System Software Developer - Performance

Job Description

Job Title: System Software Developer - Performance. Location: Toronto, Canada

Responsibilities:

• Develop primitives and libraries enabling ultra-low-latency communication between CPUs, GPUs, FPGAs, and other devices in distributed heterogeneous systems.
• Build high-performance software components that adapt to new hardware platforms and programming paradigms.
• Convert abstract algorithm descriptions into efficient and understandable software implementations.
• Develop benchmarking frameworks for compilation and execution pipelines.
• Track quantum resources throughout the software stack and develop profiling tools.
• Contribute to the PennyLane and Catalyst quantum software stack, including high-performance simulator components.
• Interpret and communicate complex technical concepts to the wider team;
• Participate in software specification, architecture, documentation, verification, validation, and quality assurance.
• Support software best practices including continuous integration, unit testing, and code reviews.
• Develop software that makes efficient use of quantum hardware resources and supports high-performance quantum computing applications.

Qualifications:

• Bachelor’s degree in Computer Science, Engineering, Physics, Mathematics, or a related field.
• Demonstrated experience with low-level networking or systems programming, including networking, low-latency communication such as RDMA, concurrency, high-performance libraries, or operating system internals.
• Proficiency in C++ (C++17/20 preferred) and Python.
• Strong understanding of computer architecture, including CPUs, GPUs, and memory hierarchy;
• Hands-on experience optimizing code for runtime and memory efficiency using professional profiling tools such as perf, scalene, or valgrind.
• Ability to rapidly diagnose and resolve complex issues across compiled and interpreted environments using industry-standard debuggers.

Preferred:

• MSc or PhD in Computer Science, Engineering, Physics, Mathematics, or a related field.
• Experience with code parallelization and accelerators, including multithreading, OpenMP, C++ threads, multiprocessing, MPI, GPUs, CUDA, HIP/ROCm, or compiler offload directives.
• Experience designing and implementing scalable and reproducible scientific workloads on HPC, supercomputer, or cloud platforms such as AWS, Azure, or GCP.
• Expertise in quantum computing demonstrated through coursework, a thesis, or peer-reviewed publications.
• Experience writing complex quantum workflows and optimizing quantum resource usage.
• Experience working with PennyLane or similar quantum software frameworks.

Benefits and Compensation:

• Base salary of CAD 120,000 to CAD 160,000 per year, depending on location, experience, and internal benchmarks.
• Equity eligibility.
• Employee benefits.
• Inclusive, safe, equitable, and barrier-free workplace.
• Accommodation support is available during the recruitment process.

Other Information:

• The company may use AI tools to assist with applicant screening and assessment. These tools support the recruitment team but do not replace human judgment.
• Final hiring decisions are made by humans.
• Candidates requiring accommodations can contact Recruiting at [email protected].
• Equal opportunity employer.