The establishing shot of the building where Neo works shows the name "METACORTEX" on the building. However, when Neo is crawling between the cubicles to escape the Agents, a sign on the wall spells it as META CORTECHS.
I've seen this one before, Although it is most likely to be a mistake. It's very possible somebody at metacortex ordered a small banner spelled wrong. I know plenty of businesses that are not great at spelling. "quik" whatever comes to mind.
It's obviously an oversight, but I like the idea that you can explain it away as a change in the matrix. After all, this is the scene where the agents show up to get Neo. . .
One element of this film that most people fail to see is the sense of humour within it. The Wachowski Brother's include numerous and uncountable visual jokes, so perhaps this is just another to add to their list.
In My Humble Opinion.. this is a large company, and Neo is one of their programmers. This might be the companies "cutsy" play on words calling their programmers "techs" Meta CorTECHS. Just a suggestion