I work independently for some friends in Europe and USA. You can check link: https://itunes.apple.com/vn/artist/i.m.d.-publicacion-c.a./id431876194
Beside, I also make more iPad enterprise for Alstom company (the big company: http://www.alstom.com/)
On company Synova, I had worked with big project about finance and bank (mobile payment: http://www.mobexo.com), from here I have more experience to work with more big project.
On Systum company, I am working on big product e-commerce, finance, CRM,...