A senior, customer-oriented OT Security Architect / Consultant with strong expertise in industrial cybersecurity, secure architecture design, and advisory services for complex industrial environments. This role combines deep technical knowledge with consulting capabilities, helping customers assess, design, and evolve their OT cybersecurity posture in a pragmatic and operationally realistic way.

The OT Security Architect / Consultant acts as a trusted advisor for customers and internal teams, supporting both strategic initiatives and technical solution definition. They understand industrial processes, legacy constraints, operational risks, and cybersecurity best practices, and are able to translate them into scalable, maintainable, and secure OT environments.

This role goes beyond implementation and focuses on architecture, consulting, risk reduction, governance, and technical leadership across OT cybersecurity projects.

Core Responsibilities

OT Security Consulting & Advisory

Act as a trusted advisor for customers on OT cybersecurity topics:

Assess customer OT environments, cybersecurity maturity, and operational risks
Support customers in defining OT cybersecurity strategies and roadmaps
Conduct workshops, technical assessments, and advisory sessions
Identify security gaps and propose realistic mitigation strategies
Help customers balance cybersecurity, operational continuity, maintainability, and budget constraints
Provide guidance aligned with industrial best practices and regulatory requirements

Support customers in areas such as:

OT network segmentation and zoning
Secure remote access
OT visibility and monitoring
OT/IT convergence
Asset inventory and risk management
OT governance and cybersecurity maturity improvement

OT Security Architecture & Design

Design and define secure OT architectures for industrial environments, including:

Network segmentation aligned with Purdue / IEC 62443
Secure connectivity between OT, IT, DMZ, cloud, and remote systems
Firewall placement and rule design concepts
Industrial network topologies and trust boundaries
Secure infrastructure layouts for OT servers, applications, and virtualization platforms
High-availability and operational continuity considerations

Produce:

Architecture diagrams and technical documentation
High-level and detailed technical designs
Security recommendations and remediation plans
Technical standards and reference architectures

Risk Assessments & Compliance

Lead or support OT cybersecurity assessments, including:

OT risk assessments
Security posture reviews
Architecture reviews
Gap analyses against IEC 62443 or customer standards
Security improvement recommendations

Support customers in:

Defining remediation roadmaps
Prioritizing mitigation actions
Improving OT cybersecurity governance
Aligning with cybersecurity frameworks and standards

Technical Governance & Standards

Define and promote OT security best practices and architectural standards:

Ensure alignment with IEC 62443 and Purdue principles
Review and validate OT security designs and technical approaches
Support internal engineering teams with architectural guidance
Contribute to reusable methodologies, templates, and design patterns
Participate in internal capability development and knowledge sharing

Pre-Sales & Customer Engagement Support

Support pre-sales and business development activities from a technical perspective:

Participate in customer meetings and technical workshops
Help define solution scope and technical assumptions
Support proposal creation and effort estimation
Translate customer requirements into realistic technical solutions
Provide architecture guidance during bid and discovery phases

Act as the technical bridge between:

Customers
Sales teams
Delivery teams
OT engineers
IT cybersecurity teams

Collaboration & Leadership

Work closely with:

OT security engineers
Automation and control system specialists
IT security teams
Project managers
Sales and account teams
External partners and technology vendors

Provide:

Technical leadership during architecture and consulting activities
Mentorship for junior engineers or consultants
Guidance during critical project phases
Support during audits, design reviews, and customer escalations

Required Technical Expertise

Strong expertise in OT cybersecurity and industrial networking, including:

SCADA, PLCs, DCS, and industrial communication protocols
Purdue model and IEC 62443 concepts
Network segmentation and zoning
Firewall and DMZ architecture principles
Secure remote access solutions
OT monitoring and asset visibility solutions
Industrial network design and restructuring
OT/IT integration concepts

Hands-on or design-level experience with:

Fortinet solutions
Cisco industrial networking
Palo Alto firewalls
Nozomi Networks or similar OT monitoring platforms
Active Directory in hybrid IT/OT environments
Virtualization and server infrastructure concepts

Good understanding of:

Continuous monitoring technologies
Industrial operational constraints
Risk management methodologies
Secure architecture principles

Soft Skills & Mindset:

Strong analytical and problem-solving mindset
Able to understand both technical and operational realities
Excellent communication and consulting skills
Comfortable engaging with technical and non-technical stakeholders
Pragmatic and solution-oriented approach
Structured thinker with strong documentation capabilities
Collaborative and team-oriented mindset
Able to influence decisions through expertise and credibility
Customer-focused and business-aware

Language & Location (France)

French: native or near-native level (mandatory)
English: professional working proficiency (mandatory)
Preferred location: Lyon or nearby

Availability for occasional travel within France and Europe is expected

Join AG Solution Where Talent Shapes Industry 4.0

At AG Solution, we build intelligent solutions for the process industry, combining automation, process control, data management, and MES/MOM systems to help manufacturers reach operational excellence.

Now part of the Saphir Group, we are one of Europe’s leading Industry 4.0 partners, with more than 400 engineers and consultants working across Europe, the UK, and the US.

Driven by People. Powered by Technology.

Our success starts with our people. We invest in growth through continuous learning, mentorship, and our AG Academy, ensuring every colleague has the opportunity to develop their skills and career. AG Solution is an Equal Opportunity Employer.

We believe that innovation happens when people feel trusted, connected, and inspired.

A Global Team with a Human Touch

With offices in over 15 cities worldwide, we bring together diverse expertise and perspectives — from Antwerp to Barcelona, Rotterdam to Lyon, and New York to Krakow.

At AG Solution, you’ll work on meaningful projects that drive efficiency, sustainability, and digital transformation for leading manufacturers worldwide.

Built to Scale. Driven by Talent.

Ready to shape the future of industry?
Explore our opportunities and grow with a team that’s redefining what’s possible.

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