ARSIEM is looking for a an experienced Senior HW/SW Design Engineer to join a small team to design, develop, construct, and test electronic hardware (FPGA) and software processing components for subsystems supporting RF communication and collection systems.  This position requires expertise in FPGA development, digital signal processing implementation, and software-hardware integration to support mission critical requirements. The contractor will lead technical design efforts, implement DSP algorithms and associated technical components in FPGA hardware, integrate with existing Linux code bases, bridge FPGA to software stack connection, plus document those efforts.  This role combines hardware design responsibilities (FPGA RTL development, timing closure, resource optimization) with software development (integration code, system-level software) to deliver complete subsystem solutions. This position will support one of our government clients in Annapolis Junction, MD.