Systems Engineer

Infleqtion; Kidlington; On-site; GBP 85,000 - 120,000; Full time

Benefits offered by this job

Competitive salary

Bonus program

Incentive Stock Option Plan

10% pension contribution

Unlimited PTO

BUPA healthcare

Life assurance

Cycle to work

Travel up to 10%

Job summary

Infleqtion, a global quantum technology company, seeks a talented Systems Engineer to transform hardware prototypes into manufacturable, scalable products at our Kidlington, UK site. You will join a multidisciplinary team of hardware, software engineers and physicists to ensure seamless system integration throughout the product lifecycle.

The role emphasizes leading system-level design, requirements capture, documentation, modelling, and verification.

Qualifications

• Masters or PhD in Systems Engineering, Electrical Engineering, Physics, or a related field.
• 10+ years of systems engineering experience in complex, multidisciplinary environments.
• Proven experience across the full system lifecycle (requirements to verification).
• Experience with product lifecycle processes for R&D in deep tech.
• Strong technical documentation skills.

Responsibilities

• Lead systems engineering for quantum product development, including system-level design and requirements capture.
• Define and maintain documentation such as PRDs, SFRs, and ICDs with full traceability.
• Define modelling, simulation, and analytics to support design verification and lifecycle performance.
• Coordinate AI&T and V&V planning with a multi-disciplinary team.
• Collaborate with physicists and engineers to develop system architectures.
• Identify and mitigate technical risks and dependencies; support reliability analysis.
• Promote best practices and tools in systems engineering across programmes.

Skills

SysML

UML

IEEE 15288

INCOSE

IEEE 29148

Technical documentation

Cross-functional teams

Education

Masters or PhD in Systems Engineering or related

Tools

SysML

Product lifecycle tools

Job description

Infleqtion is a global quantum technology company solving the world's most challenging problems.

The company harnesses quantum mechanics to build and integrate quantum computers, sensors, and networks.

From fundamental physics to leading edge commercial products, Infleqtion enables "quantum everywhere" through our ecosystem of devices and platforms.

Location Infleqtion is an international company and has multiple sites in the US, and in the United Kingdom and Australia. This position is a full-time position based at our Kidlington (UK) site.

Position Summary Infleqtion is seeking a talented and experienced Systems Engineer to join our dynamic team, where you will play a pivotal role in transforming hardware prototypes into manufacturable and scalable products. You will collaborate closely with a diverse team of technical experts, hardware and software engineers, and physicists to ensure the seamless integration of complex systems, and within our product lifecycle process.

Key responsibilities include, but are not limited to:

• Lead systems engineering for quantum product development, including system-level design and requirements capture.
• Develop and maintain core systems engineering and interface documentation (e.g., Product Requirement Documents, System Requirement Documents, Interface Control Documents etc.) and ensure full traceability from requirements through to implementation and verification
• Define and execute modelling, simulation, and analytical activities to support design, verification, validation, and lifecycle performance
• Coordinate assembly, Integration & Test (AI&T) and Verification & Validation (V&V) planning, including processes, procedures, test strategies, and engineering support for execution with a multi-disciplinary team.
• Collaborate with physicists, engineers, and product teams to support development of system architectures.
• Identify, assess, and mitigate technical risks, assumptions, and dependencies; support reliability analysis
• Contribute to and promote best practices, tools, and continuous improvement in systems engineering across programmes

Qualifications

• Masters or PhD in Systems Engineering, Electrical Engineering, Physics, or a related field or equivalent industry experience.
• Significant experience in systems engineering (ideally 10+ years) within complex, multidisciplinary, high-tech or hardware environments.
• Proven experience across the full system lifecycle, including requirements management, system architecture development, and verification & validation.
• Experience working with product lifecycle processes for R&D projects within deep and emerging technologies.
• Strong technical documentation skills.
• Experience working with cross-functional teams (engineering, science, product, or commercial stakeholders).
• Experience with product lifecycle management and systems engineering frameworks such as UML, IEEE 15288, INCOSE, MSBE, SysML, IEEE 29148 etc.

Desired Skills:

• Experience with complex, high-tech or deep-tech systems combining mechanical, electrical, RF, optical, and software components
• Excellent problem-solving and analytical skills
• Experience in quantum technologies, precision instrumentation, or optical systems
• Exposure to AMO physics and quantum control systems
• Experience in regulated or high-reliability industries (e.g., aerospace, defence, medical devices)

Working conditions and Physical Requirements

Work will normally be performed in an office and laboratory environment and around technical equipment including computers and lasers. Able to sit, stand, bend, lift and carry up to 40 pounds without assistance. Able to efficiently use automated office equipment such as laptops, copiers, and printers; able to effectively engage in communications (via phone, computer, or in-person). Any required Personal Protective Equipment will be provided and must be properly used in accordance with company requirements.

Total Rewards program

• Competitive salary
• Bonus program
• Incentive Stock Option Plan
• Generous company 10% pension contribution regardless of employee contribution
• Unlimited PTO subject to fair usage
• BUPA healthcare after probation period
• Life assurance (4 x salary)
• Cycle to work and Technology scheme
• Travel Up to 10% travel may be required.

Equal Opportunity

Regardless of your interest in the quantum industry, you can take pride in the fact that Infleqtion is building an ecosystem of quantum technologies and commercial products, driving the industry towards the future. Studies reveal that while men apply for jobs when they meet an average of 60% of the requirements, women and other groups tend to apply only when they meet all the criteria.

Our goal is to find exceptional individuals who can enrich our te