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QA Engineer - VoIP & SIP Testing

Open 24d

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.

What this application asks

workable

First name, Last name, Email, Preferred Name, Phone, Address, Mailing Address:, Photo, LinkedIn, Resume, Experience, Education, Cover letter, Desired Salary Expectations?, Work Authorization, Will you now or in the future require sponsorship for employment VISA status?, Are you 18 years of age or older?, Have you ever worked for Sangoma and/or any of Sangoma's acquired companies?, If Yes to working at Sangoma or previous acquired companies, please give dates of employment and position:, Are you related to any person currently employed at this company?, If yes, please supply employee's name, How did you hear about Sangoma?, If "Employee Referral" please give employee name:, Available Start Date:, Please write a brief paragraph explaining why you would like to work for Sangoma, and/or how you feel you could best contribute to our success:, Acceptance of Terms & Applicant Certification We welcome candidates who use tools to help organize and present their experience. However, all information submitted as part of your application, resume, assessments, interviews, and any other hiring-related communications must accurately reflect your personal experience, qualifications, accomplishments, and contributions. By applying for this position, you certify that all information provided is truthful, complete, and accurately represents your own work, experience, leadership responsibilities, technical contributions, and professional achievements. You acknowledge that you may be asked to discuss your experience, project outcomes, technical decisions, and accomplishments in detail throughout the interview and hiring process. I certify that my answers to all questions and all information submitted during the application and hiring process are true and correct and do not contain any material omissions. I understand that any false, misleading, incomplete, or otherwise inaccurate statements, representations, or omissions made on my application materials or during the pre-employment process may result in disqualification from consideration, withdrawal of an employment offer, or, if employed, disciplinary action up to and including immediate termination of employment. By submitting this application, I acknowledge and agree to these terms., Privacy Policy Acknowledgement: By checking this box, you acknowledge and consent to terms of the privacy policy which applies to the applicant tracking service being offered by Workable on behalf of Sangoma. The privacy policy offers an explanation of how and why your data will be collected, how it will be used and disclosed, how it will be retained and secured, and what legal rights are associated with that data (including the rights of access, correction, and deletion). The policy also describes legal and contractual limitations on these rights. The specific rights and obligations of individuals living and working in different areas may vary by jurisdiction. I have read and agree to this statement:

  • 3+ years of QA experience in Telecom, VoIP, Networking, or Unified Communications. yes / no
  • Solid networking fundamentals, including TCP/IP, UDP, NAT, VLAN, DNS, and DHCP. yes / no
  • Experience testing SIP Trunks, Session Border Controllers (SBCs), Media Gateways, or IP-PBX systems. yes / no
  • What is the current debugging tool you have used?
  • In what job have you worked with SIPp and SIP phones? written answer
  • How many years of scripting experience do you have?

See also