Hi,
The native is pursuing the right career. He is bound to be successful in government services. As per the details posted by you his ascendant is karka and current dasa is antardasa of ketu in the mahadasa of budh. The negative effect is because mangal is in the same house as budh (9<sup>th</sup> house) giving him defeat in every effort. He is just stuck on the fortune front.
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The only effective remedy for all round success of the native is surya pooja. Chanting of surya mantra 125000 times within a period of 40 days will surely help him. If you have a south Indian temple nearby then he can perform surya pooja on Sundays throughout his life. July 2013 to May 2014 he is bound to be at a very high governmental post.
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If the effect is found positive for the next 40 days there will be stronger remedies that can be applied. You can always mail me at paragk72@gmail.com
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Wishing the native the very best.