Callosum

Inference Engine Development - Member of Technical Staff

Callosum
Apply
4 months ago
London, United KingdomSenior
H1B sponsor

Responsibilities

  • Contribute upstream to SGLang and vLLM while maintaining internal forks where needed.
  • Improve inference-engine hardware awareness across scheduling, memory management, and execution.
  • Design and implement parallelism and disaggregation strategies for heterogeneous hardware.
  • Collaborate with accelerator systems software engineers to align engine abstractions with diverse hardware capabilities.

Requirements

  • Deep familiarity with SGLang, vLLM, or comparable inference-serving frameworks, including scheduler design, memory management, and execution pipelines.
  • Strong experience with high-performance Python and C++/CUDA systems in the context of machine-learning inference.
  • Experience designing or implementing parallelism strategies for large-model serving.
  • Understanding of disaggregated serving architectures and their tradeoffs.
  • A demonstrated ability to work effectively in fast-moving open-source codebases with evolving APIs and design conventions.

Benefits

  • Equity and ownership.
  • Private healthcare.
  • Visa sponsorship and relocation benefits.
  • In-person work at the company’s London office with provided tools, space, and equipment.

Tech Stack

Callosum

About Callosum

11-50 employees
Contact me