IES Systems Software Engineer interview questions & guide 2026

Our interview process is designed to uncover your technical depth, your familiarity with safety standards, and your ability to work independently in diverse manufacturing environments. While specific questions vary by team, the following patterns represent the core competencies we evaluate.

Technical Proficiency & Standards

These questions test your working knowledge of machine safety hardware and your ability to interpret industry-standard regulations.

• How do you approach the design of a safety system for a piece of legacy equipment?
• Can you explain your process for creating and reviewing electrical schematics?

Preparation at IES Systems requires a blend of theoretical knowledge and practical, hands-on experience. You should be able to articulate not just how a system works, but why it meets specific safety standards.

Technical Domain Knowledge – You must demonstrate a deep understanding of machinery safety, specifically regarding hardware like scanners, mats, and interlocks. Interviewers will look for your ability to connect these components to the relevant ISO/IEC/ANSI standards.

Analytical Rigor – We evaluate your ability to perform detailed risk assessments and translate those findings into actionable documentation. You should be prepared to discuss how you validate systems to ensure they function exactly as designed.

Autonomy and Adaptability – Because you will work at remote customer sites, we assess your ability to manage your own workflow and represent IES Systems professionally. Success here means demonstrating that you can solve problems independently while adhering to strict safety and company rules.

The interview process at IES Systems is designed to be thorough yet efficient, focusing on your ability to contribute to our mission of excellence in design and safety. You will typically engage in a series of discussions—ranging from technical screens to situational assessments—that gauge your readiness for both in-house engineering and field-based client interactions. We prioritize candidates who can demonstrate a "safety-first" mindset and a commitment to continuous improvement.

Expect a process that values direct, honest communication. We look for evidence that you can handle the physical and technical demands of the role, including the ability to travel and work in manufacturing settings. The pace is steady, and you should be prepared to provide concrete examples of your past work in machinery design, documentation, and testing.

This timeline outlines the typical progression from your initial application to the final evaluation. You should use this structure to pace your preparation, ensuring you have enough time to review your past technical projects and refresh your knowledge of safety standards before meeting with our engineering team.

Machine Safety Standards

Understanding the regulatory landscape is non-negotiable. We expect you to be comfortable discussing how standards like ISO12100 or ANSI B11.19 dictate your design choices.

Be ready to go over:

• Risk assessment methodology and documentation.
• Validation processes for safety-rated hardware.

As a Software Engineer (Electrical/Technician) at IES Systems, your primary responsibility is to design and analyze machinery safety systems that protect end-users. You will spend a significant portion of your time generating documentation, including risk assessments and machine manuals, ensuring that every project complies with industry standards.

• Design, install, and modify safety systems on both new and existing equipment.
• Act as a technical liaison between IES Systems and our customers, often working at their facilities to validate safety systems.
• Collaborate with proposal engineers and manufacturing personnel to ensure designs are feasible and meet client needs.
• Maintain rigorous documentation standards for every project, ensuring that all work is traceable and compliant with ISO/IEC/ANSI standards.

We are seeking a candidate who is as comfortable with a laptop and design software as they are with tools in a shop environment.

Must-have skills:

• Proficiency in AutoCAD for electrical schematic design.
• 2+ years of experience in machinery design and testing.
• Knowledge of IEC/ISO/ANSI machinery safety standards.
• Ability to travel up to 20% of the time to domestic and international customer sites.
• A technical degree or equivalent work experience.

Nice-to-have skills:

• Certifications such as TUV FSEng or B11 LMSS.
• Extensive field experience in manufacturing environments.
• Prior experience with complex Safety PLC programming and installation.

Q: What is the typical timeline from the initial screen to an offer? A: We aim to move efficiently. Once you have passed the initial technical screening, the process usually moves through 1–2 rounds of interviews, with a decision typically made within a few weeks.

Q: How much travel is actually required for this role? A: The role involves approximately 20% travel. You will be visiting customer plants to perform installations, validations, and modifications, so flexibility is a key requirement of the position.

Q: What differentiates a top-tier candidate? A: Beyond technical skills, we look for candidates who hold professional safety certifications and have a proven track record of working independently in manufacturing environments without needing constant supervision.

Q: Is there support for professional development? A: IES Systems is committed to continuous improvement. We value candidates who are interested in pursuing advanced certifications like TUV FSEng and support ongoing training relevant to machinery safety.

• Prepare your portfolio: Even if you cannot share proprietary designs, be ready to discuss the types of schematics you have produced and the complexity of the systems you have managed.
• Focus on the "Why": Don't just say you used a specific safety standard; explain why that standard was the right choice for that specific machine application.
• Emphasize independence: Since you will be working at customer sites, highlight examples where you had to make a critical decision on your own to keep a project moving safely.
• Know the hardware: Be prepared to talk about your hands-on experience with specific safety components like scanners and light curtains; we value candidates who understand how to wire and install what they design.

The Software Engineer role at IES Systems is a perfect fit for a dedicated engineer who wants to see their designs make a tangible difference in workplace safety. By mastering the intersection of electrical design, regulatory standards, and field execution, you will become an essential part of our team’s reputation for excellence.

Focus your preparation on the technical standards and your practical experience with safety hardware. You can explore additional interview insights, practice questions, and preparation resources on Dataford to sharpen your approach and build your confidence before your scheduled interviews.

The compensation data provided reflects the starting salary range for this position. Candidates should understand that this range is based on the technical requirements and the specific demands of the IES Systems environment, with potential for growth based on certifications and field experience.