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

About Beacon Biosignals Beacon's AI platform for brain data enables and accelerates new treatments that transform the lives of patients with neurological and psychiatric disease. Through FDA-cleared EEG wearables, novel machine learning algorithms, enormous datasets, and advances in software engineering, we are changing the way patients are treated for disorders of the brain. Want to join the team? We’re hiring—check out the careers page on our website for more. Please be advised that Beacon Biosignals does not ask for personal information outside of our official hiring process. If a role is not listed on our careers page, it is not an active job opening. We will never ask candidates to send money to supplement company equipment, and all official emails from our team will come from the @beacon.bio domain, never text messages or Teams messages.

Beacon Biosignals

Our mission is to improve human health by enabling rapid, targeted interventions through advanced brain analytics.

B

beacon.bio

51-200 employees

Artificial Intelligence

Boston, MA

2019

Privately Held

17k LinkedIn followers

Raised $127M

• 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.
• 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.

Required

• 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.

Preferred

• 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.

• Equity
• Paid Time Off