"I really liked working with Joao. His work reflect great knowledge and quality ."

"João Santos’ work on the SurveyMonkey Multilingual Survey project necessitated his very strong mathematical skills. He has great agility on the computer and superb skills for quantifying and analyzing data. João is an excellent communicator, has excellent English writing and grammar proficiencies. We are exceptionally pleased with his services and the deliverables. He exceeded expectations in every aspect of the project."

"João is the best!! His work is top-class. I can't recommend him highly enough. He is super-skilled and really easy to work with. I found him kind, super enthusiastic and really helpful throughout the whole project."

"I am speechless, he did a great job in a very short period of time."

"He did an excellent job and under a very short timeline. The end results were very easy to understand and he provided step by step guidelines to help interpret the findings. Would definitely recommend him! Very professional."

"Joao not only knows his subjects exceptionally well, he's an excellent teacher and completes high quality work within the agreed upon timeframe. He went above and beyond by providing background reading so I could understand my analyses better, and is willing to stick with the project until it's done the right way. His help has significantly improved my confidence in my thesis, and if I need assistance for this course again I will be coming back to him."

"Very efficient and competent. The contract was completed in the first 24h and the work was conducted in a very professional manner. I definitely recommend João's work and will look him up again in the future for statistical analysis."