Get hired faster —
Start with a better resume

Yes — completely free, no sign-up required. Upload your PDF or DOCX and get your full ATS score, section breakdown, skills gap analysis, priority fix roadmap, and before/after rewrites instantly. hackajob built this tool to help tech candidates put their best resume forward.

An Applicant Tracking System (ATS) is software used by employers to filter job applications before a human recruiter sees them. When you upload your resume, the ATS parses it into structured fields — name, contact details, work history, education, and skills — then scores it against the job description. The most common failure points are missing keywords, non-standard section headings, tables and columns that confuse the parser, and file formats that strip formatting. hackajob's AI resume checker replicates this parsing process, flagging the same issues a real ATS would penalise. Studies cited by LinkedIn suggest that up to 75% of resumes are rejected by ATS before reaching a recruiter, making compatibility the single most important factor in the early stages of a job search.

The five most frequent ATS failure causes are: (1) keyword mismatch — the resume does not mirror the exact language used in the job description; (2) non-standard headings — using "Career History" instead of "Work Experience" confuses parsers trained on common templates; (3) complex formatting — tables, text boxes, headers and footers, and multi-column layouts often get scrambled during parsing; (4) missing contact fields — some ATS systems reject resumes with no phone number or LinkedIn URL in a recognised position; (5) incorrect file format — PDFs with embedded fonts or scanned images cannot be parsed reliably. hackajob's resume checker identifies all five categories and generates a priority fix roadmap ranked by the impact each issue has on your overall ATS compatibility score.

ATS scoring varies by system and employer, but a compatibility score of 80% or above is generally considered strong enough to pass automated screening for a role you are qualified for. Scores below 60% indicate significant keyword or formatting gaps that will likely result in automatic rejection regardless of the candidate's actual experience. The score alone is not sufficient — a resume can score 90% on ATS compatibility but still fail to land interviews if the underlying content is weak. hackajob's AI resume checker provides both an overall ATS compatibility score and a section-by-section breakdown covering contact information, professional summary, work experience, education, and skills, so you can see exactly which areas are dragging your score down and address them in order of priority.

The widely accepted standard in 2026 is one page for candidates with fewer than ten years of experience, and two pages for senior professionals or those with extensive publication, project, or patent records. Academic CVs and executive profiles are exceptions where three or more pages may be appropriate. Recruiters at high-volume hiring companies typically spend seven seconds on an initial resume scan, according to research cited by the Ladders. A one-page resume forces prioritisation — every line must earn its place. A bloated two-page resume for a junior candidate signals poor editing judgment. The hackajob AI resume checker estimates your resume's page count and flags sections that add length without adding value, such as an objective statement, references available on request, or roles older than fifteen years.

Effective tailoring targets three areas: keywords, the professional summary, and the top bullet point of each role. Start by extracting the skills and tools named in the job description — these are the terms the ATS will search for. Mirror the exact phrasing where possible; if the posting says "stakeholder management," use that term rather than a synonym. Next, rewrite your professional summary in two to three sentences that reflect the seniority level and responsibilities described in the posting. Finally, reorder your bullet points so the most relevant achievement appears first in each role. This approach typically takes 20 to 30 minutes per application and can lift ATS compatibility scores significantly without changing the core content of the resume. The hackajob AI resume checker shows which specific keywords are missing for your target role.

ChatGPT is useful for drafting and rewriting sections, but AI-generated resumes tend to use generic phrasing that fails ATS keyword scoring and reads the same as countless other candidates. Always personalise the output with real metrics and specifics, then run it through an AI resume checker to catch weak language before applying.

Lead every experience bullet with a strong action verb and a quantified result ("Reduced page load time by 60%", not "Responsible for performance"). Tailor your summary and skills section to each role. Use a clean single-column layout. Apply within 24–48 hours of a posting going live — early applicants get significantly more recruiter attention.

Don't list references on your resume at all. Most recruiters expect to request them separately, and including them wastes valuable space. If a job posting explicitly asks for references, add a single line — "References available upon request" — at the bottom. Use the space you save for an extra achievement bullet instead.