Synthesia is seeking a Senior Full Stack Engineer to join their innovative team working on AI video generation. The role involves contributing to both the React client application and Python backend, with opportunities to shape product direction and own long-term projects. Key responsibilities include end-to-end development, project ownership, collaboration with product managers, and data-driven feature evaluation. The ideal candidate has 5+ years of software engineering experience, preferably in a high-performing team at scale, with deep knowledge in parts of the stack and strong alignment with commercial success. Synthesia offers a remote-friendly environment with hubs in major European cities, competitive salary, and stock options. The company values ownership, outcome-focused work, simplicity, and making the journey fun.