Perform manual functional, integration, regression, and interoperability testing for voice services on ONTs. Validate SIP signaling and voice call scenarios using Wireshark, analyze protocol traces, create and execute test plans and cases, log and track defects, support embedded software verification, assist lab setup, and collaborate with developers and automation teams to improve testing and QA processes.
Job Title: Telecom QA Engineer (Manual Testing) – Mid/Senior Level
Key Skills: SIP, Wireshark, Telecom Testing, TCP/IP, UDP, RTP, Test Case Writing.
Location: Campinas - SP
Mode: Hybrid
We at Coforge are hiring Telecom QA Engineer (Manual Testing) with the following skill set.
Key Responsibilities
- Execute manual functional, integration, regression, and interoperability testing for voice services on optical network termination equipment (ONTs).
- Validate SIP signaling flows and voice call scenarios using packet analysis tools.
- Analyze network traffic and troubleshoot issues using Wireshark and protocol traces.
- Create, maintain, and execute detailed test cases, test plans, and test reports.
- Perform end-to-end validation of voice services over IP networks.
- Work closely with developers, automation engineers, and QA teams located in Brazil and the United States.
- Identify, document, reproduce, and track defects through their complete lifecycle.
- Participate in laboratory setup, configuration, and maintenance of telecom testing environments.
- Validate network behavior involving TCP/IP, UDP, RTP, DHCP, DNS, and related protocols.
- Support verification of embedded software running on telecommunications devices.
- Contribute to continuous improvement of testing processes and quality standards.
- Collaborate with automation teams and contribute to automation initiatives when applicable.
Required Skills & Qualifications
- Experience as a Manual QA Engineer or Telecom Test Engineer.
- Strong knowledge of Session Initiation Protocol (SIP).
- Experience using Wireshark for packet capture and protocol analysis.
- Understanding of networking fundamentals including TCP/IP, UDP, and RTP.
- Experience creating and executing test cases, test plans, and defect reports.
- Knowledge of software testing methodologies and QA best practices.
- Ability to troubleshoot network and voice service issues.
- Experience working with embedded devices or hardware-based platforms.
- Upper-Intermediate or Advanced English for collaboration with international teams.
Preferred Skills:
- Linux Command Line Interface (CLI).
- Jira or similar defect management tools.
- Test Planning and Test Execution.
- Media Gateway Control Protocol (MGCP).
- Megaco/H.248.
- Telecom laboratory testing environments.
- Root cause analysis and troubleshooting.
- Test Automation using Python.
- Robot Framework.
- Asterisk / FreePBX administration and troubleshooting.
- DHCP, DNS, FTP, and TFTP server configuration.
- TR-069 protocol knowledge.
- SIPp for SIP traffic generation and validation.
- Experience with VoIP infrastructure and carrier-grade telecommunications solutions.
- Exposure to CI/CD and automated testing practices.
- Knowledge of broadband and fiber access network technologies.
Posted On: 16-06-2026
At Coforge, we hire professionals based solely on their skills and do not discriminate based on age, disability, religion, gender, sexual orientation, socioeconomic status, or nationality.
Encora Santa Clara, California, USA Office
4988 Great America Parkway Santa Clara, CA , Santa Clara, CA, United States, 95054
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