Senior Mechanical Engineer

Lever, Inc.; Berkeley (CA); On-site; USD 165,000 - 190,000; Full time

Benefits offered by this job

Equity

Medical, dental and vision coverage

401(k) plan

Paid parental leave

Rejuvenation days

Vacation policy

Job summary

Rigetti Computing seeks a Senior Mechanical Engineer to architect, design, develop, and optimize advanced hardware for quantum platforms. You will lead mechanical design and integration of RF delivery and silicon packaging within dilution refrigerators, interfacing room-temperature control electronics with ultra-low-temperature environments.

You will collaborate with quantum device physicists, electrical/RF engineers, and external partners to deliver scalable mechanical systems for

Qualifications

• MS or higher in Mechanical Engineering or equivalent field.
• 7+ years of mechanical design and systems engineering experience.
• Proficiency with 3D CAD software (SolidWorks preferred).
• Strong tolerance analysis and GD&T knowledge.
• Experience with thermal and structural modeling and simulation.
• Knowledge of PLM and documentation control.

Responsibilities

• Architect and design mechanical subsystems for cryogenic hardware.
• Develop and maintain 3D CAD models, drawings, and BOMs.
• Lead design from room temp to millikelvin regime.
• Design thermal anchoring and shielding for stability and coherence.
• Perform thermal, vibrational, and structural simulations (FEA).
• Build and validate mechanical/cryogenic prototypes in lab.
• Collaborate with quantum physics teams for integration.
• Coordinate with hardware, cryo, RF, and systems teams.
• Develop specifications for outsourced components and manage suppliers.
• Create assembly docs and maintain design traceability in PLM.

Skills

7+ years experience

3D CAD proficiency

Tolerance analysis

GD&T principles

Thermal/structural modeling

PLM/documentation

Cross-disciplinary communication

Assembly processes

Education

MS in Mechanical Engineering

Tools

SolidWorks

PLM tools

Job description

Rigetti Computing is at the forefront of building scalable quantum computers. We are seeking a Senior Mechanical Engineer to architect, design, develop, and optimize advanced hardware systems that form the backbone of our next-generation quantum computing platforms. In this role, you will lead the mechanical design and integration of hardware that enables RF signal delivery and silicon device packaging within dilution refrigerators. These systems form the critical interface between room-temperature control electronics and ultra-low-temperature environments where superconducting qubits operate. You will collaborate closely with quantum device physicists, electrical/RF engineers, systems integration teams, and external fabrication partners to deliver innovative, high-performance mechanical systems for customer-deployed quantum computers.

Key Responsibilities: System Design & Development

• Senior the mechanical design of complex hardware subsystems including cryostat internal architecture, custom components for signal chain and metal enclosures
• Develop and maintain detailed 3D CAD models, drawings, and Bills of Materials (BOMs)
• Drive end-to-end design of mechanical interfaces from room temperature down to the millikelvin regime
• Design thermal anchoring and shielding systems optimized for mechanical stability and quantum coherence
• Perform thermal, vibrational, and structural simulations using FEA tools to ensure performance and robustness
• Build and validate mechanical/cryogenic prototypes in lab
• Collaborate with quantum physics teams to ensure system-level functionality in live quantum experiments
• Work closely with hardware, cryo, RF, and systems teams to deliver integrated, scalable quantum hardware platforms
• Develop specifications for outsourced components and manage supplier relationships for critical assemblies such as vacuum flanges, cryo fixtures, and RF housings
• Author assembly documentation, and maintain design traceability in PLM system

Required Qualifications

• M.S. degree or higher in Mechanical Engineering or equivalent field
• 7+ years of industry experience in mechanical design and systems engineering
• Proficiency with 3D CAD software (SolidWorks preferred)
• Strong background in tolerance analysis and GD&T principles
• Experience in thermal and structural modeling and simulation
• Familiarity with documentation control, revision management, and PLM tools
• Excellent cross-disciplinary communication and project collaboration skills
• Demonstrated ability to develop and document assembly processes

Preferred Qualifications

• Familiarity with thermal-mechanical effects in cryogenic materials and multi-physics system design
• Experience with RF packaging and electronic device integration in cryogenic or vacuum environments
• Quality assurance experience including inspection methodologies and non-conformance resolution
• Hands-on machining or fabrication experience to support rapid prototyping and design iteration

$165,000 - $190,000 a year

Base Salary

Rigetti offers a full slate of benefits from competitive salaries, equity, medical, dental and vision for employees as well as a 401(k) plan, a paid parental leave program, rejuvenation days, and avacation policy that aligns with local regulations and industry standards.

As engineering leaders, we value diversity and are committed to building a culture of inclusion to attract and engage innovative thinkers. Our technology, meant to serve all of humanity, cannot succeed if those who built it do not mirror the diversity of the communities we serve. Applications from women, minorities, and other under-represented groups are encouraged.