IIoT L2 Support Engineer: Manual Testing & Diagnostics

Luxoft Poland; Poland; On-site; PLN 140,000 - 220,000; Full time

Benefits offered by this job

MyBenefit program

LuxTalent platform

Internal Mobility program

Well-being program

Employee assistance program

Job summary

Luxoft Poland is seeking an experienced L2 support engineer to monitor and troubleshoot a hybrid edge-to-cloud diagnostic system. You will perform root-cause analysis, end-to-end diagnostics, and contribute to release validation through manual testing, with a focus on industrial protocols and telemetry pipelines.

The role requires hands-on Linux troubleshooting, SQL/REST API work, and strong communication to maintain clear support documentation and incident reports for continuous improvement.

Qualifications

• At least 4 years of experience in L2 support, technical operations, systems integration, industrial software support, or a comparable role.
• Experience with edge systems and cloud-hosted applications.
• Experience with telemetry, time-series data, and IIoT data pipelines.
• Hands-on knowledge of MQTT, Modbus, or similar industrial protocols.
• Strong Linux troubleshooting and log-analysis skills.
• Experience with SQL, databases, REST APIs, frontend and backend troubleshooting.
• Experience with manual functional and integration testing.
• Strong problem-solving, communication, documentation, and reporting skills.
• Degree or equivalent practical experience in automation, electrical engineering, control systems, or a related discipline.

Responsibilities

• Fleet monitoring: Monitor the health, availability, connectivity, and performance of edge systems and central cloud applications.
• L2 technical support: Investigate issues reported by monitoring systems, sites, customers, or L1 support.
• Root-cause analysis: Analyse logs, metrics, telemetry, services, databases, APIs, and network connections to identify and resolve problems.
• End-to-end diagnostics: Trace telemetry from devices and gateways through edge and cloud services to dashboards and reports.
• Issue escalation: Escalate unresolved problems or software defects to development/L3 with logs, reproduction steps, technical findings, and impact information.
• Documentation and reporting: Maintain support records, troubleshooting procedures, fleet-health reports, and incident summaries.
• Release validation: Dedicate approximately 30% of the role to manual functional, integration, and regression testing of new features and support software releases.

Skills

L2 support experience

Technical operations

Systems integration

Industrial software support

Edge systems experience

Cloud-hosted applications

Telemetry and IIoT data pipelines

MQTT/Modbus protocol knowledge

Linux troubleshooting

SQL & REST APIs

Manual testing

Education

Degree or equivalent in automation/electrical engineering/control systems

Tools

MQTT

Modbus

SQL

REST APIs

Linux

Job description

Luxoft Poland is seeking an experienced L2 support engineer to monitor and troubleshoot a hybrid edge-to-cloud diagnostic system. You will perform root-cause analysis, end-to-end diagnostics, and contribute to release validation through manual testing, with a focus on industrial protocols and telemetry pipelines.

The role requires hands-on Linux troubleshooting, SQL/REST API work, and strong communication to maintain clear support documentation and incident reports for continuous improvement.