Product Test Engineer

Key Responsibilities • Analyze business and functional requirements, identify test scenarios, and ensure comprehensive test coverage. • Prepare, execute, and maintain test plans, test cases, and test strategies across product releases. • Perform functional, integration, regression, system, and end-to-end testing of telecom and VAS products. • Develop and maintain automated test suites using industry-standard test automation frameworks and tools. • Conduct API testing and validate integrations with external and internal systems. • Perform unit, performance, load, and reliability testing to ensure product stability and scalability. • Troubleshoot issues, perform root cause analysis, and collaborate with development teams for timely resolution. • Configure, deploy, and validate applications across Linux and virtualized environments. • Create and monitor dashboards, logs, and reports to proactively identify system issues. • Participate in Agile ceremonies and contribute to continuous improvement of testing processes and product quality. • Ensure adherence to quality standards, security guidelines, CI/CD processes, and release management practices. • Collaborate with customers, project teams, and stakeholders for requirement clarification and issue resolution. Mandatory Skills • Strong understanding of Software Development Life Cycle (SDLC), requirement analysis, and test planning. • Experience with scripting languages such as Python, Perl, or Shell scripting. • Hands-on experience with relational databases such as MySQL, Oracle, or MariaDB. • Strong knowledge of testing concepts, test execution, defect lifecycle management, and quality assurance processes. • Experience with unit testing, load testing, code coverage, and debugging tools such as JUnit, JMeter, JaCoCo, GDB, or similar. • Hands-on experience with test automation tools such as Selenium, Robot Framework, Postman, Rest Assured, Appium, or equivalent. • Good understanding of operating systems, particularly Linux. • Experience working with Redis, MongoDB, or other in-memory database technologies. • Knowledge of monitoring and observability tools such as Grafana, Kibana, ELK, Nagios, or similar platforms. • Experience with CI/CD tools and DevOps practices including Jenkins, SonarQube, build tools, and automated deployment pipelines. • Understanding of cloud technologies and deployment environments. • Familiarity with security testing tools and secure development practices. • Knowledge of VAS product environments and testing methodologies. • Strong analytical, troubleshooting, and debugging skills. Desirable Skills • Hands-on experience with Java, Python, PHP, JavaScript, Shell, AWK, or Perl development. • Knowledge of web servers such as Tomcat, Apache HTTPD, or Nginx. • Experience with containerization technologies such as Docker and Kubernetes. • Understanding of networking, clustering, and distributed systems concepts. • Knowledge of GSM, 3G, 4G, and 5G network architecture and telecom ecosystems. • Familiarity with telecom protocols such as SS7, SIGTRAN, IP, TCAP, SCCP, M3UA, SCTP, SMPP, DIAMETER, and RADIUS. • Experience in advanced troubleshooting, performance analysis, and root cause analysis. • Working knowledge of Agile methodologies and Scrum practices. • Exposure to NoSQL databases and distributed data platforms. • Understanding of software architecture principles, design patterns, and release management processes. • Customer-facing experience and stakeholder management skills.