LM Studio is used by millions of people around the world to run AI on their own computers, and now with Bionic - also in the cloud. Our values prioritize putting the human in the center, and creating tools that we want to use ourselves, and recommend to our friends and family.
As a team, we work with high technical intensity and personal responsibility. We are looking for curious, self-motivated, creative, and technically excellent teammates to join us and build the future of human-AI interactions in software.
About the role
The Role
We are looking for an Inference Runtime Software Engineer to push forward LM Studio’s inference stack on-device and in the cloud. You will integrate new inference engines and runtime capabilities, bring up new open-weight models and modalities, and optimize model execution for a wide range of CPU and GPU targets. You will also contribute improvements to the open-source projects we build on.
Requirements
Qualifications
•
Significant experience building production ML systems, inference runtimes, or performance-sensitive infrastructure
•
Strong programming ability in Python and C++
•
Deep understanding of transformer architectures and the mechanics of model inference
•
Experience profiling CPU or GPU workloads and reasoning about compute, memory, synchronization, and data movement
•
Experience with PyTorch and inference systems such as llama.cpp, MLX, ExecuTorch, vLLM, SGLang, or TensorRT-LLM
•
Strong debugging instincts across model code, runtime internals, operating systems, and CPU or GPU execution
•
Takes personal responsibility for the correctness and performance of their work
Nice to have
Bonus Qualifications
•
Past contributions to open-source inference runtime projects such as llama.cpp, MLX, ExecuTorch, vLLM, SGLang, or TensorRT-LLM
Responsibilities
Responsibilities
•
Maintain and push forward our inference stack on-device and in the cloud
•
Bring up new model architectures and multimodal models
•
Improve latency, throughput, memory use, and reliability across CPU, CUDA, Metal, Vulkan, and ROCm runtimes
•
Build runtime capabilities for model loading, batching, scheduling, caching, and distributed execution
•
Benchmark and diagnose correctness and performance problems across the inference stack
•
Contribute upstream to open-source projects such as llama.cpp and MLX
Benefits
Benefits
•
Competitive salary and equity grants
•
Great medical, vision, dental healthcare plans
•
Catered team lunch / expensed dinners in the office