Eurofins Scientific Senior QA Engineer Interview Questions and Answers for Experienced

Q1. How to reverse two numbers without using temp variable
Ans. 
To reverse two numbers without using a temp variable, use bitwise XOR operation.
• Use bitwise XOR operation to swap two numbers without using a temp variable.

• Example: a = 5, b = 7. a = a XOR b, b = a XOR b, a = a XOR b. After this, a = 7, b = 5.
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Q1. Why do you want to join Thermo Fisher
Ans. 
I want to join Thermo Fisher because of their reputation for innovation and impact in the scientific community.
• Thermo Fisher is a leader in the scientific research and healthcare industry

• I am impressed by their commitment to innovation and cutting-edge technology

• I believe working at Thermo Fisher will provide me with opportunities for professional growth and development
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Q1. Technical questions related to core engg. field.
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Q1. Typical HR related questions such as past company experience, any issues with past employers, work environment & policies of the organization etc...
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Q1. Production piping regarding
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Q2. Hydro and erection and commissioning.
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Q1. Self Introduction, explain about your projects
Ans. 
I am a software engineer with experience in developing web applications using Java, Spring Boot, and Angular.
• Developed a web application for a retail company using Java and Spring Boot

• Implemented RESTful APIs for communication between frontend and backend

• Designed and developed user interfaces using Angular framework
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Q2. Rotate an array n times with a O(1) time complexity
Ans. 
Use modular arithmetic to efficiently rotate array n times.
• Use modular arithmetic to calculate the effective number of rotations (n % array length)

• Reverse the entire array

• Reverse the first n elements

• Reverse the remaining elements
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Q1. Self Introduction
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Q2. What do you know about the company
Ans. 
The company is a leading software development firm specializing in creating innovative solutions for various industries.
• Specializes in creating innovative software solutions

• Works with clients from various industries

• Known for high-quality and reliable products

• Has a strong team of software engineers and developers
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Q1. Selenium and java .scenario based questions.
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Q1. Explain frame work,java code for real time scenatios
Ans. 
A framework in Java is a reusable set of libraries, tools, and guidelines for developing software applications.
• Frameworks provide structure and guidelines for organizing code and implementing common functionalities.

• Java code in a framework typically includes classes, interfaces, methods, and annotations.

• Real-time scenarios in QA testing may involve automated testing, data validation, and performance testing.

• Example: Us...read more
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Q2. Reverse of a string,find digits in string
Ans. 
Reverse a string and find digits in the string.
• Use a loop to iterate through the characters of the string and build the reversed string.

• Use a regular expression to find digits in the string.

• Return the reversed string and the digits found in the string.
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Q3. Contributions in framework development
Ans. 
I have contributed to the development of automation frameworks by designing reusable components and implementing best practices.
• Designed and implemented custom test automation frameworks using tools like Selenium and Appium

• Created reusable functions and libraries to improve code reusability and maintainability

• Integrated automation scripts with continuous integration tools like Jenkins for automated testing

• Contributed t...read more
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Q1. Tell me about you experience
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Q2. Where you want to develop your skills
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4 interviewers. One is technical (QA manager), one is HR manager and the other two are domain experts.