Quality Assurance Engineer - Data

Tsb; Wellington; On-site; NZD 70,000 - 110,000; Full time

Job summary

TSB is seeking an experienced Quality Assurance specialist with a strong focus on data testing. You will validate data transformations, reconciliations and mappings across platforms, and support ETL/ELT testing to ensure data quality throughout the pipeline.

You will write complex SQL, develop Python validation scripts, and collaborate with data engineers, analysts, and product owners to uphold quality standards. Familiarity with Databricks, Azure Data Factory, Power BI and Tableau is valued.

Qualifications

• 3+ years' experience in Quality Assurance, Test Analysis, or Test Automation roles.
• Strong experience in data testing, or data warehouse/data platform testing.
• Hands-on data testing including ETL/ELT testing, validation of data transformations, reconciliations, and source-to-target mappings.
• Strong SQL skills, with the ability to write complex queries for validation, analysis, and troubleshooting.
• Experience with Databricks, Azure Data Factory, and Microsoft Azure data services.
• Working knowledge of Python for data testing, automation, or scripting.
• Exposure to Power BI and Tableau.

Responsibilities

• Validating data transformations, reconciliations, and mappings across data platforms.
• Performing testing and quality assurance activities for data warehouses, data lakes, and modern data platforms.
• Writing and executing complex SQL queries to validate, analyse, and troubleshoot data issues.
• Supporting ETL/ELT testing and ensuring data quality throughout the pipeline lifecycle.
• Developing and maintaining test automation and data validation scripts using Python where appropriate.
• Working with data engineers, analysts, developers, product owners, and business stakeholders to ensure data solutions meet quality expectations.
• Using Azure DevOps to manage testing activities, track work items, and contribute to delivery pipelines.
• Testing and validating data from relational database sources and reporting platforms.
• Contributing to the continuous improvement of testing practices, data quality controls, and governance standards.

Skills

SQL

Data testing

ETL testing

Python

Azure DevOps

Databricks

Azure Data Factory

Power BI

Tableau

Azure Data Lake

Microsoft Azure Storage Explorer

Tools

Databricks

Azure Data Factory

Azure Data Lake

Azure DevOps

Power BI

Tableau

Microsoft Azure Storage Explorer

Job description

You're an experienced technical tester with a strong background in data-focused testing and quality assurance. You enjoy getting into the detail, understanding how data flows through systems, and making sure it's accurate, reliable and fit for purpose. You're comfortable working across technical and business teams, asking the right questions, and using your analytical skills to identify issues and drive quality outcomes.

In this role, you can expect to be:

• Validating data transformations, reconciliations, and mappings across data platforms.
• Performing testing and quality assurance activities for data warehouses, data lakes, and modern data platforms.
• Writing and executing complex SQL queries to validate, analyse, and troubleshoot data issues.
• Supporting ETL/ELT testing and ensuring data quality throughout the pipeline lifecycle.
• Developing and maintaining test automation and data validation scripts using Python where appropriate.
• Working with data engineers, analysts, developers, product owners, and business stakeholders to ensure data solutions meet quality expectations.
• Using Azure DevOps to manage testing activities, track work items, and contribute to delivery pipelines.
• Testing and validating data from relational database sources and reporting platforms.
• Contributing to the continuous improvement of testing practices, data quality controls, and governance standards.

We are looking for candidates who have:

• 3+ years' experience in Quality Assurance, Test Analysis, or Test Automation roles.
• Strong experience in data testing, or data warehouse/data platform testing.
• Hands‑on data testing experience including ETL/ELT testing, validation of data transformations, reconciliations, and source‑to‑target mappings.
• Strong SQL skills, with the ability to write complex queries for validation, analysis, and troubleshooting.
• Experience with Databricks, Azure Data Factory, and Microsoft Azure data services.
• Experience working with Microsoft tools such as Azure Data Lake, Azure DevOps, and Microsoft Azure Storage Explorer.
• Working knowledge of Python for data testing, automation, or scripting.
• Exposure to data visualisation and reporting tools such as Power BI and Tableau.

Why join us?

• A chance to lead and influence quality across key platforms
• Work with modern tools and automation practices
• A supportive, collaborative team that values continuous improvement
• A meaningful role with real impact

What’s in it for me?

At TSB, we’re small enough to really care about our customers but big enough to have great rates, innovative products, and digital solutions.

We are looking for people to help us achieve our goal of being the easiest bank to deal with. We aim to create remarkable experiences for our people, who in turn create remarkable experiences for our customers. By working with us, you’ll be a part of a profit for purpose organisation.

We’re 100% owned by Toi Foundation, a philanthropic trust, and our annual dividends contribute to Toi’s transformational impact in our community.

We believe that we all bring something unique to our workplace and when we are encouraged to be ourselves, TSB is stronger for it. That’s why we’re committed to supporting your wellbeing, creating space for you to be your best self, both in and out of work, and enabling you to make a meaningful difference in our communities.

If you are ready to get stuck in as part of a collaborative team where you’re supported to be your best self….

Closing date for applications is 5.00pm on Sunday 1st November 2026