Senior QA Engineer with Networking and Physical Layer

Project description

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

Responsibilities

• o Execute manual, exploratory and automated test cases for Ethernet network equipment at the physical L1 and data link L2 layer of the OSI stack o Design and execute ethernet physical layer test cases covering MAC/PCS/FEC state, link negotiation, BER counters, port state transitions, transceiver operation and error counters o Validate alarm handling, fault isolation, and event monitoring capabilities of the product against realworld telecom network scenarios (including outage impact analysis and incident management workflows) o Perform acceptance and commissioning-style testing for L0/L1 features, reproducing complex lab scenario o Analyze QoS and performance metrics at the transport/packet domain level; validate the product's ability to measure and report on delay, jitter, packet loss, and load-balancing across L0/L1 links o Validate Network Management System (NMS) integration and interoperability scenarios with multivendor optical and transport equipment o Reproduce and root-cause hardware and firmware defects through systematic test isolation at the PHY level o Analyze test failures, capture logs, and document defects with clear reproduction steps in the issue tracker o Collaborate closely with hardware and software development teams to triage failures and drive quality improvements o Derive test requirements from hardware validation reports and functional test specifications o Support traffic generator setup and execution (Spirent, Ixia) for link-level and stress testing o Contribute to CI/CD test integration for automated regression coverage of physical-layer test suites

SKILLS

Must have

• o Strong practical experience in working with networking domain related applications, 5+ years (debugging, troubleshooting, integration). o Solid understanding of wired telecom physical layer transmission technologies: SDH, PDH, DWDM, Ethernet/Gigabit Ethernet, VLANs, and Fiber Optics — ideally gained from hands-on work in a Telco operator or transmission engineering environment. o Experience with E2E transport service testing: circuit provisioning/validation, acceptance testing, and fault isolation across multivendor environments including alarm handling and outage impact analysis. o Experience monitoring and analyzing QoS/KPI indicators for transport and packet domains (latency, jitter, availability, SLA compliance). o QA experience in an Agile/SCRUM team with both manual and automated testing; experience in performance, scale, and convergence testing at system level. o Ability to develop and publish solution validation documents and test reports. o Strong verbal and written communication skills; able to communicate effectively across QA and Development teams. o Highly motivated, self-driven, and able to collaborate cross-functionally to meet challenging goals.

Nice to have

o Automated Testing for UI, API, or CLI (1+ years). o Knowledge Linux OS variants (Ubuntu, Debian). o CI/CD (Jenkins, GitLab, or similar) and issue tracking tools (JIRA, Confluence). o Experience with transmission Network Management Systems (NMS), e.g., Huawei iManager, Alcatel- Lucent Photonic Manager, or equivalent. o Hands-on knowledge of optical and transport equipment or equivalent multivendor transmission hardware. o OTDR testing and fiber optic measurement experience. o Certification or formal training in transmission technologies: SDH, DWDM, CCNA, or equivalent.