Great River Technology Software Engineer interview questions & guide 2026

The following questions are representative of the patterns observed in our interview process. While specific inquiries will vary based on the team and the current product cycle, these categories highlight the core competencies we evaluate.

Technical Domain Knowledge

These questions test your understanding of the low-level systems and hardware-software interaction required for our products.

• How do you optimize C++ code for memory-constrained, real-time environments?
• Explain the role of DMA (Direct Memory Access) in high-throughput data transmission.

Success at Great River Technology requires a blend of rigorous technical precision and a pragmatic, solution-oriented mindset. You should approach your preparation by connecting your past technical accomplishments to the specific constraints of hardware-centric software development.

Domain Expertise – We expect a deep understanding of C/C++ and real-time systems. You should be prepared to discuss how you have navigated the trade-offs between hardware efficiency and software maintainability in previous roles.

System Thinking – You will be evaluated on your ability to see the "big picture." It is not enough to write clean code; you must understand how your code interacts with the underlying hardware architecture and affects system-wide performance.

Problem Solving – We look for candidates who can methodically troubleshoot complex, multi-layered issues. Use the STAR method (Situation, Task, Action, Result) to frame your experiences, focusing on the technical complexity you overcame.

The interview process at Great River Technology is designed to be rigorous, focusing on technical competency, architectural intuition, and cultural alignment. You should expect a sequence that begins with a technical screening, followed by deep-dive sessions with engineering leadership, and culminating in an assessment of your problem-solving approach in a collaborative environment. We value depth over breadth, so be prepared to defend your technical decisions in detail.

This timeline outlines the typical path from initial contact to final decision. Candidates should use this as a guide to manage their energy, ensuring they remain focused on the technical fundamentals during the early stages while preparing to discuss broader architectural strategies in the later rounds.

Low-Level System Programming

This area is the cornerstone of the Software Engineer role. We evaluate your mastery of languages and concepts that allow software to interact directly with hardware.

Be ready to go over:

• Memory Management – Techniques for manual memory allocation and avoiding leaks in real-time systems.
• Concurrency – Handling multi-threading, mutexes, and semaphores to prevent race conditions.

As a Software Engineer at Great River Technology, you will be responsible for the full lifecycle of software components that drive our airborne hardware. You will spend your day writing and refining high-performance code, collaborating with hardware engineers to ensure seamless integration, and conducting rigorous testing to ensure compliance with strict industry standards.

You will often find yourself acting as a bridge between the software team and the hardware team, translating complex hardware requirements into efficient software logic. You will also be responsible for maintaining legacy systems, which involves deep-diving into existing codebases to identify and implement performance enhancements or bug fixes. The work is highly collaborative and requires a proactive approach to communication, as your software is often the final layer that brings the hardware to life.

We are looking for individuals who possess a strong foundation in systems engineering and a passion for working on complex, hardware-integrated systems.

• Must-have skills:
  • Proficiency in C/C++ for embedded systems.
  • Strong understanding of RTOS (Real-Time Operating Systems).
  • Experience with hardware communication protocols (e.g., PCIe, I2C, SPI).
  • Ability to read and interpret hardware schematics and data sheets.
• Nice-to-have skills:
  • Experience with FPGA development or integration.
  • Background in signal processing or digital communications.
  • Familiarity with aerospace or defense industry standards (e.g., DO-178C).

Q: How much time should I spend preparing? A: We recommend at least 2–3 weeks of focused study. Reviewing your past projects and refreshing your knowledge of low-level C++ concepts is generally more effective than broad, generic coding practice.

Q: Is this role fully remote? A: Due to the nature of our work with airborne hardware, this position requires on-site collaboration in the specified location to ensure direct access to the hardware labs and engineering teams.

Q: What differentiates a successful candidate? A: The most successful candidates are those who can clearly explain the why behind their technical choices. We value engineers who understand the hardware constraints as well as they understand their code.

• Show Your Work: When solving coding problems, talk through your thought process out loud. We are as interested in how you approach a problem as we are in the final solution.
• Know Your Fundamentals: Do not skip the basics. A deep understanding of pointers, memory layout, and processor architecture will serve you better than knowing the latest web frameworks.
• Be Honest About Ambiguity: If you don't know the answer to a specific hardware question, explain how you would go about finding the answer (e.g., consulting the datasheet or testing the interface).

The Software Engineer position at Great River Technology is a challenging and rewarding role for those who are passionate about the intersection of software and physical hardware. By focusing your preparation on low-level systems programming, architectural trade-offs, and clear communication of your technical problem-solving, you will be well-positioned to succeed in our interview process.

Remember that our team is looking for engineers who are not only technically proficient but also curious and collaborative. We encourage you to reflect on your career experiences and identify the moments where you had to bridge the gap between software and hardware, as these stories will be your greatest assets during the interview. We look forward to seeing the unique perspective you can bring to our engineering team.