Free welder interview questions for small shops without HR: 6 sets on process, safety, blueprints, and quality, plus a weld test scorecard. DOCX download.
Six question sets for hiring a welder: core screening, process and position, blueprints and quality, safety and hot work, reliability, plus a weld test checklist and a 1-to-5 scorecard. Download as DOCX.
Hiring a welder is one of the few hires where you can actually watch the work before you commit. That is the good news. The hard part is that the interview still has to tell you which processes and positions a candidate can hold, whether they follow a written procedure or work from habit, and whether they treat safety as routine or as a rule someone else imposed on them.
At FirstHR, we build for the small shops and fabricators who make this hire themselves, with no HR department and often no time. This page gives you six question sets for the employer side of the table: the core screening questions, blocks for each welding process, blueprint and quality questions, the safety block, reliability questions, and a weld test checklist with a 1-to-5 scorecard.
Every question below comes with a note on why it is worth asking and what a strong answer sounds like, so you can judge a welder even if you have never run a bead yourself. Pair the questions with the welder job description you posted, so the interview tests the work you actually described.
TL;DR
Interview a welder on five things: process and position experience, blueprint and procedure literacy, weld quality and defect knowledge, safety habits, and reliability. Then run the same practical weld test for every candidate and score it on the same rubric. National wage data puts the median at about $53,750 a year. Download six question sets and the scorecard as DOCX.
What to Assess in a Welder
Assess a welder on five things: the processes and positions they can actually hold, whether they can read a print and follow a written procedure, how they think about weld quality and defects, their safety habits, and their reliability on a crew. Skill with the arc is necessary and not sufficient; the expensive mistakes in a small shop usually come from a misread symbol or a skipped procedure step.
The most reliable way to get at these is a structured interview: the same core questions for every candidate, scored on the same rubric, followed by the same practical test. That structure is what makes candidates comparable. It is also what keeps a strong personality from outscoring a stronger welder, which is a real risk when the owner is the only interviewer.
Core Welder Questions
Start here
The screening set for any welder opening: processes, positions, materials, joint prep, and what they do when the fit-up is wrong. Ask these of everyone.
Process and Position
MIG, TIG, stick, pipe
Blocks for each process so you ask only what the job needs. A production MIG welder and a 6G pipe welder are different hires.
Blueprint and Quality
Can they follow a procedure?
Weld symbols, procedure specifications, common defects and their causes, self-inspection, and how they react to a rejected weld.
Safety and Hot Work
Non-negotiable
PPE, fume and ventilation, hot work permits and fire watch, cylinder handling, and confined space. Score it, do not skip it.
Reliability and Teamwork
Half the hire
Attendance, pace, how they work with fitters and inspectors, and how they handled a schedule that slipped. Real stories, not slogans.
Weld Test and Scorecard
Score, do not guess
A structured weld test plus a 1-to-5 rubric, so the same test and the same scoring apply to every candidate. The part most question lists leave out.
Match the Questions to Your Process
Ask the process questions the job needs, not all of them. A production MIG welder on thin gauge and a 6G pipe welder are different hires, and a candidate can be excellent at one and completely untested at the other. Decide what the first 90 days of work look like, then weight the interview toward that.
If your work is
Weight these questions
The signal to listen for
Production MIG on sheet and thin gauge
Wire and gas selection, transfer mode, burn-through control
Adjusts settings to thickness instead of running one recipe
Talks about heat control and cleanliness without prompting
Stick or flux-cored in the field
Electrode choice, low-hydrogen rod handling, vertical up or down
Knows how outdoor and coated material change the job
Pipe and code work
Positions tested in, root through cap sequence, inspection history
Names the positions and the pass rate, honestly
Structural fabrication
Blueprint reading, fit-up, tacking, distortion control
Treats fit-up and prep as part of the weld, not a chore
Ask One Question That Only Your Shop Would Ask
After the standard blocks, add one question drawn from the job you actually run: a joint that gives your crew trouble, a material you use constantly, or a tolerance you fight. Generic answers stop working at that point, and you learn more in two minutes than in twenty minutes of rehearsed responses. Bring a real print from a current job and ask the candidate to read a symbol off it. This is also the fastest way to find out whether their experience matches your work or just your job title.
6 Free Welder Question Sets to Download
Download all six as a single Word document or copy individual sets. Each one follows the same structure: when to use it, the questions with notes on what a strong answer sounds like, what to listen for, and space for notes. The last file is the weld test checklist and the scorecard.
Download All 6 Welder Question Sets
Core, process and position, blueprint and quality, safety, reliability, and a weld test checklist with a 1-to-5 scorecard. All in one DOCX.
Set 1: Core Welder Interview Questions
The screening set for any welder opening: processes, positions, materials and thicknesses, joint prep, and what they do when the fit-up is wrong or the print and the procedure disagree. Ask these of every candidate.
Core Welder Interview Questions
CORE WELDER INTERVIEW QUESTIONS
Candidate: __
Shop / Job site: __
Interviewer: __
Date: _
HOW TO USE THIS SET
This is the screening set for almost any welder opening. Ask 6 to 8 of these
questions of every candidate, in the same order, and write the answers down.
The notes in parentheses tell you what a strong answer sounds like, so you can
judge a welder even if you have never run a bead yourself. Score the candidate
on the rubric in Set 6, then decide whether to bring them in for a weld test.
QUESTIONS
1. Which welding processes do you run day to day, and which are you strongest in?
(FCAW) and ties each one to the material and thickness they ran it on.)
2. Which positions have you welded in production, and which are you tested in?
(Strong answer: flat, horizontal, vertical, and overhead, or the 1G to 6G
pipe positions, and is straight about the ones they have not run.)
3. What materials and thicknesses have you worked with?
(Strong answer: mild steel, stainless, and aluminum handled differently, with
real thickness ranges rather than "everything.")
4. Walk me through how you prep a joint before you strike an arc.
(Strong answer: clean the base metal, check the bevel and fit-up, set the
root gap, tack, and preheat when the material and thickness call for it.)
5. How do you take a weld symbol off a print and turn it into machine settings?
(Strong answer: reads the symbol, checks the procedure, then sets amperage,
wire speed, gas, and travel to match, instead of guessing from habit.)
6. What do you do when the fit-up is bad or the print and the procedure disagree?
(Strong answer: stops and asks the supervisor or engineer. A welder who
quietly welds it anyway is the expensive kind of confident.)
7. Tell me about the last weld you were not happy with. What did you do about it?
(Strong answer: names the defect, explains the cause, and describes the fix.
A candidate who has never made a bad weld has not made many welds.)
8. What is your typical output on a production run, and how do you keep it steady?
WHAT TO LISTEN FOR
•Specific processes, positions, materials, and thicknesses, not generalities
•Honesty about what they have not done
•Prep and fit-up treated as part of the job, not a nuisance
•A habit of stopping and asking when something is wrong
NOTES
__
__
Set 2: Process, Position, and Material Questions
Separate blocks for MIG, TIG, stick and flux-cored, and pipe and structural work, so you ask only what the job needs. Use one or two blocks, not the whole set.
Process, Position, and Material Questions
PROCESS, POSITION, AND MATERIAL QUESTIONS
Candidate: __
Process the job actually needs: __
Interviewer: __
WHEN TO USE THIS SET
Use the block that matches the work you are hiring for. A production MIG welder
and a 6G pipe welder are different hires, and a candidate can be excellent at
one and untested at the other. Ask only the block you need, plus the pipe block
if the job involves pipe.
MIG / GMAW
1. What wire, gas mix, and transfer mode do you run on our kind of material?
2. How do you set voltage and wire feed speed on an unfamiliar machine?
3. How do you avoid burn-through on thin gauge, and cold lap on thick sections?
4. What tells you a MIG weld is running hot or cold before you stop the arc?
TIG / GTAW
1. What tungsten and prep do you use for steel, stainless, and aluminum?
2. Walk me through your setup for thin-wall stainless.
3. How do you control heat input and prevent distortion or sugaring?
4. What is your approach to a root pass on open-root work?
STICK / SMAW AND FLUX-CORED / FCAW
1. Which electrodes do you use most, and why those for that job?
2. How do you store and handle low-hydrogen rod?
3. How do you run vertical up versus vertical down, and when do you use each?
4. What changes when you are welding outdoors or on dirty or coated material?
PIPE AND STRUCTURAL
1. Which pipe positions have you welded, and which have you been tested in?
2. Walk me through a root, hot, fill, and cap sequence on pipe.
3. What structural or pipe code work have you done, and to which procedure?
4. What is your pass rate on X-ray or ultrasonic inspection, and on what work?
WHAT TO LISTEN FOR
•The settings conversation is specific, not memorized
•They adjust to the material rather than running one recipe
•Honest about which positions they are tested in versus have tried
•Distortion, heat input, and prep come up without prompting
NOTES
__
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Set 3: Blueprint, Procedure, and Weld Quality Questions
Weld symbols, welding procedure specifications, the defects they see most often and what causes each, self-inspection, nondestructive testing history, and how they react when a weld is rejected.
Blueprint, Procedure, and Weld Quality Questions
BLUEPRINT, PROCEDURE, AND WELD QUALITY QUESTIONS
Candidate: __
Interviewer: __
WHY THIS SET MATTERS
Most costly shop mistakes are not bad arc technique. They are a misread symbol,
a skipped procedure step, or a defect that nobody caught until the part was
assembled. This set separates a welder who follows a written procedure from one
who works from memory and habit.
QUESTIONS
1. Show me how you would read this weld symbol. (Bring an actual print.)
(Strong answer: reads the reference line, the arrow side and other side, the
size, length, and pitch, and asks about anything that is unclear.)
2. What is a welding procedure specification, and how do you use one?
(Strong answer: treats it as the settings and sequence they must hold to, and
knows the shop has to qualify the procedure and the welder to it.)
3. What are the defects you see most often, and what causes each?
(Strong answer: porosity, undercut, lack of fusion, and cracking, each tied
to a cause such as contamination, travel speed, heat input, or gas coverage.)
4. How do you inspect your own work before you call it done?
(Strong answer: a visual check against the print, then a measurement of size
and profile, not a glance and a grind.)
5. What nondestructive testing has your work been through?
(Strong answer: visual, dye penetrant, magnetic particle, radiographic, or
ultrasonic, with an honest account of pass and fail history.)
6. What do you do when an inspector rejects your weld?
(Strong answer: finds the cause, repairs to the procedure, and changes what
caused it. Defensiveness here is a real warning sign.)
7. How do you control distortion on a long or thin assembly?
8. How do you keep tolerances when you are fitting parts as well as welding?
WHAT TO LISTEN FOR
•Comfortable with prints and symbols, not guessing
•Names defects and causes, not just "it looked bad"
•Owns rework instead of blaming the fitter or the material
•Measures and checks rather than eyeballing
NOTES
__
Set 4: Safety, PPE, and Hot Work Questions
PPE and lens shade, protecting bystanders, hot work permits and fire watch, fume and ventilation, cylinder handling, and confined space. Score this block rather than treating it as a formality.
Safety, PPE, and Hot Work Questions
SAFETY, PPE, AND HOT WORK INTERVIEW QUESTIONS
Candidate: __
Interviewer: __
WHY THIS SET MATTERS
Welding carries fire, fume, electrical, and eye hazards, and OSHA sets specific
requirements for welding, cutting, and brazing. A welder who is casual about
safety is a liability to your shop and everyone in it, so ask these questions
of every candidate and score the answers. Do not treat this block as a
formality at the end of the interview.
QUESTIONS
1. Walk me through the PPE you put on before you start a job.
(Strong answer: helmet with the right shade lens, flame-resistant clothing,
gloves, boots, and hearing and respiratory protection when the job calls for
it. Says it as a routine, not a list they memorized for the interview.)
2. How do you protect the people working around you?
(Strong answer: screens or curtains against arc flash, keeps the area clear,
warns people before striking an arc.)
3. What do you do before hot work near anything flammable?
(Strong answer: hot work permit, clears or covers combustibles, has a fire
extinguisher at hand, and knows when a fire watch is required.)
4. How do you handle welding fume and ventilation?
(Strong answer: local exhaust, positioning to keep the head out of the plume,
respiratory protection on galvanized, stainless, or coated material.)
5. How do you store, move, and secure gas cylinders?
(Strong answer: upright and chained, caps on when not in use, oxygen and fuel
separated, never lifted by the valve.)
6. What is your process for confined space work?
(Strong answer: permit, atmosphere testing, ventilation, and an attendant.
A candidate who shrugs at this question has told you something.)
7. Tell me about a time you stopped a job over a safety concern.
8. What safety training and certifications do you hold, and when were they last
renewed?
WHAT TO LISTEN FOR
•Safety described as habit, not as rules imposed from above
•Willing to stop work and speak up
•Specific about fume, fire watch, cylinders, and confined space
•No stories that treat shortcuts as toughness
NOTES
__
Set 5: Reliability, Teamwork, and Behavioral Questions
Attendance, pace, how they work with fitters and inspectors, a schedule that slipped, and a disagreement with a supervisor. Real past behavior, asked for as specific stories with a result.
Reliability, Teamwork, and Behavioral Questions
RELIABILITY, TEAMWORK, AND BEHAVIORAL QUESTIONS
Candidate: __
Interviewer: __
WHY THIS SET MATTERS
In a small shop, skill is only half the hire. Attendance, pace, and how someone
handles a bad day decide whether the crew works. These questions ask for real
past behavior, which predicts future behavior far better than a hypothetical.
Score each answer for a real situation, a specific action, and a result.
QUESTIONS
1. Tell me about a job where the schedule slipped. What did you do?
(Strong answer: a specific situation, what they personally did, and how it
turned out, without blaming everyone else on the crew.)
2. Describe a time you disagreed with a supervisor about how to do a weld.
(Strong answer: raised it, gave a reason, and followed the procedure or the
decision once it was made.)
3. How do you work with fitters, machinists, and inspectors on a build?
4. What does your shift look like from the first hour to the last?
(Strong answer: prep, setup, and cleanup are part of the shift, not an
afterthought at the end of it.)
5. Tell me about a time you had to teach or check another welder.
6. What is your attendance record, and what would your last supervisor say
about your reliability?
7. Why did you leave your last shop, and what are you looking for in this one?
8. What kind of work do you want to be doing two years from now?
WHAT TO LISTEN FOR
•Specific stories with a real result, not slogans
•Takes ownership of mistakes
•Treats housekeeping, prep, and cleanup as part of the job
•Reasons for leaving that hold together across the conversation
NOTES
__
Set 6: Weld Test Checklist and Scorecard
The practical test setup, what to watch while the candidate works, a rating sheet for the finished weld, and a 1-to-5 interview rubric. This is the part most question lists leave out entirely.
Weld Test Checklist and Scorecard (1 to 5)
WELD TEST CHECKLIST AND INTERVIEW SCORECARD
Candidate: __
Interviewer: __
Date: _
PART 1: WELD TEST SETUP
Give every candidate the same test, on the same material, in the same position,
with the same time allowance. A test that changes between candidates tells you
nothing you can compare.
Process for the test: __
Material and thickness: __
Position: __
Time allowed: __
Machine and consumables provided: __
PART 2: WHAT TO WATCH DURING THE TEST
Setup and prep [ ] Observed Notes: _____
Cleans the metal, checks fit-up, sets the machine deliberately.
Safety without being told [ ] Observed Notes: _____
PPE on, area cleared, screens up, cylinders secured.
Arc control and consistency [ ] Observed Notes: _____
Steady travel, consistent bead, adjusts when something is off.
Self-inspection [ ] Observed Notes: _____
Checks their own work against the print before handing it over.
Communication and coachability [ 1 2 3 4 5 ] Notes: _____
Total: ______ / 50 (weld result plus interview)
DECISION
Recommendation: [ ] Strong yes [ ] Yes [ ] No [ ] Strong no
Key strengths: __
Key concerns: __
Interviewer signature: __
Note: If more than one person interviews or watches the test, each should score
independently before anyone discusses the candidate.
The Weld Test: What to Watch
Run the same practical test for every candidate: same process, same material and thickness, same position, same time allowance. A test that quietly changes between candidates gives you nothing you can compare, and it undermines the fairness of the whole process. Set the parameters once, before the first candidate arrives.
Then watch the setup as closely as the finished bead. How a candidate cleans the metal, checks the fit-up, dials in the machine, and puts on PPE is a preview of what they will do on your floor every day, and it is visible long before the weld is cool enough to inspect.
How they set up
Do they clean the base metal, check the fit-up, and set the machine deliberately, or do they strike an arc on whatever the last person left dialed in?
Safety without a reminder
PPE on, area cleared, screens up, cylinders secured. A candidate who needs to be told in a test will need to be told on the floor.
Whether they check their own work
A strong welder inspects the bead against the print before handing it over. Waiting for someone else to catch a defect is a habit that costs you rework.
Pace against the clock
Give the same time allowance to everyone. A clean weld that took three times as long is a different hire than a clean weld inside the allowance.
Score the finished weld on the same points for everyone: bead appearance and uniformity, penetration and fusion, size and profile against the print, visible defects, and time taken against the allowance. If a lead welder watches with you, have each of you score independently before you talk, and keep the completed sheets with the interview evaluation form.
Certification Questions Worth Asking
Treat a welding certificate as a screening signal, not proof that a candidate can run your work. Welder qualification is specific to a process, a position, a material, and a thickness range, and it carries continuity requirements, so a credential earned three years ago on different work does not answer the question you are asking.
Ask four things: which test they passed, on what material and in what position, to which code or written procedure, and when it was last verified. Many shops also have to qualify a welder to their own procedure regardless of what the candidate arrives holding, which is another reason the practical test is not optional.
Ask
What a strong answer includes
Which welding test have you passed?
The specific test, not just the phrase certified welder
On what material and in what position?
Material, thickness range, and position, stated precisely
To which code or procedure?
Names the code or the employer procedure it was run to
When was it last verified?
A date, and an honest answer if continuity has lapsed
What training or apprenticeship did you do?
Trade school, apprenticeship hours, or documented on-the-job training
A candidate who answers these precisely is telling you they understand how qualification works, which is itself a good sign. Vagueness here is worth probing, and it is not automatically disqualifying: plenty of strong production welders have never been formally tested. That is what your own test is for.
Safety and Hot Work Questions
Ask every candidate the safety block, and score it. Welding carries fire, fume, electrical, and eye hazards, and OSHA sets specific requirements for welding, cutting, and brazing that your shop is responsible for meeting. A welder who is casual about any of it is a risk to everyone working around them.
What you are listening for is habit rather than recitation. A strong candidate describes PPE, screens, permits, and ventilation the way they describe setting up a machine: as part of the job, in a specific order, with reasons attached.
Personal protection
Right shade lens for the process and amperage
Flame-resistant clothing, gloves, and boots
Hearing and respiratory protection when needed
Fire and hot work
Hot work permit before welding near combustibles
Area cleared or covered, extinguisher at hand
Knows when a fire watch is required
Fume and ventilation
Local exhaust and head out of the plume
Extra caution on galvanized and coated material
Confined space means permit and atmosphere testing
Red flags
Treats shortcuts as toughness
Cannot describe a time they stopped a job
Vague or annoyed when asked about PPE
Hot Work Is Regulated, Not Optional
Federal requirements for welding, cutting, and brazing cover fire prevention, ventilation, and protection of personnel, including moving the work to a safe location or moving the hazards away, and assigning fire watchers where a fire hazard remains (OSHA 29 CFR 1910.252). A candidate who cannot describe a hot work permit or a fire watch has not worked where those rules were enforced.
Ask one behavioral safety question as well: tell me about a time you stopped a job over a safety concern. The answer tells you whether the candidate will speak up in your shop or quietly weld through a problem.
What a Strong Answer Sounds Like
Across every set, strong answers share a shape: they are specific, they name causes rather than symptoms, and they own mistakes. Weak answers are general, defensive, or blame the machine and the material. The three examples below are the ones that separate candidates fastest.
Walk me through how you prep a joint before you strike an arc.
Strong answer: Cleans the base metal, checks the bevel and the fit-up, sets the root gap, tacks, and preheats when the material and thickness call for it. A strong answer treats prep as part of welding, and mentions what they do when the fit-up they were handed is wrong.
Weak answer: A weak answer jumps straight to settings and treats prep as someone else’s problem, or says they weld whatever they are given without checking it.
What are the defects you see most often, and what causes each?
Strong answer: Names specific defects and ties each to a cause: porosity from contamination or lost gas coverage, undercut from too much heat or travel speed, lack of fusion from low heat input or bad technique. Then explains how they correct the cause, not just the weld.
Weak answer: A weak answer says the weld looked bad or blames the machine and the material, with no diagnosis and no idea how to prevent a repeat.
What do you do when an inspector rejects your weld?
Strong answer: Asks what the rejection was, finds the cause, repairs to the written procedure, and changes the setting or technique that caused it. A strong candidate treats rejection as information and can name a time it happened to them.
Weak answer: A weak answer gets defensive, argues the inspector was wrong, or claims their work has never been rejected. Nobody with real hours has a perfect record.
The most useful follow-up in a welder interview is simply what caused it? A candidate who can trace a defect back to contamination, heat input, travel speed, or gas coverage is a welder who can fix problems on your floor without waiting for someone else to diagnose them.
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Keep every question tied to the work, ask the same questions of every candidate, and run the same test for everyone. That combination is both the fairer approach and the more accurate one, and it is the part most question lists skip. A structured interview gives you comparable evidence instead of a set of impressions.
Ask about the work, not the person
Federal anti-discrimination law, enforced by the EEOC, prohibits basing a hiring decision on protected characteristics, and questions that probe them create risk even when they are asked as small talk. Do not ask about age, race, religion, national origin, sex, pregnancy or family plans, disability, or genetic information. In a shop interview the trap usually sounds friendly: asking an older candidate whether they can still handle overhead work, or asking where someone is originally from. Ask instead whether the candidate can perform the essential functions of the job, with or without reasonable accommodation, and ask it of everyone. This is general information, not legal advice.
Same questions, same weld test, every candidate
A structured interview, where every candidate answers the same questions and is scored against the same rubric, predicts on-the-job performance better than a free-flowing conversation, and it protects you by showing that everyone was judged on the same job-related criteria. The same logic applies to the practical test: same material, same position, same time allowance. A test that quietly changes between candidates gives you nothing you can compare and undermines the fairness of the process. The question sets and the scorecard on this page are built to keep both halves consistent.
Score right after, and score independently
Fill in the scorecard immediately after the interview and the weld test, while the answers and the bead are fresh. If a lead welder or a shop supervisor watches the test with you, have each person score on their own before anyone talks. This keeps the most senior opinion in the room from anchoring everyone else, which is the usual way a strong candidate gets talked out of and a weak one gets talked in. Compare the written evidence first, then discuss the gaps.
Test for the work you actually run
Weight the interview toward the work in your shop. If you run production MIG on thin gauge all day, the thin-gauge and burn-through questions matter more than pipe positions. If you fabricate structural steel, weight blueprint reading, fit-up, and structural procedure experience. A small shop hiring one welder should be clear about the first 90 days of actual work and test for exactly that, rather than interviewing for a generic all-round welder it does not need and cannot afford.
Same Questions, Same Test, Same Rubric
Asking every candidate the same job-related questions and scoring them against the same rubric produces evidence you can compare, and it keeps decisions off the protected characteristics that the EEOC prohibits as the basis for hiring. In a shop interview, the risky questions usually arrive as friendly small talk about age, family, or where someone is from. Ask about the ability to perform the essential functions of the job instead, and ask it of everyone.
If you want the full list of what not to ask and safe alternatives, see our guide to illegal interview questions. This page is general information, not legal advice.
Welder Pay
Welder pay varies with process, code work, shift, travel, and region, so use the federal wage data as a baseline and adjust to your market. Certified pipe and code welders generally sit above production MIG work on thin gauge, and industrial markets pay above the national midpoint.
Median $53,750 a Year (BLS OEWS, May 2025)
According to the Bureau of Labor Statistics Occupational Employment and Wage Statistics survey (May 2025), welders, cutters, solderers, and brazers had a median wage of $53,750 a year, about $25.84 an hour. The lowest 10 percent earned about $39,240 or less and the highest 10 percent about $77,530 or more, with the middle half running from roughly $46,790 to $63,010 (U.S. Bureau of Labor Statistics).
Budget the total cost rather than the hourly rate: overtime, PPE, consumables, and the ramp time before a new welder is producing at full pace on your parts. Posting a rate range in the ad also filters out candidates who were never going to accept, which saves the interview slot for someone who might.
Hiring a Welder Without HR
A large manufacturer hires welders through a recruiter, a structured panel, and a weld test run by a quality department. A small shop hires through the owner or the lead welder, between running their own jobs. That reality shapes how you should run this, and it is where the avoidable mistakes happen.
You are the owner, the interviewer, and the person who has to judge the weld
At a large manufacturer, a welder goes through a recruiter, a structured panel, and a certified weld test run by a quality department. In a small shop the owner or the lead welder does all of it, usually between running their own jobs. The question sets here are built for that: pick the process block that matches your work, ask the same core questions of every candidate, and write down what you hear. If you are not a welder yourself, bring your best welder in to watch the practical test and score it independently, then compare notes.
A certificate is not the same as being qualified for your work
Welding qualification is specific to a process, a position, a material, and a thickness range, and it also has continuity requirements, so a certificate from three years ago does not prove a candidate can run the job you are hiring for today. Ask which test they passed, on what, in which position, and when. Then run your own test on the work you actually do. Many shops also have to qualify a welder to their own written procedure regardless of what the candidate arrives with, so treat prior credentials as a screening signal rather than a substitute for the practical test.
The interview is one step; the offer and the first day decide whether they stay
Skilled trade candidates often hold more than one offer at a time, so a slow, disorganized hiring process loses good welders to whoever moves first. Decide quickly after the test, put the offer in writing the same week, and have the first day ready: safety orientation, PPE issued, the paperwork signed, and someone assigned to walk them through the shop. FirstHR handles that people side for a small shop: send the offer for e-signature, run the new hire paperwork and the onboarding checklist, assign safety training, and store the signed documents and the interview scorecard on the employee profile. Applicant tracking is coming soon to FirstHR.
Step
Interview only
Interview plus weld test
Tells you what the candidate says they can do
Shows you the bead they actually lay
Reveals setup, prep, and PPE habits
Gives you a comparable score across candidates
Catches a credential that no longer matches the work
If you have to cut something for time, cut the number of candidates rather than the test. Two well-tested welders beat six candidates you interviewed quickly and can no longer tell apart a week later. Our guide to hiring skilled trade workers covers sourcing for the same kind of shop.
From Interview to First Day
Decide fast once the test is scored. Skilled welders often hold more than one offer, so a slow process loses good candidates to whoever moves first. Put the offer in writing the same week, then get the first day ready: safety orientation, PPE issued, the new hire paperwork signed, and someone assigned to walk them through the shop.
Make the offer in writing, fast
Confirm pay rate, shift, and start date the same week as the test. Skilled welders often hold several offers, and the slow employer loses.
Safety orientation before the first arc
Site-specific hazards, hot work rules, PPE issued and fitted, and any respiratory protection requirements handled before they start production.
Paperwork and shop policies signed
I-9, W-4, and the safety and equipment policies acknowledged and stored, so day one is welding rather than a filing exercise.
A first 90 days with a check-in
Pair them with a lead welder, set what good looks like on your work, and schedule a real check-in rather than waiting for a problem.
FirstHR connects that side of the hire for a small shop: send the offer letter for e-signature, run the paperwork and the onboarding checklist, assign safety and equipment training, and store the signed documents and the completed scorecard on the employee profile. FirstHR is an onboarding and HR platform, not a payroll provider and not shop-floor or quality software, so pair it with those. Applicant tracking is coming soon to FirstHR.
Assess a welder on process and position fit, blueprint and procedure literacy, weld quality knowledge, safety habits, and reliability.
Ask only the process block your job needs: a production MIG welder and a 6G pipe welder are different hires.
Run the same practical weld test for every candidate, and watch the setup and self-inspection as closely as the finished bead.
Treat a certificate as a screening signal: qualification is specific to process, position, material, and thickness, and it can lapse.
Score the safety block rather than treating it as a closing formality, and ask for a time the candidate stopped a job.
Use federal wage data as the baseline: the occupation reported a median of $53,750 a year in the May 2025 survey.
Frequently Asked Questions
What questions should I ask when hiring a welder?
Ask questions that test five things: process and position experience, blueprint and procedure literacy, weld quality and defect knowledge, safety habits, and reliability. Strong core questions include which processes they run and are strongest in, which positions they have been tested in, what materials and thicknesses they have welded, how they prep a joint before striking an arc, what they do when the fit-up is bad or the print and the procedure disagree, which defects they see most often and what causes each, and what they do when an inspector rejects a weld. Add the safety block for every candidate, since welding carries fire, fume, and electrical hazards. Then run a practical weld test on the work you actually do, because answers alone will not tell you whether someone can lay the bead your job needs.
Should I give a welding test during the interview?
Yes. A practical weld test is the single most useful step in hiring a welder, because welding is a skill you can watch rather than a claim you have to take on faith. Give every candidate the same test: the same process, the same material and thickness, the same position, and the same time allowance, so the results are comparable. Watch the setup as closely as the finished bead, since how a candidate cleans the metal, checks the fit-up, dials the machine, and puts on PPE tells you what they will do every day on your floor. Score the result on the same rubric for everyone: bead appearance, penetration and fusion, size and profile against the print, defects, and time taken. The weld test checklist on this page is built for exactly this.
How do I evaluate a welder if I am not a welder myself?
You do not have to grade the arc technique yourself; you have to recognize a specific, methodical answer from a vague one, and you have to get a qualified pair of eyes on the practical test. Each core question in these sets comes with a note on what a strong answer sounds like, so you can judge whether the candidate names real processes, materials, thicknesses, defects, and causes, or talks in generalities. For the weld test, ask your best welder, a trusted shop lead, or a local trade instructor to watch and score it independently, then compare their score with yours. Reference calls to previous supervisors are also worth the ten minutes: ask specifically about weld quality, rework, attendance, and safety.
What certifications should a welder have?
It depends entirely on the work you run. Structural fabrication, pressure work, and pipeline work are governed by different codes, and welder qualification is always specific to a process, a position, a material, and a thickness range rather than being general. That means a certificate proves a candidate passed a particular test at a particular time, not that they can weld anything you put in front of them. Qualification also carries continuity requirements, so a credential can lapse if the welder has not run that process recently. Ask which test they passed, on what material and position, to which code or procedure, and when it was last verified. Then run your own test, since many shops must qualify a welder to their own written procedure regardless of what the candidate brings with them.
What safety questions should I ask a welder?
Ask about PPE, protecting bystanders, hot work near combustibles, fume and ventilation, gas cylinder handling, and confined space work, and ask them of every candidate rather than treating safety as a closing formality. Welding carries fire, fume, electrical, and eye hazards, and OSHA sets specific requirements for welding, cutting, and brazing that your shop has to meet. A strong answer describes safety as routine habit: the right lens shade for the process, flame-resistant clothing, screens against arc flash, a hot work permit and a cleared area before welding near anything flammable, local exhaust and head out of the plume, cylinders upright and secured, and a permit with atmosphere testing for confined space. Also ask for a time they stopped a job over a safety concern. A candidate who treats shortcuts as toughness is a risk to everyone in the shop.
How much does a welder cost to hire?
According to the Bureau of Labor Statistics Occupational Employment and Wage Statistics survey (May 2025), welders, cutters, solderers, and brazers had a median wage of $53,750 a year, about $25.84 an hour. The lowest 10 percent earned about $39,240 or less and the highest 10 percent about $77,530 or more, with the middle range running from roughly $46,790 to $63,010. Pay varies with process, code work, shift, travel, and region: certified pipe welders and code work generally command more than production MIG on thin gauge, and shops in high-demand industrial markets pay above the national figure. Budget for the total cost rather than the hourly rate alone, including overtime, PPE, consumables, and the ramp time before a new welder is producing at full pace on your parts.
What are red flags in a welder interview?
The clearest red flags are vagueness about processes and positions, defensiveness about rejected welds, and a casual attitude toward safety. Be cautious with a candidate who cannot name the materials and thicknesses they have run, who claims they have never made a bad weld, who blames the machine, the material, or the fitter for every problem, or who gets annoyed at questions about PPE and hot work permits. In the practical test, watch for someone who strikes an arc on whatever settings the last person left dialed in, skips cleaning and fit-up, needs to be reminded about PPE, or hands over a weld without inspecting it. Inconsistent reasons for leaving previous shops, and reluctance to give a supervisor as a reference, are worth following up on before you make an offer.
How do I keep track of welder applicants without an applicant tracking system?
Most small shops run this on a spreadsheet, and that works fine as long as it is consistent. Give every candidate a row with the date they applied, which process block you interviewed them on, their scores from the interview and the weld test, and the decision with a one-line reason. Save the completed scorecards in one folder so you can compare candidates on written evidence rather than memory, and so you have a record of the job-related criteria you used. Keep application records for the period your obligations require, and apply the same retention rule to everyone. Applicant tracking is coming soon to FirstHR, which today handles the steps after the decision: the offer and e-signature, new hire paperwork, safety training assignment, and document storage on the employee profile.
