The assignment
Build a tool that takes a job description and customises your resume to match. Outputs a finished PDF — not a chat-bound Gem.

JD2CV is a multi-job-description ATS-matching platform that scores a resume against several job postings at once and generates a tailored resume and cover letter, accessible through account sign-in.
Saket shipped a deployed web app you can open. Parts of it sit behind a sign-in, so this read leans on what is public plus Saket's own description.
What it demonstrates
What is not shown
Take this awayThe quiet skill on display is scoping to an artifact. 'Produces a file a recruiter opens' is a spec; 'helps with resumes' is a wish.
The output format is the product. A resume that only lives in a chat window can't be sent to a recruiter — forcing a real PDF is what turns a nice answer into a tool someone would actually use.
A finished file, not a chat answer
Something you could attach to an application: a formatted, downloadable PDF. The brief ruled out anything that only ever prints text into a chat window.
Matching that has actually read the JD
Responding to that specific posting's language and priorities and reordering real experience — as opposed to sprinkling its keywords into the same resume.
It survives the second job description
A pipeline you can run again on Monday, not one artful manual edit dressed up as a tool.
No numeric scores are published here. These pages are written reads of what each builder shipped — the build is the point, not a mark out of a hundred.