The guru of Services Drafts Carlos Roberto Castro Bussines Data Analyst I am new to Guru and to the world of freelance . As such I don’t really have examples to include in my portofolio. My experience comes from applications implemented as a commercial analyst in the electrical markets sector. My professional experience and education have provided me with strong data analysis and problem solving skill.I am skilled in Power BI , Power Query, Power Pivot as bussines intelligence tools. I am used in write complex dax formulas to get significant data information. And I have knowles in R as complement of BI tools.