Senior QA Engineer - Data Lake

PayNet (Payments Network Malaysia)Kuala Lumpur, Kuala Lumpur, Malaysia

1 day ago

Job description

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Summary of Responsibilities

As a QA Engineer, you will play a critical role in designing, developing, and implementing automated testing frameworks to ensure the quality and reliability of our data-driven applications and APIs. You will be responsible for expanding test automation coverage, optimizing test strategies, and collaborating closely with development, data, product teams and other stakeholders.

This role requires a strong understanding of software testing methodologies, API validation, performance testing, and automation tools.

Key Areas of Responsibilities

Test Strategy and Planning

Contribute to test strategy formulation and drive improvements in test planning.
Define test scope, success criteria, and test environments for different projects.
Collaborate with stakeholders to align test coverage with business objectives.

Test Execution & Automation

Implement and execute manual and automated test cases across APIs, databases, and UIs.

Expand automation test coverage using Python (pytest), Postman, and any other frameworks.

Identify inefficiencies in the testing process and propose improvements.

Ability to detect design flaws and inconsistencies.

Ability to analyse design documents, identify gaps or inconsistencies in requirements, and ensure completeness.

Investigate, track, and document defects using proper defect management tools.

Conduct root cause analysis and work with developers to ensure timely fixes.

Continuously monitor test results and improve stability.

CI / CD & Security

Enhance CI / CD integration by automating test execution in Gitlab pipelines.

Apply OWASP Top 10 security best practices in API and performance testing.

Maintain comprehensive test documentation, including test cases, scripts, and reports.

Work closely with Developers, QAs, and Data Engineers to improve quality assurance processes.

Mentor Junior QA Engineers and provide technical guidance.

Coordinate on software release, including managing Change Requests (CRs), ensuring all items in the CR are tested in UAT, staging, and production (post-deployment).

Functional Competencies

GraphQL

Expertise in query syntax, fields, arguments, types, and resolvers.

Ability to create queries to test use cases and validate responses.

Knowledge of how to handle errors and validate error messages.

Ability to use tools like Postman to test GraphQL endpoints.

SQL

Expertise in writing SQL queries to retrieve and validate data.

Ability to construct queries for testing data integrity and accuracy.

Python

Expertise in scripting for automation tests against data structures, data quality, GraphQL API, REST API or any other data related scripting.

Ability to write script to verify data accuracy across different data sources like DB, text files, PDF, API, etc.

Automation Testing Frameworks

Advanced proficiency in Python-based testing frameworks and tools (pytest, SGQLC, openpyxl, pdfplumber, etc.).

Familiarity and knowledge of using Postman.

Experience with k6, JMeter for API and system performance validation, including system monitoring tools like Grafana, Datadog, Dynatrace, etc.

Strong understanding of GitLab / Jenkins for automated testing.

API Development

Experience in API authentication and authorization methods.

Familiarity with RESTful API, GraphQL API, gRPC

Security

OWASP Top 10 knowledge for API security assessment.

General Software Engineering Skills

Familiarity with version control systems like Git.

Understanding of Agile development practices.

Soft Skills

Good collaboration skills to work with Developers, Data Engineers, and stakeholders.

Strong communication skills for conveying technical concepts.

Strong analytical and problem-solving skills.

Ability to work in multidisciplinary teams and promote knowledge sharing.

Qualifications & Experience

Minimum Qualifications

Bachelor’s degree in computer science, Information Systems Technology, or Software Engineering

3-5 years’ experience in QA / testing, with a focus on automation and API testing.

Experience in Financial Services and / or Technology sectors is a plus.

Proficiency in both English and Bahasa Malaysia.

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Senior Data Engineer • Kuala Lumpur, Kuala Lumpur, Malaysia

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