My profile

I am a web-engineer.
I work in Tokyo and studying English.

Our company is develops and sells a web-conferenceing system. 

I'm a leader of a team of developers group. I need to change for my company's globalization (As my company globalizes, I also need to change).
Also I am looking forward to speaking with various people.

Feel free to talk to me!

Good job!

"I work in Tokyo and studying English." - work and study should be in the same form, this is true whenever you list actions.  You could also say "I am working in Tokyo and studying English"

"Our company is develops and sells a web-conferencing system." - You could also say "Our company is developing and selling a web-conferencing system"

"I'm a leader of a team of developers group" - You can use group, but team is a much better word in this case, team implies working together.  I'm a developer myself.  Also, you could say "I'm a leader of a development team[group]"

"I need to change for my company's globalization" - This sentence is perfect grammatically, but I think "As my company globalizes, I also need to change" sounds a bit more natural.

Good luck with your job and studying English!