The tone of your resume should be professional, confident, and clear. It should sound like you without being casual or arrogant.
Professional Tone
Use formal language. Avoid slang, humor, or overly casual phrases. Write in third person or first person consistently (first person is less common on resumes; fragments and implied "I" are standard). Use strong verbs: "Led," "Managed," "Increased," "Developed."
Confident but Not Arrogant
State your achievements clearly and with numbers where possible. Do not oversell with superlatives ("best," "top") unless they are verifiable. Avoid underselling ("helped with," "assisted in" when you led). Be factual and confident.
Clear and Concise
Use short sentences and bullet points. Avoid long paragraphs. Every line should add value. Cut filler words and redundant phrases.
What to Avoid
Avoid negative language ("failed," "problem"). Avoid vague phrases ("responsible for tasks"). Avoid jokes, emojis, or exclamation points. Keep the tone consistent from summary to experience to education.