Embedded Software Engineer - Multicore Platform & Avionics Networking

Unlock the power of Safety and Mission Critical Engineering with QDSS. We are seeking exceptional individuals to join our elite team- where your expertise will make an impact that matters. Elevate your career in a company dedicated to excellence and the pursuit of safety and mission success. 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/AFDX, or related ARINC communication standards—and development in 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.This position is preferred to be based in Endicott, NY, working in a hybrid/onsite capacity. We will consider remote candidates if they are available for an initial onboarding period in Endicott and can travel to the site quarterly thereafter. U.S. citizenship is required.What You’ll DoDesign, 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++.Experience developing very low-level, real-time embedded software, such as BSPs, boot code, device drivers, processor initialization, or platform software.Hands-on experience developing software for multicore processors or multicore SoCs.Experience with deterministic avionics networking or communications, including at least one of the following: Time-Sensitive Networking (TSN), ARINC 664 Part 7, or AFDX, or related ARINC avionics communication standards.Experience working within a DO-178B/C software development lifecycle.Experience with board bring-up, hardware initialization, or hardware/software integration.Experience interfacing embedded software with FPGA, ASIC, or other custom hardware.Experience debugging embedded systems using hardware debugging or trace tools.U.S. citizenship.Preferred Qualifications: Experience with ARM processor architecture and ARM-based SoCs.Experience with PCIe or other high-speed hardware interfaces.Experience with RTOS, bare-metal, or embedded Linux development.Experience analyzing timing, latency, concurrency, WCET, or deterministic system performance.Experience with ARM Development Studio, DSTREAM, or comparable processor-debugging tools.Experience using oscilloscopes, logic analyzers, and other laboratory equipment.Experience developing Python scripts for debugging, testing, or workflow automation.Familiarity with DO-254 and hardware/software design assurance activities.Active security clearance or the ability to obtain one.The QDSS Advantage: At QDSS, our advantage is purpose-driven work, collaborative teams, and complex challenges that push boundaries and build lasting impact. You’ll grow your career while contributing to mission-critical programs that demand excellence and shape the future. What You’ll Find Here Work That Matters – Next-generation, safety- and mission-critical projects where your contributions have real-world impact. Growth That’s Supported – Competitive compensation, employer-matched 401(k), certification assistance, and clear opportunities for advancement. A Culture That Works – A flexible, collaborative, and people-first environment where teamwork, innovation, and balance are valued. Benefits Include Competitive pay, comprehensive medical/dental/life and disability coverage, 401(k) with employer match, professional development support, and a flexible, friendly workplace.