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Staff Research Engineer - Interactive Avatars

Synthesia· Research and Development
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RemoteFull-timePosted 7mo ago

About the role

Staff Research Engineer focusing on avatar-centric interactive video diffusion models within the Interactive Avatars Team, shaping research into real product capabilities used by tens of thousands of businesses.

Responsibilities

  • Adapt diffusion models to incorporate diverse conditioning signals (e.g., audio, motion, interaction cues).
  • Develop methods for streaming infinitely long video sequences at real-time rates.
  • Work on the perceptual layer of interactive agents, including understanding user audio and generating appropriate contextual reactions.
  • Improve lip-sync accuracy, motion realism, and overall visual quality in video diffusion models.
  • Build robust evaluation frameworks and test suites to enable continuous quality tracking.
  • Collaborate closely with our data team to define data needs and ensure high-quality datasets.
  • Stay up to date with research in world models, interactive human/agent modeling, diffusion models, and related areas.

Qualifications

  • Strong ML (e.g., diffusion, GANs, VAEs) and computer vision background with relevant industry experience.
  • Hands-on experience with diffusion models (ideally avatar-centric or video-focused) and up to date with recent advances.
  • Proficient in PyTorch and familiar with modern ML frameworks and tooling.
  • Strong Python engineering skills, confident with git and version control, and a commitment to clean, maintainable research code.
  • Outcome-driven, detail-oriented, and motivated to push state-of-the-art research into real product impact.
  • Clear communicator of hypotheses, experiments, and results.

Skills

Required:Machine Learning (diffusion, GANs, VAEs)PyTorchPythonDiffusion models (avatar-centric/video-focused)Communication

Benefits

  • Competitive compensation (salary + stock options + bonus)
  • Hybrid work setting with an office in London, Amsterdam, Zurich, Munich, or remote in Europe
  • 25 days of annual leave + public holidays
  • Great company culture with the option to join regular planning and socials at our hubs
  • + other benefits depending on your location
Last updated Jul 22, 2026. Interested? Apply on the company site.

About Synthesia

#1 AI Video Platform for Business

Synthesia is a #1 AI Video Platform for Business. Our AI Video Generator enables anyone to create professional videos without mics, cameras, actors, or studios. Using AI, we’re radically changing the process of video content creation, making it scalable and affordable while maintaining high quality.

AI Video GeneratorAI Video PlatformCorporate VideoCustom AvatarsLanguagesLocalizationTraining VideosVideo Production
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