{"id":28562,"url":"https://alion.io/job/infleqtion-quantum-software-engineer-nuclear","title":"Quantum Software Engineer - Nuclear","company":{"id":6532,"name":"Infleqtion","domain":"infleqtion.com","url":"https://alion.io/company/infleqtion","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":91,"open_postings":8,"ghost_share":0,"stale_share":0.375,"repost_share":0,"time_to_fill_p50_days":48,"computed_at":"2026-10-19T05:45:15Z"}},"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":"structured","locations":["Chicago, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":110000,"max":182000,"currency":"USD","period":"year","gross":null,"usd_annual":182000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"C++","optional":false},{"name":"Cirq","optional":false},{"name":"Julia","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Qiskit","optional":false},{"name":"AWS","optional":true},{"name":"CI/CD","optional":true},{"name":"FastAPI","optional":true},{"name":"GCP","optional":true},{"name":"GitHub","optional":true},{"name":"JavaScript","optional":true},{"name":"PostgreSQL","optional":true},{"name":"PyQt","optional":true},{"name":"React.js","optional":true},{"name":"SQLAlchemy","optional":true},{"name":"Stim","optional":true}],"status":"live","first_seen_at":"2026-07-31T00:00:00Z","employer_posted_date":"2026-07-31","last_verified_at":"2026-10-19T11:20:01Z","board_verified":true,"closed_at":null,"days_open":80,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":80},"description":"We are seeking a Quantum Software Engineer with expertise in nuclear physics and quantum algorithms for physical science applications.\nJob Responsibilities\nThe duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned:\nConduct R&D toward cutting-edge advances in quantum technology with a focus on applications to nuclear physics\nWrite and test code to apply quantum algorithms to nuclear physics problems\nInterface and collaborate with external groups interested in using quantum computing to solve nuclear physics problems\nContribute to development of government and commercial nuclear proposals\nCollaborate with experimental physicists and software engineers to bridge the gap between theoretical concepts and practical implementation\nEngage with the broader scientific community by publishing research findings in scientific journals and presenting at conferences\nStay up to date with the latest developments in both quantum algorithms and nuclear physics\nProvide guidance and support to other team members, fostering a collaborative research environment\nRequirements\nRequired Qualifications\nBS or MS in Computer Science, Physics, Applied Mathematics, Electrical Engineering, or a closely related field\nHigh proficiency in programming, with fluency in Python preferable. Proficiency in alternative languages (e.g., C/C++ or Julia) with the ability to rapidly upskill in Python.\nGeneral familiarity of nuclear physics: nuclear structure, Goldstone diagrams, Fermionic algebra, Folk Space, etc.\nSpecific experience with at least one subfield of nuclear physics: QCD, EFT, many-body, etc.\nExperience with quantum algorithms used for physical science applications: QPE, VQE, Hamiltonian Simulation, etc.\nExperience in applying quantum algorithms to nuclear physics\nFamiliarity with AI: machine learning, LLMs, agentic AI, etc.\nExperience with open-source quantum software frameworks, such as Cirq or Qiskit. Ideal candidates will have experience not only using these libraries but also modifying them.\nDemonstrated ability to work and communicate will all levels of an organization. Professional-level communication skills, including verbal, written, and presentation skills.\nDemonstrated ability to work comfortably in a highly collaborative, cross-functional, team-oriented, and matrixed environment.\nDesire and demonstrated ability to thrive and produce results in a fluid, dynamic, and fast-paced environment.\nDemonstrated ability to learn new and complex topics quickly.\nResourceful problem-solver who collaboratively identifies effective paths forward with demonstrated expertise in executing productization efforts.\nPassion for solving complex problems and challenges in a highly technical and scientific environment.\nAbility to be in the office any three days per week.\nAbility to travel domestically and potentially internationally up to 10%.\nPreferred Qualifications\nPhD in quantum computation, physics, computer science, or a directly related field\nFamiliarity with concepts in quantum computing such as error correction, fault tolerance, native gate decomposition, qubit mapping and routing, and variational quantum algorithms.\nExperience with advanced open-source quantum software frameworks such as Stim\nFamiliarity with best practices of professional software engineering such as coverage, integration tests, type checking, unit tests, and version control\nExperience with backend development with tools such as FastAPI for web frameworks and PostgreSQL/SQLAlchemy for databases.\nExperience with cloud development, especially on GCP and AWS.\nFamiliarity with CI/CD, automated actions, issue tracking, version control, and other features on GitHub.\nFamiliarity with security core best-practices such as access control, encryption at rest, key rotation, and logging\nExposure to or interest in front-end / GUI development (e.g., React, JavaScript, HTML/CSS, PyQt).\nBenefits\nSalary range: 110000-182000 USD/year\n100% company-paid medical, dental, vision, short/long-term disability\nEmployer-funded Health Savings Account\nUnlimited PTO\n401(k) match\nCompany-paid Life and AD&D Insurance\nFlexible Savings Account\nPaid FMLA, Maternity/Paternity Leave\nEmployee Assistance Program\nStudent Loan Repayment\nEquity Program\nEqual Opportunity\nHere you have freedom to embrace your whole self: who you love, your gender identity and expression, skin color, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.\nNote\nThis position may require access to information protected under U.S. export control laws and regulations for quantum computing technology. Please note that any offer for employment may be conditioned on authorization to receive software or technology controlled under these U.S. export control laws and regulations without sponsorship for an export license.\nContact Information\nIf this opportunity interests you and you fit the job description, please submit an application. If you need assistance or an accommodation due to disability, please feel free to contact us at .\nNotice to Recruitment Agencies:\nInfleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.","description_format":"text","description_chars":5738,"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","Unlimited PTO"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Quantum Science & Computing","Sensors & Transducers","Quantum Computing Hardware"],"lifecycle":[{"event":"open","at":"2026-07-20T00:00:00Z"}],"visa":[],"liveness":{"score":17,"band":"cold","label":"Long shot","p_open":1,"p_active":0.48,"p_room":0.36,"age_days":80,"expected_fill_days":48,"reasons":["conf:2","velocity","win:tail","crowd:"],"computed_at":"2026-10-19T05:45:15Z"},"pay":{"stated_usd_annual":182000,"is_top_pay":true},"html_url":"https://alion.io/job/infleqtion-quantum-software-engineer-nuclear","json_url":"https://alion.io/job/infleqtion-quantum-software-engineer-nuclear.json","meta":{"generated_at":"2026-10-19T13:21:51Z","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":9609,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-20T00:00:00Z"}},"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":6532},"rest":"https://alion.io/mcp/rest/get_company?id=6532"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Finfleqtion-quantum-software-engineer-nuclear"},{"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%2Finfleqtion-quantum-software-engineer-nuclear"},{"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%2Finfleqtion-quantum-software-engineer-nuclear"},{"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/infleqtion-quantum-software-engineer-nuclear\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Finfleqtion-quantum-software-engineer-nuclear"}]}