecture, on-device ML, and OS-level integrations, with responsibilities spanning backend and device communication to shipping high-quality updates 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.

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

iOS development

OS-level integrations

Communication

Ownership & ambiguity tolerance

Tools

WebSocket

BLE

Python

Bluetooth stack

Job description

Sandbar is an interface company in New York City. We aim to expand human thinking. Our team has built software, ML, hardware, and consumer products across Meta, CTRL-labs, Apple, Peloton, and Equinox.

Our first product is Stream, is private voice ring that extends your thinking. Stream has been featured in WSJ, Bloomberg, Wired, and Time's Best Inventions of the Year.

Join us in creating technology that extends human thinking.

About

We're looking for a staff 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