Senior Software Engineer, Backend (Voice Platform)

At Cresta, the Voice Platform team is on a mission to transform real-time voice infrastructure and contact center automation through AI-powered backend systems. As a Senior Software Engineer, you’ll be responsible for designing, scaling, and operating the distributed services that power Cresta’s voice ecosystem. You’ll drive major initiatives in areas such as SIP and WebRTC support, multilingual and translation pipelines, and real-time conversation intelligence. Responsibilities include: Lead the design and development of scalable, distributed backend microservices in Golang (with some Python for AI-related services). Drive initiatives to expand platform capabilities, including bi-directional SIP, WebRTC integrations, multilingual support, advanced transcription, and real-time translation. Improve observability, reliability, and self-service troubleshooting across the platform. Collaborate with cross-functional teams to design end-to-end solutions.