IIoT L2 Support & Manual QA Engineer

Luxoft

Poland

On-site

PLN 70,000 - 90,000

Full time

3 days ago

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Benefits offered by this job

Private medical care

Dental care

Life insurance covered

Internal mobility program

Job summary

Luxoft is seeking an L2 Support Engineer / Manual QA for IoT/IIoT systems in Poland. You will ensure reliability of telemetry-driven platforms, perform troubleshooting across edge and cloud environments, and conduct manual testing to validate end-to-end data flows.

You will collaborate with DevOps and L3 teams to validate fixes before release. Responsibilities include diagnosing complex issues from logs and metrics, validating protocol-level communication (Modbus/MQTT), and ensuring data

Qualifications

Preferably IT education.
Experience as L2 Support Engineer.
Strong experience with telemetry data and time-series data.
Experience with industry monitoring and diagnostic platforms or control systems.
Edge and Cloud service experiences.
Hands-on knowledge of Modbus, MQTT or similar IIoT/industrial protocols.
Strong troubleshoot experiences to analyze logs, metrics, and protocol-level issues.
Understanding of IIoT architectures and data pipelines.
Experience with databases (SQL / NoSQL / Time Series).

Responsibilities

Ensure reliability and quality of telemetry-driven IIoT systems through troubleshooting, manual testing, and protocol-level diagnostics across edge and cloud environments.
Second-line support and quality validation of IoT and IIoT systems handling real-time telemetry data; investigate issues escalated from L1.
Validate fixes and configuration changes before production release; collaborate with development, DevOps, and L3 teams.
Perform manual functional, integration, and regression testing across UI, API, and backend layers.
Validate end-to-end data flows from devices and gateways through brokers and backend services to dashboards and reports.
Ensure data accuracy, correct aggregation, timestamp alignment, and proper resolution in time-series data.
Hands-on work with Modbus, MQTT, and similar IIoT/industrial protocols; monitor latency and anomalies.
Support continuous improvement of support and QA processes.