Experience Required: 4+ Years

Location: Remote or Onsite

Employment Type: Full-Time

About Dot and Beyond

Dot and Beyond is a product strategy and experience design studio working at the intersection of tech and business outcomes. We’re partnering with a cloud-based telecom platform that spans VoIP, SIP, UCaaS, and AI-enabled PBX systems. We’re looking for a QA Engineer who understands the complexity of real-time communication systems and can test at both protocol and product levels.

Role Overview

We’re seeking a QA Engineer with deep hands-on experience in testing VoIP, PBX, and WebRTC platforms. This role requires a strong foundation in SIP/RTP, debugging tools like Wireshark and sngrep, and a good understanding of service-level issues across Linux environments. You’ll be involved in end-to-end testing of real-time communication flows including IVR, call forwarding, video calling, and quality assurance across audio/video pipelines.

Key Responsibilities

• Design and execute test plans for VoIP platforms such as FreeSWITCH and Asterisk.
• Perform SIP and RTP flow testing using tools like sngrep, Wireshark, and analyse call quality metrics (MOS, jitter, packet loss).
• Test RESTful APIs and WebSocket-based communication for call events, messaging, and control flows.
• Validate WebRTC-based video calling modules, including multi-party video rooms.
• Conduct end-to-end functional testing of hosted PBX features: IVR, voicemail, call transfer, call forwarding, DND, etc.
• Collect and analyse logs in Linux server environments to troubleshoot service-level issues.
• Perform load and stress testing using tools like JMeter, k6, and simulate concurrent call loads.
• Collaborate closely with developers and product owners to define QA strategies and test coverage.

Required Skills

• Minimum 4+ years of QA experience in telecom/VoIP/real-time platforms.
• Strong understanding of SIP, RTP, ICE, and debugging call flows.
• Proficiency in tools like Wireshark, sngrep, and Linux log analysis.
• Experience testing RESTful APIs and WebSockets.
• Good understanding of WebRTC, including video pipeline behaviour.
• Familiarity with hosted PBX environments and their feature sets.
• Experience with audio/video quality testing and interpreting MOS scores.

Nice to Have

• Familiarity with CI/CD pipelines and automation frameworks.
• Exposure to monitoring/log aggregation tools (e.g. Kibana, Prometheus, Grafana).
• Experience writing automated test scripts for VoIP workflows.

Please send your resume to srk@dotandbeyond.com if this role excites you.