Senior OT Architect

Location:

Arnhem, Netherlands

Experience:

12+ years

Position:  Full-time

About the Role
We are seeking a highly experienced  Senior OT Architect  to lead the design, transformation, and governance of our Operational Technology (OT) landscape. The ideal candidate will bring deep expertise in OT/ICS systems, industrial automation technologies, and OT security standards, along with proven leadership across large-scale industrial environments.

10–15 years  of experience in OT engineering, OT security, or ICT architecture roles

Hands‑on experience working in large-scale industrial environments (manufacturing plants, utilities, power, oil & gas, transportation, etc.)

Demonstrated leadership in  OT transformation programs

Ability to develop and maintain enterprise OT  reference architectures, blueprints, and standards

Expertise in designing secure OT  zones and conduits  aligned with ISA/IEC 62443 principles

Strong documentation, communication, and cross‑functional collaboration skills

Key Responsibilities

Design high‑level and low‑level  OT architecture diagrams  across ICs, SCADA, DCS, PLC/RTU, and automation systems

Evaluate and implement  IT/OT convergence  solutions including identity management, asset visibility, patching, and remote access

Provide architectural guidance to OT engineering, operations, and security teams

Lead solution design for modernization of OT systems, including migration from legacy to secure industrial protocols

Establish and enforce standards for  OT configuration, patching, asset management, and backup/restore

Ensure compliance with relevant industry and regulatory standards such as  ISO 27001, NERC CIP, Pharma GxP, and Oil & Gas regulations

Maintain comprehensive documentation and architecture repositories for all OT systems

Evaluate and sign off on vendor solution architectures and design packages

Drive adoption of advanced OT technologies:  IIoT, Edge Computing, Digital Twin, AI/ML analytics

Assess cloud integration feasibility for OT data flows while maintaining safety and compliance

Lead  pilot projects and Proofs of Concept (POCs)  for new OT solutions

Required Technical Skill Set

Strong hands‑on experience with  ICS/OT technologies : PLC, SCADA, DCS, HMI, Historian systems

Deep understanding of  industrial communication protocols :
Modbus, OPC‑UA/DA, DNP3, PROFINET, Ether Net/IP

Knowledge of  ISA/IEC 62443  OT security standards

Broad exposure to industrial sectors such as manufacturing, utilities, power, oil & gas, transport, or similar

Language skills:  Fluent English ;  Dutch proficiency is a MUST .

Strong communication skills to bridge IT, OT, and business stakeholders

Ability to perform under high operational pressure in 24/7 industrial settings

Strong analytical and problem‑solving mindset

Why Join Us?

Opportunity to lead high‑impact OT modernization and digitalization initiatives

Work with cutting‑edge industrial technologies in a mission‑critical environment

Collaborative cross‑functional culture bridging IT and OT

Competitive compensation with growth opportunities

Tata Consultancy Services (TCS) is an equal opportunity employer. We truly believe that employing a diverse workforce is pivotal to our success. Please note, recruiting decisions are always based on applicant’s skills, competencies & experience and potential fitment to the available role.

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