Recruiter contacted me. First round was screening by recruiter on past work and qualifications. Then I got an online proctored test through Testdome. Had to share screen and turn on web camera for an 1:30 hours online test. Test was on DSA, C++, behavioural questions, aptitude questions, some SQL, REST endpoints etc. Third round was a take home coding assignment with 1 week to finish. It was somewhat tough with 3 questions based on class design, design patterns, multi threading, templates, involved almost all concepts of C++. Fourth round was with hiring manager with a mix of technical C++ questions, tools worked on, ways of working etc. Heavy on modern C++ topics and some C++20 concepts. Ghosted after that. Tried mailing recruiter, but got a generic reply that they will get back.