I would first like to say I am taking this question seriously. Any humor found in this answer is not to belittle or insult the OP.
I own a tuxedo and have always liked the look of wearing one, but would it be considered proper to wear one to a technical interview for a development role?
I have to agree that I also like the look of wearing a tuxedo but I would have to say NO this is not suitable. This reminds me of Step Brothers:
For context of the Step Brothers reference check out the scene (NSFW).
The definition of a Tuxedo is:
A dinner jacket (British English) or tuxedo (American English, also colloquially known as "tux"), dinner suit, or DJ is a semi-formal evening suit distinguished primarily by satin or grosgrain facings on the jacket's lapels and buttons and a similar stripe along the outseam of the trousers.
I've done a quick Google search:
Can I wear tuxedo for interview?:
Tuxedo is classified as a highly formal, evening wear outfit. You will be considered a dandy, if you wear it to an interview.
A business suit is ideally 2-piece with 2 or 3 buttons. A blazer would also do, if it is for a middle or junior level position. The workwear trends are moving towards Business Casual.
It is okay to ask before hand, if the company has a dress code. It is also better to err on the conservative side, rather than be caught on the wrong foot, in being too casual. Dressing well and in an appropriate manner shows that you are taking the interview seriously.
It depends upon the job you are interviewing for - perhaps it is appropriate for a narrow slice of interviews (maitre de?, symphony conductor?). But for the rest of us looking for gainful employmeant, a solid navy or charcoal suit, white shirt, red or blue tie, polished black dress shoes, is a far safer bet.
Are tuxedo suits appropriate for a job interview?:
Not at all. a tuxedo is an ocassion wear meant to be worn in parties, award ceremonies, wedding and similar events. There are specified black tie events where tux are more or less norms.
Unless the job is maitre d’ at a VERY upmarket hotel or restaurant where it will be the working uniform
The tuxedo, or dinner suit, is for formal dinners and events only
It may also be helpful to know the differences between a tuxedo and a suit:
On this article there is also a summary which again hightlights when it's appropriate to wear a tuxedo:
Both suits and tuxedo are important elements of men’s wardrobe undeniably, and both of them have their own significance. Which one is better is always depend on upon the place or events it is expected to wear. Suits, as we highlighted above, are comparatively more common that’s why’s they are the best to wear daily at the office or formal gathering. Tuxedo is the premier choice for semi-formal events like high school proms, black tie events, and weddings; it gives you a great opportunity to show your elegance and make yourself look unique.
I'm sure there is much more out there about when and where you should wear a tuxedo but I would have to say in your case it would not be deemed appropriate.
If you do end up attending an interview in your tuxedo please do let us know how you got on.