Senior Voice & Video Platform Software Engineer

Nextiva is building a cutting-edge Voice and Video Platform to power its Unified Communications (UCaaS) and Contact Center (CCaaS) solutions, serving over 100,000 businesses globally. This cloud-native, carrier-grade platform is central to the Nextiva Unified-CXM suite, delivering seamless voice, video, and messaging with 99.999% uptime and compliance with top security standards (HIPAA, SOC 2, GDPR).

We're seeking a Software Engineer with deep real-time communications expertise to help design and evolve this mission-critical platform. You'll work with technologies like WebRTC and SIP to build scalable, low-latency systems for call signaling, media streaming, and processing. The role involves full lifecycle ownership—from design and development to deployment and monitoring—within a fast-paced, agile team.

Ideal candidates are inventive engineers passionate about real-time media, distributed systems, and VoIP/telecom protocols. You'll collaborate closely with cross-functional teams and use automation and AI-assisted tools to deliver high-quality, reliable software. This role reports to the Senior Engineering Manager for the Voice & Video Platform Team within Nextiva's Product & Technology organization.

Key Responsibilities

• Voice/Video Service Development: Design and maintain core services for voice and video calling, including call control, routing, conferencing, and recording using WebRTC and SIP. Ensure low-latency, high-volume performance.
• Real-Time Media Processing: Build and optimize audio/video streaming components using RTP, codecs (Opus, G.711, H.264), and DSP techniques like echo cancellation and jitter buffering to deliver high-quality communications.
• Platform Integration & Performance: Extend open-source telephony frameworks within a microservices architecture. Optimize system performance across networking, OS, and code layers to meet strict latency and throughput goals.
• Cloud-Native Infrastructure: Develop resilient, cloud-native services with active-active failover, high availability, and zero-downtime deployments using Docker, Kubernetes, and CI/CD pipelines.
• Feature Innovation & AI Integration: Collaborate on advanced features like smart call routing, video conferencing, and AI-powered voice agents, transcription, and sentiment analysis—built with scalability, security, and compliance in mind.
• Quality & Automation: Own testing and quality with comprehensive unit/integration tests, CI pipelines, and AI-assisted tools. Simulate edge cases and stress conditions to ensure reliability.
• Cross-Team Collaboration: Work with Network Engineering, UCXM, Contact Center, and SRE teams to integrate telecom infrastructure and expose APIs/SDKs for client applications. Support troubleshooting for key customers when needed.
• DevOps & On-Call: Contribute to infrastructure automation, monitor service health, and participate in on-call rotations to resolve production issues and continuously improve system reliability.
• Documentation & Knowledge Sharing: Maintain clear technical documentation and share expertise through tech talks, postmortems, and mentoring. Stay current on real-time communications trends and bring innovations to the team.

Success in this role is measured by delivering a highly reliable, scalable, and high-quality voice/video platform with five-nines uptime, excellent media performance, and timely feature delivery—empowering seamless, AI-enhanced communication experiences for customers.

Qualifications

• Education: Bachelor's in Computer Science, Engineering, or related field required; Master's in networking or distributed systems is a plus. Equivalent experience in real-time communications also considered.
• Real-Time Communications: 5+ years in VoIP/video systems with strong expertise in WebRTC and SIP. Deep understanding of signaling flows, SDP, ICE, STUN/TURN, and DTLS-SRTP.
• Programming Skills: Proficient in C/C++ with multithreading and performance tuning. Experience with Go/Java for microservices and Python/Bash for automation is a plus.
• Networking & Protocols: Strong grasp of TCP/UDP, TLS, DNS, and media codecs (Opus, G.729, H.264). Familiarity with SIP proxies, media servers, PBX systems, and PSTN integration is valuable.
• Scalability & Reliability: Experience building distributed, fault-tolerant systems using cloud platforms (AWS/GCP/Azure), Docker, and Kubernetes. Skilled in designing for high availability and active-active failover.
• Media & DSP: Knowledge of DSP techniques (echo cancellation, jitter buffering), media quality tuning, and video optimization (e.g., SFU architecture) is a plus.
• Security & Compliance: Understanding of VoIP security (TLS, SRTP, authentication) and compliance standards (HIPAA, GDPR, PCI). Able to design secure, privacy-conscious systems.
• Collaboration & Communication: Strong communicator and team player with Agile experience. Comfortable owning features end-to-end and working cross-functionally.
• Adaptability & Learning: Passion for staying current with RTC, cloud, and AI trends. Eager to experiment, learn, and improve continuously.

Preferred:

• Experience in telecom, UCaaS, or CCaaS environments.
• Contributions to open-source RTC projects.
• Interest in AI/ML for call optimization or developer productivity.
• Relevant certifications (e.g., AWS, CCNP, voice tech).

Why Join Nextiva's UCXM Platform Engineering Team?

• Build the Future of Business Communication: Your code will power millions of calls and meetings, directly impacting how businesses connect.
• Tackle Complex Challenges: Solve real-time, distributed systems problems at scale—low latency, global reach, and high fidelity.
• Deliver Carrier-Grade Reliability: Learn to build systems with 99.999% uptime, mastering quality, resilience, and observability.
• Work with Modern Tech: Use a global, cloud-native stack (Kubernetes, microservices, C/C++, real-time media) with zero-downtime deployment practices.
• Thrive in a Collaborative Culture: Join a skilled, supportive team that values innovation, knowledge sharing, and continuous improvement.

Nextiva DNA (Core Competencies)

Nextiva's most successful team members share common traits and behaviors:

• Drives Results: Action-oriented with a passion for solving problems. They bring clarity and simplicity to ambiguous situations, challenge the status quo, and ask what can be done differently. They lead and drive change, celebrating success to build more success.
• Critical Thinker: Understands the "why" and identifies key drivers, learning from the past. They are fact-based and data-driven, forward-thinking, and see problems a few steps ahead. They provide options, recommendations, and actions, understanding risks and dependencies.
• Right Attitude: They are team-oriented, collaborative, competitive, and hate losing. They are resilient, able to bounce back from setbacks, zoom in and out, and get in the trenches to help solve important problems. They cultivate a culture of service, learning, support, and respect, caring for customers and teams.

Total Rewards

Our Total Rewards offerings are designed to allow our employees to take care of themselves and their families so they can be their best, in and out of the office.

Our compensation packages are tailored to each role and candidate's qualifications. We consider a wide range of factors, including skills, experience, training, and certifications, when determining compensation. We aim to offer competitive salaries or wages that reflect the value you bring to our team. Depending on the position, compensation may include base salary and/or hourly wages, incentives, or bonuses.

• Medical - Medical insurance coverage is available for employees, their spouse, and up to two dependent children with a limit of 500,000 INR, as well as their parents or in-laws for up to 300,000 INR. This comprehensive coverage ensures that essential healthcare needs are met for the entire family unit, providing peace of mind and security in times of medical necessity.
• Group Term & Group Personal Accident Insurance - Provides insurance coverage against the risk of death / injury during the policy period sustained due to an accident caused by violent, visible & external means.
  • Coverage Type - Employee Only
  • Sum Insured - 3 times of annual CTC with minimum cap of INR 10,00,000
  • Free Cover Limit - 1.5 Crore
• Work-Life Balance ️ - 15 days of Privilege leaves per calendar year, 6 days of Paid Sick leave per calendar year, 6 days of Casual leave per calendar year. Paid 26 weeks of Maternity leaves, 1 week of Paternity leave, a day off on your Birthday, and paid holidays
• Financial Security - Provident Fund & Gratuity
• Wellness ‍ - Employee Assistance Program and comprehensive wellness initiatives
• Growth - Access to ongoing learning and development opportunities and career advancement

At Nextiva, we're committed to supporting our employees' health, well-being, and professional growth. Join us and build a rewarding career!

Established in 2008 and headquartered in Scottsdale, Arizona, Nextiva secured $200M from Goldman Sachs in late 2021, valuing the company at $2.7B.To check out what's going on at Nextiva, check us out on Instagram, Instagram (MX), YouTube, LinkedIn, and the Nextiva blog.

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