Senior Mobile Engineer, BLE & Device Connectivity (iOS/Android)

Beacon-Biosignals; Boston, New York (MA, NY); Hybrid; USD 150,000 - 190,000; Full time

Job summary

Beacon Biosignals is seeking a Senior Mobile Engineer to own the native iOS/Android BLE connectivity for EEG headbands and wearables. You will ensure robust data capture across phones, OS versions, and environments, partnering with the Devices team on firmware interfaces and delivering clean, testable native modules for React Native.

The role emphasizes reliability, edge-case handling, and collaboration in a remote-friendly, async culture with in-person hubs in Boston and New York.

Qualifications

• 8+ years of mobile development experience (iOS and/or Android).
• Hands-on BLE device integration in production apps (pairing, reconnection, background operation, throughput).
• Experience with sensor data from wearables or health devices.

Responsibilities

• Lead development of native iOS and Android BLE SDKs.
• Own connectivity reliability, data throughput, and battery performance across devices and OS versions.
• Collaborate with Devices team on firmware interfaces and GATT profiles.
• Expose device capabilities to React Native apps via native modules.
• Own device connectivity telemetry and diagnose failure modes using user feedback.
• Help shape the roadmap and technical direction of the mobile platform.

Skills

Swift

Kotlin

BLE integration

React Native

TypeScript

Native module development

Telemetry / observability

Open source contributions

Tools

Core Bluetooth

Android BLE APIs

GitHub

Expo

Job description

Senior Mobile Engineer, BLE & Device Connectivity (iOS/Android)

Beacon Biosignals is transforming precision medicine for the brain, from clinical development to clinical care. For Life Sciences partners, we offer the leading at-home EEG platform for clinical development of novel therapeutics for neurological, psychiatric, and sleep disorders. Our Diagnostics business is building the most comprehensive at-home platform for precision diagnostics, combining EEG and cardiopulmonary signals to deliver reimbursable assessments for sleep and central nervous system disorders. Together, we're changing the way patients are diagnosed and treated for any disorder that affects brain physiology.

As a Senior Mobile Engineer focused on device connectivity, you'll help power Beacon's mission by building the native iOS and Android BLE layer that connects our EEG headbands and other wearables to the apps patients and clinicians rely on. Your work will determine how reliably we capture high-fidelity data in homes, clinics, and trial sites.

This isn't just another app. You'll build tools that help unlock insights into neurological, psychiatric, and sleep disorders, with the potential to improve lives at scale.

Beacon's robust asynchronous work practices ensure a first-class remote work experience, and we also have in-person office hubs in Boston and New York. For this position we will consider candidates based anywhere in the US Eastern time zone.

What success looks like

As part of our small, mission-driven Mobile Apps Team, you will:

• Lead development of our native iOS and Android BLE device SDKs.
• Own connection reliability, data throughput, and battery performance for device communication across a wide range of phones, OS versions, and real-world environments.
• Partner closely with our Devices team on firmware interfaces, GATT profiles, and device behavior.
• Expose device capabilities to our React Native applications through clean, well-tested native modules.
• Own the observability of device connectivity, using telemetry and field feedback from real users to find and fix failure modes.
• Help shape the roadmap and technical direction of our mobile platform.

In your first 3–6 months, you might:

• Improve BLE pairing and reconnection reliability across both iOS and Android.
• Increase streaming robustness for EEG data, including recovery from dropped connections and backgrounding.
• Build the device-side support for a new in-app feature that validates EEG signal quality before data capture.
• Add diagnostics that help our Clinical Operations team troubleshoot device issues in the field.

What you will bring

You'll be a great fit if you have:

• 8+ years of experience in mobile development, with extensive native experience on iOS (Swift) and/or Android (Kotlin).
• Hands-on experience integrating BLE peripheral devices into production mobile apps, including pairing/bonding, reconnection, background operation, and data throughput (e.g., Core Bluetooth, Android BLE APIs).
• Experience with sensor integration or streaming health data from wearables.
• A rigorous approach to reliability: you care about edge cases, device fragmentation, and performance.
• Strong communication skills and comfort working in a collaborative, async environment.
• Built production React Native apps, or written native modules for React Native or Expo.
• Worked with TypeScript and our broader stack (React Native, Expo, GitHub).
• Worked with medical devices, EEG, or wearables.
• Worked on apps for clinical trials, patients, or another regulated environment.
• Contributed to open source mobile or BLE projects.

The salary range for this role is $150,000 – $190,000. Salary ranges are determined using current market compensation data for this role and adjusted based on experience, skills, and location. The base salary is one component of the total compensation package, which includes equity, PTO, and other benefits.

At Beacon, we've found that cultural and scientific impact is driven most by those that lead by example. As such, we're always seeking new contributors whose work demonstrates an avid curiosity, a bias towards simplicity, an eye for composability, a self-service mindset, and - most of all - a deep empathy towards colleagues, stakeholders, users, and patients. We believe a diverse team builds more robust systems and achieves higher impact.

As set forth in Beacon Biosignals’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection.As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measurethe effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categoriesis as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.