Senior Machine Learning Engineer (vLLM)

Red Hat, Inc.; Boston (MA); Hybrid; USD 186,000 - 287,000; Full time

Job summary

Red Hat, Inc. is seeking a Senior Machine Learning Engineer to lead the design and optimization of vLLM-based inference systems on hybrid Boston workloads. You will implement high-performance Python, C++, CUDA, and Triton code for production-scale LLM serving, focusing on latency, throughput, and cost efficiency.

The role requires deep GPU optimization expertise, strong collaboration with open-source communities, and the ability to guide performance-driven architecture and reviews across teams.

Qualifications

• 3 years of experience in high-performance Python and Modern C++ development.
• 3 years of profiling/benchmarking on NVIDIA GPUs using Nsight or similar tools.
• 2 years of experience with open-source PRs to PyTorch or vLLM; CUDA, Triton, or CUTLASS kernel optimization; LLM inference optimization; distributed computing; and leading technical design.

Responsibilities

• Architect, develop, and optimize advanced LLM inference algorithms including quantization, sparsification, batching, and memory management.
• Drive performance profiling and modeling on NVIDIA GPUs using Nsight Systems, Nsight Compute, CUPTI, PyTorch Profiler, CUDA, Triton, and CUTLASS.
• Own end-to-end optimization of vLLM-based inference pipelines, including kernel-level tuning and multi-GPU serving.
• Evaluate, prototype, and integrate state-of-the-art LLM serving techniques from research and open-source communities.
• Set engineering standards, conduct peer reviews, and guide testing and benchmarking strategies.

Skills

Python performance

Modern C++

Nsight profiling

GPU memory optimization

Open-source PRs

CUDA/Triton/CUTLASS

LLM inference

Distributed computing

Technical leadership

Education

Master's degree in CS/CE or related field

Bachelor's degree in CS/CE or related field

Job description

## Senior Machine Learning EngineerApply: Hybrid: Boston: Posted Today: R-060246\\*Telecommuting permitted: work may be performed within normal commuting distance from the Red Hat, LLC office in Boston, MA. Lead the design and implementation of high-performance Python, C++, CUDA, and Triton code for vLLM-based inference systems, GPU kernels, and numerical computing components in production-scale LLM serving environments. **What You Will Do:*** Architect, develop, and optimize advanced LLM inference algorithms, including quantization, sparsification, speculative decoding, paged attention, KV cache optimization, batching, scheduling, and memory management, to significantly improve latency, throughput, scalability, and cost efficiency.* Drive deep performance profiling, benchmarking, and modeling on NVIDIA GPUs, using tools such as Nsight Systems, Nsight Compute, CUPTI, PyTorch Profiler, CUDA, Triton, and CUTLASS to identify bottlenecks and deliver measurable system-level improvements.* Own the end-to-end optimization of vLLM-based inference pipelines, including kernel-level tuning, runtime optimization, distributed inference, multi-GPU serving, tensor/pipeline parallelism, and large-scale deployment performance.* Evaluate, prototype, and integrate state-of-the-art LLM serving techniques from cutting-edge research and open-source communities, including quantization, sparsity, speculative decoding, continuous batching, prefix caching, attention optimization, and model compression.* Set engineering standards for performance-critical code, conduct rigorous peer reviews, guide testing and benchmarking strategies, and leverage AI-assisted development tools to maintain high code quality, reliability, and maintainability.* Contribute to and maintain upstream open-source ML infrastructure vLLM, including reviewing pull requests, triaging issues, participating in design discussions, and supporting release readiness.* Stay at the forefront of LLM systems research and GPU computing advancements, proactively identifying opportunities to improve the product through emerging techniques in serving efficiency, hardware utilization, and model acceleration. **What You Will Bring:*** Master's degree (U.S. or foreign equivalent) in Computer Science, Computer Engineering, or related field and three (3) years of experience in the job offered or related role OR Bachelor's degree (U.S. or foreign equivalent) in Computer Science, Computer Engineering, or related field and five (5) years of experience in the job offered or related role.* Must have three (3) years of experience with: high-performance Python and Modern C++ development; performance analysis, benchmarking, and profiling on NVIDIA GPUs using Nsight or similar tools; and GPU memory architecture and memory optimization for deep learning workloads.* Must have two (2) years of experience with: making open-source pull requests to PyTorch or vLLM; CUDA, Triton, or CUTLASS kernel optimization; LLM inference optimization, including quantization, KV cache or batching; distributed computing including inter and intra GPU communication protocols; and leading technical design, reviewing performance-critical code. #LI-DNI The salary range for this position is $186,160 - $287,410/year. Actual offer will be based on your qualifications. **Pay Transparency**Red Hat determines compensation based on several factors including but not limited to job location, experience, applicable skills and training, external market value, and internal pay equity. Annual salary is one component of Red Hat’s compensation package. This position may also be eligible for bonus, commission, and/or equity. For positions with Remote-US locations, the actual salary range for the position may differ based on location but will be commensurate with job duties and relevant work experience. **About Red Hat**Red Hat is the world’s leading provider of enterprise open source software solutions, using a community-powered approach to deliver high-performing Linux, cloud, container, and Kubernetes technologies. Spread across 40+ countries, our associates work flexibly across work environments, from in-office, to office-flex, to fully remote, depending on the requirements of their role. Red Hatters are encouraged to bring their best ideas, no matter their title or tenure. We're a leader in open source because of our open and inclusive environment. We hire creative, passionate people ready to contribute their ideas, help solve complex problems, and make an impact.