Test Engineer

To ensure the quality, reliability, performance, and stability of enterprise Contact Center applications through comprehensive functional, integration, API, automation, regression, and performance testing. The role requires hands-on expertise in testing VoIP-based Contact Center solutions, including Asterisk, FreeSWITCH, Kamailio, inbound/outbound dialers, IVR, Voice Bots, CRM integrations, and REST APIs. Responsible for designing and executing test strategies, identifying defects, validating end-to-end calling workflows, and ensuring production readiness of Contact Center applications supporting high-volume business operations.

• Functional Testing
  • Perform functional, regression, integration, and end-to-end testing.
  • Validate inbound/outbound calling, campaign management, IVR, and call routing.
  • Test agent login, call transfer, conference, disposition, callback, and rechurn functionalities.
• VoIP Dialer Testing
  • Test Asterisk, FreeSWITCH, Kamailio, and SIP-based applications.
  • Validate SIP trunking, call connectivity, call recording, and voice quality.
  • Identify call failures, audio issues, and telephony defects.
• API Database Testing
  • Perform REST API testing using Postman.
  • Validate integrations between Dialer, CRM, Voice Bot, and other applications.
  • Perform database validation using SQL, PostgreSQL, and MySQL.
  • Validate CDR, disposition, reporting, and data accuracy.
• Automation Performance Testing
  • Develop and execute automation test scripts using Selenium, Playwright, or Python.
  • Perform load and performance testing using JMeter.
  • Validate concurrent calls, CPS, dialing throughput, and application response times.
• Defect Release Management
  • Identify, report, and track defects through closure.
  • Coordinate with development teams for issue resolution.
  • Support SIT, UAT, production deployment, and regression testing.
  • Prepare test cases, execution reports, and QA sign-off recommendations.

• Experience with Asterisk, OpenSIPS, or other VoIP platforms.
• Knowledge of WebRTC and real-time communication technologies.
• Familiarity with REST APIs and their integration with VoIP systems.
• Define testing scenarios and test coverage.
• Identify and prioritize defects based on severity.
• Recommend application readiness for production deployment.
• Suggest improvements in testing processes and automation.
• Escalate critical defects and quality risks.

• Application Quality: Ensure stable and defect-free application delivery.
• High Call Volume: Validate performance during high concurrent calling.
• VoIP Testing: Identify call failures and voice quality issues.
• Integration Testing: Ensure smooth integration across CRM, Dialer, and Voice Bot.
• Automation: Reduce manual testing through automation.
• Release Timelines: Complete testing within planned release timelines.
• Production Stability: Minimize production defects and recurring issues.

a) Minimum qualification required is BE/B-Tech/ Computer Science / IT and electronics with an Implementation BE/B.Tech in Computer Science, IT, Electronics, or a related field.

• 3+ years of experience in Software QA and Testing.
• Experience in Contact Center, Dialer, Telecom, or VoIP applications preferred.
• Experience in automation and API testing.