What happens after 15 years of IT experience?

Master of one or few rarely helps after 15 years of experience. Database professionals like DBA should have expertise in 2–3 database technologies but after 15 years they should broaden their scope to cover Cloud, Big Data, Infrastructure, Solution design, Enterprise Architecture etc.

How long should you stay with a company?

In general, three to five years in a job without a promotion is the optimal tenure to establish a track record of success without suffering the negative consequences of job stagnation. That, of course, depends on the job, the level you are at, and the organization you work for.

Is 15 years of experience in software development a good sign?

Some of the companies are OK to hire someone with 15 years of experience as Developer. So it is a good sign. I have been to IT industry from last 16 years and when I was 10 years experience I was thinking it is difficult to switch and might need to go into higher roles but started getting development roles.

Is it bad to work for your company for 4 years?

If you have been working for your company for more than four years without being promoted to the next level, you are in danger of becoming irrelevant, and by staying too long you may have lost your ability to effectively compete against the so-called job hoppers. Employers like to recruit the next best and brightest whenever possible.

How long does it take to become a successful IT professional?

I recommend a window of two to four years as suitable time (two years on the low end and four years on the high end) to learn, contribute and master what you need to promote/advance to the next level.

Is it “year’s experience or years’ experience”?

Is it year’s experience or years’ experience? You’re talking about experience belonging to years, so you know it needs an apostrophe somewhere. But where? The simple answer is that it all depends on how much experience you actually have (easy now). If it’s one year, write year’s experience. If it’s multiple years, put years’ experience.