Quality Assurance Engineer

Duplo USA Corporation

Quality Assurance Engineer responsible for automated testing in payment systems at Nigerian fintech startup. Ensuring software quality using Cypress and API testing tools.

Posted 5/26/2026full-timeLagos • 🇳🇬 NigeriaMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

CypressGraphQLJavaScriptTypeScript

About the role

Key responsibilities & impact

Design, develop, and maintain automated end-to-end test suites using Cypress, focusing on payment flows
Implement the Page Object Model (POM) pattern for scalable test architecture across payment features
Develop reusable custom Cypress commands and simulate payment gateway responses
Integrate Cypress test suites into CI/CD pipelines for automated regression runs
Analyse and maintain test stability, resolving flaky tests around payment-critical paths
Design and execute comprehensive API test suites covering payment APIs
Validate REST and GraphQL APIs including request/response schemas
Perform contract testing and load testing for payment API endpoints
Collaborate with backend engineers on API specifications and edge cases
Create detailed test plans, test cases, and test reports
Perform exploratory, regression, smoke, and sanity testing across web and payment surfaces
Champion a risk-based testing approach for high-value financial scenarios
Document and track defects using tools like Jira or Linear
Execute and maintain cross-browser test coverage, ensuring user experience consistency
Configure and maintain automated test execution within CI/CD pipelines
Contribute to shift-left testing initiatives for quality checks at early development stages

Requirements

What you’ll need

3–5 years of hands-on experience in a software QA engineering role
Demonstrable experience testing payment systems, including payment gateways, transaction flows, refund processing, or financial data pipelines
Familiarity with payment industry standards and concepts such as PCI-DSS, 3DS authentication, tokenisation, or PSD2 is a strong advantage
Strong practical experience with Cypress for end-to-end test automation
Solid proficiency in JavaScript or TypeScript for writing and maintaining test scripts
Proven experience in API testing and automation (REST / GraphQL)
Demonstrable experience integrating tests into CI/CD pipelines
Solid understanding of cross-browser testing strategies and tooling
Experience with manual testing methodologies including exploratory and regression testing
Familiarity with Agile / Scrum development workflows and sprint-based delivery
Strong analytical and problem-solving skills with excellent attention to detail
Clear verbal and written communication skills

Benefits

Comp & perks

Competitive salary
Flexible work arrangements

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

CypressJavaScriptTypeScriptAPI testingRESTGraphQLcontract testingload testingend-to-end test automationPage Object Model

Soft Skills

analytical skillsproblem-solving skillsattention to detailcommunication skills