Jobs in the United States

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Added 7 mins ago
J
Senior Regulatory Affairs Program Lead (Software/OTTAVA)
Jobgether
Remote, United States
- $112,000 to $208,150 USD / year
…partner is looking for a Senior Regulatory Affairs Program Lead (Software/OTTAVA) based in the United States…
Added 11 mins ago
Sr Field Service Technician
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Honolulu, HI
YOU MUST HAVE
Added 11 mins ago
Design Project Lead, Data Center Design and Construction
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Meta is seeking a Design Project Lead experienced in the design and construction of Critical Facilities to become part of our Data Center Design Engineering organization. Our data centers…
Added 16 mins ago
SO
IT Application Development - Senior/Specialist
State of Washington
Olympia, WA
- $99,300 to $133,608 USD / year
Added 26 mins ago
Staff Software Engineer, Eval Infra TL, Quality Platform, Gemini Cloud Operator, Agentic AI
Google
Sunnyvale, CA
8 years of experience in software development.
Added 39 mins ago
BP
Electrical Engineer (Programming)
Bonneville Power Administration
Spokane, WA · Vancouver, WA
- $99,954 to $140,188 USD / year
GS-11: You must have one year of specialized experience equivalent to the next lower grade (GS-09)
Added 39 mins ago
VH
Registered Nurse - Patient Safety Manager
Veterans Health Administration
Jackson, MS
- $60,112 to $143,910 USD / year
Functions as the lead manager and implementer of patient safety policies and activities developed by the National Center for Patient Safety (NCPS), The Joint Commission (TJC), National…
Added 40 mins ago
Product Manager, AI
Jobgether
Remote, United States
Location and Work Authorization: Candidates must reside in the United States and be legally authorized to work in the country
Added 41 mins ago
AR
Civil Engineer
Agriculture, Rural Development
Las Vegas, NV · Elko, NV · Carson City, NV
- $74,678 to $116,362 USD / year
For the GS-11: You must have one year specialized experience equivalent to the GS-09 in the Federal service
Added 41 mins ago
VH
Social Services Assistant
Veterans Health Administration
Remote, United States
- $50,460 to $82,007 USD / year
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Added 54 mins ago
M&A Product Tech Diligence Architect, Manager
Deloitte
Kansas City, MO
+ Review engineering maturity across the software development lifecycle, DevSecOps, release management, testing, observability, and governance
Added 54 mins ago
M&A Product Tech Diligence Architect, Manager
Deloitte
Saint Louis, MO
+ Review engineering maturity across the software development lifecycle, DevSecOps, release management, testing, observability, and governance
Added 56 mins ago
WI
(USA) Senior Manager, UX Design
Walmart Inc.
United States
- $110,000 to $220,000 USD / year
Role summary: Walmart seeks a Senior Manager, UX Design to lead user experience strategies that enhance customer engagement and satisfaction. This role involves directing user research,…
Added 1 hour ago
Implementation Consultant
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NY
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Added 1 hour ago
Enterprise Product Engineer - Fullstack
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…Are you willing to challenge yourself, and build phenomenal software by working with the smartest people in the world? Join us at the forefront of technological advancement. We’re hiring a…
Added 1 hour ago
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Los Altos, CA
Build and scale CI/CD and build systems for software, firmware and hardware validation flows, including lab and hardware-in-the-loop testing
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Assembler Level III
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Remote, United States
…The role scope includes Application Support Engineers, SDETs, Software Engineers, and SREs focused on improving reliability, observability, recovery, automation, and operational…
Added 1 hour ago
Site Reliability Engineer -Jersey City, NJ & Dallas, TX
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Remote, United States
…The role scope includes Application Support Engineers, SDETs, Software Engineers, and SREs focused on improving reliability, observability, recovery, automation, and operational…
Added 1 hour ago
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Broadridge Appia and TradeScope FIX (Financial Information eXchange) software.
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Principal Software Engineer
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Added 1 hour ago
Lead, Systems Engineering (NSDC Operations Lead)
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Schriever AFB, CO
Job Title: Lead, Systems Engineering (NSDC Operations Lead)
Added 1 hour ago
IG
Scrum Master / Software Systems Engineer
Insight Global
Louisville, CO
- Up to $85 USD / hour
Strong understanding of the software development lifecycle, including requirements, design, implementation, integration, testing, verification, and validation.
Added 1 hour ago
Project Engineering Intern
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Lead projects in support of the development, peer review, release, and delivery of satellite work instructions, test procedures, and test software.
Added 1 hour ago
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Littleton, CO
Experience integrating and testing hardware and software in Hardware In-the-Loop (HWIL)

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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Jobs in the United States