I led firmware bring-up across more than 15 MCU-based subsystems within the sequencing platform, enabling reliable communication and coordinated control between sensors, actuators, and fluidic components. This involved defining interfaces, bringing new hardware online, and ensuring subsystems operated correctly both independently and as part of the larger system. In parallel, I developed control-layer components within a Linux-based C++ environment to interface with custom MCU firmware. The work required careful coordination of timing, data flow, and system state across multiple layers, where small inconsistencies could cascade into broader system issues if not addressed early. A significant portion of the role focused on system-level verification and integration, ensuring correct sequencing of operations and timing behavior under complex workflows. Many issues only emerged through subsystem interaction, requiring a methodical approach to tracing behavior across hardware and software boundaries to identify and resolve root causes. The work was highly cross-disciplinary, involving close collaboration with electrical, software, and scientific teams to ensure the system operated reliably as a cohesive whole. The end result was a platform that behaved predictably under real operating conditions, not just in isolated testing.