Senior QA Engineer

About Zixi

Zixi provides a cloud based and on-premise software platform that enables reliable broadcast-quality video delivery over IP. The company offers the Zixi Platform for broadcasters, enterprises, over-the-top video providers, and mobile service providers around the world. The Zixi Platform makes it easy and economical for media companies to source, manage, localize, and distribute live events and 24/7 live linear channels in broadcast QoS, securely and at scale, using any form of IP network or Hybrid IP environments. Zixi provides enhanced control in large complex networks with ZEN Master, a live video orchestration and telemetry control plane that provides visual tools to configure, orchestrate, and monitor live broadcast channels and events across industry protocols. Over 15+ years, the Zixi Enabled Network (ZEN) has grown to over 300 technology partners and serves well over 700 customers representing most of the top media brands around the world with 10,000+ channels delivered daily.

About The Role

Zixi is seeking a Senior QA Engineer to join our Engineering team in Israel. This role focuses on ensuring the quality, reliability, and performance of the Zixi Platform while supporting mission-critical, broadcast-grade live video delivery across complex, distributed environments. As a senior individual contributor, you will work closely with Engineering and Product Management to validate new features, identify risks early, and help deliver high-quality releases. This role is ideal for someone who enjoys hands-on testing, problem solving, and working on technically challenging systems where quality truly matters.

Responsibilities Include But Are Not Limited To

Quality Assurance & Test Execution:

• Plan, execute, and document manual and automated test cases for backend services, APIs, and system-level workflows.
• Validate functional, integration, regression, and performance aspects of the Zixi Platform.
• Ensure new features meet product requirements and quality standards before release.
• Perform exploratory testing to identify edge cases and failure scenarios in complex workflows.
  
  

• Contribute to the development and maintenance of automated test suites.
• Execute and maintain automated tests as part of CI/CD pipelines.
• Identify opportunities to improve test coverage and reduce manual effort.
• Work closely with QA Automation Leads and Engineers to improve automation reliability.
  
  

• Identify, reproduce, and clearly document defects with detailed steps, logs, and supporting data.
• Collaborate with Engineering to troubleshoot issues and verify fixes.
• Participate in root cause analysis for critical defects and customer-reported issues.
  
  

• Work closely with Engineering and Product teams to clarify requirements and acceptance criteria.
• Provide feedback on product behavior, usability, and testability.
  
  

• Validate workflows that reflect real-world customer environments and scale.
• Assist in testing hotfixes and patches for production issues when needed.
• Help ensure customer-critical scenarios are covered in test plans.
  
  

• 5+ years of experience in Quality Assurance and Software Testing.
• Experience with test automation frameworks or scripting (e.g., Python, Java, JavaScript).
• Understanding of IP networking concepts (TCP/UDP, multicast, latency).
• Strong experience testing backend systems, APIs, and distributed platforms.
• Hands-on experience with Linux environments and command-line tools.
• Solid understanding of QA methodologies, test planning, and defect lifecycle.
• Strong analytical skills and attention to detail.
• Ability to work independently and take ownership of test areas.
  
  

• Experience testing cloud-based or distributed systems.
• Familiarity with live video, broadcast, or streaming technologies.
• Experience with performance, load, or stress testing.
• Knowledge of AI augmented testing procedures.
• Exposure to CI/CD pipelines and DevOps workflows.
  
  

• Consistently identifying issues early in the development cycle.
• Delivering thorough, high-quality test coverage for assigned features and systems.
• Being a reliable QA partner to Engineering and Product teams.
• Improving overall product quality and reducing escaped defects.
• Demonstrating strong ownership and accountability for quality outcomes.