Profile & Experience

Manufacturing expertise meets industrial networking and OT cybersecurity.

My portfolio direction connects more than 20 years of safety-critical manufacturing, risk management, change control, and engineering governance with practical industrial networking and Network Security Engineer development.

Raf Jablonsky profile photo

Raf Jablonsky

Senior Manufacturing Engineer developing Industrial Networking & OT Cybersecurity capability.

20+Years engineering
OTSecurity direction
Six SigmaBlack Belt
PythonTools & analysis

Engineering discipline applied to connected industrial environments.

My networking work is the practical extension of a long career in safety-critical manufacturing and product engineering. I am developing the capability to understand, design, analyse, and protect the industrial networks on which modern production depends.

The objective is not to leave manufacturing engineering behind, but to apply its discipline — risk control, traceability, reliability, and managed change — to connected industrial environments.


Industrial networking and OT cybersecurity work

My current practical work combines Cisco routing and switching, network segmentation, Wireshark packet analysis, Python and Pandas automation, virtual network laboratories, configuration auditing, and risk-based engineering methods.

Industrial network design

VLANs, 802.1Q trunks, inter-VLAN routing, Layer 2/Layer 3 EtherChannel, STP, RSTP/PVST+, HSRP, static routing, OSPF, ACLs, DHCP security concepts, and resilient campus/industrial architectures.

Packet analysis and automation

Wireshark traffic inspection, structured packet-data analysis, Python, Pandas, Netmiko, Paramiko, CSV workflows, repeatable reports, configuration auditing, and data validation.

OT security and governance

IT/OT segmentation, industrial-network resilience, defence-in-depth concepts, ISA/IEC 62443 interpretation, FMEA, FRACAS, root-cause analysis, and risk-based decision making.

Virtual labs

Practical design and troubleshooting laboratories using GNS3, EVE-NG, or equivalent platforms to explore network architecture, segmentation, routing, switching, and traffic behaviour.


Career journey

Current direction

Senior Manufacturing Engineer developing OT cybersecurity capability

Extending more than 20 years of safety-critical engineering, risk management, configuration control, traceability, process governance, and cross-functional technical approval into industrial networking and OT cybersecurity.

Defence / aerospace

Product Engineering and high-reliability systems

Supported development, prototyping, testing, and troubleshooting of high-reliability products, including Ethernet-enabled slip-ring technology and associated data-transfer interfaces. Applied Six Sigma, FRACAS, and root-cause analysis methods to reliability and design problems.

Automotive safety

Manufacturing Engineer / Process Engineer

Supported automotive airbag-system manufacturing where dependable performance relied on tightly controlled production processes, risk reduction, standardisation, and production-system reliability.


Education and professional achievements

Professional achievement

Certified Six Sigma Black Belt, supporting structured problem solving, statistical thinking, variation reduction, and evidence-based improvement.

Postgraduate study

Postgraduate of Total Quality Management, School of Economy and Administration, Kielce, Poland.

Master's degree

Master of Mechanical Engineering, Manufacturing Technology, University of Technology, Czestochowa, Poland.

Bachelor's degree

Bachelor of Science, R&D Mechanical Engineering Technology, University of Technology, Czestochowa, Poland.


Portfolio evidence

The projects in this portfolio are designed to make the career transition visible through practical evidence.

Engineering Change Request Platform

Controlled OT and engineering changes, approvals, traceability, workflow governance, and management reporting.

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Packet Insight

Packet-data analysis, validation, scientific PCAP analytics, and professional network reporting using Python and Pandas.

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NetSafe Auditor

Future network-device connection, configuration auditing, baseline comparison, and structured reporting with Python and Netmiko.

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Industrial Network Lab

Segmented IT/OT architecture, routing, switching, resilience, packet capture, and risk assessment.

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Network Security Engineer strategy

This profile supports a clear long-term direction: build credibility as a Network Security Engineer with a strong OT and manufacturing systems differentiator.

  • Manufacturing credibility: safety-critical engineering, risk control, traceability, and change management.
  • Networking capability: routing, switching, segmentation, redundancy, labs, and packet analysis.
  • Security relevance: OT governance, configuration control, visibility, evidence, and secure change.
  • Communication: portfolio case studies and LinkedIn articles that translate technical work into readable professional evidence.