People seemed nice and professional. I sadly had to withdraw from the process due to Hackerrank being used in the screening. For the potential candidates - the use of Hackerrank may be a red flag about a culture, diversity and equality issue. Unlike leetcode or similar software, Hackerrank is prejudicial claiming engineers can only be as good as their mathematical level. I believe engineers are as good as their products, working relationships, achievements, innovation, designs, solutions, values and a team benefits of different backgrounds, different levels of skill and strength. Many of us in the industry feel it is biased/unethical software for interview processes and strongly disagree with it's use in the hiring process (including some of Hackerranks own employees). Its fails to meet the standard of similar and competing software in terms of technical testing and problem solving, and as a learning tool. Their product is very low standard on many levels and crashes frequently so ironically the products failings contradicts their whole argument about mathematicians making great engineers... It does however serve a clear and single purpose of excluding candidates from different backgrounds and/or disabilities which i suspect is where it gained it's support. So i feel the responsible choice is to decline to use it - which unfortunately withdrew me as a candidate for this company. I thanked them for their time, explained i wasn't comfortable with the use of Hackerrank but was open to alternatives. When that was declined, i decided to err on the side of caution of it indicating a cultural issue in that area and not to proceed further.