A résumé used to be seen as a formulaic recitation of your job history, and everyone put an inane objective at the top. Today, a résumé is properly viewed as a one-page marketing campaign in which you attempt to sell your product (yourself) to a customer (your hopefully soon-to-be-employer).
The problem with those old objectives was that they accomplished nothing, and they used the most valuable chunk of real estate on your résumé to do it. Imagine that you're in charge of hiring someone for a new position as a civil engineer and you see the line, "Objective: To obtain a rewarding position as a civil engineer." What does that tell you about a candidate? How does that make a candidate different from every other candidate for this job? The answers, if you're keeping score, are: "nothing," and "it doesn't."
So leave the objective off. In its place, use a header that highlights who you are and why you're awesome in one sentence. "Civil Engineer with 15 Years of experience – last 10 projects on time and under budget." That will get some attention.