EPAM Systems MERN Stack Developer interview questions

It was a drive. First round we had 20 MCQs to be solved within 30 mins. The MCQs consisted of typescript and javascript questions mainly like predicting the output, data types/ keywords in typescript, event loop output prediction questions. Followed by a technical round. Which also consisted of javascript and typescript based questions mainly. Also 2 problem solving questions.

The interview process typically starts with a screening round focusing on JavaScript, React.js, and HTML/CSS fundamentals, followed by problem-solving using coding platforms. The next round assesses backend knowledge, including Node.js, Express, and performance optimization techniques. Candidates may be asked to build APIs, handle authentication, or explain middleware. Frontend rounds often involve React hooks, Redux patterns, and responsive design. Database knowledge is evaluated through schema design and query writing (MySQL, MongoDB). Final rounds focus on system design, debugging, and past project discussions. Communication skills, code clarity, and real-world problem-solving are key factors throughout the process.