OT Network & Security Architect

We are seeking an experienced and driven OT Security & Network Architect to help our clients secure and optimize their industrial network environments. If you have a passion for OT security, deep technical expertise, and a “can-do” mentality, this could be your next challenge. At spotit, you will protect the digital backbone of industrial processes that keep our economy running.

What will you be doing

As an OT Security & Network Architect at spotit, you will design, implement, and improve secure operational technology (OT) network infrastructures. Your work will ensure resilience and security in critical industrial processes. You will:

• Analyze and design robust OT security solutions tailored to client environments.
• Collaborate closely with clients and internal teams to assess and mitigate risks.
• Bridge the gap between IT, OT, and management for secure and compliant operations.
• Lead projects from concept to implementation with a focus on quality and customer satisfaction.
• Stay ahead of trends and emerging threats in OT security.
• Conduct OT security assessments and clearly communicate findings.
• Support pre-sales activities, technical workshops, and demonstrations.
• Assist operational teams during incidents with guidance and expertise.

A day in the life of an OT Network & Security Architect

Imagine starting your day reviewing the latest industrial threat intelligence while enjoying coffee in the spotit office. You hop into a workshop with an energy sector client to design a secure network segmentation strategy for their smart grid infrastructure.

The afternoon finds you analyzing the OT network and security risks for a manufacturing facility and creating a roadmap for the IT and OT team to build a more resilient infrastructure.

You finish the day preparing a proposal for a new IIoT security project, knowing your work safeguards not only data, but critical infrastructure powering communities.

At spotit, every day is about making industrial environments safer — and every solution you deliver has a tangible impact on society.

Your profile

• Experience: 5+ years in network and security architecture, ideally within OT environments.
• Industry knowledge: exposure to at least one of these verticals is a plus:
• Energy (smart grids, substations)
• Port & logistics (Straddle carriers, WMS/TPM systems, TOS)
• Manufacturing (PLC/SCADA/MES integration, IIoT)
• Chemical/Pharma (GxP, validation)
• Technical skills:
• Industrial network architecture (Layer 2/3, VLANs, segmentation, routing, redundancy topologies).
• Integration of firewalls with IDS/IPS for OT environments.
• Expertise with NGFW (Palo Alto Networks, Fortinet, Cisco, Check Point).
• Zone-based firewalling (Purdue model, IEC62443).
• OT protocols: Modbus, DNP3, OPC UA, Profinet, EtherNet/IP.
• Network sniffing tools: Wireshark/tcpdump, WinDump.
• Securing IIoT and hybrid cloud-edge environments.
• OT/ICS Knowledge:
• SCADA, PLCs, RTUs, HMIs.
• Asset discovery, baselining, anomaly detection.
• Segmentation for OT/ICS (Firewall, ACLs, pVLAN, Security Group Tagging).
• Air-gapped networks and legacy systems.
• Soft skills:
• Strong presentation and stakeholder management skills.
• Solution-oriented, pragmatic, hands-on mindset.
• Experience leading migrations, segmentation projects, incident response, compliance audits.
• Languages: fluent in Dutch and English.
• Mobility: willing to work on-site in Belgium and internationally.
• Certifications (nice to have): ISA/IEC 62443 series, CISSP, CCSP, CCIE Security, GICSP, CompTIA Security+, Network+.

"At spotit, every project feels like a mission — bringing IT & OT teams together, securing critical industrial systems and keeping processes running safely. It’s rewarding to know that our work directly impacts the safety and efficiency of essential services. If you love challenges and making a real difference, this is where you want to be."

— Erik De Nert, Head of OT

Our offer

Match made in heaven? We reward that!

• Competitive salary: enhanced with numerous benefits.
• Company car with fuel card: so you’re covered on the road.
• Hybrid work environment: avoid traffic jams.
• Continuous learning opportunities: a wide range of training options to keep you growing.
• Legendary team-building activities: quarterly fun events that have become the stuff of spotit legends.
• A passionate team of experts: ready to share their knowledge and passion for what they do best.

Interested?

Ready to become a spottee? Apply now and we’ll soon meet up for a coffee!