A controls engineer vacancy can slow far more than one project. It can delay a machine startup, stretch maintenance teams thin, create programming bottlenecks, and leave production leaders waiting for answers during a costly downtime event. Knowing how to hire controls engineers means looking beyond a resume that lists PLCs and SCADA platforms. The right person must be able to apply those tools in your operating environment, communicate clearly with the plant floor, and solve problems safely under pressure.
For Ohio manufacturers, OEMs, system integrators, and industrial operations, that distinction matters. Controls talent is specialized, and the hiring process needs to be equally specific.
Start With the Work, Not a Generic Job Title
“Controls engineer” can describe several very different jobs. One company may need an engineer to design panels, write PLC code, and commission equipment at customer sites. Another may need an in-plant expert focused on troubleshooting, continuous improvement, and supporting legacy equipment. A third may need a project engineer who can manage vendors, electrical drawings, safety systems, and capital projects.
Before posting the role, define what the person will actually own in the first 90 days and the first year. Ask which systems create the most downtime, whether the role is new or a replacement, how much travel is required, and where the engineer fits between maintenance, operations, IT, and project management. These answers should shape the job description, interview process, and compensation range.
A vague requirement such as “PLC experience required” attracts vague applications. A useful requirement identifies the real technical environment: Allen-Bradley or Siemens platforms, FactoryTalk or Wonderware, robotics integration, motion control, machine vision, VFDs, safety circuits, industrial networks, or HMI development. Be precise without creating a wish list that eliminates strong engineers who can learn an adjacent platform.
How to Hire Controls Engineers for Your Environment
Technical fit is not just about software familiarity. A controls engineer who has spent years programming high-speed packaging lines may be excellent, but the ramp-up for a batch process, automotive assembly operation, water treatment facility, or custom machine builder may still take time. That does not make the candidate wrong. It means the hiring team should understand which experience is essential on day one and which can be developed after hire.
Separate your requirements into three categories: non-negotiable capabilities, preferred experience, and trainable skills. For example, your non-negotiables may include PLC troubleshooting, electrical safety awareness, and the ability to read schematics. Preferred experience may include a particular HMI package or robotics brand. Trainable skills may include your internal documentation process, a legacy controller family, or a specific customer’s standards.
This approach expands the candidate pool without lowering the bar. It also gives experienced candidates confidence that you are hiring a problem-solver, not searching for an impossible resume match.
Write a Job Description That Technical Candidates Respect
Strong controls engineers can spot a poorly defined opportunity quickly. If the job description suggests one person will be responsible for every electrical, IT, maintenance, engineering, and project-management problem in the facility, qualified candidates may not apply.
State the equipment and systems involved, the primary responsibilities, reporting structure, travel expectations, work schedule, and on-call reality. If there is weekend support, explain how often it occurs. If startup work requires extended hours, say so. Directness helps candidates assess the role honestly and reduces late-stage surprises.
The compensation discussion should be direct as well. Controls engineers know their skills are in demand. A competitive salary range, overtime or comp-time policy when applicable, benefits, training support, and advancement path all influence whether a candidate engages. In many cases, a slightly lower base salary can still be competitive if the role offers reasonable travel, stable leadership, modern equipment, and a clear path to senior engineering responsibility. It depends on the candidate and the market, but silence around the total opportunity rarely helps.
Screen for Evidence, Not Keywords
A resume can confirm exposure to Rockwell Automation, Siemens, AutoCAD Electrical, Ignition, or robotics. It cannot confirm whether the candidate led a successful startup, diagnosed an intermittent fault, or worked effectively with operators during a production issue.
Use an initial conversation to test for specificity. Ask the candidate to describe a difficult controls problem from start to finish. Good answers usually clarify the symptoms, safety steps, diagnostic process, root cause, corrective action, and result. Listen for ownership, but also for sound judgment. The best engineers do not bypass safety controls or make undocumented changes simply to get a line running.
It is also worth asking what they personally programmed, designed, commissioned, or supported. Controls projects involve teams, and there is nothing wrong with collaboration. You simply need a clear picture of the candidate’s hands-on contribution.
A productive screening process covers four areas:
- Technical depth in the controls platforms and equipment most relevant to your operation
- Troubleshooting method, including safety practices and documentation habits
- Project experience, from design and testing through commissioning and handoff
- Communication with electricians, maintenance technicians, operators, vendors, and leadership
Avoid relying on trick questions or broad technical trivia. A candidate may not remember every instruction set from memory, yet still be highly effective at structured troubleshooting and control-system design. Give more weight to how they think than to how quickly they recite terminology.
Build Interviews Around Real Plant Problems
The best interview questions resemble the work the engineer will face. Present a simplified scenario: a conveyor line stops intermittently after a recent HMI change, operators report a safety fault, and production needs a safe restart. Ask how the candidate would approach the issue.
You are not looking for one perfect answer. You are looking for an organized process. A capable engineer should begin with safety, gather information from operators and fault history, check changes to the system, verify inputs and outputs, review logic as needed, and document the correction. They should also know when to involve maintenance, an OEM, or another engineer rather than making an unsupported assumption.
If programming is central to the role, a practical assessment can help. Keep it relevant and reasonable. Reviewing a short ladder-logic sample, interpreting a basic electrical schematic, or explaining an HMI alarm strategy may be more revealing than a lengthy unpaid project. The goal is to validate capability, not to extract free engineering work.
Include an operations or maintenance leader in at least one interview. Controls engineers work across functions, often during stressful situations. A technically strong hire who dismisses technicians or cannot explain an issue in plain language may struggle to earn trust on the floor.
Move Quickly Without Cutting Corners
Controls candidates are often considering multiple opportunities. Long gaps between interviews, unclear feedback, and repeated approval delays can cost you a qualified hire. Speed matters, but it should come from a prepared process rather than rushed evaluation.
Set the interview team, decision criteria, pay parameters, and approval path before candidates begin meeting with the company. After each interview, collect feedback promptly and compare it against the agreed requirements. If a candidate meets the essential technical and interpersonal standards, do not wait for an imaginary perfect match while the opening continues to affect production.
Reference checks are especially useful for this role when they focus on work behavior. Ask former supervisors about reliability during startups, quality of documentation, response to pressure, collaboration with maintenance, and willingness to take accountability. Generic questions produce generic answers.
For employers that do not have deep internal recruiting capacity, a specialized technical recruiting partner can shorten the search while improving candidate accuracy. IntegrityJobs.com works with engineering and industrial employers that need recruiting support grounded in the realities of technical hiring, not broad resume volume.
Make the First 90 Days Part of the Hiring Plan
The offer is not the finish line. Controls engineers need access to drawings, software backups, equipment history, network information, maintenance contacts, and the people who understand the operation. When documentation is limited, be candid about it and give the new hire time to assess risk before expecting major improvements.
A practical onboarding plan should identify the highest-priority assets, recurring downtime issues, current projects, and decision-makers. It should also establish how code changes are approved, backed up, tested, and communicated. These basics protect the operation and help the engineer make an early contribution.
The right controls engineer will not merely keep equipment running. They can reduce repeat failures, improve visibility into system performance, support safer processes, and give your operation more confidence during change. Hire for that long-term impact, then give the person a clear, well-supported place to do the work well.