OT Penetration Tester - Wireless GSM RF Mesh

Global Software Solutions Group

Dubai, UAE

fulltime

Mid-Senior

3 months ago

SEMVAT

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Role Overview

We are looking for a highly specialised

Ot Penetration Tester

with strong experience in

wireless communication networks (GSM and RF Mesh)

within

Ami And Smart Metering Environments

This role focuses on

black-box security testing of OT networks

, validating communication flows, resilience, and protocol-level vulnerabilities across large-scale distributed infrastructure.

• Wireless OT Penetration Testing (Core)

Perform black-box penetration testing on RF Mesh and private GSM networks in AMI environments
Simulate real-world attack scenarios without access to internal system logic
Test communication between smart meters, concentrators, and head-end systems

• Functional & Protocol Validation

Validate input/output behaviour using:
+ Meter readings
+ Commands
+ Alerts / alarms
Verify expected responses such as:
+ Data acknowledgements
+ Error handling
Work with protocols:
+ DLMS/COSEM
+ Wireless M-Bus

+ 902-928 MHz (RF Mesh)

+ GSM spectrum

• Security & Data Transmission Testing

Analyse encrypted communication flows (without decryption)
Identify vulnerabilities in:
+ Authentication
+ Data integrity
+ Transmission security
Ensure compliance with OT communication standards

• Performance & Scalability Testing

Conduct stress testing for:
+ High-volume meter data transmission
+ Large-scale AMI deployments
Evaluate:
+ Latency
+ Throughput
+ Network congestion handling

Mandatory Skills (Non-Negotiable)

Strong experience in OT Security / ICS environments
Hands-on wireless penetration testing (GSM / RF Mesh)
Experience with AMI / Smart Metering systems
Knowledge of:
+ DLMS/COSEM protocol
+ Wireless M-Bus
Understanding of:
+ RF communication (frequency bands, interference, propagation)
+ Mesh network architecture (multi-hop networks)
****Good to Have****
Experience with SCADA / ICS security testing
Knowledge of IoT / embedded device security
Familiarity with tools for RF analysis / wireless testing

Job Details

Role Level: Mid-Level Work Type: Full-Time Country: United Arab Emirates City: Dubai Company Website: https://www.gsstechgroup.com/ Job Function: Others Company Industry/

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