I had asked someone for some help in general fiance and thought it maybe helpful here. Since OP has an engineering and economics emphasis, perhaps IT/CS in finance will not be too difficult to pickup. I personally have considered this path instead of an MBA and/or certification.
I am getting my master's in Operations Research right now. It's what financial engineering came from. I'm basically getting up to speed to be a quant since I missed out on that in undergrad..
Anyway, a few things. What city are you located in, and what school did you get your degree from? That matters so much right now with the job market being so rough. You at least have an internship to tide you over right now.. how long is it? And does it feed into full time positions at that company? Honestly, if it does, that is probably your best option right now because you've already got your foot in the door at a company.
Other than that, a CFA is awesome if that is something you are willing to pursue. It levels the playing field for everybody.. a person from some no name state university who has a CFA recognizably has the same skills as a person from Harvest who has a CFA. It is a very hard series of tests and definitely proves to employers that you have the skills needed for any asset management or financial analysis-intense position.
An MBA? MBAs are worthless in my opinion. I have taken MBA courses at 2 ivy league universities and they were no harder than my undergrad finance courses. They are basically for people who need to buy a network and not actually have to work very much. I loathe MBA programs if you can't tell.. they're a joke. There has been a lot of chatter in the media lately about MBA programs being phased out within 20 years, and a lot of employers stating that Operations Research degrees will replace the MBA because it is truly the place where technical meets practical.
Anyway, that got long winded pretty quickly, haha. I hope I answered your questions.. if I didn't, or if you have more questions about stuff, just pm me.
Well, let's see. My first advice, if you want to definitely work in finance, would be to 1) go after your CFA, and 2) plan on going back to school but only if you can get into a top tier school. Also, I can't stress enough how much more valuable I believe a technical masters is over an MBA.
As far as what kind of career you would pursue given that you stay within the realm of finance and statistics.. there are numerous things. In finance, you would most likely be in asset management, whether it be working in private wealth management or higher level portfolio/fund management. You can also look at positions dealing with securities analysis/valuation. In statistics, you could pretty much look at statistical consulting jobs, or pretty much any job (in any industry) that requires analyzing large data sets and doing some inferential analysis of the data. That is in high demand right now, so if you have experience in data mining and/or statistical analysis I would suggest checking that out.
As for what resources I recommend.. Wall St Oasis is a decent forum to read. Glassdoor is also a great resource to see what companies are like from people who have interviewed there. As far as books go, it really depends on where your interests lie. That is such a vast category to make suggestions in, and personally because I always think hands on experience is the best teacher rather than books anyway, I have a hard time suggesting anything there for you. If you could be more specific about what you're looking to read I could tell you.
For now, if I were you, I would focus on this internship you have. Work your ass off, show them you add value to the company and that you're worth hiring. Hopefully you make it full time after the 3 month period, and if so, stay there for 2-3 years to get some good experience. Working at a company that small can provide some GREAT experience. Work toward your CFA while you're there, and if at some point you think it's necessary to go back to school to move up a tier in the workforce, look into it at that point. For now, like I said, I would only be focused on the internship and doing my best to make it into a full time position.
Hope this helps.
(just skimmed through it and realize it emphasizes the CFA as at the time it was on my interest as well) I am stressing the technical MBA part in combining computing/programing and statistics with finance.
As far as well roundedness is concerned, programs that are hybrids between technical/business.. i.e., a program where you're taught technical skills and how to apply them in the business environment, are in my opinion the best route for post-graduate education nowadays. MBA's are actually not very well rounded as they see everything for the most part from a qualitative business perspective, and most (aside from those with engineering backgrounds) really lack the technical skills that most employers desire today and will desire even moreso in the future. Just food for thought
Hope it is helpful. Also this was back in 10/2011 so it may vary now since I think the field is quite dynamic.