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Synthesia

Senior Research Engineer – Interactive Avatars

Synthesia

. Adapt diffusion models to incorporate conditioning signals such as audio, motion, and interaction cues .

Posted 10/9/2026full-timeLondon • United KingdomSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in machine learning, particularly in diffusion models and computer vision, with a strong ability to develop and implement innovative solutions that enhance video quality and interactivity. Proficient in Python and PyTorch, with a commitment to producing clean, maintainable code and a strong publication record in relevant research areas.

Highest-signal resume keywords
Machine Learning ExpertiseDiffusion Models DevelopmentProficient In PythonHands-On Experience With PyTorchStrong Publication Record

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Machine LearningDiffusion ModelsComputer VisionPython ProgrammingPyTorchVersion ControlModel Development PipelineData PreparationModel DesignEvaluation Frameworks
Soft Skills
Detail-OrientedOutcome-DrivenClear Communication
Tools & Technologies
GitModern ML Frameworks
Industry Keywords
Interactive AgentsVideo Diffusion ModelsWorld ModelsAudio-Conditioned ModelsVideo DiT Architectures

Tech Stack

Tools & technologies
PythonPyTorch

About the role

Key responsibilities & impact
  • Adapt diffusion models to incorporate conditioning signals such as audio, motion, and 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 contextual reactions
  • Improve lip-sync accuracy, motion realism, and visual quality in video diffusion models
  • Build robust evaluation frameworks and test suites for continuous quality tracking
  • Collaborate with the data team to define data needs and ensure high-quality datasets
  • Stay current with research in world models, interactive human/agent modeling, diffusion models, and related areas
  • Turn breakthrough research ideas into product capabilities
  • Develop models that ship and impact solutions used by businesses worldwide

Requirements

What you’ll need
  • 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
  • Up-to-date knowledge of recent advances in diffusion models
  • Proficient in PyTorch and familiar with modern ML frameworks and tooling
  • Strong Python engineering skills
  • Confidence with git and version control
  • Commitment to clean, maintainable research code
  • Ability to own and execute the listed responsibilities
  • Outcome-driven, detail-oriented, and motivated to push state-of-the-art research into product impact
  • Clear communication of hypotheses, experiments, and results
  • Experience with audio-conditioned video diffusion models and deep knowledge of recent video DiT architectures
  • Ability to own the full model development pipeline end to end, from data preparation to model design, training, and evaluation
  • Strong publication record in areas such as world models, interactive agents, or video diffusion models
  • Willingness to answer whether Synthesia sponsorship is required to continue or extend work authorization

Benefits

Comp & perks
  • Attractive compensation
  • Hybrid work setting with an office in London, Zurich, and Munich
  • 25 days of annual leave + public holidays
  • Option to join regular planning and socials at company hubs
  • Generous referral scheme
  • Strong opportunities for career growth