Principal Software Engineer - VolP

Job description

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. Your Role at Baxter This is where your work saves lives We're seeking a Principal (Senior) Software Engineer to lead the architecture and evolution of the audio and video communication infrastructure powering our Connected Care products. In this highly visible role, you'll own mission-critical systems that enable seamless, real-time communication experiences for healthcare professionals, patients, and caregivers. This is more than a telecom engineering role—it's an opportunity to build scalable, high-performance communication platforms that directly support better healthcare outcomes. You'll leverage deep expertise in VoIP, SIP, and real-time media technologies to deliver highly available, ultra-low latency solutions while helping shape the future of connected healthcare. What You'll be doing As a technical leader, you will: Architect and evolve the core audio and video communication infrastructure that powers our Connected Care ecosystem. Design and operate highly available SIP routing platforms supporting real-time communications at scale. Scale and optimize media servers, Session Border Controllers (SBCs), and signaling environments to ensure exceptional reliability and performance. Build intelligent, low-latency call routing solutions that deliver seamless communication experiences. Partner with software engineering teams to integrate voice and video capabilities into modern applications and services. Investigate and resolve complex real-time communication challenges, including media quality issues, packet loss, latency, and network performance. Drive technical strategy and establish engineering best practices for voice and video infrastructure. Mentor engineers across the organization and serve as a subject matter expert in telecom and real-time communications technologies. What you'll bring 5+ years of experience developing and supporting real-time voice and video communication systems. Deep hands-on expertise with SIP and related telecommunications protocols. Strong experience building and operating VoIP platforms in production environments. Production-level experience with Kamailio or FreeSWITCH . Experience developing backend services using .NET or Node.js/TypeScript . Ability to troubleshoot complex network, signaling, and media delivery challenges. Preferred Qualifications Experience developing call-routing logic and automation using LUA . Hands-on experience with WebRTC , STUN/TURN, and browser-based audio/video communications. Familiarity with Asterisk platforms and deployments. Strong ANSI C knowledge for low-level debugging, media processing, and infrastructure optimization. Advanced proficiency with Node.js and TypeScript . Why Join Us? Own and influence the communication platform strategy behind innovative Connected Care products. Work on technologies that directly impact clinicians, caregivers, and patients around the world. Tackle complex engineering challenges within real-time communications, networking, and distributed systems. Collaborate with talented cross-functional teams driving the next generation of healthcare technology. Make a meaningful impact while growing your technical leadership as a Principal Engineer. If you're passionate about building world-class voice and video communication systems and want your work to improve healthcare experiences at scale, we'd love to hear from you. Baxter is committed to supporting the needs for flexibility in the workplace. We do so through our flexible workplace policy which includes a minimum of 3 days a week onsite. This policy provides the benefits of connecting and collaborating in-person in support of our Mission. 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-MS1 US 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 | Baxter Equal Employment Opportunity Baxter 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 Illegal Reasonable Accommodations Baxter 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 Notice Baxter 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 .