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Added 4 mins ago
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Lead Principal Core Infrastructure Engineer
Oracle
Nashville, TN
- $146,300 to $306,400 USD / year
Mentors teams and leads the architecture of highly scalable, interdependent distributed systems. Identifies and removes performance/scalability bottlenecks for hyper‑scale workloads;…
Added 24 mins ago
Senior Microsoft Platform Engineer
Systems Engineering Solutions Corporation
Alexandria, VA
Education Requirements:Bachelor’s degree in computer science, Information Systems, Engineering, or related field, or equivalent practical experience
Added 25 mins ago
Azure Engineer
Insight Global
Brentwood, TN
We are seeking an experienced Azure Engineer to join a growing infrastructure and cloud operations team. This individual will be responsible for supporting and optimizing cloud…
Added 26 mins ago
Risk Management Engineer
Fresenius Medical Care
Knoxville, TN
Knowledge and application of quality systems, design controls, and risk management system requirements to comply with regulations and standards.
Added 26 mins ago
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Metallurgical Engineer - Advanced Metallic Systems
BWXT
Oak Ridge, TN
- $86,450 to $136,000 USD / year
Position Overview As our Metallurgical Engineer for Advanced Metallic Systems, you will lead development of alloys, forming processes, casting routes, additive manufacturing approaches, and…
Added 35 mins ago
Senior Software Engineer (Quantum Computing)
Infleqtion
Remote, United States
…converting complex scientific requirements into software that controls real quantum machines. If you are looking to step back from the keyboard, this is not that…
Added 35 mins ago
Senior Software Engineer (Quantum Computing)
Infleqtion
Remote, United States
…converting complex scientific requirements into software that controls real quantum machines. If you are looking to step back from the keyboard, this is not that…
Added 35 mins ago
Senior Software Engineer (Quantum Computing)
Infleqtion
Remote, United States
…converting complex scientific requirements into software that controls real quantum machines. If you are looking to step back from the keyboard, this is not that…
Added 35 mins ago
I
Staff Systems Engineer (Time and Frequency)
Infleqtion
Louisville, CO
- $160,000 to $210,000 USD / year
…customer-focused approach to innovation. We seek an experienced Staff Systems Engineer to support multidisciplinary government and commercial R&D…
Added 35 mins ago
I
Senior Supplier Quality Engineer
Infleqtion
Louisville, CO
- $155,000 to $185,000 USD / year
…ticker symbol “INFQ”). We are seeking a Senior Supplier Quality Engineer to drive supplier quality, resolve complex manufacturing issues, and strengthen supplier quality processes. This…
Added 41 mins ago
Fabrication Wet Etch Engineer, Quantum AI
Google
Goleta, CA
As a Hardware Engineer on the Quantum AI Fabrication team in Goleta, California, you will develop, optimize, and scale cleanroom wet chemical and solvent processes used to build…
Added 50 mins ago
Software Engineer, Enterprise Platform
SpaceXAI
San Francisco, CA
We're hiring an Enterprise Platform Engineer to build the foundational systems that make Cursor ready for the world's largest engineering organizations. Today we have basic organizations,…
Added 1 hour ago
Quality Engineer (Level DOE)
Doosan Bobcat North America, Inc.
Rogers, MN
The Quality Engineer position is responsible for monitoring and driving improvements to the quality of components or products produced in their area of responsibility, and may involve…
Added 1 hour ago
XE
Power Plant Engineer, Controls System Focus (Senior, Staff, or Entry level)
Xcel Energy
Burnsville, MN
- $70,000 to $129,267 USD / year
As the site Plant Engineer with primary focus on control systems, duties would include technical support for equipment repairs, involvement in troubleshooting for operational issues,…
Added 1 hour ago
Associate Director, Cyber Operations (Countermeasures)
KPMG LLP
Minneapolis, MN
…or GED is required; certifications in certified information systems security professional (CISSP) and google professional cloud security engineer are…
Added 1 hour ago
Senior API & Integration Engineer
Vast Bank
Remote, United States
The Senior API & Integration Engineer is a hands-on technical role responsible for designing, developing, securing, and supporting integrations that connect Vast Bank’s core banking,…
Added 1 hour ago
Engineering Manager, Agent & Product Security
SpaceXAI
New York, NY · Palo Alto, CA
- Engineer the isolation that makes Cursor safe to run inside customers' most valuable codebases: tenancy, workspace, secret, and data protections designed for real adversaries
Added 1 hour ago
OT Security Engineer
CGI
Pittsburgh, PA
CGI is looking for operational Technology (OT) security engineer for a fulltime position in New Orleans.
Added 1 hour ago
Prin Program Engineer
Consumers Energy
LUDINGTON, MI
The Principal Program Engineer is responsible for providing the engineering and technical expertise necessary to successfully execute projects and programs. This role oversees multiple…
Added 1 hour ago
Senior Infrastructure Engineer
Mach Industries
Huntington Beach, CA
…access approved AI capabilities. Partner with the AI Platform Engineer on secure integrations and reusable infrastructure, with appropriate access controls and human review for…
Added 1 hour ago
Infrastructure Engineer
Mach Industries
Huntington Beach, CA
…the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350…
Added 1 hour ago
AI Platform Engineer
Mach Industries
Huntington Beach, CA
…the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350…
Added 1 hour ago
Advanced Manufacturing Engineering Intern, Process & Equipment (Summer 2027)
GLOBALFOUNDRIES U.S. INC.
NY
In your role as Engineering Intern you will be working with an assigned Engineer to:
Added 1 hour ago
Advanced Manufacturing Engineering Intern, Process & Equipment (Summer 2027)
GLOBALFOUNDRIES U.S. INC.
NY
In your role as Engineering Intern you will be working with an assigned Engineer to:
Added 1 hour ago
Advanced Manufacturing Engineering Intern, Process & Equipment (Summer 2027)
GLOBALFOUNDRIES U.S. INC.
NY
In your role as Engineering Intern you will be working with an assigned Engineer to:

Infleqtion

Staff Systems Engineer (Time and Frequency)

Louisville, CO, United States

$160,000 to $210,000 USD / year

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Job details

Pay: $160,000 to $210,000 USD / year
Posting language: English
Posted: Sep 23, 2026

Original 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. As a deep-tech startup, Infleqtion embraces a results-driven, fast-paced, and customer-focused approach to innovation. We seek an experienced Staff Systems Engineer to support multidisciplinary government and commercial R&D projects. The duties and responsibilities below describe the expected scope of ownership. Depending on business needs, this role may perform a combination of some or all of the following duties; additional duties may arise.

Own and manage system requirements for Time & Frequency products and programs, including customer requirement review, internal decomposition, traceability, and alignment across engineering teams.
Maintain Jama or equivalent requirements-management tools as the source of truth for customer requirements, derived requirements, verification methods, requirement status, version control, and change history.
Own and manage interface control documentation (ICDs), including source-of-truth documentation, revision control, and coordination across the physics package, lasers and optics, electronics, FPGA/firmware, software, mechanical, thermal, command-and-telemetry, and customer teams.
Lead verification and validation planning by mapping requirements to verification methods, defining evidence needs, coordinating test-plan inputs, and ensuring customer-facing V&V documentation is complete, consistent, and review-ready.
Coordinate with AI&T leads and technical teams to define, document, and oversee integration and test activities from subsystem through full-system level, including capture of performance data and preparation of results for internal and customer review.
Own the quality and readiness of customer-facing systems-engineering documentation, including templates, folder structure, revision control, release status, and delivery readiness.
Author major systems-engineering documents and assign technical sections to subject-matter experts as needed, including requirements documents, ICDs, system architecture documents, CONOPs, verification plans, test plans, design-review packages, and customer deliverables.
Drive Product Lifecycle execution for selected R&D, product-development, and customer programs by defining required deliverables, establishing review entry and exit criteria, preparing design-review packages, and tracking closure actions.
Work with the Chief Engineer and program leadership to establish a repeatable design-review structure, including standard review materials, required artifacts, action-item tracking, and customer-facing closure evidence.
Maintain the program risk register and support risk communication with program management and customers, including mitigation plans, assigned owners, schedule impacts, and linkage to technical decisions.
Support and maintain FMEA or similar failure-analysis documentation, ensuring identified failure modes are connected to requirements, design mitigations, test coverage, and program risks.
Own and maintain system CONOPs by working with physicists, subsystem leads, applications engineering, and customers to ensure operational concepts are consistent with system architecture, interfaces, operating modes, constraints, and intended use cases.
Own and maintain system architecture documentation for precision timing products, including functional allocations, subsystem responsibilities, timing and frequency-reference architecture, interfaces, operating modes, and change propagation across teams.
Own source-of-truth SWaP tracking by collecting updated size, weight, power, thermal, and environmental estimates from IPT leads; documenting assumptions and margins; and communicating impacts to architecture, requirements, risk, and customer deliverables.
Establish lean, right-sized systems-engineering processes suitable for deep-tech R&D, product development, and customer deployment without creating unnecessary process burden.
Ensure consistent use of systems-engineering tools and methods across selected programs, including requirements management, configuration control, document control, review readiness, traceability, and change management.
Bachelor's degree in engineering, science, physics, or a related technical field.
5+ years of progressive systems engineering experience with complex hardware/software systems, ideally including quantum systems, precision sensors, aerospace systems, spacecraft payloads, or other multidisciplinary R&D systems.
Demonstrated ability to own requirements from customer-level intent through internal decomposition, traceability, change control, and verification planning.
Experience developing or maintaining ICDs across electrical, mechanical, optical, software, command/telemetry, and customer interfaces.
Experience creating V&V plans, test plans, verification matrices, and customer-ready evidence packages for complex technical systems.
Experience with configuration management, document control, revision control, and formal technical review processes.
Ability to learn enough technical depth in complex physics, hardware, electronics, software, and integration/test systems to drive practical systems engineering decisions and keep teams aligned.
Demonstrated ability to work with engineers, physicists, program managers, customers, and subcontractors in a fast-paced, matrixed environment.
Professional-level written, verbal, and presentation skills, including the ability to turn incomplete technical inputs into clear customer-facing documentation.

Preferred skills:

Hands-on experience with Jama, DOORS, Polarion, or comparable requirements management and traceability tools.
Experience supporting government-funded R&D, NASA programs, aerospace payload development, or customer-facing technical reviews such as SRR, PDR, CDR, TRR, or equivalent gate reviews.
Experience managing FMEA, risk registers, action-item logs, design-review artifacts, or technical decision records.
Experience with AI&T, hardware bring-up, subsystem integration, environmental testing, qualification planning, or test readiness reviews.
Experience owning architecture diagrams, CONOPs, SWaP budgets, or interface documentation for systems involving sensors, lasers, electronics, software, controls, or telemetry.
Experience helping organizations implement lean Product Life Cycle or productization processes for R&D-to-product transition.
Salary Range: 160000 - 210000 per year
Comprehensive medical, dental, and vision coverage, including full-spectrum fertility support for growing families.
Employer-funded Health Savings Account
Unlimited PTO
401(k) match
Company-paid Life and AD&D Insurance
Flexible Savings Account
Paid FMLA, Maternity/Paternity Leave
Employee Assistance Program
Student Loan Repayment
Equity Program

Notice to Recruitment Agencies:

Infleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.

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