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OT Network Architect
  • Stargard
OT Network Architect
Stargard, Stargard, West Pomeranian Voivodeship, Polska
Sii Sp. z o.o.
5. 9. 2025
Informacje o stanowisku

OT Network Architect

Miejsce pracy: Szczecin

Technologies we use

Expected

  • LAN
  • WAN
  • VLAN
  • SCADA
  • PLC
  • TCP/IP
  • Firewalls

Optional

  • Microsoft 365

About the project

We are currently looking for an experienced OT Network Architect to join a strategic, large-scale project for a global leader in the energy sector.

This role offers a unique opportunity to take part in the design of OT network architecture and the segmentation of IT and OT networks across approximately 70 manufacturing sites worldwide. You will play a key role in shaping the security and connectivity landscape of industrial environments on a global scale.

Your responsibilities

  • Design and develop logical and physical network architecture documentation to support IT/OT network segmentation across global industrial sites
  • Create and maintain High-Level and Low-Level Design (HLD/LLD) architecture documents
  • Lead the design and deployment of OT network solutions in complex, multi-site environments
  • Apply knowledge of networking fundamentals and segmentation principles to design secure and resilient infrastructures
  • Identify and implement appropriate technologies to support evolving business and operational needs
  • Ensure alignment of OT network designs with broader IT infrastructure and cybersecurity strategies
  • Proactively identify risks and define mitigation strategies, including recommending suitable security controls for critical systems
  • Collaborate with cross-functional teams to integrate OT systems such as SCADA, DCS, and PLCs into secure network architectures
  • Maintain a holistic approach to network design, balancing availability, security, and industrial operation requirements
  • Work independently and take ownership of assigned tasks, ensuring high-quality, timely delivery of solutions

Our requirements

  • Background in creating Logical and Physical Design documents to support IT/OT Network Segmentation
  • Proven track record in developing and updating High-Level and Low-Level Design (HLD/LLD) Architecture Documents
  • Extensive OT Network expertise with solid knowledge of networking fundamentals and segmentation
  • Hands-on practice in architecting and deploying global solutions within complex environments
  • Familiarity with existing, new, and emerging technologies, with the ability to apply them to business designs and models
  • Solid understanding of broader Infrastructure and Security domains
  • Self-motivated, capable of working independently, taking initiative, and delivering results without constant oversight
  • Focused on a holistic approach, considering unique industrial constraints to balance security, availability, and operational requirements
  • Skilled in developing risk mitigation strategies and recommending appropriate security controls to safeguard critical assets
  • Practical exposure to operational technology systems in industrial environments (SCADA, DCS, PLCs, and other control systems)
  • Deep understanding of networking concepts, protocols, and architectures, including TCP/IP, subletting, routing, switching, VLANs, firewalls, and segmentation principles
  • Fluent Polish and residing in Poland required

What we offer

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 60M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

Recruitment stages

  • Send your CV
  • Talk to us about your expectations
  • Learn more about our projects and choose the best
  • Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.

The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment. In a survey, as many as 90% of our employees responded that Sii is a great place to work, and 95% of them think we have a great atmosphere here.

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