Staff Machine Learning Engineer - VoIP Infrastructure

As a Staff Machine Learning Engineer - VoIP Infrastructure you will:

• Contribute to the design, development and implementation of VoIP infrastructure, telephony platforms, and observability features that power AI-driven voice workloads
• Collaborate with engineering, Product, and infrastructure teams to ensure our voice and AI platforms perform efficiently, scale reliably, and integrate seamlessly across SIP/RTP, Kamailio, RTPEngine, and related telecom systems.
• Contribute to the continuous improvement of the SRE practice by turning operational telephony and AI workload use cases into requirements for software tooling.
• Contribute to the execution of deployment and support activities for VoIP systems and AI/ML developers operating in production voice environments.
• Build high-quality, clean, scalable and reusable code by enforcing best practices around software engineering architecture and processes (Code Reviews, Unit testing, etc.).
• Work with product owners to understand detailed requirements and own your code from design, implementation, test automation, and delivery — spanning both telephony infrastructure and LLM integration layers.
• Experience integrating LLMs into voice platforms and real-time communication systems.
• Be a mentor for colleagues and help promote knowledge-sharing across telecom and AI engineering disciplines.

To be successful in this role you have:

• Hands-on experience building VoIP systems using SIP/RTP protocols;
• Practical knowledge of Kamailio, RTPEngine, FreeSWITCH, SBCs, and PSTN systems (or similar);
• Working knowledge of PSTN infrastructure and telecom protocols;
• Experience integrating applications on top of LLMs (using existing models, not building them);
• Experience in prompt engineering and developing LLM based features
• 4+ years of development experience with Python, GoLang, Java or similar languages.
• 4+ years of experience operating highly available distributed workloads on Kubernetes following a DevOps approach.
• Working experience building distributed systems with cloud-native software;
• Experience with software-defined networking, infrastructure as code and configuration management;
• Experience with DevOps tooling (e.g. Helm / Ansible / Kubernetes / Prometheus /Splunk/ GitLab CI) is considered an asset
• Experience building software for compliance and security in regulated environments is considered an asset
• 4+ years of experience with infrastructure and platform operations, deployments, SRE, and DevOps with a continued focus on improving Platform health is considered an asset

For positions in this location, we offer a base pay of $176,100 - $308,200, plus equity (when applicable), variable/incentive compensation and benefits. Sales positions generally offer a competitive On Target Earnings (OTE) incentive compensation structure. Please note that the base pay shown is a guideline, and individual total compensation will vary based on factors such as qualifications, skill level, competencies, and work location. We also offer health plans, including flexible spending accounts, a 401(k) Plan with company match, ESPP, matching donations, a flexible time away plan and family leave programs. Compensation is based on the geographic location in which the role is located and is subject to change based on work location.