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Senior QA Automation; Python Networking

Job in Cardiff, Cardiff City Area, CF10, Wales, UK
Listing for: Luxoft
Full Time position
Listed on 2026-07-16
Job specializations:
  • Quality Assurance - QA/QC
    IT QA Tester / Automation
Job Description & How to Apply Below
Position: Senior QA Automation (Python) with Networking

Project description

Product verification & testing for an L1-L3 Traffic Generator Solution for a Global Networking Testing and Validation equipment provider. Our team is a group of networking enthusiasts committed to customer success. Technologies used include networking protocols, traffic generation tools, Windows/Linux servers, network virtualization, network management tools, and microservices. Opportunities involve networking and testing certifications, collaboration with an international team of professionals, working with the latest networking technologies and concepts, and access to training.

Responsibilities
  • Design, implement, and verify complex automated system test cases for Ethernet network equipment.
  • Derive automation requirements from manual functional test specifications and hardware validation reports.
  • Collaborate with the development team to translate software requirements into high‑quality test automation suites.
  • Develop automation for end‑to‑end solution validation and integrate the automation for seamless validation.
  • Define and review long‑term performance and scalability test scenarios.
  • Implement, execute, and debug PyTest/Python automated test scripts on a Linux‑based platform.
  • Analyze and manage automated regression test execution failures.
  • Debug and troubleshoot complex issues, working closely with the engineering team to address failures and validate fixes.
  • Integrate test suites into CI/CD pipelines.
  • Collaborate closely with hardware and software development teams to triage test failures and drive quality improvement.
  • Reproduce and root‑cause hardware/firmware defects through systematic test isolation.
  • Use AI tooling (e.g., Claude Code, agentic AI) for customer‑specific heavy usage patterns.
  • Review customer deployments and customer‑found issues, addressing gaps in test coverage.
Must have
  • Overall QA background of 6+ years, with 4+ years in testing networking domain‑related applications.
  • QA Automation experience in an Agile/SCRUM team, focused on API and/or CLI testing (4+ years);
    Python strongly preferred (other comparable languages considered).
  • Automated testing for API or CLI for 4+ years, including experience in test harness or framework development.
  • Practical experience with telecom network equipment like routers, switches, and traffic generators.
  • Experience with and understanding of the OSI/TCP/IP Network Stack layers L1 – Physical and L2 – Data Link.
  • Practical experience with AI tooling in day‑to‑day activities to improve productivity and delivery quality (code generation, code review, automation, agentic AI, MCP usage, etc.).
  • Experience in performance, scale, and convergence testing; ability to analyze and improve performance and convergence at the system level.
  • Ability to develop and publish solution validation documents and test reports.
  • Strong verbal and written communication skills; able to communicate effectively across QA and development teams.
  • Highly motivated, self‑driven, and able to collaborate cross‑functionally to meet challenging goals.
Nice to have
  • Linux OS variants (Ubuntu, Debian) – knowledge.
  • CI/CD (Jenkins, Git Lab, or similar) and issue‑tracking tools (JIRA, Confluence).
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Position Requirements
10+ Years work experience
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