I think it depends on who you want to hire. Triplebyte does an excellent job of finding people who would otherwise fall through the cracks. For example, as someone without a traditional software engineering background (physics degree from a good state school and work experience in rocket science), I didn't know many people in the programming industry who could provide referals, and my direct job applications weren't getting through the resume screens.
Triplebyte has been really helpful for me there, and got me interviews with companies that care more about problem solving ability and are happy to hire someone like me who will learn on the job.
Someone who designed the IR for V8 would no doubt have no trouble directly getting interviews with whatever companies they want, and people look you who screen applicants based on experience shouldn't have much trouble finding such applicants. General problem-solving / coding ability on the other hand is not quantifiable on an ordinary resume / linkedin, and Triplebyte's system provides a good screen (within the limitations of a few hours of testing) to quantify that.
Triplebyte has been really helpful for me there, and got me interviews with companies that care more about problem solving ability and are happy to hire someone like me who will learn on the job.
Someone who designed the IR for V8 would no doubt have no trouble directly getting interviews with whatever companies they want, and people look you who screen applicants based on experience shouldn't have much trouble finding such applicants. General problem-solving / coding ability on the other hand is not quantifiable on an ordinary resume / linkedin, and Triplebyte's system provides a good screen (within the limitations of a few hours of testing) to quantify that.