apparently I don't understand scope in JavaScript

jobs.js

$(document).ready(function() {

    var job_postings_data = JSON.parse($("#job_postings_data").html());
    for (var job in job_postings_data) {
	var job_item_selector = "#" + job + "-item";
	$(job_item_selector).on("click", function(e) {
	    var this_job = job;
	    e.preventDefault();
	    $(".job-post-item").removeClass("selected");
	    $(this).addClass("selected");
	    console.log(this_job); // always prints the last job in job_postings_data (!?)
	});
    }

});