A resume is not an inventory of everything a person has ever done. It is a one-page sales document that answers a single question: why this candidate is worth interviewing for this position. That definition settles most doubts about what to include before they come up.
Even so, some content always goes in, some depends on the profile, and some actively hurts. This guide separates them into those three categories and closes with the general rule for deciding any borderline case.
In this guide
The must-haves: sections that always go in
Every competitive resume, in any field and at any level, rests on the same skeleton:
- Contact information: full name, city and state, phone with country code if applicable, professional email. That is enough.
- Professional title: one line under the name that says what the person is (Staff Accountant, Frontend Developer). Without a title, the recruiter has to deduce the profile, and they will not spend time on that.
- Summary: two to four lines with track record, main strength and goal. It is the hardest section to write well; there is a dedicated guide with resume summary examples.
- Work experience: each position with job title, company, dates (month and year) and 3 to 5 achievement bullets with measurable results. This is the section that decides the interview.
- Education: degree, school and year. Brief when there is established experience.
- Skills: between 6 and 12, with the exact names of the tools. Which ones to pick and how to order them has its own guide.
The full development of each section, with examples, is in the guide to writing a resume from scratch.
The optional: adds value depending on the profile
Some content is not mandatory but tips the balance in the right context:
- LinkedIn or portfolio link: nearly mandatory for digital, design or development profiles; optional for everyone else. Only if the profile is current and well maintained.
- Languages: always, as long as they are above a basic level, with a recognizable scale (B2, C1, "professional working proficiency"). A real second language is one of the data points that opens the most doors, especially Spanish in many US markets.
- Certifications: with the exact name and issuing institution. Three relevant ones are worth more than a list of ten.
- Volunteer work: adds value if it is recent, sustained or relevant to the position. In a junior profile it can take center stage, as explained in the guide on a resume with no experience.
- GPA: only for recent graduates and only if it is 3.5 or above.
- Security clearance or work authorization: only when the posting asks for it, and then in a single line.
The test for any optional item is simple: if a recruiter reads it, does it raise the odds of an interview for this particular position? If the answer is "no" or "not sure," that space is better used by something else.
What hurts: content to remove today
Some content is not neutral; it works against the candidate. It takes up space, dates the document or raises unnecessary doubts:
| Include | Leave off |
|---|---|
| City and state | Full street address |
| Professional email (first.last) | Informal emails inherited from high school |
| A concrete professional title | The words "Resume" or "Curriculum Vitae" as a heading |
| Achievements with numbers | Duty lists copied from the job description |
| Languages with a real level | "Basic Spanish" (if it is basic, it does not filter in your favor) |
| Experience from the last 10 to 15 years | The first job from 20 years ago in another field |
| Skills with the exact tool name | Bars or stars showing "skill level" |
On top of that table come the outright exclusions, things no serious process should request at the application stage:
- Photo, date of birth, marital status, Social Security number. Personal data that adds nothing and opens the door to bias or identity theft. US employers routinely discard resumes that include a photo.
- "References available upon request." It is assumed; the line only wastes space.
- Generic hobbies. Reading, traveling and listening to music do not set anyone apart from anyone.
- Self-assessment adjectives: proactive, dynamic, results-oriented. Without a fact to back them up, they are noise.
- Salary expectations, unless the posting explicitly asks for them.
Content that hurts does not always cause a rejection on its own, but it competes for the 6 to 8 seconds of the first read. Every weak line steals attention from a strong one.
The general rule: relevance to this posting
All of the rules above come from a single principle: the resume is written for the position, not for the biography. A piece of information is relevant when it connects to what the posting asks for; the same item can be essential in one application and irrelevant in another. Advanced Excel is central to an analyst role and decorative for a field sales role.
In practice, this means keeping a complete master resume and cutting one version per posting: title aligned with the job description, a summary that mentions what the posting prioritizes and skills reordered accordingly. To speed up that adjustment, there is a tool that compares the resume against the job description and flags what is missing and what is excess.
For any doubt about a specific item, the question that settles it: does this help land this interview? If it does not, it stays out, however true or interesting it may be.
Frequently asked questions
Which sections does a resume absolutely need?
Contact information, professional title, summary, work experience with achievements, education and skills. That is the minimum skeleton; languages and certifications are added when they exist and contribute to the position.
Do all previous jobs have to be listed?
No. The last 10 to 15 years go in, or the positions relevant to the posting. An old job in another field can be condensed to one line or left off entirely; a resume is a selection, not a sworn statement of full employment history.
Should the address go on a resume?
Only city and state (and country, if the search is international). The full street address adds nothing to the selection process and is personal data that should not be shared at this stage.
Do hobbies belong on a resume?
Only when they connect to the position or demonstrate something concrete: competitive sports speak to discipline, a photography project adds to a creative profile. Generic hobbies take up space without setting the candidate apart.
What personal information should be excluded?
Photo, date of birth, marital status, Social Security number, full address and anything else that enables bias without contributing to the position. Serious processes request that information at the hiring stage, not on the resume.
Should salary expectations be included?
Only if the posting explicitly asks for them. Including them unprompted can end the application early, either for landing above or below the expected range.