I have a question about Covenants Against Competition clause I signed during my employment

Here is the clause : During Employee's employment for a period of two (2) years after he ceases to be employed by the Company, for any reason, Employee shall not by himself or through his partners, agents, representatives, servants, employers, employers and/or any and all persons and entities acting for or with him, directly or indirectly engage in any similar or related business in competition with the Companywithin a twenty five (25) mile radius of any geographic area where the Company is actually engaged in business or maintains sales or service representatives or employees, or where Employee serviced customers, clients and/or accounts of the Company. I am employed as a Software Developer and I looking to switch jobs at a competitive company. Would the above clause prevent me from doing so? I have been employed by my current Company for 2 and a half years. I am currently employed in Pennsylvania and I seeking new employment in California