Firmware Engineer; Embedded C

Join our team at the Alicat Scientific headquarters in Tucson, Arizona! About Alicat Scientific

At Alicat ® , engineers design hardware and firmware that are built, tested, and manufactured under the same roof, giving you direct ownership and immediate impact on real products.

We specialize in high-performance instrumentation for measuring and controlling flow and pressure. Our products support aerospace, bioprocessing, energy, environmental science, and advanced research, where precision, stability, and reliability are essential.

Our engineering environment is tightly integrated and highly collaborative. We avoid bureaucracy, make decisions quickly, and value engineers who take ownership and enjoy solving real technical problems.

All our instruments are built in-house at our Tucson, Arizona facility. This vertical integration gives engineers full visibility from concept through production, enabling rapid iteration and strong cross‑functional collaboration.

Alicat’s mission is to accelerate the evolution of science and technology by giving researchers and innovators the tools to explore, build, and solve complex challenges. We are part of Halma plc, a global FTSE 100 group focused on growing a safer, cleaner, healthier future. Through Halma, we benefit from long‑term stability and investment while maintaining the agility and culture of a mid‑sized engineering team.

If you want to work at the intersection of physics, electronics, and embedded systems and help build instrumentation that enables the next generation of technological breakthroughs, Alicat is an exceptional place to do it.

As a Firmware Engineer at Alicat Scientific, you will design, implement, and maintain embedded firmware that powers our high‑precision flow and pressure instrumentation systems. You will write robust, deterministic firmware that directly controls sensors, valves, communication interfaces, and calibration systems operating in demanding real‑world environments.

You will work at the boundary between electronics and physics, implementing real‑time control algorithms, signal processing routines, and communication protocols that must perform with stability and accuracy across wide dynamic ranges. Your firmware will interact closely with precision analog circuitry, digital control systems, and production calibration processes.

Collaboration is central to this role. You will work closely with Electrical, Mechanical, Software, and Test Engineering to ensure seamless system integration from early hardware bring‑up through validation, production release, and long‑term sustainment.

This is a deeply hands‑on role focused on writing production code. You will own meaningful firmware deliverables under the guidance of senior engineers, contribute to architecture discussions, participate in code reviews, and grow your embedded systems expertise within a fast‑iteration, vertically integrated engineering environment.

Based full‑time at our Tucson, Arizona facility, you will have full visibility into the product lifecycle and contribute to firmware outcomes from development through manufacturing release and field support of new products.

• Implement embedded firmware in C for advanced flow and pressure control instruments.
• Contribute to modular, scalable firmware architectures supporting long product life cycles.
• Develop real‑time control systems including PID loops, filtering algorithms, and calibration routines.
• Implement hardware abstraction layers and drivers for ADCs, DACs, timers, PWM, DMA, EEPROM/Flash, and sensor interfaces.
• Integrate communication interfaces including UART, SPI, I²C, USB, RS232/RS485, CAN, and industrial protocols such as Modbus, Ether Net/IP, IO-Link, and related standards.
• Contribute to bootloaders, firmware update strategies, and diagnostic systems.
• Debug firmware at the register and hardware level using JTAG/SWD, oscilloscopes, and logic analyzers.
• Collaborate with Electrical Engineering during hardware bring‑up and root cause analysis.
• Improve code reliability and maintainability through structured reviews, static analysis, and test strategies.
• Contribute to CI/CD build processes and version…