Sr. Firmware Engineer

ZimZee Recruiting is looking for a Senior Embedded Software Engineer (Firmware & Fully Remote). This position offers the opportunity to develop and own embedded firmware for high-precision flow and pressure instrumentation used in aerospace, bioprocessing, energy, environmental science, and advanced research. The ideal candidate brings strong embedded C development experience, real-time systems expertise, and a proven ability to take firmware from initial hardware bring-up through production release.

Skills and Requirements

• A bachelor's degree in Computer Engineering, Electrical Engineering, Computer Science, or a related field is valued.
• 6+ years of professional embedded software development experience using C on microcontrollers, including firmware deployed in production products.
• Strong understanding of real-time embedded systems, including interrupt-driven architectures, memory management, deterministic timing, and RTOS-based or bare-metal development.
• Demonstrated experience owning firmware modules throughout the development lifecycle, from design and implementation through testing and production release.
• Hands-on hardware bring-up and debugging experience using JTAG/SWD, oscilloscopes, logic analyzers, and embedded development toolchains.
• Proficiency with Git, automated testing, static analysis, and embedded software development best practices.
• Experience with ARM Cortex microcontrollers, FreeRTOS, and embedded control architectures is valuable.

Key Responsibilities

• Design, develop, and maintain embedded C firmware for precision flow and pressure instrumentation, including closed-loop control algorithms, digital filtering, calibration routines, device drivers, and hardware abstraction layers.
• Develop and support communication interfaces, industrial protocols, bootloaders, firmware update mechanisms, device configuration, diagnostics, and logging capabilities.
• Collaborate with electrical engineering teams on hardware bring-up, troubleshooting, and debugging at the register, signal, and system levels.
• Improve firmware quality and reliability through unit testing, integration testing, hardware-in-the-loop testing, continuous integration, and automated validation.
• Contribute to embedded system architecture, technical design reviews, coding standards, software release processes, and ongoing improvements to established firmware platforms.
• Partner with product management, applications engineering, and other technical teams to translate customer requirements into practical firmware solutions while supporting manufacturing testing and field diagnostics.
• Take ownership of critical firmware subsystems and support new product development from initial prototype through production deployment and ongoing maintenance.