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Senior Machine Learning Engineer at Series B VC-backed AI scaleup

Are you ready to build the world's most inclusive speech recognition technology? This Series B AI scaleup is looking for a Senior ML Engineer to train massive self-supervised models and push the boundaries of R&D. Join a team of deep-tech pioneers in London and ship models that process centuries of audio data every month while enjoying a hybrid culture built for deep work.

About this role

Role overview

You will join a world-class R&D team building advanced speech recognition systems. This role bridges the gap between research and production, focusing on developing massive self-supervised models that process diverse audio data. You will push the boundaries of model inclusivity and accuracy while ensuring high-performance deployment across global infrastructure to solve complex real-world challenges.

About the company

About the company

Series B VC-backed AI scaleup

What you'll do

What you will do

  • Lead complex R&D projects to train and scale large self-supervised speech models using state-of-the-art transformer architectures.
  • Optimize distributed training processes across multi-node GPU clusters to improve model performance and training efficiency.
  • Implement and deploy production-ready inference optimizations, ensuring models meet rigorous real-time serving requirements for enterprise clients.

Who you are

Who this is a fit for

  • Extensive experience with modern ML architectures including Transformers, Flash Attention, and KV-caching in production or research environments.
  • Proven track record of managing distributed training on multi-node GPU clusters and optimizing high-throughput, low-latency inference systems.
  • Strong engagement with the ML community through technical publications, open-source contributions, or advanced research in audio or related fields.

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Why this role

Why this role is remarkable

  • Work at the absolute frontier of speech technology, training high-impact models that handle massive volumes of global audio data.
  • Join a well-funded Series B organization backed by top-tier VCs with a heritage of deep-tech innovation and academic excellence.
  • Benefit from a mature hybrid culture that balances deep technical focus time with structured collaborative sessions and comprehensive family benefits.

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