There hasn’t been a better time than now to find a well-paying job in the IT industry and having top skills like Talend on your resume can offer a serious boost to your career and earning potential.
In a world dominated by big data and cloud, ETL tools like Talend help businesses extract their data from large, complex, and disparate sources and convert them into trusted, actionable business intelligence and insights to perform their day-to-day and make faster decisions.
According to enlyft, 11,929 companies in the US and across the world use Talend —some of the biggest names include the US government’s Federal Emergency Management Agency (FEMA), AstraZeneca, Lenovo, Domino's, and AB InBev, among others.
It’s not surprising then that the knowledge and understanding of Talend is one of the key skills to have for in-demand job roles like data architect, data analyst, data engineer, ETL developer, to name a few. Whether you are a fresher or an experienced professional, the chances of getting hired based on your Talend skillset are significantly high these days.
If you’re wondering what Talend questions you might encounter at an interview or how a Talend-based hiring process goes, we’ve got you covered.
What Is Talend?
Talend Open Studio is an open-source, ETL tool that connects to data warehouses, transforms data and customises workflow. Armed with these tools, businesses can transform data into business intelligence. Its automation techniques allow faster development and deployment. Powered by a tool like Talend, businesses can focus on growth using data.
Talend Recruitment Process
The recruitment process in hiring a Talend specialist includes a written test, aptitude test, objective test, technical rounds and HR rounds. The object of each round will be to assess the different skills and abilities to perform in teams and under pressure.
The written test is designed to test your knowledge of the Talend Open Studio tool. It will also pose questions at the application level to test your adaptability.
The aptitude test assesses your general understanding of the field you wish to enter. It is a holistic test that assesses both your logic and reasoning skills as well as specific skills related to the industry.
The objective test is the tricky part where you have to find the right answer among other seemingly right answers. It tests your skills as well as speed.
The technical rounds are where you will have to perform tasks regarding the Talend software. Your ability to work in this particular field ultimately comes down to this part of the test. Besides working with the software, your ability to work in teams will also be assessed.
The HR rounds are where you will be measured overall as well as a technical asset to the company.
Once you clear these, with the help of our curated list of sure-shot Talend interview questions, you will be negotiating a competitive salary package in no time. Let's get going!
Talend Interview Questions and Answers
1. What are some advantages of using Talend?
- Talend enables businesses to respond to business requests faster without hand coding
- It gives businesses access to the latest data integration features to stay ahead in the race
- It offers the advantage of real-time data integration for faster and remote deployment
2. How will you define “component” in Talend Open Studio?
Component refers to a functional unit of Talend, which can be used to execute a single operation. They are used with the simple drag and drop functionality. The component may be a snippet of Java code which is generated as a part of a Job.
3. How can you access global and context variable?
Click Ctrl + space key, to access both global and context variable.
4. What is MDM in Talend Open Studio?
MDM stands for Master Data Management. With the help of MDM, an organisation can build and manage a consistent, single and accurate view of the enterprise data. MDM increases business value by improving operational efficiency, planning and regulatory compliance, and marketing effectiveness.
5. How can a Talend Job be executed remotely?
A Talent job can be executed remotely using the command line, for which you need to export the job along with its dependencies. After that, you can access its instruction files from the terminal.
6. What is tMap?
tMap is an advanced component which is integrated as a plugin to Talend Studio. This component can transform and route data from single or multiple sources to single or multiple destinations.
7. What is meant by Routines in Talend?
Routines are complicated Java functions, which are used to factorise code. It helps to recover Job capacities and optimize data procedure.
8. What is the use of Expression Editor in Talend?
Expression Editor in Talend enables us to view and edit expressions like output, input, and constraint statements. This editor includes a dedicated view of writing any functions or transformation. The expression needed for the data transformation can be written easily using the expression editor.
9. What is the process of scheduling the Job in Talend?
First, export the Job as a separate program. Then you should use the OS’ native scheduling tools like Windows Task Scheduler, Cron, etc. to schedule your tasks.
10. Is it possible to change the code generated directly in Talend?
No, we cannot change the generated code directly in Talend open studio.
Talend MCQ interview questions
Here are some of the top multiple choice questions to practice for your Talend job interview.
1. From which tab in component view would you specify the component label in Talend
ii) Advanced settings
iii) Basic settings
2. tMap offers following join model in Talend tool
i) Left Outer Join
ii) Right Outer Join
ii) Inner Join
iv) Full Outer Join
3. How can you access parameters in the Global Map in Talend ETL tool?
i) globalMap.put(“Key”, Object)
ii) globalMap.get(“Key”, Object)
4. What is the use of a tReplicate component?
i) To copy the input row to an output row without processing it
ii) To duplicate a sub job
iii) To duplicate the configuration of an existing component
iv) To send duplicates of an output row to multiple target components
5. How can you see the configuration of an error message for a component in Talend studio?
i) From the errors view
ii) Right-click the component and then click show problem
iii) Hover the mouse over error symbol in the design workspace
iv) From the problems view
6. How do you make sure that a subjob completes before a second subjob runs in Talend?
i) Using RunIf trigger
ii) Using the main connection
iii) Using onComponentOk or OnComponentError trigger
iv) Using onSubJobOk or onSubJobError trigger
7. How do you run a job in Talend Open Studio?
i) Click the Run button in the Run view
ii) Click the Run button in the Job view
iii) Click the Run button in the File Menu
iv) Click the Start button in the Run view
8. From which tab in component view can you specify the component label in Talend?
ii) Advanced settings
iii) Basic settings
9. Which components given below can be used to implement lookup in Talend?
10. Choose which of the below options in design workspace suggests an error with a Talend component
i) A red ‘X’
ii) A red exclamation point
iii) A green ‘ I’
iv) A yellow exclamation point
How to Prepare for a Talend Interview?
It goes without saying that a working knowledge of Talend is necessary to ace your interview if you’re interviewing for an experienced role. For freshers, learning the basics of Talend is the first step. There are many online resources that will equip you with the fundamentals, however, enrolling in a reputed certification program will give you more confidence.
It is also wise to stay abreast with the latest developments and applications of Talend in the industry and follow any updates or changes.
Finally, you should prepare for the various rounds of the interview tests by practising the questions and MCQs we have discussed as well as others that you might find through other resources. The key is to remain as prepared as possible.
Talend Careers Opportunities and Salary Package
Talend has great future scope. There is a high demand for Talend developers who can manage, store, transform data and represent it accurately and efficiently.
Some of the popular job titles pertaining to Talend are:
- Talend Admin
- Talend Developer
- Talend ETL Developer
The average salary for a Talend ETL developer in the US is around $117,000 per year according to talent.
Frequently Asked Questions
1. What is Talend?
Talend is an open source software for data integration and management. It helps users update, convert, and merge data to generate business insights.
2. What are the prerequisites for a Talend certification?
There are no prerequisites. However, the basic understanding of data warehousing is a plus.
3. Who should be looking for a career as a Talend developer?
Anyone ranging from a software engineer, business analyst, solution and data architect, or data analyst, to data warehousing professionals would benefit from having Talend skills.
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