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CohereCohere

Member of Technical Staff, Model Efficiency

Engineers on this team optimize LLM inference for lower latency and higher throughput by identifying bottlenecks, developing optimizations across the execution stack, and collaborating with modeling teams. Requires 5+ years high-performance coding in C++/Python and LLM inference experience.

About the job

Responsibilities

  • Work across the inference stack to improve core performance metrics by diving deep into model execution, identifying bottlenecks, and developing innovative optimizations.
  • Collaborate closely with modeling and systems teams to experiment, measure, and ship improvements that meaningfully accelerate inference.
  • Build expertise in advanced performance techniques, including GPU/CUDA optimizations, kernel-level improvements, and model execution strategies for MoE and large-scale architectures.

Requirements

  • 5+ years of experience writing high-performance, production-quality code.
  • Strong programming skills in C++ or Python (Rust/Go also welcome).
  • Experience working with large language models and familiarity with the LLM inference ecosystem (e.g., vLLM, SGLang, etc.).
  • Ability to diagnose and resolve performance bottlenecks across the model execution stack.
  • A strong bias for action — ship fast, measure impact, and iterate.

Nice-to-Haves

  • Experience with GPU programming, CUDA, or low-level systems optimization.
  • Language modeling with transformers (MoE, speculative decoding, KV-cache optimizations).
  • Scaling performance-critical distributed systems (e.g., computation, search, storage).

Skills

C++, Python, Rust, Go, LLMs, vLLM, Sglang, CUDA, GPU, Transformers, Moe, Kv-Cache

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