Overall, this is an excellent start to a compelling essay. Keep in mind that although the committee allows you to write up to five pages, three double-spaced pages is usually adequate. Feel free to add more detail, but make sure your text is concise and transparent. You might consider "writing" ideas and then "rewriting" them. Too often, authors put ideas onto the page, but do not render those ideas compellingly. Giving your sentences a bit of extra effort, and giving your experiences a bit of extra reflection, will result in a persuasive essay that compliments your accomplishments and character.
I’m hoping I’ll make a better decision the next time my ideals are challenged. If nothing else, my summer job has made me more aware of the types of information I want to collect before I accept a job and arrive at my first day of work. What I learned about myself during my summer work wasn’t exactly flattering. Indeed, it makes me realize that I need college so that I can develop not just my engineering skills, but also my ethical reasoning and leadership skills. I like to think that in the future I’ll use my engineering skills to better the world and tackle noble causes like climate change and sustainability. My bad decision this past summer has inspired me to look ahead and find ways to make my ideals and my love of engineering work together.