I will mainly presenting my experience of UX/UI in big data analytics in last 10 years in Guavus company (Big data analytics firms). Key points: 1. Big data – What, Who, Why 2. Our real examples of Big data applications 3. Our UX/UI learning in last10 Years in Big data space 4. How to Simplify – Big data problems 5. Key skills you need to enter in Big data space as UX/UI 6. Future in Big data analytics