TWIG Power Software Engineer interview questions & guide 2026

The following questions are representative of the themes we explore during our hiring process. While specific inquiries will vary based on your technical focus—such as controls, systems, or electrical engineering—these examples illustrate the types of problems you will be expected to solve.

Technical and Domain Expertise

These questions test your foundational knowledge of control theory, electrical systems, and software architecture. Expect to discuss your experience with industry-standard protocols and your ability to apply them to real-world power challenges.

• Explain your process for debugging a complex control loop in a real-time system.
• How do you ensure the safety and reliability of software that interacts with high-voltage hardware?

Preparation at TWIG Power should focus on demonstrating both technical depth and a disciplined engineering mindset. You should be ready to articulate not just what you have built, but why you made specific architectural choices and how those choices impacted the final product.

Role-Related Knowledge – You must demonstrate mastery over the specific engineering domain relevant to your track, whether that is control theory, system validation, or electrical design. We evaluate your ability to apply theoretical concepts to practical, real-world power applications.

Technical Problem-Solving – We assess your ability to decompose complex, multi-layered problems. You should be prepared to walk through your thought process, identifying constraints and potential failure points before proposing a solution.

Systemic Thinking – Because our work involves hardware-software integration, understanding the "big picture" is critical. You will be evaluated on your ability to consider how a software change affects the broader electrical system and the end-user experience.

The interview process at TWIG Power is designed to mirror the collaborative, high-rigor environment you will face on the job. We prioritize a deep understanding of your technical background and your capacity to solve problems that bridge the gap between software and hardware. You can expect a process that is deliberate and focused on finding engineers who thrive in technical ambiguity.

This timeline outlines the typical progression from your initial introduction to our team through the final technical evaluations. Candidates should use this as a roadmap to pace their preparation, ensuring they are ready to dive into both high-level system design and granular technical debugging at the appropriate stages.

Control and System Architecture

This area is fundamental to our core products. We look for candidates who understand how to design robust, fault-tolerant systems that interact with physical power hardware.

Be ready to go over:

• Control Loops – Designing and tuning loops for stability and responsiveness.
• Hardware Integration – Managing communication between software and physical components.

As a Software Engineer here, you will operate at the intersection of development and deployment. Your daily work involves designing system architectures, writing and refining control code, and collaborating with cross-functional teams to bring new energy products to life. You will spend significant time in the lab or simulation environments, ensuring that the software you write translates into predictable, safe, and efficient hardware performance.

You will work closely with other engineering disciplines, including hardware and systems teams, to resolve integration challenges. This requires not only technical proficiency but also the ability to communicate complex technical constraints to stakeholders who may not share your exact background. You will lead or support initiatives that range from feature-set expansion to critical system maintenance and optimization.

A successful candidate for this role possesses a blend of deep technical skill and a pragmatic approach to engineering. We value engineers who are comfortable working with hardware-in-the-loop systems and who possess the resilience to solve difficult integration issues.

• Must-have skills – Proficiency in relevant programming languages (such as C/C++), experience with real-time systems, and a strong foundation in control theory or electrical engineering principles.
• Nice-to-have skills – Familiarity with power electronics, experience with industry-standard communication protocols (e.g., CAN, Modbus), and a background in automated testing frameworks.

We generally look for candidates who have demonstrated the ability to own a project from the design phase through to implementation and validation. While we consider various experience levels, your ability to demonstrate technical maturity and sound judgment is the most important factor in your evaluation.

Q: How much preparation time is recommended? A: Most successful candidates spend 2–3 weeks reviewing their core engineering fundamentals and reflecting on their past projects. Focus on being able to explain the "why" behind your previous technical decisions.

Q: What differentiates top-tier candidates? A: The best candidates are those who can bridge the gap between software logic and physical reality. They think about the system holistically, anticipating how their code will impact hardware performance and safety.

Q: Is this a remote role? A: Given the nature of our work, which requires frequent interaction with hardware and lab environments, this role is primarily based in our Novi, MI facility.

Q: How long does the process take from start to finish? A: While timelines can vary based on the specific team and role, we aim to move efficiently. You can generally expect the process to conclude within 4–6 weeks from your first screen.

• Own your past projects: Be prepared to dive deep into any project on your resume. We will ask about your specific contributions, the challenges you faced, and what you would do differently today.
• Focus on trade-offs: In engineering, there is rarely a perfect solution. Show us you understand the trade-offs—speed vs. safety, cost vs. complexity—inherent in your designs.
• Practice articulating your thought process: We are looking for clear, logical communication. Practice talking through your problem-solving steps out loud as you work through practice problems.

The Software Engineer position at TWIG Power offers a unique opportunity to shape the future of energy infrastructure. You will be challenged to apply your technical expertise to real-world problems that demand both innovation and rigorous validation. By focusing your preparation on system-level thinking, control theory, and clear communication of your technical methodology, you will be well-positioned to succeed.

We encourage you to explore additional interview insights, practice questions, and preparation resources on Dataford to refine your skills further. Remember that every interview is an opportunity to showcase your engineering mindset and your alignment with our mission.

The compensation data above reflects the market range for various engineering tracks at TWIG Power. Candidates should interpret these figures as a starting point for discussion, as total compensation packages are tailored based on individual experience, technical specialization, and the specific requirements of the team.