Contact us at recruiting@radix-trading.com for more information. Quantitative Researcher. While the focus is on identifying trading opportunities, you can add even more value with strong quantitative skills and some coding proficiency to accelerate the innovation process and help others leverage your work. For inquiries or requests that require a more personal response, we will make every attempt to respond within 48 working hours. Or, if you prefer to contact us by phone or fax, please use our Office Locator to find a Deloitte office near you. Fields marked with an asterisk (*) are required. Whitepages offers the top free reverse phone number lookup tool online, established in 1997. With comprehensive contact information for over 275 million people and 25 million businesses as well as phone scam and fraud detection, we're not the old white pages phone book or directory.