Embedded Software Engineer - Real-Time Systems & Multicore

We are seeking a highly skilled Embedded Software Engineer specializing in deterministic real-time execution, multicore architecture, and certification-driven development.

In this role, you will work at the lowest levels of the software stack, enabling predictable execution across complex multicore processors and supporting safety-critical certification activities. You will collaborate closely with systems, hardware, and verification teams to ensure reliable, deterministic performance in avionics and other mission-critical environments.

This opportunity may be performed in a hybrid/onsite capacity in Endicott, NY. U.S. citizenship is required., * Develop and maintain low-level embedded software using C, C++, and assembly, with a focus on processor-level control and deterministic execution.

• Design, implement, and analyze multicore synchronization strategies including cache management, interference mitigation, and timing-aware resource coordination.
• Perform complex analytical evaluations such as Worst-Case Execution Time (WCET) assessments and DCCC (Deterministic Cache and Core Contention) analyses.
• Familiarity with DO-178C objectives, particularly within rigorous Level A verification environments and automated test frameworks.
• Integrate and validate interfaces with FPGA/ASIC components, ensuring reliable, timing-critical embedded communication.
• Apply proven experience in avionics, safety-critical, or deterministic real-time systems to guide architectural decisions and verification strategies.
• Use ARM DS IDE, DSTREAM, and Python-based automation tools for debugging, instrumentation, trace analysis, and workflow optimization.
• Participate in architecture discussions, design reviews, verification planning, and continuous improvement of real-time multicore development processes.

• U.S. citizenship is required.
• Bachelor's degree in software engineering or a related engineering discipline with 4+ years of relevant Software Engineering experience in avionics or electronic controls embedded development in a safety or mission-critical environment (ie: aerospace, military).
• Demonstrated expertise in low-level embedded software development in C, C++, and assembly.
• Hands-on experience with multicore synchronization, S32 Processor family, cache behavior, interference channels, and deterministic execution strategies.
• Ability to perform sophisticated analysis, including WCET and DCCC evaluations.
• Familiarity with DO-178C certification practices, especially Level A verification environments and associated test infrastructures.
• Proven experience in avionics, safety-critical, or other deterministic real-time domains.
• Experience with FPGA/ASIC interfaces and timing-critical embedded communication protocols.
• Proficiency with ARM DS IDE, DSTREAM, and Python for tooling, automation, and analysis., * Prior experience with multicore processor architectures in avionics, aerospace, defense, or other safety-critical embedded systems.
• Hands-on experience with deterministic execution analysis, timing closure, interference analysis, or resource contention mitigation.
• Familiarity with the S32 processor family or similar ARM-based multicore platforms.
• Experience developing or supporting automated test frameworks, Python-based tooling, trace analysis, or debug instrumentation.
• Experience working closely with FPGA, ASIC, hardware, systems, or verification teams in an integrated engineering environment.
• Familiarity with low-level processor features such as cache configuration, memory management, interrupts, boot code, device drivers, or board support packages.
• Experience participating in software architecture reviews, certification reviews, or technical customer discussions.
• Active security clearance or ability to obtain a clearance.

3.33.3 out of 5 stars Endicott, NY Hybrid work $100,000 - $140,000 a year, Pulled from the full job description

• Health insurance
• 401(k) matching
• Dental insurance
• Disability insurance
• Opportunities for advancement, 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.

At Quest Defense Systems and Solutions, we don't just build technology - we engineer the future. From next-generation aerospace solutions to cutting-edge defense systems, we tackle the toughest, mission-critical challenges that keep people safe and push the boundaries of innovation. This is where problem-solvers, innovators, and visionary thinkers come together to shape the future. With over 25 years of aerospace and defense engineering expertise, our commitment to delivering high-quality, transformative solutions sets us apart - not just as an industry leader, but as a driving force for impactful change. Together, we're not just leading the industry - we're revolutionizing it.