Senior QA Engineer – Manual Testing & Application Monitoring

Role Overview

Functional and Manual Testing

• Design, develop, and execute functional, regression, integration, smoke, and end-to-end test cases.
• Validate complex web-based customer journeys including registration, quotation, checkout, payment, and post-purchase transactions.
• Perform cross-browser compatibility, responsive design, and mobile web testing.
• Review business requirements, UX designs, and acceptance criteria to identify gaps and ensure adequate test coverage.
• Document, prioritize, and track defects, supporting UAT, release validation, and production readiness.

Application Monitoring and Observability

• Operate application monitoring and observability tools to investigate production issues across frontend, backend, API, and infrastructure layers.
• Monitor application exceptions, failed transactions, API availability, latency, slow page loads, user-impacting errors, and performance regressions.
• Investigate incidents by correlating exception stack traces, application logs, browser console and network evidence, distributed traces, session replays, release changes, and service health indicators.
• Analyze incident severity, recurrence, frequency, and impact on customer journeys and business operations.
• Maintain and improve monitoring dashboards, alert configurations, thresholds, incident classifications, and escalation procedures.
• Validate monitoring coverage, monitor release health, and confirm that production fixes resolve reported issues.

API and Integration Testing

• Test REST APIs using Postman or equivalent tools, validating request and response payloads, authentication, status codes, and error handling.
• Investigate HTTP errors, timeouts, unexpected responses, and integration failures.
• Validate integrations between eCommerce platforms, payment gateways, core systems, and third-party services.
• Use browser developer tools and diagnostic evidence to investigate client-server communication issues.

Technical Troubleshooting and Incident Management

• Act as a technical quality contact between business stakeholders, internal IT teams, and external development vendors.
• Reproduce production incidents and provide clear, evidence-based defect reports with steps to reproduce, logs, screenshots, and network traces.
• Investigate recurring defects, identify likely root causes or contributing factors, and verify corrective actions.
• Prioritize incidents according to customer impact, business criticality, and technical severity.
• Support incident escalation and resolution with engineering and application support teams.

Reporting and Continuous Improvement

• Maintain QA execution reports, defect registers, incident investigation reports, and application stability reports.
• Track test coverage, critical production defects, failed transactions, incident recurrence, detection and resolution times, and release quality.
• Recommend improvements to test processes, observability coverage, alerting, incident handling, and release validation.
• Produce clear technical findings and concise summaries for business and engineering stakeholders.

Mandatory Qualifications and Experience

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related discipline.
• At least 6+ years of software QA experience with strong hands-on manual testing of web applications.
• Proven experience testing complex transactional web applications, ideally involving eCommerce, checkout, payments, or similar customer-facing workflows.
• Practical API testing experience using Postman, Swagger, or equivalent tools.
• Strong understanding of HTTP, JSON, REST APIs, status codes, and client-server architecture.
• Proficiency in browser developer tools, particularly Console and Network, for investigating JavaScript errors, failed requests, and API issues.
• Experience with Jira, Azure DevOps, or equivalent defect and test management tools.
• Ability to investigate technical defects, document reproducible evidence, and collaborate with developers and external vendors.
• Strong written and verbal communication skills with the ability to explain technical findings and business impact clearly.

Highly Preferred

• Hands-on production experience with at least one application observability or APM platform such as Sentry, Datadog APM/RUM, New Relic, Dynatrace, Elastic Observability, Grafana, Cisco AppDynamics, Azure Application Insights, or AWS CloudWatch.
• Demonstrated personal involvement in investigating production incidents affecting application functionality, performance, API availability, or customer transactions.
• Experience interpreting application logs, metrics, traces, exception stack traces, API latency, and release health indicators.
• Experience in eCommerce, fintech, banking, insurance, or other transaction-intensive digital environments.

Additional Advantages

• Direct experience configuring Sentry alerts, dashboards, issue tracking, or instrumentation.
• Basic JavaScript or TypeScript and SQL knowledge.
• Familiarity with Playwright, Cypress, or Selenium.
• Exposure to CI/CD pipelines, Agile delivery, GA4, or behavioral analytics tools.
• ISTQB certification.

Expected Deliverables