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Software Engineer

Netflix - 1d ago

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Senior Software Engineer

Reddit - 4d ago

Senior Applied Research Engineer - Video

Requirements

  • Strong experience training deep learning models at scale
  • Strong Python and PyTorch skills
  • Hands-on experience with diffusion models (image domain required; video preferred)
  • Experience with large scale multi-GPU / multi-node training
  • Good understanding of distributed training (DDP, FSDP, DeepSpeed or similar)
  • Ability to design controlled experiments and interpret noisy results

Nice to Haves

  • Experience with video diffusion models
  • Experience in avatar or human-centric generation
  • Familiarity with world / interactive models
  • Experience with GANs or VAEs
  • Experience optimizing inference systems for production

What You'll Be Doing

  • Developing and scaling latent video diffusion models tailored for human-centric video generation
  • Designing conditioning mechanisms to improve control (pose, emotion, script, camera) without sacrificing fidelity
  • Advancing distributed training strategies (DDP, FSDP, DeepSpeed, sequence parallelism) under real compute constraints
  • Improving training stability at multi-node scale
  • Designing rigorous evaluation frameworks combining automated metrics and structured human evaluation
  • Optimizing inference for low latency, high resolution, and cost efficiency
  • Running controlled ablations and experiments to drive high-signal modeling decisions
  • Contributing to high engineering standards: reproducibility, experiment tracking, CI/CD, monitoring

Perks and Benefits

  • Build production-scale video foundation models in a fast-growing Generative AI company
  • Work on human-centric video generation with real-world impact
  • Tackle hard problems in scaling, stability, and controllability
  • Influence the direction of next-generation synthetic human technology
  • Join a highly technical, high-ownership environment where your work ships
AI Summary ✨
Synthesia logo

Synthesia

Remote EMEA

Remote EMEA
Experience: Senior
Posted: September 16, 2026
Last seen: an hour ago
Aws
Docker
Git
Golang
Nodejs
Python
machinelearning

Why we track Synthesia

Synthesia is the London-based AI video platform (avatars, dubbing, generative video) and one of the UK's biggest AI scale-ups. Engineering and research sit in London, with several roles open to anyone in Europe or remote in the UK. Senior engineers in London earn around £184K on levels.fyi (median £137K), and remote-Europe L5 roles come in at about €116K.

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