Is Your ATS Filtering Out the Skilled-Trades Candidates You Need?

Your ATS may be ranking resume polish ahead of shop-floor ability.

A well-written resume can move someone to the top of the list, while an experienced machinist, maintenance mechanic, or fabricator with a thinner resume never reaches a technical screen. When that happens, the position stays open while the current crew covers the work through overtime, delayed maintenance, or slower production.

ATS filters help hiring teams sort applications and surface possible matches. The trouble starts when exact job titles, rigid experience thresholds, perfect employment histories, and specific keywords carry more weight than the work someone has performed.

Of course, there’s definitely no reason to throw out the technology. You simply just need to know where it misreads trade experience, which filters deserve another look, and when a technical phone screen or practical test should make the decision.

What Your ATS Sees vs What Your Shop Needs

An ATS reads job titles, keywords, dates, certifications, locations, and answers to screening questions. It can identify mentions of Haas machines, Fanuc controls, AWS D1.1, hydraulic troubleshooting, or press brake operation. It cannot confirm how deep that experience runs.

Two candidates may both list five years of CNC work.

One has spent those years loading parts, changing inserts, and pressing cycle start. The other has completed setups, selected tooling, adjusted offsets, edited programs at the control, and inspected the first piece.

Their resumes may contain many of the same terms, but they would arrive on the floor with very different levels of independence.

Maintenance resumes create a similar issue. “Industrial maintenance” could mean lubrication, belts, bearings, and basic mechanical repairs. It could also cover 480-volt electrical systems, PLC faults, hydraulics, motors, CNC equipment, and press brakes.

The software can narrow the field and save time. A technical conversation still needs to establish what the person diagnosed, repaired, set up, programmed, or operated without supervision.

5 Ways Qualified Tradespeople Get Screened Out

1. Their job title does not match yours

Trade titles vary from one shop to another. A CNC operator at one plant may handle full setups, edit programs, select tooling, and hold tight tolerances, while another employer would call that person a CNC machinist or setup technician. The same applies in fabrication, where fitter-welder, structural fabricator, Class A welder, and steel fitter can describe similar work. Search related titles, then look at the equipment, processes, and level of independence behind them.

2. Their resume uses different trade language

Experienced tradespeople rarely write resumes with an ATS in mind. They may describe the right experience using terms your search does not recognize.

A posting might ask for flux-core welding while the resume says FCAW, or search for a specific control when the candidate only lists broader PLC troubleshooting experience.

Resumes also leave out details the candidate assumes are obvious, such as setup responsibilities, material ranges, or equipment capacity. Include abbreviations, related terms, and common variations in your searches, then confirm the person’s experience through a technical conversation.

3. Knockout questions leave no room for context

Knockout questions automatically remove applicants when they give an answer outside your requirements. Common examples include, “Do you have at least ten years of experience?”, “Are you currently certified?”, or “Can you work the night shift?”

They work well for firm conditions, but they can cause problems when a near match gets treated as a clear rejection. Someone with nine years of experience may miss a ten-year cutoff despite having worked on the exact equipment your shop uses. The same can happen with location, certifications, or experience with a similar control system.

Use these questions for fixed requirements such as work authorization, required licenses, or shift availability. Technical experience usually needs room for explanation.

4. Contract work and employment gaps get read the wrong way

Steel manufacturing, fabrication, and machine-shop careers do not always produce clean, uninterrupted work histories.

Large projects end, plants reduce headcount, contractors move between assignments, and shops cut crews when a major customer changes its order volume.

An ATS may favor uninterrupted employment, although contract assignments can expose someone to a wider range of equipment, materials, processes, and production environments. A maintenance mechanic who has supported several plants may have diagnosed more types of failures than someone who spent ten years maintaining one stable line.

Instead of automatically penalizing the pattern, look at the work completed during each assignment, why the role ended, and how recently the candidate used the required skills. The timeline gives you context, but it doesn’t measure ability on its own.

5. The application requires too much work

Long applications lose qualified candidates before the hiring team ever sees them.

In fact, Employ’s 2025 Job Seeker Nation Report found that 35% of U.S. candidates would abandon an application if it took too long. Every extra login, repeated field, and unnecessary question creates another reason to leave.

If the process requires candidates to create an account, upload a resume, re-enter the same work history, answer twenty screening questions, and complete a long assessment, some won’t bother and will close the page before finishing.

How AI Within Your ATS Can Amplify the Same Mistakes

Many ATS platforms now use AI to match candidates, summarize resumes, search older applications, and recommend possible fits. These tools can save hiring teams time, but they still depend on the criteria and information inside the system.

Weak criteria can produce weak recommendations:

• If a posting lists every machine used across the facility, AI may favor the candidate who names the most equipment rather than the person with the deepest experience on the machine tied to the opening.

• If exact titles carry too much weight, a setup machinist may rank below a basic operator whose resume repeats the preferred title several times.

Use AI to retrieve information and identify possible matches. Let someone with technical knowledge decide which experience deserves a closer look and which questions need to be asked.

Use the ATS to Organize the Search

Start by reviewing the filters attached to each skilled trades role, especially requirements copied from older job descriptions. Separate the experience someone needs on day one from the skills your team can teach.

Widen searches to include related titles, abbreviations, machine brands, controls, welding processes, and alternate trade terms. Give close matches a manual review when their recent work lines up with the equipment tied to the opening.

Use the phone screen to confirm what they have actually done.

• For machinists, ask about machines, controls, setups, tooling, offsets, tolerances, and inspection.

• For maintenance mechanics, ask them to explain a recent breakdown, how they isolated the fault, and what they repaired.

• For fabricators and press brake operators, cover print reading, material thickness, machine capacity, setups, and inspection requirements.

When possible, finish with a practical test built around the work the person would perform in the role. The ATS should organize the search. Technical screening should decide who belongs on the floor.

Which skilled trades opening keeps producing applications but no one you would trust with the work?

Cannonball Recruiting helps steel manufacturers, fabrication shops, and machine shops screen CNC machinists, maintenance mechanics, fabricators, supervisors, and welders around the work they can perform. Talk to us about the role your ATS keeps missing.