REXA Software Engineer interview questions & guide 2026

The following questions represent the types of inquiries you may encounter during your interview journey at REXA. While the process can vary by team, focus on demonstrating your ability to solve technical problems while maintaining a clear, logical thought process.

Technical and Embedded Knowledge

These questions assess your foundational understanding of software development, specifically within the context of hardware interaction and embedded systems.

• How would you approach a task involving character manipulation in C or C++?
• What is your experience with embedded software development and real-time constraints?

Preparation at REXA requires a balance of theoretical coding knowledge and a practical, "factory-floor" mindset. You should be ready to demonstrate not just that you can write code, but that you understand the physical systems that code will eventually control.

Role-related knowledge – You must be proficient in the technical languages and methodologies relevant to embedded systems. Interviewers look for evidence that you understand the constraints of working with actuators and flow control equipment.

Problem-solving ability – You will be evaluated on your ability to break down complex, multi-layered problems. Whether you are debugging a communication protocol or optimizing a control loop, your ability to articulate your thought process clearly is as important as the final solution.

Culture fit and technical curiosity – REXA values engineers who are interested in the physical assembly and testing of products. Showing an genuine interest in the factory and R&D operations during your visit will signal that you are a candidate who wants to be involved in the full product lifecycle.

The interview process at REXA is designed to evaluate both your technical technical acumen and your ability to work within a manufacturing-focused engineering culture. You should expect a process that prioritizes direct interaction with the team, often involving an in-person component that includes a tour of the facility. The pace can be rapid, and you may find yourself speaking with both management and technical peers early in the process.

The company values a collaborative, onsite approach. Because the software is so closely tied to the hardware, the interviewers want to see how you react to being in a facility where engineering and production happen side-by-side. Expect an environment that is less about abstract theory and more about practical, real-world application.

This visual timeline illustrates the typical progression from initial screening to onsite assessment. Candidates should use this as a guide to prepare for a multi-stage process where technical depth and cultural compatibility are assessed in equal measure. Expect the onsite portion to be a significant commitment, often involving multiple stakeholders from the engineering team.

Embedded Systems and Control Logic

This area is the cornerstone of the Software Engineer role. You will be evaluated on your ability to write efficient, reliable code that handles hardware inputs and outputs. Strong performance here means demonstrating a mastery of low-level programming and an understanding of how software impacts the physical behavior of an actuator.

Be ready to go over:

• Memory management and optimization in constrained environments.
• Real-time operating system (RTOS) concepts or bare-metal programming.

As a Software Engineer at REXA, you will primarily focus on developing and maintaining the software that controls high-performance valves and actuators. Your responsibilities include writing robust firmware, developing diagnostic tools, and participating in the integration testing of new products. You will work closely with the R&D team to turn engineering requirements into functional, reliable code.

Collaboration is essential. You will regularly interact with application engineers to understand specific customer needs and with production teams to ensure software updates are correctly implemented during the manufacturing process. You will be expected to manage the software lifecycle, from initial design and prototyping to final verification and documentation.

A competitive candidate for this position brings a blend of technical discipline and a hands-on approach to engineering. While specific requirements may vary by the seniority of the role, the following are generally expected:

• Must-have skills – Proficiency in C/C++, experience with embedded systems, and a strong understanding of control logic.
• Nice-to-have skills – Familiarity with industrial automation, knowledge of communication buses like CAN or Modbus, and experience with version control systems.
• Experience – Prior experience in a manufacturing or electromechanical environment is highly valued. Candidates should be comfortable working in a facility setting, not just a desk-bound environment.

Q: How long does the interview process typically take? A: While it can vary, many candidates move through the screening and onsite stages within a few weeks. The process is designed to be efficient, but scheduling depends on the availability of the engineering team.

Q: What is the most important thing to emphasize during the interview? A: Emphasize your practical, "hands-on" experience. Show that you are comfortable working in an environment where software meets physical hardware and that you have a methodical approach to debugging.

Q: Is there a specific culture I should be aware of? A: REXA values engineering excellence and reliability. You should be prepared for a culture that is focused on precision and industrial-grade quality, rather than a fast-paced "move fast and break things" environment.

Q: How much of the interview is technical versus behavioral? A: Expect a heavy emphasis on technical and problem-solving skills. Behavioral questions are usually framed around how you work within a team to solve engineering problems.

• Prepare for the site tour: If your interview includes a tour, show genuine interest. Ask questions about the products you see on the floor.
• Focus on C/C++: Since this is an embedded role, ensure your knowledge of memory management and low-level concepts is sharp.
• Clarify the challenge: If a technical question seems vague, ask for more context about the hardware constraints before you start coding.
• Leverage your experience: Use the STAR method (Situation, Task, Action, Result) to structure your answers, especially when discussing past projects or debugging experiences.

The Software Engineer role at REXA is an opportunity to contribute directly to the performance of high-end industrial hardware. By focusing your preparation on embedded fundamentals, demonstrating a logical approach to problem-solving, and showing a genuine interest in the intersection of code and physical systems, you will be well-positioned to succeed.

Remember that you can explore additional interview insights, practice questions, and preparation resources on Dataford. Thorough preparation will provide you with the confidence needed to navigate the technical and cultural aspects of the interview process effectively.

The compensation data provided above reflects the salary ranges for various engineering roles at REXA. Candidates should interpret these figures as the base pay expectations for the region, keeping in mind that total compensation may also include benefits and other incentives depending on the seniority and specific scope of the position.