How to write a professional summary that gets read

The summary is the first thing read and the last thing written. It has three to four seconds to make the reader continue.

The formula

[Role] + [experience level or years] + [specific strength with evidence] + [optional: what you want next].

Worked examples

• "Backend engineer with five years in high-traffic e-commerce; reduced checkout error rate from 2.1% to 0.4% and now leading a three-person payments squad."
• "Registered nurse, eight years in acute medicine, band 6. Competent in post-operative care and discharge planning; oriented four newly registered nurses in the past year."
• "Final-year economics student graduating June 2026 with a placement year in risk analysis; built the forecasting model used in my dissertation."

What to avoid

• "Hard-working team player seeking a challenging role" — says nothing verifiable
• First-person biography of your childhood
• Buzzwords with no example behind them
• More than about 560 characters — it stops being read

Length

Two to four lines, roughly 240 to 560 characters. Below 180 you are probably under-explaining; above 700 you are writing a paragraph nobody will finish.