C42 Engineering is a boutique technology consultancy that specializes in delivering high quality technology solutions to some of the fastest growing startups both in India and in the Valley. C42 has also launched http://rubymonk.com, an education product that teaches Ruby programming product that sees 200,000 users annually. Based out of Bangalore in India, C42 Engineering was founded by former ThoughtWorks consultants Sidu Ponnappa, Niranjan Paranjape and Aakash Dharmadhikari. With a deep understanding of XP principles and practices and in-depth experience in applying lean user experience principles to iterative product development, C42 Engineering has the experience and background to deliver beautifully engineered, well tested and scalable software to quality conscious clients. The team has an excellent track record in delivering full-stack solutions in a distributed environment using technologies like Ruby, Ruby on Rails, Golang, Clojure and Javascript. C42 Engineering was acquired by Indonesian startup GO-JEK in October 2015.