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Nexify

Nexify

TunisiaPublished: 30 Dec 2025

AUTOM-01 - Industrial Control System Upgrade: Architecture Redesign and Cybersecurity Compliance

  • Internship
  • 4-6 months
  • On-site
  • Deadline: 13 Jan 2026
  • Industrial Automation
  • DCS
  • SCADA/Supervision
  • PLC/API
  • startup-ecosystem
  • OPC UA
  • MODBUS/CAN/RS485
  • DNP3
  • ICS Cybersecurity
  • IEC 62443
  • System architecture
  • Reverse Engineering

Job description

Description: Comprehensive review and analysis of an existing real-case industrial control system, including reverse engineering and reconstruction of engineering documentation. Design a new architecture for the upgraded system, integrate new units, and ensure compliance with IEC 62443 cybersecurity requirements to deliver a more secure and robust control infrastructure.

Key missions:

  • Research and document major industrial automation technologies and protocols: SCADA, DCS, RTU, PLC, OPC, Modbus, DNP3, and related standards.
  • Analyze the existing DCS: architecture, control strategies, philosophy, synoptics.
  • Perform reverse engineering and rebuild documentation (architecture, logic diagrams, functional descriptions).
  • Propose new control logic and a migration plan for the system upgrade.
  • Integrate IEC 62443 cybersecurity measures into the future architecture.

Why join us:

  • Work on real industrial systems with tangible operational impact.
  • Gain hands-on experience in DCS/SCADA technologies, automation protocols, and ICS cybersecurity.
  • High-value project combining reverse engineering, system design, and modernization.
  • Mentorship by experienced engineers to support technical and professional growth.
  • Contribute to secure migration of critical industrial infrastructures.

📧 Pour postuler: careers@nexifyas.com