Principal Engineer, AI

Job Description Position: Principal Engineer AI Systems & Telephony Infrastructure Location: About Movius At Movius, we address one of the most critical challenges companies face enabling secure, compliant, and efficient communication between employees and clients over voice and messaging. We are the global leader in Secure Communication as a Service (SCaaS). Our flagship solution, MultiLine, streamlines communication workflows, ensures compliance, and unifies cross-channel messaging. Movius AI-powered solutions help businesses build strong, lasting customer relationships through company-controlled, secure systems. Welcome to Phone 3.0. Headquartered in Alpharetta, GA, with offices in Silicon Valley, Bangalore, New York, and London, Movius partners with global telecom leaders such as T-Mobile, Vodafone, TELUS, BT, Singtel, and others. To learn more, visit www.movius.ai. Your Opportunity We are looking for a Principal Engineer with 1012 years of hands-on experience in backend engineering, architecture, AI systems integration, and telephony infrastructure. You will take complete ownership of the engineering and delivery lifecycle for AI-powered Speech and Voice products, ensuring scalability, reliability, and high performance. This role is ideal for an experienced technologist who enjoys building large-scale, real-time systems and collaborating with AI/ML, Product, and DevOps teams to deliver production-grade voice AI solutions. What You'll Do - Architect and lead development of scalable backend platforms for AI voice and messaging agents. - Integrate CPaaS platforms and telephony systems (Asterisk, FreeSWITCH). - Build real-time streaming pipelines connecting ASR (speech recognition), TTS (text-to-speech), and LLM (natural language generation) components. - Lead a small backend engineering team while collaborating with AI scientists and cloud engineers. - Oversee deployment, monitoring, and optimization of voice AI systems on AWS/GCP/Azure. - Implement best practices for CI/CD, observability, and API governance. - Drive architecture discussions and long-term technology strategy aligned with product goals. What You Bring - 1012 years of backend development experience (Node.js, Python, or Go) with strong architecture and design skills. - Proven expertise in real-time systems, microservices, WebSockets, and message brokers (Kafka, Redis Streams, etc.). - Hands-on experience with telephony protocols (SIP, RTP) and CPaaS platforms; exposure to Asterisk/FreeSWITCH is a plus. - Solid understanding of integrating AI/NLP components LLMs, ASR/TTS engines, and vector databases. - Strong knowledge of security, compliance, and observability in production systems. - Experience with Docker, Kubernetes, and CI/CD toolchains. - Proven track record of delivering end-to-end AI/Voice solutions in live environments. Desirable Skills - Familiarity with Agentic AI frameworks or orchestrating autonomous AI agents. - Experience with vector databases (Pinecone, Weaviate, FAISS) and RAG architectures. - Knowledge of real-time analytics and performance monitoring (Prometheus, Grafana, etc.). Why Join Movius - Play a leadership role in shaping next-generation AI + Voice solutions with real-world impact across domains such as telephony, logistics, and customer engagement. - Work directly with executive and product leadership while staying technically hands-on. - Be part of a collaborative, innovation-driven culture with access to modern AI toolchains and infrastructure. Ready to build the future of reliable, secure, and intelligent communication Apply now at www.movius.ai