Member of Technical Staff (AI Inference Engineer)
Perplexity · AI Research & Systems
- Location
- London, United Kingdom
- Metro
- London
- Workplace
- Unspecified
- Level
- Unspecified
- Type
- Full-time
- Posted
- 6 months ago
- Source
- Ashby
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PythonRustKubernetesPyTorchTensorFlowJAXCUDALLMs
What the posting covers
About the company
We are looking for an AI Inference Engineer to join our growing team. We build and run the inference engine behind every Perplexity query and deploy dozens of model architectures at scale with tight latency and cost budgets. Our stack is Rust, Python, CUDA,…
Responsibilities
New models support. Support transformer-based retrieval, text-generation, and multimodal models in our inference infrastructure, from weight loading, request scheduling and KV-cache management to support in API Gateway. GPU kernels migration to CuTe DSL. Port…
Who we're looking for
Deep experience with GPU programming and performance work (CUDA, Triton, CUTLASS, or similar). Any other deep systems programming experience is a plus. You understand modern LLM architectures and are able to bring them up reliably in a production environment.…
Nice-to-have
ML compilers and framework internals: PyTorch internals, torch.compile, custom operators. Distributed GPU communication: NCCL, NVLink, InfiniBand, RDMA libraries, model/tensor parallelism. Low-precision inference: INT8/FP8/FP4 quantization, mixed-precision…
Qualifications
3+ years of professional software engineering experience with meaningful work on ML inference or high-performance systems. Familiarity with at least one deep learning framework (PyTorch, JAX, TensorFlow). Understanding of GPU architectures (memory hierarchy,…
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