From the creators of node-opcua
OPC UA expertise, straight from the people who built the stack.
Architecture, information modeling, interoperability, performance, security — get unstuck fast with consulting from the engineers who maintain node-opcua and sit on the OPC Foundation.
Consulting for every OPC UA challenge
Industrial operators
Modernizing plants and connecting production lines to OPC UA.
OEMs & machine builders
Adding OPC UA connectivity to your equipment.
Software & SaaS teams
Designing OPC UA into your product from the ground up.
Integrators
Solving complex interoperability challenges across multi-vendor environments.
Deep OPC UA expertise, applied to your project
- Architecture & design review
Validate your OPC UA architecture before you build: server topology, security model, redundancy, scalability.
- Information modeling
Design clean, reusable address spaces and implement OPC Foundation companion specs correctly the first time.
- Interoperability audits
Diagnose why two systems won't talk. We test against real PLCs — Siemens, Rockwell, B&R, Omron — and clients.
- Security & compliance
Certificates, GDS, role-based access — get your OPC UA security architecture right for IEC 62443 and NIS2.
- Performance & troubleshooting
Track down latency, memory and stability issues in production OPC UA deployments.
- Technology selection & POC
Choose the right OPC UA stack for your constraints and prove it with a focused proof of concept.
- Training & enablement
Hands-on OPC UA workshops on information modeling, security, and node-opcua SDK development.
Why Sterfive
- We maintain node-opcua — the most widely used open-source OPC UA stack, with 170K+ downloads/month.
- OPC Foundation member — aligned with the standard, not just using it.
- Vendor-neutral advice grounded in real deployments, not theory.
- One team, end to end — we can implement what we recommend. See Development →
From diagnosis to results, no lock-in
- Discovery call
Tell us about your project, your constraints and your timeline. We'll assess how we can help and propose a clear next step.
- Scoped engagement
Whether it's a one-day audit, a two-week sprint or a standing retainer, we define the scope, deliverables and timeline upfront.
- Deliverables & recommendations
You receive actionable reports, architecture diagrams, tested configurations and clear recommendations — not slide decks.
- Optional implementation
Need us to build what we recommended? Our development team can take over seamlessly.
Ready to get started?
Stuck on OPC UA? Talk to the people who wrote the stack.
Book a free discovery call with our engineering team, or explore our products to see what we've built with the same expertise we bring to consulting.
Whether you need a one-hour architecture review or a multi-month engagement, we're ready to help. Reach out and we'll get back to you within one business day.