Mistral Solutions Embedded Engineer Interview Questions
& Process

The interview process involves an aptitude test in the first round, which includes negative marking for certain questions. The second round is a 45-minute programming test where you need to solve 3 programming problems. Following that, there's a technical interview, and the final round is an HR interview.

The interview began with Round 1, an aptitude and technical MCQ round. It had 10 aptitude questions for 15 minutes and 16 domain-specific questions (software or hardware preference) for 45 minutes. Aptitude covered Time and Work, Number Series, Time Speed and Distance. Software MCQs included C Programming, Pointers, Functions, Recursion, and output-based questions. Notably, four software questions had negative marking. This round also included two coding questions: Max number of 1s in a matrix and merging two linked lists. Other technical topics like Shift Operators, Bitwise Operations, Flowcharts, Malloc, and Hexadecimal problems were also discussed. Round 2 involved 6 questions: 3 output-based and 3 coding problems, where candidates could use C, C++, Java, or Python. The coding problems were about counting consecutive words with specific letters and checking number equality without operators. Round 3 was a written coding round where candidates wrote code on paper for two problems: password validation (uppercase, special char, digit, no consecutive repeats) and counting words with 'e' and 'd'. Round 4 required solving coding problems in C, with internet access allowed. Problems included counting file types and folder structures, finding lines in files, and counting functions/methods. Round 5 was a technical interview focusing on Java OOPs concepts, with four paper-based coding problems: substring check, Bubble Sort, 2D array sort, and string reversal via recursion. Finally, Round 5 was an HR interview asking general questions.

First there was an aptitude test with quantitative software and hardware questions. Then, two technical rounds. After that, a written HR assessment, followed by a face-to-face technical round. It all wrapped up with a final HR round.