Senior Mobile App Engineer (React Native)

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

Job summary

Beacon Biosignals is transforming precision medicine for the brain with at-home EEG platforms and wearables. As a Senior Mobile App Engineer you will build cross‑platform React Native apps for iOS and Android, shaping how patients and clinicians capture data and participate in trials.

You will own UX, performance, and reliability, collaborate across Devices and Platform teams, and help define the roadmap forBeacon's mobile platform, while thriving in a primarily remote, async work environment.

Qualifications

• 8+ years of mobile development experience, shipping production React Native apps for iOS and Android.
• Strong TypeScript skills, familiarity with React Native, Expo, and GitHub.
• Experience with app state management, offline-first data handling and release processes.
• Product mindset with focus on UX, edge cases, and performance.

Responsibilities

• Lead development of React Native mobile applications for iOS and Android.
• Design UX workflows for clinical trial participants and at-home diagnostics.
• Own app performance, reliability, and observability based on user feedback.
• Integrate device capabilities with native iOS/Android code and BLE devices.
• Collaborate with Devices, Platform teams and product designers to align with the mobile roadmap.

Skills

React Native

TypeScript

Expo

GitHub

BLE integration

Swift or Kotlin

Open source contributions

Clinical trials apps

Tools

Swift

Kotlin

iOS SDK

Android SDK

BLE SDKs

Job description

Senior Mobile App Engineer (React Native)

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 App Engineer, you'll help power Beacon's mission by building the cross-platform React Native apps that patients and clinicians use with our EEG headbands and other wearables. Your work will shape how people capture high-fidelity data and how easily they move through clinical trials and at-home diagnostics.

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 React Native mobile applications across iOS and Android.
• Design and implement UX workflows for clinical trial participants and at-home diagnostic patients.
• Own the user experience, performance, reliability, and observability of the apps and features you build, using feedback from real users across diverse use cases and environments.
• Work with engineers on our native iOS and Android BLE device SDKs to integrate device capabilities cleanly into the app.
• Partner with our Devices team, other Platform teams, and product designers to build user-centric mobile capabilities deeply integrated with the rest of Beacon's product ecosystem.
• Help shape the roadmap and technical direction of our mobile platform.

In your first 3–6 months, you might:

• Build a new in-app feature to validate EEG signal quality before data capture.
• Streamline onboarding for new patients and trial participants to make our devices easier to use than ever.
• Deploy new features that help our Clinical Operations team track compliance.
• Improve app performance, release reliability, and crash/telemetry visibility across our Expo-based build pipeline.

What you will bring

You'll be a great fit if you have:

• 8+ years of experience in mobile development, including substantial experience shipping and maintaining production React Native apps on both iOS and Android.
• Strong TypeScript skills and familiarity with our stack (React Native, Expo, GitHub).
• Experience with app state management, offline-first data handling, and app store release processes.
• A product mindset: you care deeply about UX, edge cases, and performance.
• Strong communication skills and comfort working in a collaborative, async environment.
• Integrated BLE peripheral devices into iOS and/or Android applications, or worked with sensor integration or health data streams.
• Written native code (Swift or Kotlin) or built native modules for React Native.
• Worked with medical devices, EEG, or wearables.
• Worked on apps for clinical trials, patients, or another regulated environment.
• Contributed to open source mobile or React Native 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.

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey.Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiringprocess or thereafter. Any information that you do provide will be recorded and maintained in aconfidential file.

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.