Software Engineer

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 and Solutions is seeking a highly skilled Software Engineer to join our team where we are building the foundational software components that enable next-generation avionics systems. The Core Services & Libraries (CS&L) team is responsible for developing shared libraries, I/O frameworks, and partitioned services that power multiple avionics applications. This role is ideal for a systems-minded engineer with deep low-level experience who can design robust, certifiable software architectures.

Due to the nature of this role- all candidate MUST be a U.S. citizen or US Person.

Key Responsibilities:

• Abstract and consolidate core functions into reusable libraries and frameworks

• Extract existing functionality from application code and refactor for shared use

• Design and implement an I/O framework supporting multiple protocols and data interfaces

• Define and maintain data dictionaries and I/O level specifications

• Collaborate with system architects to ensure ARINC-653 partitioning integrity

• Support certification activities through HLR/LLR documentation and DAL compliance

• Contribute to long-term strategy for scalable, maintainable software infrastructure

Required Skills & Qualifications:

• 4- 8 years of experience in C++ and object-oriented design for embedded systems

• Working knowledge of I/O architecture, protocol handling, and data management

• Background in developing certifiable software (DO-178 DAL A preferred)

• Proficiency in HLR/LLR generation, review, and traceability

• Quick learner with strong initiative and drive

Preferred Qualifications:

• Strong experience with ARINC-653 partitioning and low-level application design

• Hands-on experience with VxWorks RTOS

• Familiarity with toolchains and CI/CD environments supporting configuration management and verification (Atlassian Suite, Jama, Coverity, Rapita, etc)

• Designed and implemented non-volatile data storage systems (e.g., EEPROM, flash, or NVRAM) for configuration or state retention

• Experience with persistent and transient log storage, including rollover and data retention policies

• Familiarity with log transport mechanisms (e.g., shared memory, I/O channels, or network-based telemetry)

• Experience developing or integrating ARINC 661 Cockpit Display Systems (CDS) and User Applications (UA)

• Familiarity with avionics data buses and communication protocols (e.g., ARINC-429, MIL-STD-1553, AFDX, CAN, SPI, UART, etc)

• Strategic systems thinker able to plan scalable, reusable frameworks

• Previous FMS Experience is a bonus but not required.

Why QDSS Solutions:

We’re a family-like-company. We are collaborative. We believe in embracing change. We believe in doing consistent good work. QDSS houses smart, curious and passionate about “making a difference” people. Our company culture sets us apart from others as well as:

• 401k with Employer-Match Contributions

• Medical, Dental, and Life coverage

• Disability Benefits

• Generous compensation structure

• Significant opportunities for advancement

• Next Generation / Cutting Edge Technology Projects

• Certification Assistance Available (Approval Required)

• Flexible, Friendly and Fun work environment

About Us

At QDSS, we are more than an engineering company—we are a force for innovation and positive change. With over 25 years of proven expertise in solving mission-critical challenges, we empower our team to push boundaries, combining deep industry knowledge, cutting-edge technology, and a collaborative "think tank" approach.

Our vision is to be the trusted partner of choice for our defense and aerospace clients, delivering secure, sustainable, and world-class solutions that build a brighter future.