Google Software Engineer Interview Questions and Answers for Experienced

Interview preparation tips for other job seekers - Good

Interview preparation tips for other job seekers - Practice is the only silver bullet to crack any interview!
Do coding of problem on notepad. Refer DS, ALGO related problem from GeeksOfGeeks site.

And 1 more thing coding is an art and please do not mug up the code, just try to understand the tricks, logic and solution and use those tricks and solution to solve any coding problem.

Do practice, Do practice and Do practice....nothing else

Interview preparation tips for other job seekers - Be good at algorithm, they can judge very quickly the efficiency level.

Round: Technical Interview
Experience: On-site interview (5 hours).

4 back-to-back 45-minute coding interviews, followed by a design interview, with a lunch break with a Googler in the middle.

The first coding interview was a set of (surprisingly) trivial (no algorithms needed) incremental coding questions.

The two next coding interviews were problems straight from the "Cracking the coding interview" book. Even though I divulged that I'd solved pretty much exactly the same problem before, they didn't give me an alternative problem and I quickly coded up a general and optimal solution for the problems. Follow-up in-depth questions were minimal and not hard.

The last coding question was a pure algorithm question related to search trees/tries. No coding required, spent the whole time reasoning about the most effective algorithm. This was a bit of a brain twister.

The design question was related to high-level system design (not OO design) for storage and search in geographic data. Focus was effective search as well as scalability both in traffic and data volumes.

Tips: Read "Cracking the coding interview" or other similar literature. Solve all the problems and you should be good to go. If you solve a bunch of problems at HackerRank (or similar) as well, you'll have the added bonus of training on how to generalize the algorithms.