{"id":566944,"url":"https://alion.io/job/alice-bob-expert-quantum-physicist","title":"Expert Quantum Physicist","company":{"id":1906,"name":"Alice & Bob","domain":"alice-bob.com","url":"https://alion.io/company/alice-bob","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":85,"open_postings":5,"ghost_share":0,"stale_share":0.4,"repost_share":0,"time_to_fill_p50_days":71,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Science & Research","role_family":"Science & Research","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":63000,"max_usd":100000,"period":"year","method":"role_seniority_country_cell","sample_n":15},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Alice & Bob","optional":false},{"name":"Ansys HFSS","optional":false},{"name":"CUDA","optional":false},{"name":"Git","optional":false},{"name":"JAX","optional":false},{"name":"NumPy","optional":false},{"name":"Python","optional":false},{"name":"Quantization","optional":false},{"name":"QuTiP","optional":false},{"name":"SciPy","optional":false},{"name":"HPC","optional":true}],"status":"live","first_seen_at":"2026-09-09T07:19:38Z","employer_posted_date":"2026-09-09","last_verified_at":"2026-11-07T20:14:08Z","board_verified":true,"closed_at":null,"days_open":59,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":59},"description":"About the mission\nWe're looking for an experienced physicist to own the numerical simulation strategy for our superconducting qubits: setting direction, defining what counts as a trustworthy result, and identifying where our methods need to improve. Doing this means working across quantum physics, microwave engineering, and numerical methods. It calls for deep understanding of all three, and expertise where they intersect.\nAbout the role\nAs technical lead for numerical simulation of superconducting qubits, you'll own how Alice & Bob predicts and validates device behavior before it reaches the lab. You'll define our simulation approach - from microwave design to qubit dynamics - and set the bar for when a result can be trusted. Where our methods fall short, you'll spot it and drive the fix. You're not executing someone else's roadmap; you're setting it, working closely with the physicists and engineers in the details.\nAbout you\nYou have several years of experience beyond your PhD, with expertise spanning quantum physics, microwave engineering, and numerical methods. When a result doesn't hold up, you're comfortable challenging it and can rigorously demonstrate why. You're motivated by owning a technical direction rather than contributing to one.\nResponsibilities\nOwn the predictive performance of our simulation stack end to end - accuracy, reliability, and efficiency from device physics through numerical implementation.\nSet the standard for what \"trustworthy\" means across microwave, quantum, and numerical simulations - defining accuracy, convergence, and validation practices, and leading the theoretical justification of our tools and methods.\nFind and fix what's holding the stack back, whether the bottleneck is performance, robustness, or model fidelity.\nShape the roadmap for our simulation tools, working closely with domain experts across the company.\nClose the loop with experiment - validating simulations against measured device performance alongside experimentalists.\n Be the expert reference on simulation methodology across the team.\nRequirements\n7+ years of post-PhD experience in a relevant academic field or industry.\nPhD or equivalent in quantum physics, applied physics, electrical engineering, quantum information, or computational physics.\nA proven track record of technical leadership: driving simulation or modeling methodology at the organizational level, with results that directly shaped device design decisions.\nBroad, hands-on mastery across the full simulation chain - from device physics to numerical implementation - with recognized, go-to depth in at least one of these areas.\nDeep experience simulating superconducting qubits or comparable systems: finite element methods (Ansys HFSS, COMSOL, Palace), circuit quantization (scQubits, Quantum Metal), and quantum simulation (QuTiP, Dynamiqs, CUDA-Q).\nCommand of the underlying quantum physics: circuit QED, Hamiltonian modeling, open quantum systems, decoherence mechanisms, physical gates and measurement.\nFluency in microwave engineering for quantum applications: passive components (resonators, transmission lines, filters, couplers, circulators), active devices (amplifiers, mixers), and measurement instrumentation (VNAs, spectrum analyzers, homodyne/heterodyne detection).\nStrong software engineering foundations for scientific computing - Python, NumPy/SciPy or JAX, and Git - sufficient to build and maintain simulation infrastructure others rely on.\nThe judgment to determine when a simulation result can and cannot be trusted, and the ability to bring teams and domain experts to a shared view on those calls.\nA track record of mentoring senior scientists and engineers, and building consensus among specialists from different fields.\nFluent English and excellent written and verbal communication skills.\nNice to have\nHands-on experience with HPC or large-scale simulations.\nPublications in circuit QED or computational electromagnetics.\nHands-on experience in experimental research, providing a practical sense of how quantum devices behave in the lab - beyond what models predict.\nRecruitment Process\nScreening Call with Grace, Talent Acquisition Specialist (30 min)\nHiring Manager Interview with Mattis (45 min)\nTechnical Presentation with the Team (60 min)\nLeadership Team Interview (45 min)\nFit Interview (45 min)\nReference check","description_format":"text","description_chars":4349,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":true},"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"France","iso":"FR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Quantum Computing Hardware"],"lifecycle":[{"event":"open","at":"2026-09-09T10:02:10Z"}],"visa":[],"liveness":{"score":64,"band":"ok","label":"Likely open","p_open":1,"p_active":0.853,"p_room":0.75,"age_days":58,"expected_fill_days":71,"reasons":["conf:1","win:late"],"computed_at":"2026-11-07T05:47:08Z"},"pay":null,"html_url":"https://alion.io/job/alice-bob-expert-quantum-physicist","json_url":"https://alion.io/job/alice-bob-expert-quantum-physicist.json","meta":{"generated_at":"2026-11-07T21:43:02Z","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":35304,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-08T00:00:00Z"}},"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":1906},"rest":"https://alion.io/mcp/rest/get_company?id=1906"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Falice-bob-expert-quantum-physicist"},{"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%2Falice-bob-expert-quantum-physicist"},{"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%2Falice-bob-expert-quantum-physicist"},{"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/alice-bob-expert-quantum-physicist\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Falice-bob-expert-quantum-physicist"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":566944}},{"tool":"search_jobs","arguments":{"company":"alice-bob.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":566944},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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