Senior QA Engineer with Networking and Physical Layer

: 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

Execute manual, exploratory and automated test cases for Ethernet network equipment at the

physical L1 and data link L2 layer of the OSI stack

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

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)

Perform acceptance and commissioning-style testing for L0/L1 features, reproducing complex lab

scenario

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

Validate Network Management System (NMS) integration and interoperability scenarios with

multivendor optical and transport equipment

Reproduce and root-cause hardware and firmware defects through systematic test isolation at the

PHY level

Analyze test failures, capture logs, and document defects with clear reproduction steps in the issue

tracker

Collaborate closely with hardware and software development teams to triage failures and drive

quality improvements

Derive test requirements from hardware validation reports and functional test specifications

Support traffic generator setup and execution (Spirent, Ixia) for link-level and stress testing

Contribute to CI/CD test integration for automated regression coverage of physical-layer test suites

Skills

Must have

Strong practical experience in working with networking domain related applications, 5+ years (debugging,

troubleshooting, integration).

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

perator or transmission engineering environment.

Experience with E2E transport service testing: circuit provisioning/validation, acceptance testing, and fault

isolation across multivendor environments including alarm handling and outage impact analysis.

Experience monitoring and analyzing QoS/KPI indicators for transport and packet domains (latency, jitter,

availability, SLA compliance).

QA experience in an Agile/SCRUM team with both manual and automated testing; experience in

performance, scale, and convergence testing at 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

Automated Testing for UI, API, or CLI (1+ years).

Knowledge Linux OS variants (Ubuntu, Debian).

CI/CD (Jenkins, GitLab, or similar) and issue tracking tools (JIRA, Confluence).

Experience with transmission Network Management Systems (NMS), e.g., Huawei iManager, Alcatel-

Lucent Photonic Manager, or equivalent.

Hands-on knowledge of optical and transport equipment or equivalent multivendor transmission

hardware.

OTDR testing and fiber optic measurement experience.

Certification or formal training in transmission technologies: SDH, DWDM, CCNA, or equivalent.

Other

Languages

English: B2 Upper Intermediate

Seniority

Senior