Technical Support Engineer – L2 at Intro Pro Llc

Project description

Development of monitoring and diagnostics system. It fulfils both local and remote data access and analytics requirement, as well as local and remote troubleshooting purpose. The work responsibilities contain L2 support + manual testing. Most of the L1 support team is in Asian tmezone, but we still have preferred EU zone.

Responsible for ensuring the reliability and quality of telemetry‑driven IIoT systems through advanced troubleshooting, manual testing, and protocol‑level diagnostics across edge and cloud environments. The L2 Support Engineer / Manual QA Engineer is responsible for second‑line support and quality validation of IoT and IIoT systems handling real‑time telemetry data. The role investigates complex issues escalated from L1, performing root‑cause analysis using logs, metrics, telemetry streams, and monitoring tools.

It involves diagnosing problems across edge and cloud environments, often running on Linux‑based systems. The engineer validates fixes and configuration changes before production release and collaborates closely with development, Dev Ops, and L3 teams. In parallel, the role performs manual functional, integration, and regression testing across UI, API, and backend layers. A key responsibility is validating end‑to‑end data flows from devices and gateways through brokers and backend services to dashboards and reports.

The engineer ensures data accuracy, correct aggregation, timestamp alignment, and proper resolution in time‑series data. The role requires hands‑on work with industrial and IoT protocols such as Modbus and MQTT, including validation of payloads, connectivity, and reconnection behavior. It also involves using monitoring and diagnostic systems to detect latency, data loss, or anomalies in real‑time systems. Overall, the role ensures system reliability, data quality, and observability while supporting continuous improvement across support and QA processes.

Preferrably IT education Experience as a Manual QA Engineer and L2 Support Engineer Strong experience with:
Telemetry data and time‑series data 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 manual testing experience (UI, API, backend) Strong troubleshoot experiences to analyze logs, metrics, and protocol‑level issues Understanding of IIoT architectures and data pipelines

Experience with databases (SQL / No

SQL / Time Series) Linux knowledge

AWS Green Grass CI/CD (Jenkins) Other LANGUAGES English: B2 Upper Intermediate SENIORITY Regular Related jobs View all vacancies Senior QA Engineer Manual Testing Viet Nam Remote Vietnam Lead – Solutions Test Engineer – Customer Engineering – Networking Manual Testing India Bengaluru Senior Python Test Automation Engineer Manual Testing Romania Remote Romania Luxoft

• Global Relocation Recognition and Evaluation Time Off
  *** Luxoft Training Center Well-being and Work-life Balance Health Care Company Events and Friendly Environment Internal Mobility Self-Learning Library CSR Projects
• The acquisition of rights to the above benefits depends on the form of cooperation.

apply to those employed under a contract of employment.
** Please note that relocation is not available for all open positions. At Luxoft Poland it is possible to work remotely only from the territory of Poland.
*** Options offered by the Polish government. Remote Poland, Poland Req. VR-118589 Manual Testing Cross Industry Solutions 06/07/2026

What are your monthly gross salary expectations? AED