How do I negotiate a higher salary at a new job?

Start by doing research on market rates for your role using sites like Glassdoor, LinkedIn Salary, or Levels.fyi so you have concrete data to back your ask. Wait until you have a written offer before negotiating, since that's when you have the most leverage. When you counter, be specific rather than giving a range, because employers tend to anchor to the lower number. Say something like "Based on my experience and market data, I was expecting something closer to X. Is there flexibility there?" Stay confident but collaborative in tone. If they can't move on base salary, negotiate signing bonuses, extra vacation, or remote work flexibility. Most employers expect negotiation and rarely rescind offers because someone asked.