As the Internet portal AOL’s (News - Alert) technology group undergoes mobile restructuring, senior vice president David Temkin announces resignation. The AOL senior executive, who is responsible for technology products including mobile software and e-mail, will be leaving the company at the end of the year, said AOL.

The Bloomberg News reported that this move comes at a time when the Internet portal is dismantling a dedicated team of mobile engineers to create a new structure where developers will work within the company’s various media brands, such as Engadget and Moviefone, to build mobile software.

As per the report, Temkin is the third consumer-technology head to leave in a single year. According to reporters Douglas MacMillan and Edmund Lee, “it underscores the challenge AOL, a company focused on media, may be having in keeping technology- oriented staff.”

The report suggests that since AOL separated from Time Warner (News - Alert) Inc. in 2009, chief executive officer Tim Armstrong has been working hard to transform the company from an Internet services provider into an ad-based content provider.

In a telephone interview, Temkin told reporters, “It’s time for me to move on to the next thing and go build.” However, Temkin did not disclose any plans.

The report indicates that Temkin was promoted to the current position in the company’s Palo Alto (News - Alert), Calif., office in March, following departures of Brad Garlinghouse and Eric van Miltenburg. He joined AOL in 2010 after stints as an executive at Palm Inc. and as a software engineer at Apple (News - Alert).

Early this year, AOL announced job cuts, when about 40 people were laid off from the consumer-applications group, wrote the Bloomberg reporters. Sources close to the matter told Bloomberg that the reason for this layoff was the group’s underperformance.

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