How will you feel?

It's okay to feel undervalued. Take some time to process your feelings. And then Invest your energy into learning and succeeding in your new position. This sets you up for future raises and promotions.

You don't have all the details. Your teammate's salary might be an outlier, or they might have negotiated aggressively.

Try to focus on your own growth and value creation, you'll be well-positioned for future success. If the compensation gap persists at your new company after a while, you can re-evaluate based on your performance and market value

It's natural to feel undervalued or upset. You invested time and energy training your teammate, and their higher salary can be a blow.

Don't dwell on comparisons. Your self-worth isn't defined by your teammate's salary

Focus on your own growth journey and the valuable skills you bring. Use this as motivation to negotiate confidently in your new role. Your experience and qualifications are assets that will pay off in the long run. Stay positive and proactive. In every career phase, you will encounter individuals earning more with less experience. Instead comparisons, channel your energy into productive actions that bring about positive change

First of all, don't trust what people tell you. Most people inflate their salaries. Check what's the average salary for your role and experience on this platform and others too. And, make sure you land on the higher end of the range.

See what he has an you don't. I think our juniors usually have better conversation skills and confidence (by the virtue of their youth). If you identify that, then work on those.

Are you sure your senior is not thinking same about you?