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About the Role

Fuse Energy is seeking a Founding GPU Engineer to develop and optimize GPU-accelerated software for data center systems. This role involves low-level performance engineering for large-scale compute clusters, focusing on the software layer that connects GPU workload behavior to energy availability and grid demand.

Responsibilities

• Design, implement, and optimize CUDA kernels for high-throughput, latency-sensitive workloads.
• Profile and tune GPU performance across compute, memory bandwidth, and interconnect bottlenecks.
• Build tooling to correlate GPU cluster power draw and utilization with real-time energy pricing and grid signals.
• Optimize multi-GPU and multi-node scaling using NCCL, MPI, or similar communication libraries.
• Work with data center infrastructure teams on power capping, dynamic voltage/frequency scaling, and workload scheduling strategies.
• Collaborate with ML/systems engineers to integrate custom kernels into training/inference pipelines.
• Benchmark against CPU/GPU baselines and drive continuous performance improvements.
• Contribute to internal libraries, documentation, and best practices for GPU performance engineering.

Requirements

• 4+ years of experience writing production CUDA code, or equivalent strong project/industry experience.
• Deep understanding of GPU architecture (SMs, warps, memory hierarchy, occupancy).
• Proficiency in C++ and CUDA; experience with Python for tooling/orchestration.
• Experience with performance profiling tools (Nsight Systems/Compute).
• Familiarity with multi-GPU/multi-node scaling (NCCL, MPI, RDMA/InfiniBand).
• Strong grasp of memory optimization, kernel fusion, and parallel algorithm design.
• Comfortable working across the stack from low-level kernels to system-level infrastructure.

Skills

• CUDA
• C++
• Python
• Nsight Systems/Compute
• NCCL
• MPI
• RDMA/InfiniBand
• GPU architecture
• Memory optimization
• Kernel fusion
• Parallel algorithm design
• Triton
• cuDNN
• cuBLAS
• Kubernetes
• Slurm

Location

• Remote

Work Type

• Full-time

Experience Level

• 4+ years

Salary/Compensations

• Competitive salary
• Equity sign-on bonus

Benefits

• Biannual bonus scheme
• Fully expensed tech
• Breakfast and dinner allowance for office based employees

About the Company

• Fuse Energy is a forward-thinking renewable energy startup on a mission to deliver a terawatt of renewable energy - fast.
• We're combining first-principles thinking with cutting-edge technology to build a radically better energy system.
• We raised $210M from top-tier investors including Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group and strategic angels like Nico Rosberg, the Co-Founder of Solana and GPs behind Meta, Revolut, Spotify, Uber and more.
• As data centers become one of the largest and fastest-growing sources of electricity demand, Fuse is expanding into high-performance compute infrastructure that sits at the intersection of energy and AI - optimising how power-dense GPU workloads are scheduled, cooled, and balanced against grid conditions in real time.