Analytical Chemist: Qa/Qc & Continuous Improvement

Watercare Services Limited; Auckland; On-site; NZD 65,000 - 95,000; Full time

Job summary

Watercare Services Limited is seeking a Software Tester to validate fintech platforms in Auckland. You will ensure reliability, security and production readiness across card issuance, wallet, and API integrations.

Responsibilities include planning and executing functional, integration, regression and UAT tests on web, mobile and backend systems; validating database integrity and transaction flows; and supporting automation using Selenium, Playwright, Cypress and Postman.

Qualifications

• Formal testing experience across functional, integration, system, regression and UAT.
• Knowledge of SQL and relational databases.
• Experience testing REST APIs and system integrations.
• Understanding of software development and testing methodologies.
• Ability to prepare structured test cases and test reports.
• Awareness of security principles and PCI DSS considerations.

Responsibilities

• Prepare test plans, test scenarios, test cases and test data based on requirements.
• Perform functional, integration, system, regression and UAT testing.
• Test web, mobile and backend applications.
• Identify, document and track defects through to resolution.
• Retest corrected defects and conduct regression testing before releases.
• Verify delivered software meets requirements.

Skills

Software testing

QA methodologies

SQL

REST APIs testing

Analytical skills

Documentation

Security principles

Problem solving

Education

Bachelor's degree in Computer Science / Software Engineering / IT

Tools

Selenium

Playwright

Cypress

Postman

JMeter

Job description

The Software Tester is responsible for testing AntBank's software platforms, payment systems and integrations to ensure they are reliable, secure, accurate and ready for production use .

Key Responsibilities

Software & Functional Testing

• Prepare test plans, test scenarios, test cases and test data based on business and technical requirements.
• Perform functional, integration, system, regression and user acceptance testing.
• Test web-based, mobile and backend applications.
• Identify, document and track software defects through to resolution.
• Retest corrected defects and conduct regression testing before production releases.
• Verify that delivered software meets approved business and technical requirements.

Card Issuing & Payment Testing

• Test physical and virtual card issuance workflows.
• Test card activation, suspension, freeze/unfreeze, replacement and cancellation.
• Test transaction authorisation, decline and reversal scenarios.
• Test refunds, partial refunds and duplicate transactions.
• Test card spending limits and transaction controls.
• Verify transaction status throughout authorisation, clearing and settlement.
• Test card-processor and external payment-system integrations.
• Validate transaction notifications and customer transaction histories.
• Test exceptional and failed transaction scenarios.

Digital Wallet & Ledger Testing

• Test wallet creation, funding, transfers and balance calculations.
• Verify the relationship between wallet balances, card transactions and ledger entries.
• Test authorisation holds and release of expired or reversed holds.
• Validate refunds, reversals and adjustments.
• Confirm transaction records remain accurate throughout the payment lifecycle.
• Test reconciliation between AntBank records and external processor or settlement records.

Database Testing

• Validate database records against application and transaction results.
• Test data accuracy, consistency and integrity.
• Verify relationships between customer, wallet, card and transaction records.
• Test duplicate-transaction prevention and idempotency controls.
• Identify missing, duplicated or inconsistent records.
• Test database behaviour under failed or interrupted transactions.
• Verify that sensitive data is handled according to security requirements.

API & Integration Testing

• Test APIs connecting AntBank with card issuers, processors, payment providers and other external systems.
• Validate API requests, responses, authentication and error handling.
• Test webhooks and transaction notifications.
• Test timeout, retry and duplicate-message scenarios.
• Verify appropriate handling of invalid or unexpected data.
• Use tools such as Postman or equivalent API-testing platforms.

Security & Compliance Testing

• Support testing of access controls, user permissions and authentication.
• Verify that sensitive payment and cardholder information is not unnecessarily exposed.
• Check applications and logs for inappropriate exposure of sensitive information.
• Support testing associated with PCI DSS and AntBank's security requirements.
• Test audit trails and administrative activity records.
• Verify role-based access and least-privilege controls.
• Assist with vulnerability remediation testing.
• Escalate material security or data-integrity issues immediately.

The Software Tester is not expected to independently perform formal PCI DSS certification or penetration testing unless appropriately qualified. Specialist assessments may be conducted by external security or compliance providers.

Test Automation

The Software Tester should progressively support automation of repeatable tests, including:

• API testing
• Regression testing
• Transaction-flow testing
• Database validation
• Integration testing

Experience with tools/frameworks such as Selenium, Playwright, Cypress, Postman/Newman, JMeter or equivalent technologies would be valuable.

Defect Management & Documentation

The position will:

• Clearly document defects with reproduction steps and supporting evidence.
• Assign appropriate severity and priority.
• Work with software developers to investigate issues.
• Maintain testing records and evidence.
• Prepare testing completion reports.
• Maintain regression test suites.
• Support release-readiness decisions.
• Ensure critical defects are resolved or formally addressed before production deployment.

Required Skills and Qualifications

The preferred candidate should have:

• A relevant qualification in Computer Science, Software Engineering, Information Technology or a related discipline .
• Experience in software testing, quality assurance or software development.
• Understanding of software development and testing methodologies.
• Knowledge of SQL and relational databases.
• Experience testing REST APIs and system integrations.
• Ability to prepare structured test cases and test reports.
• Strong analytical and problem-solving skills.
• Ability to identify and reproduce complex software defects.
• Good written technical documentation skills.
• Understanding of software and data security principles.

Preferred Fintech Experience

Experience or knowledge in any of the following would be highly regarded:

• Card issuing or card processing
• Mastercard/Visa payment systems
• Digital wallets
• Payment gateways
• Banking or fintech platforms
• Payment transaction lifecycle
• Authorisation, clearing and settlement
• Reconciliation
• PCI DSS
• Financial ledgers
• KYC/AML system integration
• API security
• Database security

Key Systems to Be Tested

• AntBank Card — card issuance and transaction functions
• AntBank Digital Wallet — wallet and account functionality
• NZDR — digital asset/wallet integration where applicable
• Gift Card Merchant Network — merchant and payment functionality
• Card Issuer/Processor Integration — external card platform connectivity
• Internal Administration Platform — operations, customer support and transaction management

Key Performance Expectations

Performance can be assessed based on test coverage, defect detection before production, quality of test documentation, regression-test effectiveness, accuracy of transaction/database validation, turnaround time for testing, and the number/severity of production defects attributable to inadequate testing .

For AntBank, I would keep the official title simply “Software Tester” while making the job description strongly focused on financial software, card issuance, wallet, API and database testing . That gives you a broad enough employment title while making the genuine business need for the position very clear.