1st year Strategy Associate Resume Review

This is by no means an exhaustive review -- others will chime in with something more complete -- but here are a few things that jump out:

-- "Worked for 6 different clients, including due diligence..." This is grammatically flawed. Given the way you started the bullet, the items following "clients" are supposed to be names of companies, NOT the tasks you performed. There is no subject-predicate agreement.

-- Change "potential growth in 8 -- 12% a year range" to "potential growth of 8 to 12%." What you currently have is a poor attempt at sounding conversational, not professional.

-- You co-founded your start-up. You did not cofound it.

-- Your start-up should have generated "monthly revenue," not "month revenue."

-- "Startup" and "start up" both appear in your resume. The spelling of the term has to be consistent. My recommendation would be to use "start-up." Nouns made by combining two words are typically hyphenated (e.g. make-up). Not knowing proper usage of the hyphen contradicts your claim of fluency in English.

-- Speaking of which, take out that "Fluent in English" bit. It's superfluous, and given your tendency to make grammatical errors in your resume, it will make you look silly.