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Deals - Deal Valuation - Senior Associate
PwC
Toronto, ON
- Full-time
…how you work (Strong command of Microsoft Excel, experience with Microsoft Power Platform and…
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Manager, Marketing Science
DAC
Toronto, ON
- Full-time
This role requires three in-office days per week
Added 1 month ago
Software Engineering Intern (2027)
Databricks
Vancouver, BC
You have implementation skills with a general purpose program language, such as Python, Java, or C++
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CAD-DFT Engineer
Arm
Toronto, ON
- Full-time
Collaborate with architecture, implementation, CAD, product engineering, customers, and ecosystem partners to ensure successful deployment.
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AI Engineer
Guidepoint
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Integrate Intelligent Systems: Engineer solutions that seamlessly combine LLMs with our proprietary knowledge repositories, external APIs, and real-time data streams to create powerful…
Added 1 month ago
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Software Analyst Intern (Winter 2027, 8-12months)
Hitachi Rail
Toronto, ON
- $23 to $30 CAD / hour
- Full-time
During the two weeks, the intern is expected to be at least two days per week
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Satellite Engineering Student
Calian in Space & Technology
Montreal, QC
- Internship
Compétences en programmation (Python, Java, SQL, Perl, Matlab, C)
Added 1 month ago
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Lead AI Engineer
EPAM Systems
Canada
- Full-time
…financial assistant platform. In this role, you will work closely with sophisticated global institutional clients and business users to rapidly test, refine, and deploy chat interfaces,…
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QA SDET – Spécialiste Automatisation & AI
CGI
Sherbrooke, QC
- Full-time
Collaborate with developers and architects to anticipate risks.
Added 1 month ago
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Founding Engineer
Glass Factory
Montreal, QC
- Full-time
…Our content is central to how we educate brands, build trust with factories, and make the manufacturing world more…
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Quantum Software Developer - Compilation
Xanadu
Toronto, ON
- Full-time
Experience with benchmarking and performance-oriented optimizations.
Added 1 month ago
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Quantum Software Developer - FTQC Software (Intermediate to Senior)
Xanadu
Toronto, ON
- Full-time
Proven experience in production-grade Python and C++ software development with a focus on writing clean, modular and maintainable code.
Added 1 month ago
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Quantum Software Developer - PennyLane Core
Xanadu
Toronto, ON
- Full-time
Proven experience in production-grade Python software development with focus on writing clean, modular and maintainable code.
Added 1 month ago
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Quantum Software Developer - Performance
Xanadu
Toronto, ON
- Full-time
Proficiency in high-performance Modern C++ (C++17/20 preferred) and Python.
Added 1 month ago
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System Software Developer - Performance
Xanadu
Toronto, ON
- Full-time
Proficiency in high-performance Modern C++ (C++17/20 preferred) and Python.
Added 1 month ago
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Software Developer - Frontend (Intermediate to Senior)
Xanadu
Toronto, ON
- Full-time
Competent with backend languages like Python.
Added 1 month ago
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Quantum Scientist - Compilation
Xanadu
Toronto, ON
- Full-time
…large-scale quantum algorithms on fault-tolerant quantum computers with millions of physical qubits. As a quantum compilation researcher, you will be part of Xanadu’s software and…
Added 1 month ago
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Software Developer - Backend (Intermediate to Senior)
Xanadu
Toronto, ON
- Full-time
As a Software Developer, you will help build out the pennylane.ai ecosystem of products. The goal of pennylane.ai is to help pioneer quantum software development as a discipline and spread…
Added 1 month ago
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Quantum Scientist - Algorithms
Xanadu
Toronto, ON
- Full-time
Strong software development and scientific programming skills in Python, preferably with a proven track record of contributing to open-source scientific libraries.
Added 1 month ago
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Quantum Scientist - Finance
Xanadu
Toronto, ON
- Full-time
Strong software development and scientific programming skills in Python, preferably with a proven track record of contributing to open-source scientific libraries.
Added 1 month ago
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Quantum Scientist - Software
Xanadu
Toronto, ON
- Full-time
Deep expertise in scientific software development is the core requirement, with proficiency in using frontier AI models, but the ideal candidate should also hold considerable research…
Added 1 month ago
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Cybersecurity Engineer
Xanadu
Toronto, ON
- Full-time
Triage and analyze alerts generated by our MDR provider, ensuring thorough follow-up with affected users until alert resolution
Added 1 month ago
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Software Developer - Backend (Intermediate to Senior)
Xanadu
Toronto, ON
- Full-time
Experience with scientific/numerical Python libraries (NumPy, SciPy, pandas, xarray).
Added 1 month ago
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Software Development Manager
Xanadu
Toronto, ON
- Full-time
Strong foundational knowledge equivalent to a senior individual contributor, including hands-on experience with Python and Git.
Added 1 month ago
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AI Developer - Agentic System
Xanadu
Toronto, ON
- Full-time
As an AI Developer at Xanadu, you will play a crucial role in integrating generative AI into our R&D methodologies. This unique position allows you to contribute to the development of our…

Xanadu

System Software Developer - Performance

Toronto, ON, Canada

The base salary range is 120,000 - 160,000 CAD. · Full-time

Apply on xanadu.careers.hibob.com About employer

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Job details

Pay: The base salary range is 120,000 - 160,000 CAD.
Job type: Full-time
Posting language: English
Posted: Aug 14, 2026

Original job description

About Xanadu:
Xanadu’s mission is to build quantum computers that are useful and available to people everywhere.
At Xanadu, we are learners, innovators, researchers, collaborators and problem solvers. We are creating something that has never been built before. Few people in their life will be able to be a part of something like this, where if we are successful, the technologies we develop will solve some of the world’s most challenging problems, and literally change the world. And that is something to be excited about!

Your Role and Responsibilities:
Building a high-performance software stack that makes optimal use of quantum hardware resources is key to realizing early, game-changing applications of quantum computing. As part of the PennyLane Performance Team, you author high-performance libraries that enable ultra-low latency communication between FPGAs and GPUs, develop other high-performance extensions such as the PennyLane-Lightning simulator suite, and contribute to the performance monitoring and benchmarking tooling for the PennyLane & Catalyst quantum software stack, ensuring PennyLane is the highest-performing framework for quantum computing.
You will:

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.

Basic Qualifications and Experience:

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) coupled with hands-on experience in optimizing code for runtime and memory efficiency using professional profiling tools (e.g. perf, scalene, valgrind).
Proven ability to rapidly diagnose and resolve complex issues across compiled and interpreted environments using industry-standard debuggers.

Preferred Knowledge and Experience:

MSc, PhD in Computer Science, Engineering, Physics, Math, or a related field.
Familiarity with code parallelization and accelerators: multithreading (e.g., OpenMP, C++ threads), multiprocessing (e.g., MPI), GPUs (e.g. CUDA, HIP/ROCm) or compiler offload directives.
Experience in designing and implementing scalable & reproducible scientific workloads on HPC / supercomputer platforms or cloud hardware (e.g., AWS, Azure, GCP).
Expertise in quantum computing, as demonstrated by extensive coursework, thesis, or peer-reviewed publications.
Experience with writing complex quantum workflows and optimizing the use of quantum resources.

This is for a new position. Your base salary will be determined based on your location, experience, and internal benchmarks. The base salary range is 120,000 - 160,000 CAD. You will also be eligible for equity and benefits.Our values are important. They are fundamental and lay the foundation for culture at Xanadu. Learn more about our values here.

We are an equal opportunity employer and encourage candidates of all backgrounds to apply. We are committed to building an inclusive, safe, and equitable culture and fostering an environment where our employees feel included, valued, and heard. We are committed to meeting the needs of all individuals and support a barrier-free workplace. Should you require accommodations at any point during the recruitment process please contact Recruiting at recruiting@xanadu.ai.

Please be advised that we may use artificial intelligence (AI) tools to assist in the screening and assessment of applicants for this position. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Apply on xanadu.careers.hibob.com About employer

More about this job

Responsibilities

You will develop high-performance software libraries and primitives to enable ultra-low latency communication across heterogeneous systems including CPUs, GPUs, and FPGAs. Additionally, you will contribute to benchmarking, profiling, and optimizing the quantum software stack to ensure maximum performance.

Requirements

Candidates must possess a degree in a technical field and demonstrate proficiency in modern C++ and Python with experience in low-level systems programming. A deep understanding of computer architecture and experience with performance optimization tools is essential for this role.

Skills

C++
Python
Systems programming
Low-latency communication
RDMA
Computer architecture
Performance profiling
CUDA
HIP
ROCm
MPI
OpenMP
Quantum computing
Distributed systems
Debugging
Software architecture

Benefits

Equity
Health benefits

Visa sponsorship

Not detected in the job text

Keywords

Quantum computing
PennyLane
Catalyst
C++17
C++20
GPU
FPGA
CPU
RDMA
Perf
Scalene
Valgrind
HPC
Cloud computing
AWS
Azure
GCP
Continuous integration
Unit testing
Code review
Multithreading
Multiprocessing
Compiler offload
Software stack
Benchmarking
Profiling
Heterogeneous systems
Distributed systems
Algorithms
Scientific workloads

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Jobs in Canada