Tarun Sharma, Developer in London, United Kingdom
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Tarun Sharma

Verified Expert  in Engineering

Enterprise Architect and Developer

London, United Kingdom
Toptal Member Since
March 13, 2023

Tarun is a software architect who has worked with Fortune 500 clients and enterprise-level companies like Nestle and Deloitte. He is also a result-oriented Citect SCADA Certified Engineer experienced in leading industrial control systems, SCADA, energy management systems (EMS), and critical infrastructure solution strategy development. As an IRCA Certified ISO 27001 Lead Auditor, Tarun has expertly consulted and audited based on the said ISO framework.


Wagner-Group - Main
Manufacturing, SQL, Industrial & Manufacturing, Industrial Engineering
SCADA, Vulnerability Management, System-on-a-Chip (SoC), SharePoint...
IoT Security, Splunk, Okta, Identity & Access Management (IAM), Python...




Preferred Environment

Supervisory Control & Data Acquisition (SCADA), PLC, IoT Security, Cybersecurity

The most amazing...

...thing I've developed is a Python project to monitor operational technology (OT) communication using Tshark and show data on the Splunk dashboard.

Work Experience

Industrial Engineer

2023 - 2024
Wagner-Group - Main
  • Created data logging from Rockwell PLC and RSView to SQL and built reporting for the client.
  • Developed alarms and logged them from SCADA systems.
  • Handled recipe management from the SCADA System to the SQL database.
Technologies: Manufacturing, SQL, Industrial & Manufacturing, Industrial Engineering

Digital and OT Cybersecurity Expert

2022 - 2023
  • Employed the IT-OT convergence strategy, including network segmentation, for all manufacturing sites of Nestle.
  • Managed the plant integration with cloud technology and used various cloud capabilities.
  • Handled the deployment of OT monitoring solutions like Claroty and Armis.
  • Created technical guidelines documents for network device operation procedures and security recommendations.
Technologies: SCADA, Vulnerability Management, System-on-a-Chip (SoC), SharePoint, Technical Writing

IoT and OT Senior Advisor

2019 - 2021
  • Handled a Python project to ingest data from different OT devices to Splunk using Tshark as an agent to gather all network captures.
  • Performed risk assessments for Fortune 500 oil and gas clients based on the NIST 800 framework.
  • Prepared operations security blueprint guidance for a Fortune 500 pharma client from scratch.
  • Created use cases for IoT Security using Raspberry Pi, Arduino, and programmable logic controllers (PLC).
  • Audited clients for OT manufacturing networks based on ISO 27001 frameworks.
  • Created incident response procedures and tabletop exercises with site teams.
Technologies: IoT Security, Splunk, Okta, Identity & Access Management (IAM), Python, Technical Writing, Azure, Human-machine Interface (HMI), Linux, Internet of Things (IoT)

Associate Lead

2011 - 2019
Schneider Electric
  • Handled the PLC and SCADA architecture development for critical infrastructure.
  • Performed historian configuration development and report configurations.
  • Worked on sensors, variable-frequency drives, and other automation solutions.
  • Provided technical support for clients on systems engineering, which included project development and troubleshooting.
  • Prepared technical notes, procedure documents for device configurations, and process flows.
  • Gained experience working on the Wonderware platform and products like InTouch SCADA, Historian, Cloud Historian, etc.
Technologies: PLC, SCADA, DevOps, Azure, Allen-Bradley PLCs, Modbus Protocol, Python

Deputy Manager

2010 - 2011
  • Commissioned Honeywell Distributed Control Systems for a 5,000 tons-per-day kiln and cooler project for cement manufacturing.
  • Handled the vertical coal mill installation and programming of PLC and SCADA for the control.
  • Oversaw the plant maintenance activities of a large cement manufacturing plant.
Technologies: Electrical Engineering, Siemens PLC

SCADA Development

Developed SCADA and PLC code for the Indian Space Research Organisation for critical operations during launch operations. We created the logic and handled the SCADA development for this project, which had a critical update time of fewer than 100 milliseconds.

EMS Deployment and Reporting

Worked on the Citect SCADA software for collecting data from Schneider Electric's PM series energy meters and creating visualizations. I also developed reports for daily energy consumption and extracted relevant information for the data.

Azure Integration from Schneider M340 PLC

I integrated Schneider PLC model M340 to send data to the Azure IoT hub. For this project, I used some middle solution with NodeRed to send all the PLC data to the cloud using MQTT/HTTPS communication. I used this data for analysis.
2002 - 2006

Bachelor's Degree in Electrical Engineering

Rajasthan University - Alwar, Rajasthan, India


Certified Information Security Manager (CISM)



IEC 62443 Cybersecurity Expert



IRCA Certified ISO 27001 Lead Auditor



Citect SCADA Certified Engineer

Schneider Electric


Train-the-Trainer Certification

Schneider Electric


Splunk, Siemens PLC, Vijeo Citect, Azure IoT Hub, Node-RED

Industry Expertise



Azure, Linux, Raspberry Pi, SharePoint


Python, Python 3, SQL




Supervisory Control & Data Acquisition (SCADA), PLC, Control Systems, Technical Writing, Human-machine Interface (HMI), Allen-Bradley PLCs, Modbus Protocol, Internet of Things (IoT), IoT Security, Fuzzy Logic, Vulnerability Management, System-on-a-Chip (SoC), Okta, Identity & Access Management (IAM), IT Audits, SCADA, Electrical Engineering, Energy Monitoring, Networking, Manufacturing, Industrial & Manufacturing, Industrial Engineering, ICS, OT Security, IT Governance, Risk Management, Security Program Development

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