Embedded Real-Time Engineer — Multicore Avionics

Quest Defense; United States; Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

401(k) matching

Certification assistance

Professional development

Flexible workplace

Job summary

Quest Defense Systems & Solutions is seeking a highly skilled Embedded Software Engineer to join our avionics-focused team in Endicott, NY. The role emphasizes deterministic real-time execution, multicore architectures, and DO-178C certification support.

You will work at the lowest levels of the software stack, developing in C, C++, and assembly, and collaborating with hardware and verification teams to ensure predictable, timing-critical performance across safety-critical environments. U.S.

Qualifications

• U.S. citizenship is required.
• Bachelor’s degree in software engineering or 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).
• Expertise in low-level embedded software development in C, C++, and assembly.
• Experience with multicore synchronization, NXP S32 Processor family, cache behavior, interference channels, and deterministic execution strategies.
• Ability to perform WCET and DCCC evaluations.
• Familiarity with DO-178C certification practices, especially Level A verification environments and associated test infrastructures.
• Experience with 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.
• Familiarity with the S32 processor family or similar ARM-based multicore platforms.

Responsibilities

• Develop and maintain low-level embedded software using C, C++, and assembly, with a focus on processor-level control and deterministic execution.
• Design multicores 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.

Skills

C

C++

Assembly

Multicore synchronization

WCET analysis

DCCC analysis

DO-178C

ARM DS IDE

DSTREAM

Python tooling

S32 Processor family

Education

Bachelor’s degree in software engineering or related engineering discipline

Tools

DSTREAM

Python

Job description

Quest Defense Systems & Solutions is seeking a highly skilled Embedded Software Engineer to join our avionics-focused team in Endicott, NY. The role emphasizes deterministic real-time execution, multicore architectures, and DO-178C certification support.

You will work at the lowest levels of the software stack, developing in C, C++, and assembly, and collaborating with hardware and verification teams to ensure predictable, timing-critical performance across safety-critical environments. U.S.