Software Engineer

Infleqtion•Louisville, CO

22h•$120,000 - $145,000

About The Position

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.

Requirements

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 Haves

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.

Responsibilities

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