Many of this group's members are students or young electronics engineers. Obviously, ones goal is to have a job (or jobs) that you absolutely love and you feel you are actually making a difference. It is rare that you will work for one employer for your whole life (by choice or not). So thinking about your own personal preferences and long term life goals.
Here are my thoughts on the subject: (I am sure there are a lot of comments that can be contributed by the more experienced members)
1.) Reflect upon what you would like your life to be 10 -20 years from now. (married, children, income class, location, and especially, what you really love to do). Is travel appealing to you, are you outgoing or like focusing on one task at a time, etc.

2.) Examine the sub-specialties within your field of training with respect to longevity, income, and the amount of creativity needed. Government jobs are at the bottom of my list. I used to pass engineers in the hall who looked at the ground and shuffled when they walked (I nicknamed them "drones" in the insect world). Look at the subfield with respect to government regulations. These fields rely upon the whims of the regulatory agencies and who is in office at the time. Look at the consumer and commercial markets with respect to the growth possibilities of their customers. An example is the smart phone market. Interpersonal connectivity is now very hot and may remain that way for a long time, but look at the evolution of the technologies.
SW/FW is here to stay, but the tools are moving towards cut and paste creation,

3.) Look at the areas of the country or world that have a concentration of opportunities within any sub-specialty. Don't take a job that has you move to a "one horse town", that is one large company for that location. You will change jobs over your career, just make sure you have opportunities available without moving (traumatic to the family).
In the power field the main locations with many opportunities are: NE USA, Upper Midwest US, Silicon Valley, Texas USA, Singapore (Delta mainly), Ireland, Western EU. Also decide where you would like to live, warm or mixed climate, educational institutions, etc.

Then factor these long-term factors when seeking a job change or when you are approached by a new employer. Run the above factors when evaluating a job change.

Comments?

One last but important consideration is the hiring company itself. Look at the company's website and read the "about" page. See how many acquisitions they had done. This is an indication whether they acquire IP or develop their IP internally. Also see if they have acquired companies whose product complement their own products or acquire competitors. This indicates a desire of the company to increase its product line by expanding their technology, or the management wants to dominate their market and only increase the payout to its shareholders. Jobs are lost in the latter case.
Review the benefits package (insurance packages, training, and what family programs are available) to determine how committed to its employees the company is. Substandard insurance plans are more indicative of the company's view of the "bottom line".
Making a connection with a direct employee is very important. They are typically happy to provide honest feedback to you. Ask about his/her gut feelings about the company. Feelings about the upper management. Do they have a strong control over the organization or do they feel comfortable delegating responsibilities downward within the company. Is overtime routinely expected? This is indicative of whether they staff their company appropriately or are saving overhead costs by overworking the existing staff. An internal connection is always helpful, if not only having an internal reference.

Hi..

I appreciate the method to evaluate the power electronics companies. However, this might not be applicable worldwide. In India, there are very few power electronics companies (viz., GE, etc) interested in developing or acquiring any IP or new products. They are basically followers who follow the trends and never bother to create any disruptive technology or create new markets.

Hence, PE engineers have very few alternatives left and have to be satisfied with the availability around.

Hello Shashank,
The advise from Marty is good advise.
India in terms of technology is moving at a pace. It will not be long before more electronics companies are started there, either by Indian businessmen or foreign companies wishing to take advantage of the well educated workforce.
Charlie

If I my add, I certainly think it is wise to specialise in one field or two. In my own career I lost out because my knowledge became too broad. A thin covering, over a wide area may be great for a quiz show, but the reality in terms of career, it is not good. When there are so many paths to choose, it is harder to choose the right one (or one that is right at the time). By specialising, you reduce the uncertainty of which path to take next.
Charlie

Hi, Charles

Thanks for sharing your experience. I always want to learn more about power electronics in terms of coverage, because I feel uncomfortable when I saw some posts about the topologies or techniques I did not know before. I started to consider how broad should I know or should I stick to something I am good at?
He,Siyu

Hello Siyu,

You are welcome.
I would say... whatever you are most comfortable with. Usually, if someone is good at something, they generally like it.... and in turn, if they like it they spend more time studying or performing that subject... and get better at it. One feeds the other.

If I could have chosen by predicting future technology.. but who knew? One minute two cans and a long piece of string, next minute phones with apps. I would maybe have had more insight if I had read more Arthur C Clarke, or watched more Sci-Fi. We may end up with earpieces in our thumb and microphones in our little finger and heads up displays on our corneas.
Maybe it isn't important to know... just learn with it and as each new technology occurs in your chosen field, embrace it.

Charlie