I only took part in very preliminary coding certification task from code signal. Codesignal arranges a certification exam requested by a particular company. There are four programming questions of moderate difficulty i will say. Depending on the acceptance of the solution they rank out of 850 and a report is generated based on the time and performance of the solutions. The report is sent to the requesting company.
Interview questions [1]
Question 1
Q. 3 Basic algorithm implementations
Q. 1 optimized code for substring with duplicate letters type code.
First a HR call - goes into project details, what you're looking for, etc
Got connected to a Hiring Manager for a project deep dive + TPS round within the hour. TPS question not too difficult - not leetcode.
live coding session, create a md to html translator. It was all live with unique requirements making it more difficult than I expected using regex. The interviewer was not personable and it was a very uncomfortable experience
I made it to the technical screen and didn't proceed further. Recruiter call was the usual experience dive, comp discussion, and why you are looking for a job. The technical screen was a string parsing question.
Interview questions [1]
Question 1
Technical: String parsing. Be comfortable with regex