# Software Engineer

> Infleqtion · Louisville, United States · — · Posted 2026-03-06

**Workplace:** on_site

**Department:** Quantum Sensing Solutions

## Description

**Description**

Infleqtion is on a mission to commercialize atom-based quantum technologies that deliver orders-of-magnitude improvements in sensing and computing applications. As a deep-tech startup, we embrace a results-driven, fast-paced, and customer-focused approach to innovation.

We are seeking a Software Engineer with deep expertise in Rust and familiarity with embedded systems development to join our cross-functional engineering team. In this role, you’ll work across the stack—from low-level embedded Rust and gateware integration to higher-level Rust application interfaces, with exposure to frontend technologies. You’ll collaborate closely with hardware, firmware, and application teams to build reliable, high-performance systems.

While a physics background is not required, experience working with physical systems or scientific instrumentation is beneficial. The ideal candidate is fundamentally a software engineer, with strong embedded systems intuition and a commitment to continually deepening their technical expertise.

**Job Responsibilities**

The duties and responsibilities listed below describe the essential functions of the role. Actual responsibilities may vary based on business needs and may change or expand over time.

-   Collaborate closely with cross-functional teams—including hardware engineers, physicists, and software developers—to deliver fully integrated product solutions. 
-   Maintain documentation of designs, workflows, and processes in compliance with internal and regulatory standards. 
-   Contribute to integrating Rust-based middleware and driver software used for device control.
-   Collaborate with hardware and FPGA teams to develop software drivers and interfaces for embedded devices.
-   Develop and maintain **system-level APIs** and communication layers
-   Contribute to **frontend development** where needed to support tooling, visualization, or user interfaces
-   Write clean, well-tested, and well-documented code
-   Participate in code reviews and technical design discussions

## Requirements

**Qualifications: Education & Experience**

-   Bachelor’s degree in computer science, Electrical or Computer Engineering, or a related technical discipline (or equivalent practical experience)
-   Minimum of 5 years of industry experience in Rust Development
-   Exposure to embedded software development using Rust and/or C++.
-   Working knowledge of gateware development and hardware/software integration (e.g., FPGA-based systems)
-   Exposure to frontend development (e.g., JavaScript/TypeScript, React, or similar frameworks).
-   Strong background in developing and debugging embedded Linux environments. 
-   Familiarity with embedded and system-level communication interfaces (SPI, I²C, UART, PCIe, Ethernet, etc.)
-   Solid understanding of systems programming concepts (memory safety, concurrency, performance)

**Nice to Have** 

-   Background in high-reliability or performance-critical systems
-   Knowledge of WebAssembly (WASM) and Rust-based frontend frameworks
-   Familiarity with real-time operating systems (RTOS) and bare-metal development. 
-    Demonstrated experience in architecting embedded control systems and integrating them into hardware platforms. 

**We highly value**

-   Excellent verbal and written communication skills, with the ability to effectively share information with both technical and non-technical audiences
-   Strong collaboration and engagement skills, with a sense of ownership, pride in your work, and a constant drive for success
-   A strong sense of urgency and responsibility, paired with attention to detail where it matters most
-   An open communication style and a positive, professional attitude reflected in daily work habits
-   Strong problem-solving skills and the ability to learn quickly in new domains
-   The ability to work with a high degree of autonomy—taking high-level goals and defining, resourcing, and executing an effective plan—while also collaborating closely and incorporating feedback from teammates as needed

## Benefits

-   Salary range:  $106,000 to $145,000

-   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

## Apply

[Apply at Infleqtion](https://apply.workable.com/coldquanta/j/F2A200DB8F/apply)

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