Embedded Software Engineer - Multicore Platforms & Avionics Networking

We don’t just build technology—we engineer the future. From next-gen aerospace to cutting-edge defense systems, we tackle the toughest, mission-critical challenges that keep people safe and push the limits of innovation. This is where problem-solvers, innovators, and big thinkers thrive. Quest Defense Systems & Solutions is seeking an Embedded Software Engineer with experience developing low-level software for multicore processors and System-on-Chip platforms. This role requires hands-on experience with deterministic avionics networking—particularly Time-Sensitive Networking, ARINC 664 Part 7/AFDX, or related ARINC communication standards—as well as development within a DO-178 environment. You will work at the intersection of software and hardware, developing processor-level software, enabling new hardware platforms, and integrating multicore systems with FPGA, ASIC, and other custom hardware. Location: Remote candidates will be considered provided they are available for an initial onboarding period in Endicott, NY and can travel to the site on a quarterly basis thereafter. Citizenship: U.S. citizenship is required What You’ll Do Design, develop, and maintain low-level embedded software using C, C++, and Assembly. Develop software for multicore processors and SoCs, including processor initialization, inter-core communication, synchronization, shared-resource management, and deterministic execution. Develop and integrate deterministic avionics networking solutions using TSN, ARINC 664 Part 7/AFDX, PCIe, and related real-time communication technologies. Develop board support packages, boot code, device drivers, and other platform-level software. Support new hardware bring-up, board initialization, and hardware/software integration. Integrate embedded software with FPGA, ASIC, and custom hardware components. Develop software in accordance with DO-178B/C processes and applicable safety-critical requirements. Analyze and troubleshoot timing, latency, concurrency, and real-time performance issues. Debug processor- and board-level software using hardware debuggers, trace tools, oscilloscopes, logic analyzers, and related laboratory equipment. Develop Python-based tools to support debugging, testing, automation, and integration. Collaborate with software, hardware, FPGA, ASIC, systems, and verification engineers throughout the development lifecycle. Participate in software architecture, design reviews, testing, technical documentation, and continuous process improvement. Required Qualifications Bachelor’s degree in Computer Engineering, Software Engineering, Electrical Engineering, Computer Science, or another relevant STEM discipline. 4+ years of embedded software or firmware development experience in aerospace, avionics, defense, or another safety- or mission-critical environment. Strong programming experience with embedded C and C++.