Staff Engineer, Machine Learning

About the role You will own multiple features for our new Interactive Agents product, a two-way conversational video platform to practice conversations and improve team performance, unlocking scalable learning and coaching experiences. This role will involve working directly with LLMs, prompt engineering, fine‑tuning for real use cases and building associated ML infrastructure. This is a true end‑to‑end position working on real agentic AI solutions. You will work directly with the product manager responsible for your project, meaning that you will be expected to ideate and focus on the commercial problem that you're solving, and you will have the opportunity to shape the direction of the product. You will evaluate your own work, leveraging our data pipeline and frameworks that we have established to understand the impact your features have on our commercial objectives and pivoting where necessary. You will consider the long‑term direction of the team, making sure that we are developing the engineering capabilities that will allow us to stay ahead of the challenges we are likely to encounter in 6‑12 months' time. What we're looking for: At least seven (7) years of experience as a software engineer, at least 3 on the staff level. You have experience in a high‑performing engineering team that is operating at scale. This could come from a scale‑up environment or a more established organisation recognised for building and shipping with a great engineering culture. An ability to work across the stack, with deep knowledge on server side, Machine Learning and all things back end related. BE only experience is OK. Relevant engineering experience for a team building an enterprise‑grade SaaS product, delivering agentic systems to enhance customer experience. Strong alignment with commercial success. Previous leadership experience of smaller teams is a plus. Other important info: This is a remote role from an EU country, UK or Switzerland. The salary starts at EUR/GBP/CHF 120.000 base + stock option plan. This is full‑time employment only - no contractors possible - usually through OysterHR. Everyone at Synthesia gets 25 days of leave + local holidays. We only sponsor VISA if you are in the UK/EU country already and need support - we do not relocate people. #J-18808-Ljbffr Synthesia