Virtually every potential employer will want to see a resume from you. The resume will determine who gets a job interview. Your resume is a mini-statement about yourself. After reading your resume the employer should have a better "feel" for you as a person and as a potential employer. It serves to get acquainted with the employer so that they can decide if they want to know more about you.
You want to use intelligent language. However, you don't want to try and impress the employer with long, flowery, or uncommon words or phrases. Use everyday language whenever possible. Of course, if you are applying for a highly technical position, it's acceptable to use some of the special terms used in that particular profession. But as a rule you should keep it simple and straight to the point. The word resume comes from the French word "resumer" which means to summarize.
In using this format, the main body of the document becomes the Professional Experience section, starting from the most recent experience and moving chronologically backwards through a succession of previous experience. The reverse chronological resume works to build credibility through experience gained, while illustrating career growth over time and filling all gaps in a career trajectory. A chronological resume is not recommended to job seekers with gaps in their career summaries. In the United Kingdom the chronological resume tends to extend only as far back as the applicant's GCSE/Standard Grade qualifications.
Finding a reliable resume writer is the next challenge for anyone who decides it is time to make the investment. A good resume writer needs to have a history of writing and editing experience, along with knowledge of recruiting and hiring practices. What credentials determine an effective resume writer? There are resume writing certifications available and that certainly demonstrates commitment to the job. My background is different than that as I have advanced education and experience as an educator, writer, and author. The most important element is that anyone who works in this type of industry needs to have some evidence of writing experience.