RESUME MISTAKES

Stop Losing Jobs Over a Bad Resume

Fix the hidden errors that keep hiring managers from seeing your maintenance expertise.

How This Page Helps
This page helps Maintenance Technicians identify frequent resume pitfalls, understand why they hurt their job prospects, and apply concrete fixes to create an ATS‑friendly, results‑driven document.
Identify the 5 most damaging resume mistakes for maintenance roles
Learn why each mistake lowers your ATS score
See side‑by‑side before‑and‑after examples
Get actionable steps you can implement in minutes

Common Mistakes That Kill Your Chances

Each mistake includes why it hurts, how to fix it, and before/after examples

Using a Generic Job TitleHIGH
Why it hurts
  • Hiring managers skim for specific titles and may overlook you
  • ATS keyword filters often look for exact role names
  • It dilutes your professional brand
How to fix
  • Replace "Maintenance Worker" with "Maintenance Technician" or the exact title from the job posting
  • Add a seniority modifier if appropriate (e.g., "Senior Maintenance Technician")
  • Include the industry focus, such as "Industrial Maintenance Technician"
❌ Before

John Doe Maintenance Worker ABC Manufacturing

✓ After

John Doe Industrial Maintenance Technician (Level II) ABC Manufacturing

ATS Tip
Match the exact title used in the job description; include it in the headline and experience headings.
Detection Rules
title contains "worker" or "helper"
absence of "technician" keyword
Resumly Tip
Swap generic titles for the precise role name the employer posted.
Listing Duties Without Measurable ResultsHIGH
Why it hurts
  • Recruiters can’t gauge your impact
  • ATS scores favor quantifiable achievements
  • It makes your resume look like a task list
How to fix
  • Turn each duty into an achievement with numbers or outcomes
  • Use action verbs and include metrics (e.g., downtime reduced, cost saved)
  • Focus on results that align with the job’s key responsibilities
❌ Before

- Performed routine equipment inspections - Repaired HVAC units - Managed inventory of spare parts

✓ After

- Conducted 150+ preventive inspections quarterly, reducing equipment downtime by 22% - Diagnosed and repaired HVAC failures within 2 hours, improving system uptime to 98% - Optimized spare‑parts inventory, cutting excess stock by 15% and saving $8,000 annually

ATS Tip
Include keywords like "reduced downtime" and "improved uptime" that match common maintenance KPIs.
Detection Rules
bullet points start with verbs but lack numbers or % signs
no mention of outcomes
Resumly Tip
Add a metric or result to every bullet to show impact.
Omitting Certifications and Safety TrainingMEDIUM
Why it hurts
  • Many employers require OSHA, EPA, or manufacturer‑specific certifications
  • ATS filters often search for these credentials
  • Missing credentials can signal a lack of qualifications
How to fix
  • Create a dedicated "Certifications" section near the top of the resume
  • List each certification with issuing organization and expiration date
  • If you have relevant safety training (e.g., Confined Space, Lockout/Tagout), include it
❌ Before

Skills: Electrical troubleshooting, HVAC repair, PLC programming

✓ After

Certifications: - OSHA 30‑Hour General Industry (2023) - EPA Certified Refrigerant Handler (R‑410A) (2022) - Certified Maintenance & Reliability Technician (CMRT) – SMRP (2021) Skills: Electrical troubleshooting, HVAC repair, PLC programming

ATS Tip
Use exact certification names; ATS often scans for "OSHA 30" or "CMRT".
Detection Rules
no "certifications" heading
absence of known certification keywords
Resumly Tip
Add a Certifications section with full titles and dates.
Poor Formatting of Technical SkillsMEDIUM
Why it hurts
  • ATS may miss skills hidden in paragraphs
  • Hiring managers struggle to locate key competencies quickly
  • Inconsistent formatting looks unprofessional
How to fix
  • Create a bulleted "Technical Skills" block
  • Group skills by category (e.g., Electrical, Mechanical, Software)
  • Use commas or line breaks, not long sentences
❌ Before

Technical Skills: Able to read schematics, troubleshoot PLCs, perform welding, use CMMS, understand HVAC controls, and follow safety protocols.

✓ After

Technical Skills: - Electrical: Schematics reading, motor rewinds, conduit bending - Mechanical: Preventive maintenance, hydraulic systems, welding (MIG/TIG) - Software: CMMS (MPulse, Fiix), PLC programming (Allen‑Bradley, Siemens) - Safety: OSHA 30, Lockout/Tagout, Confined Space

ATS Tip
List each skill as a separate keyword; ATS parses commas and line breaks efficiently.
Detection Rules
skills presented in a paragraph
lack of category headings
Resumly Tip
Switch to a clean, bulleted skill list with clear categories.
Neglecting Location and Date ConsistencyLOW
Why it hurts
  • ATS may reject resumes with ambiguous timelines
  • Recruiters need clear employment dates to assess experience length
  • Inconsistent location formats can cause parsing errors
How to fix
  • Use month / year format (e.g., Jan 2020 – Present) for every role
  • List city and state consistently (e.g., Dallas, TX)
  • Align dates to the right side of the entry for readability
❌ Before

ABC Plant – Maintenance Technician Dallas, Texas 2018 – 2022

✓ After

ABC Plant – Maintenance Technician Dallas, TX Jan 2018 – Dec 2022

ATS Tip
Standardize dates as "MMM YYYY" and locations as "City, ST" for optimal parsing.
Detection Rules
dates missing month
state written in full
Resumly Tip
Adopt the "MMM YYYY" date style and abbreviate states to two‑letter codes.
Formatting Guidelines
File Types: PDF, DOCX
Sections: Contact Information, Professional Summary, Technical Skills, Certifications, Professional Experience, Education, Additional Training
Naming: FirstName_LastName_MaintenanceTechnician_Resume.pdf
Consistency
Length: 1‑2 pages for 0‑10 years of experience; 2‑3 pages for 10+ years
Date Format: MMM YYYY (e.g., Jun 2021)
Location Format: City, ST (e.g., Chicago, IL)
Resume Quality Checklist
  • Use the exact job title in the headline
  • Add a concise 2‑sentence professional summary with key metrics
  • Include a Certifications section with dates
  • Format Technical Skills as bulleted categories
  • Show employment dates as "MMM YYYY – MMM YYYY"
  • Proofread for spelling and grammar
ATS Alignment Guide
Common ATS Systems: iCIMS, Workday, Greenhouse, Lever
Keyword Strategy: maintenance technician, preventive maintenance, HVAC, PLC, OSHA 30, CMRT, downtime reduction, equipment reliability
Heading Format: Use standard headings like "Professional Experience" and "Technical Skills"
Quick Fix Workshop
Paste your current resume text below
  • Replace generic titles with specific ones
  • Add measurable results to each bullet
  • Insert a Certifications block
  • Reformat Technical Skills into categories
  • Standardize dates and locations
Download Checklist PDF
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