Scientist, Superconducting Digital & Cryogenic Electronics

Job Description

Job Title: Senior Applied Scientist, Superconducting Digital and Cryogenic Control Electronics. Location: San Francisco, CA, USA

Responsibilities:

• Design and simulate superconducting digital circuits and cryogenic control and readout electronics for scalable quantum processors.
• Develop and validate Josephson-junction circuit models, timing and margin analyses, and verification methods for superconducting digital designs.
• Evaluate system-level trade-offs involving wiring count, power dissipation across cryogenic stages, latency, and physical footprint.
• Communicate recommendations based on system-level evaluations of candidate control architectures;
• Co-design control interfaces with qubit-device teams so that control electronics and quantum devices are developed as an integrated system.
• Carry designs from concept through simulation, layout, design review, and fabrication handoff.
• Deliver tapeout-ready layouts and verification reports through established design-request and design-review processes.
• Present research results internally and, where appropriate, publish findings in peer-reviewed venues.
• Contribute to the development of technologies that enable scaling of quantum processors, including alternative processor architectures, superconducting qubit packaging, and cryogenic control electronics.
• Collaborate with the quantum processor design team and participate in shared design and review processes.

Qualifications:

• PhD, or a Master's degree with 7+ years of applied research experience.
• Experience programming in Java, C++, Python, or a related language.
• Experience with patents or publications in top-tier peer-reviewed conferences or journals.
• Experience with circuit design and simulation;
• Familiarity with superconducting qubit control and readout, including pulse generation, multiplexed readout, and feedback latency requirements.
• Experience designing superconducting digital circuits such as RSFQ, ERSFQ, adiabatic quantum phase parametron, or related single-flux-quantum logic families.
• Experience with Josephson-junction circuit simulation and margin analysis.
• Experience with EDA workflows for custom circuit design, including schematic capture, layout, physical verification, and working with a process design kit.

Preferred:

• Knowledge of cryogenic electronics, including cryo-CMOS, low-temperature amplifiers and mixers, and thermal and power budgeting across refrigerator stages.
• Experience with microwave engineering and signal integrity in dense cryogenic interconnects.
• Experience taking chips through fabrication and correlating measured circuit behavior with design models.
• Familiarity with quantum error correction decoding and the classical-processing requirements it creates for control systems.

Benefits and Compensation:

• Base salary: $192,200 to $260,000 per year for the San Francisco, CA location.
• Compensation may also include sign-on payments and restricted stock units (RSUs).
• Final compensation depends on experience, qualifications, and location.
• Medical, dental, vision, and prescription health insurance;
• Basic Life and AD&D insurance, with supplemental life insurance options.
• Employee Assistance Program and mental health support.
• Medical advice line and Flexible Spending Accounts.
• Adoption and surrogacy reimbursement coverage.
• 401(k) matching.
• Paid time off.
• Parental leave.

Other Information:

• The position is part of Amazon Web Services' Center for Quantum Computing and the Enabling Technologies team.
• The role focuses on developing cryogenic control hardware and superconducting digital circuits for large-scale quantum processors.
• Amazon is an equal opportunity employer and considers qualified applicants without discrimination based on legally protected characteristics.
• Workplace accommodations are available for candidates with disabilities during the application and hiring process;
• Amazon will consider qualified applicants with arrest and conviction records in accordance with applicable fair-chance laws.
• The position is based in San Francisco, California.