Principal Software Engineer

This is where your work makes a difference.At Baxter, we believe every person—regardless of who they are or where they are from—deserves a chance to live a healthy life. It was our founding belief in 1931 and continues to be our guiding principle. We are redefining healthcare delivery to make a greater impact today, tomorrow, and beyond.Our Baxter colleagues are united by our Mission to Save and Sustain Lives. Together, our community is driven by a culture of courage, trust, and collaboration. Every individual is empowered to take ownership and make a meaningful impact. We strive for efficient and effective operations, and we hold each other accountable for delivering exceptional results.Here, you will find more than just a job—you will find purpose and pride. Role SummaryThe Principal Software Engineer (Mobile) is a hands‑on technical leader responsible for the design, development, and evolution of mobile applications supporting both iOS and Android platforms using React Native with a background insecure voice calling.Key ResponsibilitiesLead 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, verification, and validation documentation using JAMA.Perform rigorous code reviews and champion mobile engineering best practices.Mentor engineers and raise the overall quality and consistency of mobile development.Support production readiness, monitoring, troubleshooting, and issue resolution in live healthcare environments.Required QualificationsBachelor’s degree in Computer Science, Software Engineering, or a related discipline and 5+ years of professional software engineering experience, including significant mobile application development experience.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.Preferred QualificationsHands-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.Baxter is committed to supporting the needs for flexibility in the workplace. We do so through our flexible workplace policy which includes a required minimum number of days a week onsite. This policy provides the benefits of connecting and collaborating in-person in support of our Mission. The flexible workplace policy is subject to local laws and legal requirements. At its discretion, Baxter may decide to adjust, suspend, or discontinue as business needs change. We understand compensation is an important factor as you consider the next step in your career. At Baxter, we are committed to equitable pay for all employees, and we strive to be more transparent with our pay practices. The estimated base salary for this position is $120,000 to $165,000 annually. The estimated range is meant to reflect an anticipated salary range for the position. We may pay more or less than of the anticipated range based upon market data and other factors, all of which are subject to change. Individual pay is based on upon location, skills and expertise, experience, and other relevant factors. This position may also be eligible for discretionary bonuses. For questions about this, our pay philosophy, and available benefits, please speak to the recruiter if you decide to apply and are selected for an interview.Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time.#LI-OM1US Benefits at Baxter (except for Puerto Rico)This is where your well-being matters. Baxter offers comprehensive compensation and benefits packages for eligible roles. Our health and well-being benefits include medical and dental coverage that start on day one, as well as insurance coverage for basic life, accident, short-term and long-term disability, and business travel accident insurance. Financial and retirement benefits include the Employee Stock Purchase Plan (ESPP), with the ability to purchase company stock at a discount, and the 401(k) Retirement Savings Plan (RSP), with options for employee contributions and company matching. We also offer Flexible Spending Accounts, educational assistance programs, and time-off benefits such as paid holidays, paid time off ranging from 20 to 35 days based on length of service, family and medical leaves of absence, and paid parental leave. Additional benefits include commuting benefits, the Employee Discount Program, the Employee Assistance Program (EAP), and childcare benefits. Join us and enjoy the competitive compensation and benefits we offer to our employees. For additional information regarding Baxter US Benefits, please speak with your recruiter or visit our Benefits site: Benefits | BaxterEqual Employment OpportunityBaxter is an equal opportunity employer. Baxter evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, protected veteran status, disability/handicap status or any other legally protected characteristic.Know Your Rights: Workplace Discrimination is IllegalReasonable AccommodationsBaxter is committed to working with and providing reasonable accommodations to individuals with disabilities globally. If, because of a medical condition or disability, you need a reasonable accommodation for any part of the application or interview process, please click on the link here and let us know the nature of your request along with your contact information.Recruitment Fraud NoticeBaxter has discovered incidents of employment scams, where fraudulent parties pose as Baxter employees, recruiters, or other agents, and engage with online job seekers in an attempt to steal personal and/or financial information. To learn how you can protect yourself, review our Recruitment Fraud Notice.SummaryLocation: Raleigh, North Carolina; Deerfield, Illinois; Palm Beach Gardens, FLType: Full time