Buy side to Sell side - can it be done?

I'm taking it the PE firm isn't a creditable firm or no opportunity for full time?

There really is no reason you would want go to buy side -> sell side.

is this fulcrum?

From what I see, it's more common to see the opposite, from IB to PE. It's rarely from PE to IB, because the skillset that you learn in PE is more in-depth technically with more operational flavors (from the portfolio companies), kinda of good if you wanted to learn more about building a business and learning how to dispose them at an optimal price.

The Sell-Side Job Description

Simply put, the job of a sell-side research analyst is to follow a list of companies, all typically in the same industry, and provide regular research reports to the firm's clients. As part of that process, the analyst will typically build models to project the firms' financial results, as well as speak with customers, suppliers, competitors, and other sources with knowledge of the industry. From the public's standpoint, the ultimate outcome of the analyst's work is a research report, a set of financial estimates, a price target, and a recommendation as to the stock's expected performance.

In practice the job of an analyst is to convince institutional accounts to direct their trading through the trading desk of the analyst's firm and the job is very much about marketing. In order to capture trading revenue, the analyst must be seen by the buy-side as providing valuable services. Information is clearly valuable, and some analysts will constantly hunt for new information or proprietary angles on the industry. Since nobody cares about the third iteration of the same story, there is a tremendous amount of pressure to be the first to the client with new and different information.

The Buy-Side Job Description

In contrast to the sell-side analyst position, the job of a buy-side analyst is much more about being right; benefiting the fund with high-alpha ideas is crucial, as is avoiding major mistakes. In point of fact, avoiding the negative is often a key part of the buy-side analyst's job, and many analysts pursue their job from the mindset of figuring out what can go wrong with an idea. (Learn how to generate higher returns while keeping the same risk profile, see Adding Alpha Without Adding Risk.)

On a day-to-day basis, the jobs do not look all that different. Buy-side analysts will be reading news (though more of it is from sell-side analysts than the sell-side analyst would read), tracking down information, building models, and otherwise going about the business of trying to deepen their knowledge of their area of responsibility – all with an eye toward making the best stock recommendations.

but y doe