Quantum Systems Software Engineer

Xanadu; Toronto; On-site; CAD 120,000 - 160,000; Full time

Benefits offered by this job

Equity

Benefits

Job summary

Xanadu in Toronto is seeking a software engineer to join the PennyLane Performance Team. You will build a high-performance software stack enabling ultra-low latency communication between CPUs/GPUs/FPGA and contribute to the PennyLane-Lightning simulator suite.

You will optimize for modern hardware, work with profiling tools, and help shape the benchmarking and verification framework across the quantum software stack. Equity and benefits are offered.

Qualifications

• BSc in Computer Science, Engineering, Physics, Math, or a related field.
• Demonstrated experience in low-level networking/systems programming (e.g. networking/low-latency communication (RDMA), concurrency and authoring of high-performance libraries, OS internals).
• Proficiency in high-performance Modern C++ (C++17/20 preferred) and Python.
• Deep understanding of computer architecture (CPU, GPU, memory hierarchy) with hands-on optimization using profiling tools (e.g. perf, scalene, valgrind).
• Proven ability to diagnose and resolve complex issues across compiled and interpreted environments using debuggers.

Responsibilities

• Develop primitives/libraries that enable ultra-low latency communication between devices in a distributed, heterogeneous system (CPU/GPU/FPGA)
• Develop high-performance software components, adapting to new hardware platforms and programming paradigms.
• Convert abstract descriptions of algorithms into efficient & understandable software implementations.
• Develop the framework for benchmarking the compilation and execution pipeline, tracking quantum resources through the stack, and profiling the quantum software.
• Interpret and communicate complex concepts to the wider team.
• Participate in software system specification, design, and quality assurance (e.g., requirements gathering, defining software architecture, documentation, verification & validation, etc.)
• Provide leadership in software best practices, including continuous-integration pipelines, unit testing, & code review.

Skills

Low-level networking

Systems programming

C++17/20

Python

Profiling

Debugging

Education

BSc in science/engineering

MSc/PhD preferred

Tools

CUDA

HIP/ROCm

OpenMP

MPI

Job description

Xanadu in Toronto is seeking a software engineer to join the PennyLane Performance Team. You will build a high-performance software stack enabling ultra-low latency communication between CPUs/GPUs/FPGA and contribute to the PennyLane-Lightning simulator suite.

You will optimize for modern hardware, work with profiling tools, and help shape the benchmarking and verification framework across the quantum software stack. Equity and benefits are offered.