I Want To Be Symbian Software Developer I Hava Good Programming Skils In C++,c & Java.?

Hi
I m very intrested in programming and I think i have good Programming skill in C,C++ & java.
And i m very intrested in symbian softwares so i want to do some contribution in symbian Softwares
But I dont have any idea about symbian programming methology…….
1)Which language is used for Developing symbian s/w
OR which s/w (compiler/ interpreater or …..) is used for symbian s/w programs
2)Is this career option is good or not.
so frendz plz help me how I will be symbian Programmer.
plz help me in detaile