Principal Software Engineer

Baxter is seeking a hands-on Principal Software Engineer (Mobile) to help shape the architecture and evolution of mobile applications that support healthcare-focused real-time communication. This onsite role in Raleigh, NC combines React Native engineering with secure voice calling and real-time communications integration across both iOS and Android.

In this position, you will lead technical direction for the Mercury mobile apps, improve reliability and functional consistency between platforms, and partner closely with cross-functional teams across engineering, product, QA, cybersecurity, regulatory, and backend systems.

Key Responsibilities

• Lead the architecture, development, and enhancement of Mercury mobile applications using React Native for iOS and Android.
• Design and implement secure voice calling capabilities across iOS and Android.
• Integrate Mercury mobile applications with real-time communications services.
• Address mobile voice concerns including call signaling, session lifecycle, audio routing, connectivity changes, permissions, notifications, background behavior, and call reliability.
• Ensure functional parity and a consistent user experience across both mobile platforms.
• Collaborate with backend, web, UX, QA, cybersecurity, regulatory, and product stakeholders.
• Design and implement integrations using REST APIs, WebSockets, SignalR, and real-time voice communication technologies.
• Apply HIPAA-aligned security practices for data handling, authentication, voice communications, messaging, and notifications.
• Participate in Agile development ceremonies and work tracking using JIRA and Confluence.
• Contribute to design controls, requirements traceability, and verification and validation documentation using JAMA.
• Perform rigorous code reviews and champion mobile engineering best practices.
• Mentor engineers to raise the overall quality and consistency of mobile development.
• Support production readiness, monitoring, troubleshooting, and issue resolution in live healthcare environments.

Required Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or related discipline, plus 5+ years of professional software engineering experience with significant mobile application development.
• Proven expertise with React Native and modern JavaScript/TypeScript development.
• Strong experience developing for both iOS and Android platforms.
• Strong experience integrating mobile applications with backend systems using REST APIs and real-time communication technologies.
• Experience designing or supporting mobile voice calling, VoIP, WebRTC, or comparable real-time communications functionality.
• Experience with mobile audio behavior, call state management, operating-system permissions, push notifications, and background execution.
• Experience working in regulated environments, preferably healthcare or life sciences.
• Proficiency with GitHub, PostgreSQL at the application consumption or interaction layer, and collaborative development workflows.

Technologies

• React Native, JavaScript, TypeScript, iOS, Android
• REST APIs, WebSockets, SignalR
• HIPAA
• JIRA, Confluence, JAMA
• GitHub, PostgreSQL
• VoIP, WebRTC

Preferred Qualifications

• Hands-on experience integrating mobile applications with real-time communications platforms.
• Experience with WebRTC, SIP, VoIP, media sessions, call signaling, or voice gateway integrations.
• Experience building secure communication, clinical communication, messaging, or alerting applications.
• Familiarity with iOS and Android native audio, telephony, push notification, and background-processing APIs.
• Experience troubleshooting real-time voice quality, connectivity, latency, reconnection, and device compatibility issues.
• Familiarity with mobile deployment pipelines, release management, and mobile application lifecycle management.
• Understanding of healthcare workflows, clinical environments, nurse call, patient-care communications, or medical-device integrations.
• Experience collaborating with UX design using Figma.
• Experience leading technical designs, architecture reviews, and cross-functional engineering initiatives.

Success Profile

• Courage
• Action Oriented
• Collaborates
• Cultivates Innovation
• Manages Ambiguity
• Drives Results

Benefits

• Medical and dental coverage that start on day one
• Insurance coverage for basic life, accident, short-term and long-term disability, and business travel accident insurance
• Employee Stock Purchase Plan (ESPP) with ability to purchase company stock at a discount
• 401(k) Retirement Savings Plan (RSP) with options for employee contributions and company matching
• Flexible Spending Accounts
• Educational assistance programs
• Paid holidays
• Paid time off ranging from 20 to 35 days based on length of service
• Family and medical leaves of absence
• Paid parental leave
• Commuting benefits
• Employee Discount Program
• Employee Assistance Program (EAP)
• Childcare benefits
• Support for Parents
• Continuing Education/ Professional Development
• Employee Health & Well-Being Benefits
• Paid Time Off
• 2 Days a Year to Volunteer

Location: Raleigh, NC (onsite) | Compensation: USD 120,000 - 165,000 per year