# QA Engineer - VoIP / SIP / SBC Testing

**Company:** [Sangoma](http://jobs.workable.com/companies/qkQuMr5JeZBkLcvhX7sxe8.md)
**Location:** Bengaluru, India
**Workplace:** on site
**Employment type:** Full-time
**Department:** Development and Engineering

[Apply for this job](http://jobs.workable.com/view/1ae2c881-f0e9-44cc-bac3-638a4ae8190a)

## Description

**QA Engineer - VoIP / SBC / Gateway Testing**

Sangoma is looking for a QA Engineer with hands-on experience in VoIP and telecom testing to validate our NSC/SBC and Vega Gateway solutions. The ideal candidate will be responsible for functional, regression, interoperability, system, and performance testing while ensuring the quality and reliability of our telecom products.

**Key Responsibilities**

-   Design, develop, and execute test plans, test cases, and test scenarios.
-   Validate SIP/ISDN signaling, VoIP call flows, media handling, SBC, and gateway features.
-   Perform functional, regression, interoperability, end-to-end, system, and release testing.
-   Analyze SIP traces, packet captures, and system logs to identify and troubleshoot issues.
-   Validate SIP trunking, PSTN connectivity, codec negotiation, DTMF, T.38 Fax, and call routing.
-   Collaborate with Development, Product Management, and Support teams to investigate, reproduce, and verify reported defects.
-   Ensure product quality throughout the software development lifecycle.

## Requirements

**Must-Have Skills**

-   3+ years of QA experience in Telecom, VoIP, Networking, or Unified Communications.
-   Strong understanding of SIP and ISDN call flows and signaling.
-   Solid networking fundamentals, including TCP/IP, UDP, NAT, VLAN, DNS, and DHCP.
-   Experience testing SIP Trunks, Session Border Controllers (SBCs), Media Gateways, or IP-PBX systems.
-   Experience creating and executing manual functional and regression test cases.
-   Hands-on experience with Linux OS, Jira, and debugging tools such as Wireshark and tcpdump.
-   Strong analytical and troubleshooting skills.

**Preferred Skills**

-   Experience with Sangoma NSC/SBC and Vega Gateway products.
-   Hands-on experience with SIPp and SIP phones.
-   Knowledge of telecom technologies, including SIP Trunking, PSTN, PRI, FXO/FXS, and T.38 Fax.
-   Experience working in cloud or virtual telecom environments.
-   Basic scripting or test automation using Python or Shell scripting is an advantage.

**Qualifications**

-   Bachelor's degree in Computer Science, Electronics, Telecommunications, Information Technology, or a related field (preferred).
-   3-4+ years of experience in QA for VoIP, Telecom, Networking, or Unified Communications environments.

## Benefits

At Sangoma, we value our employees and provide benefits designed to support their professional growth, financial security, and overall well-being.

-   **Health & Medical Coverage:** Medical insurance coverage to support employees and provide access to healthcare benefits.
-   **Work-Life Balance:** Flexible work schedule that enables employees to maintain a healthy balance between professional and personal commitments.
-   **Financial Security:** Provident Fund (PF) benefits and Gratuity benefits in accordance with applicable statutory requirements.
-   **Career Growth Opportunities:** Opportunity to work on innovative telecom and communication technologies while collaborating with experienced engineering and product teams.
-   **Learning & Development:** Exposure to advanced VoIP, SIP, SBC, and gateway technologies with opportunities to enhance technical expertise.
-   **Collaborative Work Environment:** Work with cross-functional teams including Engineering, Product Management, and Support in a global technology organization.