"in the technical side" is correct and usable in written English.
You could use it to emphasize an aspect or side of a particular topic, for example: "Our team is strong in the marketing side, but weaker in the technical side".
"I'm not that interested, myself, in the technical side of photography," he says.
"Whether you want to get involved in the technical side or the artistic side, you can learn".
I've always been interested in the technical side of music as well as the playing side of it.
"The women tended to be managers and secretaries and not to be involved in the technical side of things," she recalled.
"They look at how a sweater is constructed and then they deconstruct it and then they're bringing in the technical side of the craft".
Aggie likes Daisy and is really interested in the technical side of things – she asks lots of questions about the puppeteers.
Being steeped in both the technical side of encoding schemes and the pop-culture side of comic-book stories and illustrations, he was perhaps the only person so well positioned to understand what was poised to happen with emoji.
"The tail doesn't wag the dog in terms of the technical side driving the dramatic side.
They give us all their assets, and when you look at those amazing cars, there's craftsmanship in terms of the technical side of things – how fast they go, their acceleration and so on – and then the aesthetic side.
Arthur Rothstein was a graduate of Columbia College; as a chemistry major he developed an interest in photography from the technical side, working with film development techniques and eventually becoming a founding member of the camera club at Columbia.
While these officials are highly skilled professionals in dealing with the technical side of the production process, they lack the social training necessary to deal with the politics of distribution.
