Thermo Fisher Scientific Senior Front end Developer Interview Questions and Answers

I am a highly motivated and experienced professional with a strong background in the field.

• I have a Bachelor's degree in Business Administration.

• I have over 5 years of experience working as an Associate in a reputable company.

• I am skilled in data analysis, project management, and client relations.

• I have successfully led a team of 10 members to achieve project goals within tight deadlines.

• I am a quick learner and adapt

Analytics is crucial for making data-driven decisions and improving business performance.

• Analytics helps in identifying trends and patterns in data.

• It enables businesses to make informed decisions based on data insights.

• Analytics can be used to optimize processes and improve efficiency.

• Examples: Using sales analytics to identify top-performing products, using customer analytics to personalize marketing strategies.

I want to bring strong leadership skills, problem-solving abilities, and a passion for customer service to the table.

• Strong leadership skills: I have experience leading teams and making strategic decisions.

• Problem-solving abilities: I excel at finding creative solutions to challenges that arise.

• Passion for customer service: I prioritize providing excellent service and building strong relationships with customers.

To find code performance issues in production, use monitoring tools and profiling techniques.

• Use monitoring tools like New Relic, AppDynamics, or Datadog to track performance metrics and identify bottlenecks.

• Use profiling techniques like CPU profiling, memory profiling, and network profiling to pinpoint specific areas of the code that are causing performance issues.

• Analyze logs and error messages to identify patterns a...read more

Asynchronous programming is a programming paradigm that allows multiple tasks to run concurrently without blocking each other.

• Asynchronous programming is used to improve the performance of applications that require a lot of I/O operations.

• It involves the use of callbacks, promises, and async/await keywords in JavaScript.

• Asynchronous programming can be used in both front-end and back-end development.

• Examples of asynchro...read more

Program to change background color on button click in Angular

• Create a button in Angular template

• Add click event listener to the button

• Use setInterval() function to change background color after every 0.5 sec

• Use ngStyle directive to change background color dynamically

Use Angular's 'resolve' property to load component after services are loaded.

• Create a resolver service that waits for all three services to complete before resolving.

• Add the resolver service to the 'resolve' property of the component's route.

• Access the resolved data in the component using the ActivatedRoute service.

• Example: { path: 'my-component', component: MyComponent, resolve: { data: MyResolverService } }

IQueryable is for querying data from a source that implements IQueryable interface while IEnumerable is for iterating over a collection of data.

• IQueryable is used for deferred execution while IEnumerable is used for immediate execution.

• IQueryable is used for querying data from a remote data source while IEnumerable is used for querying data from an in-memory collection.

• IQueryable is more efficient for large datasets as...read more

Entity Framework is an ORM while ADO.NET is a data access technology.

• Entity Framework is easier to use and provides more abstraction than ADO.NET.

• ADO.NET is faster and more flexible than Entity Framework.

• Use Entity Framework for simple CRUD operations and ADO.NET for complex queries and performance-critical applications.