Senior System Tester – QA Lead for Complex Systems

About the role

We are looking for a Senior System Tester to lead quality assurance across complex, high‑availability systems. You will ensure functionality, performance and reliability meet the highest standards, supporting critical deployments in a fast‑paced environment.

Key responsibilities

• Lead end‑to‑end testing activities, from planning and design to execution and closure.
• Design and execute test cases based on functional and technical specifications.
• Perform functional, integration, system, regression and performance testing.
• Validate system integrations across multiple components and platforms.
• Analyze real‑time data flows to ensure accuracy and consistency.
• Identify, log and track defects, collaborating closely with development teams for timely resolution.
• Review requirements and design documents to ensure testability and coverage.
• Support simulation and scenario‑based testing where required.
• Mentor junior testers and promote testing best practices.
• Collaborate with developers, stakeholders and operations teams.

Required profile

• Bachelor’s degree in Computer Science, Engineering or a related field.
• Minimum 8 years of experience in system or software testing.
• Strong understanding of SDLC, STLC and QA methodologies.
• Experience testing complex or mission‑critical systems.
• Ability to work independently and support night/after‑hours testing as needed.
• Excellent analytical, troubleshooting and communication skills.

Required skills

• SQL database testing.
• API testing concepts.
• Test management and defect tracking tools (e.g., JIRA, TestRail).
• Performance and load testing tools.
• Automation tools such as Selenium and Python‑based frameworks.
• ISTQB or equivalent certification (preferred).