How to recruit engineers is not a job post plus hope. A plant engineer, a manufacturing engineer, or a mechanical designer who is already employed is not sitting on Indeed all day. LinkedIn’s own talent research says only 36 percent of workers are looking for new roles. The rest can still move, but they will not find you. You have to find them.
That is the whole article. Write a real requisition. Look in the places engineers actually are. Interview on a clock. Use a firm when your own network cannot reach the seat. Skip the generic “we are a family” copy. Skip stacking five agencies on one controls role.
Fee math stays on our placement fee article. The pay on hire model stays on contingency recruiting. This page is the how to.
Apollo Technical is a specialized engineering staffing firm. We will tell you if the search should be in house, with a partner, or both. We will not invent a percent here.
How do you recruit engineers?
You recruit engineers by treating the opening like a search, not a listing. How to hire engineers and recruiting engineers both fail for the same reason: the people you want are busy running a line, closing a drawing package, or sitting in a shutdown. A post reaches whoever is applying. A search reaches whoever can do the work.
Do this in order.
Name the seat in language a peer would use. Manufacturing engineer is not mechanical designer. Process engineer is not project engineer. Controls is not electrical design. If you cannot say which one you need, you are not ready to recruit.
Write a requisition with a salary range, 3 to 5 must haves, and a hiring manager who will interview. Then source. Then screen. Then interview on dates that already exist. Then offer.
Do not start with a board blast and a six round loop. That sequence is how you collect the wrong pile and lose the right person.
Why do job posts fail?
Job posts fail because they describe a unicorn and a vibe, not a job.
They list 15 tools. They hide pay. They say “rockstar engineer” and “wear many hats.” They mix plant work with office CAD. They forget the site is 40 minutes outside town. Then hiring managers wonder why the inbox is full and empty at the same time.
SHRM’s guidance on SHRM job postings is blunt. Mandatory means the job cannot be done without it. Drop words that do not mean anything. Every extra bullet is another reason a capable person decides they do not fit.
A widely cited HBR application research point is the same operational fact: people skip roles when they do not meet every listed item. If you put AutoCAD, SolidWorks, Inventor, Revit, PLC, and a PE on one mechanical opening, you told half the market to stay home.
Job posts also fail when the title is wrong. Post “engineer” and you will get IT, software, and recent grads. Post “mechanical engineer” when you need a plant reliability person and you will interview designers who have never walked a line. The board did not fail. The brief did.
A post is still useful. Use it for people who are looking, for employee referrals to forward, and for a public record of the role. Do not treat it as the search.
Where should you look besides job boards?
How to source engineers starts with who already knows the work.
Ask your current engineers. A plant lead can name three people they would hire before lunch. Tell them the title, the range, and that you will protect the conversation. Then actually call those names. A referral that sits in an ATS for two weeks is not a referral. It is a rumor.
Look in the associations that match the seat. ASME for mechanical. SME for manufacturing. ASHRAE for HVAC. ISA for controls and automation. IEEE for electrical. Local chapter meetings, plant tours, and technical sessions beat a cold InMail that says “exciting opportunity.” You do not need a membership number to use a chapter roster and a polite introduction.
Look at vendors and contractors who already work your site. The controls tech who has been on your PLC for two years may want a direct seat. The designer at your fabricator may want in house work. Ask operations who they already trust.
Look at people who left for a reason you can fix: a closed plant, a bad manager who is gone, a commute you can change. Do not poach with a fantasy. Do poach with a true story.
LinkedIn is a directory, not a job board. Use it to find titles and companies, then call. A job post on LinkedIn is still a post. It reaches the 36 percent who are looking, per LinkedIn talent research. The rest need a human sentence about the actual problem: a new line, a lagging OEE, a drawing backlog, a startup date.
Skip GitHub as your primary well unless the seat is software. This article is plant, manufacturing, HVAC, electrical, quality, project, mechanical, process, and controls. Those people live in plants, offices, and associations, not in commit graphs.
How do you hire a mechanical engineer?
How to hire a mechanical engineer is the same process with a sharper title. Decide plant or design on day one.
Plant mechanical: reliability, rotating equipment, PMs, shutdowns, hands on time with maintenance. Tools might be CMMS, vibration, and the equipment you actually run.
Design mechanical: packages, GD and T, checking, maybe a PE if they stamp. Tools might be SolidWorks or Inventor, not every CAD product on earth.
HVAC mechanical is a third job. Do not mix it with a general mechanical req unless that is truly the seat.
Write the range. Name the site. Name the software you will not train. Drop the rest. Then source from ASME, from your fabricators, and from people who already walked your floor.
How do you write a real requisition?
A requisition is the internal brief. The job post is the public version. If the requisition is mush, every channel will be mush.
Put these on one page before anyone sources.
The title a peer would use.
What this person will own in the first 90 days. Not “support engineering.” A line, a package, a quality escape, a startup.
Must haves, 3 to 5. The job cannot be done without them. Work authorization, location, and one or two technical facts belong here. “Seven years and a smile” does not.
Nice to haves, separate. Preferred software, industry, or a PE. You will not reject a strong person for missing a preferred item.
Salary range, not “competitive.” Engineers compare notes. A hidden range wastes a week.
Who interviews, and which days they can sit.
What “good” looks like versus a neighboring title, so a recruiter does not send a process engineer to a project role.
SHRM’s piece on SHRM hiring delays says the same thing in HR language: walk the description line by line, split must haves from nice to haves, and do not let a manager discover what they want after the first ten resumes.
If you cannot fill that page, you are not hiring. You are browsing.
When should you use a recruiting firm?
Use a firm when the people you need are not applying, and your team does not have hours to hunt them.
Use a firm when the seat is confidential. You cannot post “replacing our engineering manager” on Indeed.
Use a firm when the pool is small: a controls lead on a specific PLC, a process engineer in a regulated plant, a mechanical designer who already knows your product family.
Use a firm when you will still interview. A partner finds and screens. You still own the hire. If the hiring manager will not give dates, a firm cannot fix that. They will move to a client who will.
Do not use five firms on one req. Two with different networks can help. A pile creates duplicate calls and fee fights. That model, including whether you pay only if you hire, is on the contingency recruiting page. The invoice itself is on the placement fee article.
Apollo Technical will say in writing whether we should run the search, share it, or stay out. If your own engineers already have a name, start there. Pay a partner for access you do not have, not for a second copy of a job post.
How fast should you interview?
Fast enough that a good engineer does not take another offer while your panel finds a Tuesday.
SHRM’s 2025 recruiting report puts screening at about 8 to 9 days and interviewing at about 8 to 9 days in SHRM hiring benchmarks. That is already a long wait for a plant engineer who is talking to two other companies. Your loop should be shorter than that average, not proud of matching it.
Put interview slots on the calendar before the first resume arrives. Resume yes or no in a day. First conversation in the same week. A technical screen with someone who does the work, not only HR. A plant walk or a drawing review if that is the job. Then a decision.
Do not add a round because you are unsure. Unsure means the brief is weak. Fix the brief.
Do not ghost. A person you might hire later will remember that you went silent for three weeks.
Hiring managers on recruiting forums keep asking why the one mechanical designer they liked vanished. The usual answer is not salary. It is time. They had an offer from someone who booked the loop in five days.
Short answers hiring managers keep asking
How do you recruit engineers if the job post is empty?
Stop waiting on the post. Source from your own engineers, associations, vendors, and a partner who already works those titles.
How do you hire engineers without a huge HR team?
A clear requisition, a salary range, and a hiring manager with calendar time will beat a big ATS with no owner.
How to source engineers who are not looking?
Call people who are good at the work. Tell them the real problem and the range. Do not send a template about a “dynamic team.”
How to hire a mechanical engineer who can actually do the job?
Split plant from design. Name the software you will not train. Have a mechanical peer in the interview, not only a generalist.
When do you bring in a firm?
When you cannot reach the seat from your own network, when it is confidential, or when the hiring manager’s time is the bottleneck on sourcing, not on interviews.
How many interview rounds do you need?
Enough to see the work, not enough to lose the person. For most plant and design seats, that is a screen, a technical conversation, and a visit. Not six.
If you want help recruiting engineers for a real opening, bring the title, the range, the must haves, and the interview dates. Apollo Technical will tell you whether the search should stay in house or go to a partner, and we will put the model in writing before anyone is called. Percents stay in the agreement, not in this article.
