hi,

see generally the companies hire for candidates who have done bachelors in engineering in relevant field or master of computer application. since you are interested in software field you should for for mca course right after completing the bachelors. generally mca couse admission has no age limit, so you can also join 3 years mca course now. or you may gor for master of technology in computer science from Indian statistical institute, where students from any of the masters course field are eligible to apply.