What does an etl tester do?

An ETL tester is responsible for validating data sources, extracting data applications of transformation logic, and uploading data in target tables. They are responsible for designing, testing, and troubleshooting the company's data storage system before it goes live. They must have strong technical capabilities and good knowledge of the coding languages commonly used in ETL development, such as Java, SQL, XML. Familiarity with data warehouse architecture techniques like ODS, DM, EDW, M, and ROLAP is also needed. Employers or clients often prefer ETL developers with extensive experience in solving complex technical problems and troubleshooting.
Etl tester responsibilities
Here are examples of responsibilities from real etl tester resumes:
- Design and develop UNIX commands as part of the ETL process, automate the process of loading, pulling the data.
- Manage departmental inventory and troubleshoot testing, reporting and inventory issues.
- Automate the functionality using QTP.
- Test the target data in Teradata database.
- Used JIRA to track and report on defects.
- Generate the report from COGNOS report tool and compare with EDW database.
- Execute SQL queries to perform backend database testing and verify/modify user data.
- Perform technical testing and analysis using SQL and automate testing tool, QTP.
- Involve with extraction routines to verify all the required data load into target systems.
- Used JIRA for storing, maintaining the test repository, bug tracking and reporting.
- Execute the test scripts against Teradata source and validate the rules according to mapping documentation.
- Work in multiple source data extraction and data transition from existing production system to test environment.
- Participate in documenting defects, resolve defects and coordinate with UAT team to get sign-off for the application/project.
- Impart and organize training to newcomers in the team regarding different technologies like SQL, PL/SQL and different processes.
- Involve in developing selenium automation framework using TestNG.
Etl tester skills and personality traits
We calculated that 7% of ETL Testers are proficient in Test Cases, Test Plan, and Unix.
We break down the percentage of ETL Testers that have these skills listed on their resume here:
- Test Cases, 7%
Analyzed business requirements, use cases and technical specifications for scripting comprehensive test cases.
- Test Plan, 6%
Prepare test Plan and testing strategies documents for data warehousing application including manual test plans/scenarios/relevant data using standard IT standards.
- Unix, 4%
Used PMCMD command to start, stop and ping server from UNIX and created UNIX Shell scripts to automate the process.
- SQL Server, 4%
Experience in Data Migration, Database Transferring and related objects in SQL Server from one server into other Remote servers.
- Test Scripts, 4%
Prepared and executed automated test scripts as per the business requirements and Requirements specifications Document.
- QA, 4%
Documented Defects found during test on the Quality center and communicated, recorded problems to the responsible QA or development personnel.
Most etl testers use their skills in "test cases," "test plan," and "unix" to do their jobs. You can find more detail on essential etl tester responsibilities here:
The three companies that hire the most etl testers are:
- Deloitte100 etl testers jobs
- Cognizant5 etl testers jobs
- Capgemini4 etl testers jobs
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Etl tester vs. Senior quality analyst
A senior quality assurance analyst specializes in inspecting and assessing the quality of software and systems in a company, ensuring efficiency and smooth workflow. Their responsibilities include developing specific test structures, coordinating with different departments to gather data, troubleshooting, and studying client complaints to prevent issues from happening again. They may also perform regular maintenance checks, recommending solutions as needed. Furthermore, as a senior quality assurance analyst, it is essential to lead the quality assurance efforts on systems, all while serving as a mentor and role model to junior analysts.
These skill sets are where the common ground ends though. The responsibilities of an etl tester are more likely to require skills like "data warehouse," "informatica etl," "data quality," and "extraction." On the other hand, a job as a senior quality analyst requires skills like "patients," "selenium web," "scrum," and "iso." As you can see, what employees do in each career varies considerably.
Senior quality analysts earn the highest salaries when working in the finance industry, with an average yearly salary of $93,397. On the other hand, etl testers are paid more in the finance industry with an average salary of $86,978.The education levels that senior quality analysts earn slightly differ from etl testers. In particular, senior quality analysts are 5.7% less likely to graduate with a Master's Degree than an etl tester. Additionally, they're 0.4% more likely to earn a Doctoral Degree.Etl tester vs. Senior quality assurance analyst
Senior quality assurance analysts are responsible for developing and implementing quality assurance standards within an organization. They collect and analyze data to reinforce proposed projects, systems requirements, and business cases. These will include writing scripts and test plans to monitor errors and fixes in product and software development, operational systems, and information systems. Besides, they are also responsible for several tasks, including preparing reports and recommendations, communicating with suppliers and vendors in assessing applications, and conducting internal audits.
Each career also uses different skills, according to real etl tester resumes. While etl tester responsibilities can utilize skills like "test cases," "test plan," "informatica etl," and "data quality," senior quality assurance analysts use skills like "manual test cases," "selenium web," "scrum," and "xml."
On average, senior quality assurance analysts earn a higher salary than etl testers. Some industries support higher salaries in each profession. Interestingly enough, senior quality assurance analysts earn the most pay in the finance industry with an average salary of $99,710. Whereas etl testers have higher pay in the finance industry, with an average salary of $86,978.senior quality assurance analysts earn lower levels of education than etl testers in general. They're 6.4% less likely to graduate with a Master's Degree and 0.4% more likely to earn a Doctoral Degree.Etl tester vs. Quality assurance consultant
A quality assurance consultant specializes in recommending and optimizing quality-control procedures ensuring efficiency and smooth workflow. They typically conduct research and analysis to identify the strengths and weaknesses of current quality control operations, implement solutions on problem areas, review policies and regulations, and coordinate with other staff to gather necessary data, analyzing them to find new opportunities for improvement. Furthermore, as a quality assurance consultant, it is essential to recommend solutions in adherence to the company's policies and regulations, including its mission and vision.
There are many key differences between these two careers, including some of the skills required to perform responsibilities within each role. For example, an etl tester is likely to be skilled in "test cases," "test plan," "data warehouse," and "informatica etl," while a typical quality assurance consultant is skilled in "manual test cases," "selenium webdriver," "scrum," and "home health."
Quality assurance consultants earn the highest salary when working in the finance industry, where they receive an average salary of $98,723. Comparatively, etl testers have the highest earning potential in the finance industry, with an average salary of $86,978.quality assurance consultants typically earn lower educational levels compared to etl testers. Specifically, they're 7.4% less likely to graduate with a Master's Degree, and 1.2% less likely to earn a Doctoral Degree.Etl tester vs. Quality assurance engineer
A Quality Assurance Engineer's role is to oversee the overall production and ensure that the product is cost-efficient and aligns with the company's standards. The responsibility mainly revolves around conducting activities that examine and scrutinize the condition of a product or service to identify issues and come up with possible solutions to resolve the issue or attain stronger customer satisfaction. Furthermore, the Quality Assurance Engineer must also ensure that the product adheres to the government regulations and market guidelines.
Even though a few skill sets overlap between etl testers and quality assurance engineers, there are some differences that are important to note. For one, an etl tester might have more use for skills like "test cases," "test plan," "qa," and "data warehouse." Meanwhile, some responsibilities of quality assurance engineers require skills like "python," "api," "scrum," and "c++. "
The technology industry tends to pay the highest salaries for quality assurance engineers, with average annual pay of $100,740. Comparatively, the highest etl tester annual salary comes from the finance industry.The average resume of quality assurance engineers showed that they earn lower levels of education compared to etl testers. So much so that theyacirc;euro;trade;re 11.1% less likely to earn a Master's Degree and more likely to earn a Doctoral Degree by 0.4%.Types of etl tester
Updated January 8, 2025











