Senior AI Backend Engineer — Training & Experimentation

Lightning AI, the company behind PyTorch Lightning, seeks a Senior Software Engineer to design and scale backend systems for AI development across distributed training, workload orchestration, and developer tooling. You will partner with multiple teams to advance platform APIs and ensure scalable, reliable performance, with a hybrid work model across London, NYC, and SF.

The role demands substantial backend experience and ownership of large technical initiatives from architecture through

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