Your bullet points read like job descriptions, and anyone else who submits a resume that has had a job remotely similar to yours will sound about the same. Focus on your projects and accomplishments while employed, and make it look less like a job post.
I know you aren't emphasizing the front end skills, but leaving them out in the open if you aren't great, and aren't up to date with your front-end skills (tables, adding classes to make paragraphs look like headings - just use headings) can make any semi-critical resume reviewer cry "eek!.." Showcase what you are best at, and don't try to justify your hiring with things you "kind of, sort of" know how to do.
As others have said, tailor your bullet points to the job you are applying for. I don't care about your systems engineer work if you're applying to be a junior dev. Talk about your internal tools and app development. Those should be your bullet points - not that you "started and completed projects" or "were a member of a team".
Focus on your strengths and your goals!