{"id":1830375,"url":"https://alion.io/job/silicon-quantum-computing-software-engineer-control-error-correction","title":"Software Engineer, Control & Error Correction","company":{"id":50887,"name":"Silicon Quantum Computing","domain":"sqc.com","url":"https://alion.io/company/sqc","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sydney, Australia"],"countries":["AU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"Knowledge Distillation","optional":false},{"name":"Model Distillation","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false},{"name":"Linux","optional":true},{"name":"SystemVerilog","optional":true},{"name":"Verilog","optional":true},{"name":"VHDL","optional":true}],"status":"live","first_seen_at":"2026-08-20T05:06:00Z","employer_posted_date":"2026-09-20","last_verified_at":"2026-10-11T23:59:35Z","board_verified":true,"closed_at":null,"days_open":52,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":52},"description":"Silicon Quantum Computing (SQC) is at the forefront of global efforts to build the world’s first commercial-scale quantum computer, while delivering quantum-enhanced AI and simulation products to customers today.\nBacked by over 25 years of technological excellence, SQC is a full-stack quantum computing company that leverages its proprietary manufacturing process to engineer atomic qubits in silicon with 0.13 nanometer precision. It is the most precise semiconductor manufacturing in the world, enabling systems with world-leading algorithmic fidelity, and a decisive advantage in the global quantum computing race.\nOur products are commercially deployed and generating revenue. Watermelon, our quantum-enhanced AI system, is delivering superior results on real-world problems across energy, telecom and finance. Quantum Twins, our simulation platform, provides unparalleled ability to model quantum systems, accelerating molecule and materials discovery.\nThis is SQC: building the future of computing while delivering quantum impact today.\nAbout the role\nWe are hiring software engineers into Control & Error Correction, the team that builds the realtime engine inside the quantum computer: the software and digital logic that executes circuits, corrects errors and manages logical qubit operations, in NISQ mode today and fault-tolerant mode as the system scales. These components form the Realtime Quantum Control Plane, running across a mesh of FPGA cards wired to cryogenic hardware.\nTime is the constraint. A correction has to come back inside about a microsecond. The scheduler allocates logical qubits across cards without adding latency of its own, and nothing on the hot path allocates, blocks or pauses. The limit is set by the physics, and no later optimisation recovers a missed budget.\nThe work spans the realtime scheduler, the NISQ pulse compiler in Rust and Python, logical measurement and Pauli frame tracking across chiplets, magic state distillation, and the decoder path from FPGA error monitoring through to the neural network decoders in the cluster. Compiler Services owns the executable contract, Automated Calibration Services keeps qubits in spec, and Platform & Infrastructure runs the cluster underneath.\nBased at our Sydney facility, you will work with physicists and quantum information scientists on what a requirement means, and with the platform engineers who run the hardware underneath. This is a role for someone who reasons about worst case rather than average, and who wants to work where the latency budget is set by physics.\nRole responsibilities\nBuild and operate the realtime scheduler: logical qubit allocation across the FPGA mesh, the schedule and result pipeline, and the QIS controller\nMaintain and extend the NISQ pulse compiler that translates pulse-level operations into hardware instructions\nImplement logical measurement, Pauli frame tracking and inter-QPU operations across chiplets\nWork on the decoder path: error monitoring, offload and look-ahead, and the neural network decoder services in the cluster layer\nBuild the orchestration around magic state distillation, so resource states are available when a logical gate needs them\nDesign against hard deadlines: latency budgets, jitter, and hot paths with no allocation and no surprises\nWork across the boundaries between fabric, embedded processor, host and cluster, including memory-mapped interfaces, DMA and the card-to-card protocols\nVerify timing-dependent behaviour properly: simulation, reference models, and replay of recorded device data before anything touches a card\nMeasure latency and jitter on the hardware rather than inferring them, and report the measured results\nWork with Compiler Services on what the control plane can execute, and with Automated Calibration Services on calibration duty cycles\nBring up and operate the mesh alongside Platform & Infrastructure, including the CI/CD path onto real hardware\nDocument the design, the interfaces and the measurements so the next engineer can extend what you built\nYour experience\nEssential\n4+ years building systems software in production\nRust or C++ at depth, plus Python for tooling, analysis and test\nHard realtime experience, where a missed deadline is a failure rather than a slowdown: latency budgets, jitter, and allocation-free or lock-free hot paths\nConcurrency and synchronisation, and the discipline to keep the critical path simple\nWorking close to hardware: memory-mapped IO, drivers, DMA, interrupts, and the contracts between software and logic\nScheduling, allocation or queueing algorithms, and the ability to reason about worst case rather than average\nStrong computer science fundamentals, and comfort implementing an algorithm from a paper\nTesting systems whose behaviour depends on timing, including simulation and comparison against a reference implementation\nMeasuring performance on the target hardware rather than by approximation\nGit workflow, code review and CI applied to hardware-facing code\nThe ability to work with physicists and quantum information scientists on what a requirement means\nNice to have\nHDL design and verification in VHDL, Verilog or SystemVerilog, and the FPGA toolchain around it\nAMD Versal or Alveo cards, particularly the V80\nQuantum error correction, decoders, or matching and graph algorithms under a cycle budget\nEmbedded and bare-metal work, including no_std Rust on ARM targets\nKernel bypass, RDMA, DPDK, or other low-latency data paths\nDSP, pulse-level control, or closed-loop feedback in software\nInstrument control, scientific hardware, or precision timing and synchronisation\nNeural network inference under a latency budget, including quantisation\nLinux performance tooling: perf, tracing, and understanding where a microsecond went\nQuantum computing exposure of any kind (no physics degree required)\nPublications, open source contributions, or a realtime project you are willing to talk through\nEqual opportunity\nSQC is an equal opportunity employer. We value diverse perspectives and experiences, and encourage applications from candidates who may not meet every listed requirement. If you’re excited about the role and believe you can contribute, we encourage you to apply.\nExport controls\nThis position may require access to export-controlled information or technology. Employment may be subject to applicable export control laws and may require eligibility assessment based on factors such as nationality, citizenship, or residency, and, where necessary, obtaining relevant export licenses or approvals.\nAbout SQC\nSQC was founded by renowned physicist and materials scientist Michelle Simmons, who pioneered the field of atomic electronics, including the development of the world’s first single-atom transistor and the first integrated circuit built with atomic precision. Our Chair, Simon Segars, former CEO of Arm, is a leader in the semiconductor industry and was instrumental in developing the processors that powered the mobile computing revolution.\nAs a full-stack company with in-house QPU manufacturing, SQC can design, produce and test new quantum chips in under a week, enabling rapid iteration and a decisive advantage in the race to build the world’s first commercial-scale quantum computer.\nSQC is a high-accountability environment built on a simple principle: Every Atom Counts. If you’re looking to play a meaningful role in building the next frontier of computing, we’d love to hear from you.","description_format":"text","description_chars":7448,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Quantum Computing Hardware"],"lifecycle":[{"event":"open","at":"2026-10-04T12:06:30Z"}],"visa":[],"liveness":{"score":14,"band":"cold","label":"Long shot","p_open":1,"p_active":0.32,"p_room":0.45,"age_days":51,"expected_fill_days":28,"reasons":["conf:2","win:tail"],"computed_at":"2026-10-10T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/silicon-quantum-computing-software-engineer-control-error-correction","json_url":"https://alion.io/job/silicon-quantum-computing-software-engineer-control-error-correction.json","meta":{"generated_at":"2026-10-12T03:02:02Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":4494,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":50887},"rest":"https://alion.io/mcp/rest/get_company?id=50887"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsilicon-quantum-computing-software-engineer-control-error-correction"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fsilicon-quantum-computing-software-engineer-control-error-correction"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fsilicon-quantum-computing-software-engineer-control-error-correction"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/silicon-quantum-computing-software-engineer-control-error-correction\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsilicon-quantum-computing-software-engineer-control-error-correction"}]}