Principal Software Engineer - VolP

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.

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.

• 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.

• 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 Free SWITCH
  .
• Experience developing backend services using .NET or Node.js/Type Script .
• Ability to troubleshoot complex network, signaling, and media delivery challenges.

• 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 Type Script .

• 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.

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…