Staff Backend Engineer, Voices

Synthesia is the world’s leading AI video platform for business, used by over 90% of the Fortune 100. Founded in 2017, the company is headquartered in London, with offices and teams across Europe and the US. As AI continues to shape the way we live and work, Synthesia develops products to enhance visual communication and enterprise skill development, helping people work better and stay at the center of successful organizations. Following our recent Series E funding round, where we raised $200 million, our valuation stands at $4 billion. Our total funding exceeds $530 million from premier investors including Accel, NVentures (Nvidia's VC arm), Kleiner Perkins, GV, and Evantic Capital, alongside the founders and operators of Stripe, Datadog, Miro, and Webflow. About the role You will work on the core systems powering Synthesia’s script preview and voice generation experience , ensuring users can reliably generate high-quality voiceovers across a wide range of languages, providers, and use cases. You will build and operate backend services that orchestrate multiple text-to-speech (TTS) providers , alongside Synthesia’s in-house models, delivering a seamless and consistent experience t