How to Write a Job Posting for a Technical Role That's Hard to Fill

Most job postings for technical roles follow the same formula: duties, requirements, company paragraph. That fails when the role is hard to fill. A PLC engineer or maintenance technician sees dozens of similar specs every day. To stop them scrolling, your posting must answer three things right away: the machines or systems they will work on, the tools and brands they will use, and the shift, location, and pay. This article shows how to structure a posting that attracts technically qualified candidates, not a flood of mismatched applications.

Why hard-to-fill technical roles need a different posting

Standard postings describe what the company wants. A post for a hard-to-fill role needs to describe what the candidate gets: a specific problem to own, a set of technologies that match their expertise, and a clear picture of the daily environment.

Technical candidates with in-demand skills rarely read long postings. They scan for keywords (PLC brand, shift pattern, location, salary), then decide in seconds. If the first two lines do not contain those specifics, they move on.

The challenge is not just getting applications. It is getting applications from people who can actually do the job. A vague posting attracts the wrong candidates and wastes screening time. A specific posting filters early: the right candidate recognizes their own stack and applies; the wrong one sees they are not a match and self-selects out.

What technical candidates look for before applying

Four things decide whether someone will invest time in your application.

Specific technologies. Write "Siemens S7 and TIA Portal," not "experience with automation." Write "Allen-Bradley CompactLogix" not "PLC programming." If the role uses a particular CMMS (Ultimo, SAP PM), name it. Candidates search for these keywords. More importantly, they use them to judge if the role fits their skills.

The actual problem they will solve. A maintenance tech wants to know what equipment they will maintain: packaging lines, CNC machines, conveyor systems, HVAC. A PLC engineer wants to know if they will program new lines from scratch or troubleshoot existing code on 15-year-old hardware. Mention the production environment (food, pharma, automotive, metal), typical breakdown frequency, and whether they work solo or in a team.

Work pattern and stability. Shift schedule is not a detail at the end. It is often the deciding factor. State clearly: "3-shift system, one weekend per month on-call." Include travel percentage, remote possibility (if any), and the actual city or plant name. Candidates skip postings that hide the location. Also note contract type and a realistic career path: "Within 12 months you can grow to lead tech for the packaging department."

Compensation and useful extras. A salary range is non-negotiable. Without one, many candidates assume the pay is below market. A range such as BRL 3,200–3,800 gross per month based on 40 hours is enough. Also mention shift allowances, overtime policy, and one or two tangible perks like a training budget for specific certifications or an annual tool allowance.

Structure of a job posting that works for technical roles

Deliver information fast. Technical readers scan, so make the hierarchy visible.

Title with exact skills. Use "Underhoudsmonteur (Elektro-mechanisch, PLC, Ploegendienst)" instead of just "Onderhoudsmonteur." The extra keywords help with search and signal the role is not generic. Skip creative titles unless that is the official internal title.

Opening: what you will own, not who we are. Start with one or two sentences about the main machine line or the core problem. For example: "You take ownership of preventive and corrective maintenance on three cheese packing lines, two of which were upgraded in 2024. You are the go-to person for the plant's SCADA system and work a fixed 2-shift schedule." That tells the candidate exactly what they are walking into.

Separate must-haves and nice-to-haves. A single list loses good candidates who think they need everything. Must-haves: 3+ years with electromechanical systems, ability to read electrical schematics, experience with Siemens PLC fault finding, Dutch B1. Nice-to-haves: food industry experience, TIG welding, forklift certificate. Keep must-haves to five to seven items.

Work environment in a short block. One or two lines: shift, location, on-call rotation, team size. Avoid "dynamic team." Say "You join a team of four technicians, report to the technical manager, and work the early/late shift rotating weekly."

Why this role matters. Link the role to a business outcome: "Without a stable packing line, we lose €15,000 per hour of downtime." That shows respect for the technician's impact.

Call to action. Technical candidates dislike long application flows. Write "Apply in 8 minutes. No cover letter needed. Send your CV or LinkedIn profile." Remove mandatory account creation. For more on what makes a posting page attractive, read how to create attractive job pages.

Example job posting rewrite: maintenance technician

Here is how a generic posting transforms into one that works.

Before (typical posting): We are looking for a motivated maintenance technician to join our dynamic team. You will be responsible for maintaining our production equipment, performing preventive maintenance, and ensuring smooth operations. Requirements: technical diploma, experience with automation, team player, problem-solving skills. We offer a competitive salary and a pleasant working environment.

After (practical rewrite): Underhoudsmonteur Elektro-mechanisch (PLC Siemens, 2-ploegendienst)
Breda | BRL 3,100–3,600 bruto per maand, exclusief 18% ploegentoeslag

Jij wordt de eerste technische lijn op onze drie verpakkingslijnen voor zuivel. Die lijnen draaien 16 uur per dag, en jij zorgt dat storingen onder 4% van de productietijd blijven. Je werkt in een vast 2-ploegenschema (06:00–14:30, 14:00–22:30), met een team van vier monteurs.

Must-haves

• 3+ jaar ervaring met elektro-mechanisch onderhoud in een productieomgeving
• Storing zoeken en oplossen op Siemens S7-300/400
• Zelfstandig elektrische schema's lezen
• Nederlands op B1-niveau

Nice-to-haves

• Ervaring met zuivel of food
• Laagspanningscertificaat NEN 3140
• Heftruckcertificaat

Wat je kunt verwachten

• Trainingbudget van €2,000 per jaar voor vakopleidingen
• Vast contract na 7 maanden
• Geen consignatiediensten, geen weekendwerk

Stuur je CV of LinkedIn-profiel op. Geen brief nodig. Vragen? Belt of appt met Bram, onze technisch manager, via [nummer].

The right candidate can picture their first Monday morning.

Common mistakes that turn technical candidates away

Several missteps are easy to fix once you see them.

Too many requirements, especially nice-to-haves dressed as must-haves. If a maintenance tech can learn your specific packaging machine in two weeks, do not require three years of experience on that exact brand. Overloading requirements filters out viable candidates.

Hiding location or shift details. Writing "regio Breda" to cast a wider net frustrates candidates who need to know commuting time. Be precise. For field service roles, list travel percentage and typical radius (e.g., "max 2 hours from Eindhoven").

Jargon without substance. "Fast-paced," "hands-on mentality," and "no 9-to-5 mentality" are filler. Replace each with a concrete example: "We run 12 product changeovers per shift, so you will switch between mechanical and electrical problems every hour."

Long application forms. A 15-field ATS and a mandatory cover letter cause fallout. For technical roles where candidates are passive, a simple two-field form (name, CV upload) can double conversion. For tips on writing a posting that grabs attention, see how to write a job posting that stands out.

No salary range. Technical professionals know their market value. A posting without a range often gets filtered out on job boards where candidates set minimum salary filters.

How to test and improve your technical job posting

Publish, measure, refine.

Track application conversion. Divide applications by page views. For example, an average technical posting might convert 4–7% of visitors. With a focused opening and a clear salary range, 8–12% is achievable. If yours sits below 3%, check the opening lines and the title.

Interview your last three hires. Ask what part of the posting made them apply and what they expected but did not find. Their answers show where the posting over-promises or under-informs.

A/B test title and first paragraph. Post the same role with two different titles (one including an equipment brand, one without) and measure which generates more qualified applications. Small changes to the first two sentences often have an oversized effect.

Use Google for Jobs structured data. Make sure your job pages include jobLocation, baseSalary, and employmentType markup. That helps your posting appear correctly in search results with location and salary. To get the markup right, learn how to optimize job postings for Google.

Review the full candidate journey. After clicking "apply," the candidate lands on a job page. If that page loads slowly or hides the apply button, fix it. Read what makes a job posting page attractive to top candidates for a checklist.

How Applyfin helps with hard-to-fill technical postings

Applyfin can help from writing to distribution and screening. AI agents research what PLC engineers or maintenance technicians in your region earn and look for, so your posting can include realistic ranges and relevant technologies. Once live, the platform distributes your job to 2,500+ paid and free channels and tracks visitors, applicants, and cost per applicant per channel. A free tier is available for your first job and 500 profiles monthly. See how Applyfin's visibility features work for distribution and analytics.

Your next step: write less, show more

Pick one hard-to-fill technical role you are hiring for right now. Spend 20 minutes rewriting the posting using the structure above: title with specific technology, opening line about equipment and shift, separate must-haves and nice-to-haves, salary range, and a short application path. Measure the number and quality of applications over the next two weeks. Compare it to the previous version. Adjust one element at a time. That is how you build a posting that reliably attracts the right technical candidate.