Every job description is a cheat sheet. The hiring manager already told you exactly what they want — it's just buried under corporate filler. I got tired of manually highlighting keywords in job postings, so I built a tool that does it automatically: Job Description Keyword Extractor . Paste a posting, get categorized keywords. Technical skills, soft skills, tools, certifications — all sorted by how often they appear. Building it taught me a few things about how ATS systems actually work. Most resumes fail on keywords, not formatting Everyone worries about fonts and columns and whether their PDF will parse correctly. That stuff matters, but it's not what kills most applications. The real filter is keyword matching. ATS systems score resumes based on how many keywords from the job description appear in your resume. Not synonyms. Not related terms. The exact words. If the posting says "Kubernetes" and your resume says "container orchestration" — that's a miss.…