It's good practice to start some sentences in a resume with action verbs. While the candidate's personal profile usually starts with a strong personality adjective, job title, or a strong resume headline, the description of work experience should start with action verbs. For example, instead of writing "I was responsible for designing the app user interface", they might say: "Designed the app user interface". It not only saves space. Such descriptions of candidates' duties make a better impression on the recruiter.