{"id":1537637,"url":"https://alion.io/job/xanadu-ai-system-software-developer-performance","title":"System Software Developer - Performance","company":{"id":698,"name":"Xanadu AI","domain":"xanadu.ai","url":"https://alion.io/company/xanadu-ai","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Toronto, Canada"],"countries":["CA"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":60000,"max":150000,"currency":"USD","period":"year","gross":null,"usd_annual":150000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"CUDA","optional":false},{"name":"CUDA Toolkit","optional":false},{"name":"GCP","optional":false},{"name":"HPC","optional":false},{"name":"OpenMP","optional":false},{"name":"PennyLane","optional":false},{"name":"Python","optional":false},{"name":"ROCm","optional":false}],"status":"live","first_seen_at":"2026-09-30T19:16:59Z","employer_posted_date":null,"last_verified_at":"2026-09-30T19:16:59Z","board_verified":false,"closed_at":null,"days_open":1,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":1},"description":"Job Description\nJob Title: System Software Developer - Performance. Location: Toronto, Canada\nResponsibilities:\nDevelop primitives and libraries enabling ultra-low-latency communication between CPUs, GPUs, FPGAs, and other devices in distributed heterogeneous systems.\nBuild high-performance software components that adapt to new hardware platforms and programming paradigms.\nConvert abstract algorithm descriptions into efficient and understandable software implementations.\nDevelop benchmarking frameworks for compilation and execution pipelines.\nTrack quantum resources throughout the software stack and develop profiling tools.\nContribute to the PennyLane and Catalyst quantum software stack, including high-performance simulator components.\nInterpret and communicate complex technical concepts to the wider team;\nParticipate in software specification, architecture, documentation, verification, validation, and quality assurance.\nSupport software best practices including continuous integration, unit testing, and code reviews.\nDevelop software that makes efficient use of quantum hardware resources and supports high-performance quantum computing applications.\nQualifications:\nBachelor's degree in Computer Science, Engineering, Physics, Mathematics, or a related field.\nDemonstrated experience with low-level networking or systems programming, including networking, low-latency communication such as RDMA, concurrency, high-performance libraries, or operating system internals.\nProficiency in C++ (C++17/20 preferred) and Python.\nStrong understanding of computer architecture, including CPUs, GPUs, and memory hierarchy;\nHands-on experience optimizing code for runtime and memory efficiency using professional profiling tools such as perf, scalene, or valgrind.\nAbility to rapidly diagnose and resolve complex issues across compiled and interpreted environments using industry-standard debuggers.\nPreferred:\nMSc or PhD in Computer Science, Engineering, Physics, Mathematics, or a related field.\nExperience with code parallelization and accelerators, including multithreading, OpenMP, C++ threads, multiprocessing, MPI, GPUs, CUDA, HIP/ROCm, or compiler offload directives.\nExperience designing and implementing scalable and reproducible scientific workloads on HPC, supercomputer, or cloud platforms such as AWS, Azure, or GCP.\nExpertise in quantum computing demonstrated through coursework, a thesis, or peer-reviewed publications.\nExperience writing complex quantum workflows and optimizing quantum resource usage.\nExperience working with PennyLane or similar quantum software frameworks.\nBenefits and Compensation:\nBase salary of CAD 120,000 to CAD 160,000 per year, depending on location, experience, and internal benchmarks.\nEquity eligibility.\nEmployee benefits.\nInclusive, safe, equitable, and barrier-free workplace.\nAccommodation support is available during the recruitment process.\nOther Information:\nThe company may use AI tools to assist with applicant screening and assessment. These tools support the recruitment team but do not replace human judgment.\nFinal hiring decisions are made by humans.\nCandidates requiring accommodations can contact Recruiting at .\nEqual opportunity employer.","description_format":"text","description_chars":3228,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"Canada","iso":"CA","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Quantum Computing Hardware"],"lifecycle":[{"event":"open","at":"2026-09-30T19:29:57Z"}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":0,"expected_fill_days":21,"reasons":["seen:0","velocity","win:early"],"computed_at":"2026-10-01T05:45:00Z"},"pay":{"stated_usd_annual":150000,"is_top_pay":false},"html_url":"https://alion.io/job/xanadu-ai-system-software-developer-performance","json_url":"https://alion.io/job/xanadu-ai-system-software-developer-performance.json","meta":{"generated_at":"2026-10-01T21:07:35Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":3683,"day_limit":5000,"remaining_today":1317,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}