Onectus

/ TEAMS · Specialist engineering · OPC UA

Hire OPC UA engineers for production systems.

Source engineers experienced in Industrial interoperability, OT integration and telemetry. for business-critical production systems, safe integrations and measurable technical ownership.

2,000+ engineers in our active talent network · Regional recruiters

/ SYSTEM STACK

ARCHITECTURE01

information modeling nodes

IMPLEMENTATION02

OPC UA client-server

DATA & INTERFACES03

subscriptions and events

RELIABILITY04

certificate trust

OPERATIONS05

PubSub transport

/ AVAILABLE TO HIRE

Specialist engineering profiles.

Profiles show the experience we can source. Individual candidate availability is confirmed after enquiry.

Ivana M.

OPC

Senior OPC UA Engineer

Inquire availability

10+ years of experience · Croatia

OPC UA Engineer with 10 years in production systems, focused on information modeling nodes and OPC UA client-server.

information modeling nodesOPC UA client-serversubscriptions and eventscertificate trustPubSub transport

Languages: Croatian, English B2+

Marko V.

OPC

Mid-level OPC UA Engineer

Available

3+ years of experience · Croatia

OPC UA Engineer with 3 years in production systems, focused on OPC UA client-server and subscriptions and events.

OPC UA client-serversubscriptions and eventscertificate trustPubSub transportindustrial gateway design

Languages: Croatian, English B2+

Ola K.

OPC

Mid+ OPC UA Engineer

Inquire availability

5+ years of experience · Poland

OPC UA Engineer with 5 years in production systems, focused on subscriptions and events and certificate trust.

subscriptions and eventscertificate trustPubSub transportindustrial gateway designinformation modeling nodes

Languages: Polish, English C1

Andrei D.

OPC

Senior OPC UA Engineer

Inquire availability

11+ years of experience · Romania

OPC UA Engineer with 11 years in production systems, focused on certificate trust and PubSub transport.

certificate trustPubSub transportindustrial gateway designinformation modeling nodesOPC UA client-server

Languages: Romanian, English B2+

/ Engineering teams

OPC UA — Technical sourcing matched to the actual system.

Onectus uses its active engineering network and regional recruiting partners to search against concrete systems, environments and responsibilities. We evaluate practical experience rather than treating a framework mention or certification as proof of delivery. Particular availability and engagement terms are confirmed after an enquiry. For this role, practical knowledge of information modeling nodes, OPC UA client-server, subscriptions and events helps define the engineering search.

/ Technical specializations

OPC UA — Six technical capabilities to assess

The right profile depends on your actual architecture, performance constraints, integration boundaries and operational responsibilities.

01 / 06

information modeling nodes

OPC UA responsibilities include information modeling nodes, related opc ua client-server, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

information modeling nodessubscriptions and eventscertificate trust
02 / 06

OPC UA client-server

OPC UA responsibilities include opc ua client-server, related subscriptions and events, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

OPC UA client-servercertificate trustPubSub transport
03 / 06

subscriptions and events

OPC UA responsibilities include subscriptions and events, related certificate trust, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

subscriptions and eventsPubSub transportindustrial gateway design
04 / 06

certificate trust

OPC UA responsibilities include certificate trust, related pubsub transport, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

certificate trustindustrial gateway designinformation modeling nodes
05 / 06

PubSub transport

OPC UA responsibilities include pubsub transport, related industrial gateway design, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

PubSub transportinformation modeling nodesOPC UA client-server
06 / 06

industrial gateway design

OPC UA responsibilities include industrial gateway design, related information modeling nodes, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

industrial gateway designOPC UA client-serversubscriptions and events

/ Project scenarios

OPC UA — Production problems the role can address

01

Connect legacy factory devices

Connect legacy factory devices. Define constraints around information modeling nodes, map dependencies and test how the proposed implementation behaves under real operating conditions.

02

Secure machine telemetry exchange

Secure machine telemetry exchange. Define constraints around opc ua client-server, map dependencies and test how the proposed implementation behaves under real operating conditions.

03

Diagnose stale subscriptions

Diagnose stale subscriptions. Define constraints around subscriptions and events, map dependencies and test how the proposed implementation behaves under real operating conditions.

04

Build a common equipment information model

Build a common equipment information model. Define constraints around certificate trust, map dependencies and test how the proposed implementation behaves under real operating conditions.

/ Practical evaluation

OPC UA — Evaluate real ownership, not keywords.

A senior engineering interview should surface directly relevant implementation details, debugging history and operational judgment.

  1. 01

    information modeling nodes

    Describe a production issue involving information modeling nodes and what evidence led to a fix.

  2. 02

    OPC UA client-server

    Which decisions around OPC UA client-server and subscriptions and events were you personally accountable for?

  3. 03

    subscriptions and events

    Describe a production issue involving subscriptions and events and what evidence led to a fix.

  4. 04

    certificate trust

    Which decisions around certificate trust and PubSub transport were you personally accountable for?

/ Sourcing process

OPC UA — From system brief to relevant engineering candidates

01 / 04

Clarify production context

Define platform versions, deployment constraints, traffic patterns, required integrations and ownership.

02 / 04

Activate relevant sources

Search the active network and partner channels for platform-specific engineering experience.

03 / 04

Review technical evidence

Discuss real systems, code or configuration decisions, troubleshooting and change control.

04 / 04

Agree on collaboration

Confirm role boundaries, location or remote access, availability, security and interviews.

Profiles, availability and engagement terms are confirmed for each request.

/ Questions

OPC UA — Questions before hiring

01Can you source OPC UA engineers with experience in information modeling nodes?

Yes. Tell us the relevant versions, operational environment and the responsibilities connected to information modeling nodes. We qualify hands-on experience during each search.

02Can the role cover OPC UA client-server and subscriptions and events?

These can be included when central to the project. We distinguish practical implementation work from general familiarity and ask about failure scenarios and testing.

03How is seniority assessed for OPC UA?

We look at production decisions, trade-offs, incident diagnosis, code or infrastructure ownership and the ability to explain decisions without relying on a technology checklist.

04How do we start a search for OPC UA?

Share your architecture, technical constraints, collaboration model and priorities. We can then discuss relevant sourcing channels, evaluation criteria and next steps.

/ Onectus · TEAMS

Describe the systems you operate.

Tell us the technology, production responsibilities, experience level and working model. We'll activate the appropriate engineering sourcing channels.

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