Senior System Tester

About the role

We are looking for a Senior System Tester to lead quality‑assurance activities across complex, high‑availability systems. You will ensure functional, performance and reliability standards are met while supporting night‑time and after‑hours testing cycles.

Key responsibilities

• Lead end‑to‑end testing: planning, design, execution and closure.
• Design and run test cases based on functional and technical specifications.
• Perform functional, integration, system, regression and performance testing.
• Validate integrations across multiple components and platforms.
• Analyze real‑time data flows for accuracy and consistency.
• Identify, log and track defects, collaborating closely with development teams.
• Review requirements and design documents to ensure testability.
• Support simulation and scenario‑based testing when needed.
• Mentor junior testers and promote testing best practices.
• Collaborate with developers, stakeholders and operations teams.
• Execute other testing duties as assigned.

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.
• Basic to intermediate knowledge of database testing (SQL) and API testing.
• Experience testing complex or mission‑critical systems.
• Proficiency with test‑management and defect‑tracking tools such as JIRA and TestRail.
• Ability to work independently and drive tasks proactively.
• Excellent analytical, troubleshooting and communication skills.
• Availability for night and after‑hours testing as required.

Required skills

• SQL
• API testing
• JIRA
• TestRail
• Selenium
• Python (for automation frameworks)
• Performance and load testing tools
• ISTQB or equivalent certification