About the Position

We are seeking a Technical Support Engineer – L2 with strong manual testing experience to join our team in Remote Poland, focusing on IoT and IIoT systems.

Responsibilities

Ensure the reliability and quality of telemetry-driven IIoT systems through advanced troubleshooting, manual testing, and protocol-level diagnostics across edge and cloud environments.
Perform second-line support and quality validation of IoT and IIoT systems handling real-time telemetry data.
Investigate complex issues escalated from L1, performing root-cause analysis using logs, metrics, telemetry streams, and monitoring tools.
Diagnose problems across edge and cloud environments, often running on Linux-based systems.
Validate fixes and configuration changes before production release and collaborate closely 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.
Work with industrial and IoT protocols such as Modbus and MQTT, including validation of payloads, connectivity, and reconnection behavior.
Use monitoring and diagnostic systems to detect latency, data loss, or anomalies in real-time systems.

Requirements

Preferably 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 troubleshooting experiences to analyze logs, metrics, and protocol-level issues.
- Understanding of IIoT architectures and data pipelines.
- Experience with databases (SQL / NoSQL / Time Series).
- Linux knowledge.

Nice to Have

AWS Green Grass.
CI/CD (Jenkins).

Languages

English: B2 Upper Intermediate.

We Offer

Relocation options (not available for all positions).
Experience in an international environment.
Cross-cultural experience.
Feedback culture.
Regular appraisals.
Annual holiday: 20 or 26 days (depending on seniority).
Occasional leave: 1 or 2 days (depending on circumstances).
Child care leave: 2 days or 16 hours per year.
Absence due to force majeure: 2 days or 16 hours per year.
Maternity Leave: 20 weeks.
Parental Leave: 41 weeks.
Paternity Leave: 14 days.
Expert-led tech courses.
Internal instructor-led soft skills courses.
Comprehensive in-house self-learning resources.
Access to external self-learning libraries.
Cloud Programs.
Custom Learning Programs.
Leadership Programs for Managers.
Multisport card.
LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.
One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners.
Preferential banking offer.
Preferential car leasing offer.
Cafeteria program discounts.
Luxoft Social Benefit Fund: sport and recreation benefits.
Private Healthcare Insurance with unlimited access to specialists.
Full dental support.
Travel Insurance.
Possibility to add private healthcare coverage for family members at the corporate rate.
Life insurance at the corporate rate for employees and family members.
Reimbursement for corrective glasses.
Many fun social activities organized by the Luxoft team.
Online entertainment events for the whole company and local team events.
A workplace where you’re treated with respect within a multicultural team.
Rotation between projects and accounts.
New career opportunities.

About the Company

Luxoft is a global provider of digital transformation and technology services. We work with leading companies to deliver innovative solutions that drive business success.

Technical Support Engineer – L2

Job description