ETL Tester , Python , SQL

An ETL Tester at Talworx is primarily responsible for ensuring the quality and efficiency of data processing by developing and executing test plans, creating test cases, and collaborating with development, DBAs, and business teams to remediate defects. The role involves extensive analysis of system requirements and participation in product design meetings, allowing testers to provide valuable input on testing tools and approaches.

To succeed in the ETL Tester role at Talworx, candidates should possess strong SQL skills, proficiency in Python scripting, and a solid understanding of ETL processes. Additionally, a financial or banking background can be beneficial as it helps in understanding the nuances of data relevant to this sector. Familiarity with CI/CD pipelines for automation and robust database testing experience are also crucial.

The ETL Tester at Talworx works alongside various departments including development and business teams. This collaboration is vital to effectively set up test environments, create comprehensive testing strategies, and address any defects that arise during testing. Regular interactions in design meetings also ensure that quality assurance is integrated throughout the development process.

Utilizing testing tools is significant for an ETL Tester at Talworx as it helps in planning, executing, and tracking quality assurance artifacts systematically. These tools facilitate automation, enhance accuracy, and improve overall efficiency in identifying data inconsistencies, thus ensuring the reliability of applications.

Talworx is seeking ETL Testers with 5 to 7 years of experience. This experience should ideally encompass a robust background in ETL testing, database testing, and relevant scripting knowledge in Python to ensure that candidates can effectively contribute to the team's objectives and quality assurance rigor.

When answering this question, highlight specific projects where you performed ETL testing, tools you used, and outcomes achieved. Emphasize your methodologies in creating test cases, executing tests, and collaborating with stakeholders to resolve issues.

Describe your systematic approach to writing test cases, including understanding requirements, defining expected outcomes, and utilizing best practices. Either outline your template for test cases or discuss any specific tools you utilize for this process.

Discuss how you proactively communicate with developers, DBAs, and business analysts to clarify requirements and report findings. Also, mention how effective communication can prevent misunderstandings and enhance the overall testing process.

Share a specific example of a challenging defect, explaining how you discovered it, your approach to documenting it, and collaborating with the team to resolve it. This showcases your problem-solving capabilities and attention to detail.

List the various tools you've used and discuss your level of expertise with each. Mention how these tools have aided in automating tests and improving testing efficiency, which is essential for ETL processes.

Talk about your strategies for validating data, such as cross-checking sources, performing data profiling, and conducting regression tests. Your goal should be to reassure them of your commitment to data quality in ETL processes.

Share insights into your best practices for regression testing using examples, perhaps discussing how you prioritize test cases, record results, and utilize automated testing in your workflow.

Employ examples from your past where you managed time effectively, prioritized tasks, and effectively communicated with your team to meet deadlines, emphasizing flexibility and adaptability.

Frame your response by discussing your experience with CI/CD processes, tools you’ve used, and how this familiarity has allowed you to contribute towards automation in ETL testing effectively.

Articulate your approach to thoroughly analyzing system requirements and design documents, how you extract relevant testing criteria, and ensure that your test cases cover all necessary conditions related to ETL processes.