25 and senior developer means nothing. The role not necessarily mean salary and if it does, good job for them.
The most important thing is to understand that people who started at 20 had 5 years of experience. People on their 40s who started in their 20s have 20 years of experience.
If you want to be as good as someone your age that started 5 years ago, you'll have to study hard and work in meaninful project to build your experience.
Also, to ramp up, you can learn from them - that's likely, besides studying what will help you more.
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25 and senior developer means nothing. The role not necessarily mean salary and if it does, good job for them.
The most important thing is to understand that people who started at 20 had 5 years of experience. People on their 40s who started in their 20s have 20 years of experience.
If you want to be as good as someone your age that started 5 years ago, you'll have to study hard and work in meaninful project to build your experience.
Also, to ramp up, you can learn from them - that's likely, besides studying what will help you more.