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Sai is doing a great job of managing the B2G OS documentation, leading a community of volunteers to keep the docs up to date. Fantastic work.
I'm endorsing karthik Karra for his valuable contributions at Firefox OS and filing the bugs related to new products at marketplace.Thanks !
Sai is contributing to our IoT efforts and also Firefox OS. He's been contributing also with visual design efforts, designing a logo for the port of Firefox OS to Raspberry Pi.
Karthik is an enthusiastic contributor towards Firefox OS and MDN . It's my Pleasure to Vouch him :)