Test Engineer (QRF)

We are seeking a Senior Test Engineer to support the development and validation of prototype QRF systems and subsystems moving towards scalable products. This individual will work across hardware, software, and R&D teams to develop and execute test plans, set up and interface with test equipment, and automate pilot line test processes. A strong candidate will have hands-on experience with test automation, scripting, hardware validation, and embedded system testing in a Linux-based environment.

The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned at any time with or without notice.

• Develop, maintain, and execute test strategies and test plans for atomic clock systems and subsystems.
• Lead End of Line test plan definition for new products and features, in collaboration with firmware, software, and hardware design teams.
• Design and deploy optical and electrical test benches for system integration.
• Perform compliance, robustness, and reliability testing on electronic and optical subsystems.
• Support board bring-up and debugging efforts, providing feedback to design teams.
• Develop and maintain an automated test platform using Python.
• Operate and interface with a range of electrical and optical lab test equipment.
• Process and visualize test data, leveraging scripting and analysis tools to extract meaningful insights.
• · Work within Git-based software development workflows to track, version, and collaborate on test software., 2 Hours Ago Hybrid Denver, CO, USA 110K-204K Annually Senior level 110K-204K Annually Senior level Machine Learning * Payments * Security * Software * Financial Services Leads software engineering teams responsible for vulnerability remediation, application ownership, application support, and delivery. Oversees development and maintenance projects, security and compliance, operational standards, resource planning, service quality, and continuous improvement. Coaches employees, manages performance and career development, coordinates cross-functional stakeholders, and ensures applications meet business requirements and quality standards. Xero

Business Growth Specialist

2 Hours Ago Hybrid Denver, CO, USA Entry level Entry level Cloud * Fintech * Information Technology * Machine Learning * Software Drive revenue growth across small and medium-sized business accounts through high-volume outbound campaigns. Promote Stripe and GoCardless integrations, manage conversion pipelines, track sales activity and metrics in Salesforce, and provide insights to improve messaging and conversions. The role requires consultative customer communication, consistent target achievement, and collaboration with Marketing, Data Science, and Customer Success teams. Top Skills: GocardlessSalesforceStripe Wells Fargo

Bachelor’s degree in Electrical Engineering, Computer Engineering, or a related field.

• 4+ years of relevant industry experience with a focus on hardware validation and system integration testing.
• Strong programming skills in Python and other scripting languages.
• Familiar with at least one compiled language (C/C++/Rust).
• Hands-on experience with optical and electronic test equipment, including oscilloscopes, DMMs, OSAs, and VNAs.
• Strong understanding of communication protocols (USB, I2C, SPI, serial comms, etc.).
• Ability to process, analyze, and visualize test data to drive design decisions and improvements.
• Comfortable working in Linux environments with command-line tools for scripting and automation.
• Collaborate with a cross-functional team to support product development from prototype to production
• Experience with Git and modern software development workflows.
• Strong analytical and problem-solving skills, with experience in root cause analysis and debugging embedded systems.

Preferred Experience

• Advanced degree in electrical engineering, Computer Engineering, Physics, or a related field.
• 6+ years of experience in hardware test and validation.
• Experience with firmware integration, embedded system validation, and debugging.
• Experience with environmental reliability testing and compliance validation.
• Knowledge of regulatory compliance standards relevant to test and validation processes.
• Prior experience working with atomic, optical, or quantum technologies.
• Ability to travel to support remote test integration and commissioning as required.

Be an Early Applicant In-Office Louisville, CO, USA 160K-185K Annually Senior level In-Office Louisville, CO, USA 160K-185K Annually Senior level Develop and execute test strategies for atomic clock QRF systems, lead end-of-line testing, build optical and electrical test benches, perform reliability and compliance validation, support board bring-up and embedded debugging, and automate testing with Python. The role also involves operating laboratory equipment, analyzing and visualizing test data, and collaborating with hardware, firmware, and software teams from prototype through production. The summary above was generated by AI, * Salary Range: per year 160000-185000

• 100% company-paid medical, dental, vision, short/long-term disability
• 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, Hybrid Denver, CO, USA 35K-63K Hourly Senior level 35K-63K Hourly Senior level Fintech * Financial Services Lead and coach a branch team to acquire, deepen, and retain customer relationships while driving deposits, lending, credit card, and investment growth. Balance sales with operational risk management, partner with internal lines, promote digital banking, and complete the Branch Manager Readiness Program prior to placement.

What you need to know about the Colorado Tech Scene

With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.

Key Facts About Colorado Tech

• Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
• Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
• Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
• Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
• Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
• Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute

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