
OPC UA Experts in Germany
for connected industrial systems, matched in minutes with vetted freelance professionalsHire experts who connect machines, production lines and business systems with OPC UA, companion specifications and industrial data models. Work with professionals experienced in secure information exchange, gateway integration and shop-floor connectivity, matched quickly with vetted and available freelancers.
Meet FRATCH Experts in Germany, who have recently used OPC UA
Jörg T.
Last position:
Consultant, Requirements Engineer and Database Expert
Project – Evaluation and development of databases for a new product line for a measuring equipment manufacturer
- Current-state analysis
- Requirements analysis of the data storage layer
- Writing benchmark tests
- Design of the new database schema
- Database migrations
- Development of audit logging and Part11
- Creation of backup and recovery concepts
- Design of the persistence layer API
- Writing unit tests
- Creating requirements in Azure
Tools: C#, Visual Studio 2022, Azure DevOps, SonarQube, Git, RestSharp, WebServer, PostgreSQL, MS SQL, SQLite, MinIO, Podman, Docker, DataGrip, SQL Management Studio, HeidiDB, pgAdmin
Loic N.
Last position:
Senior System Engineer at AG Solution
- Create and lead roadmap forecasting of support opportunities, including colleague training, process design and improvement, and new hire onboarding.
- Collaborate seamlessly with cross-functional teams including Professional Services, Support, Product, Sales, and Solution Engineering.
- Manage business and financial KPIs in alignment with overall business objectives.
- Industrial IT & Data Integration: Implement, configure, and integrate OT/IT systems and data flows, connecting control-layer sources (DCS, PLC, SCADA) to historians, data platforms, and enterprise systems through APIs and standard interfaces.
- AVEVA PI & Historian: Configure, maintain, and extend AVEVA PI (PI Data Archive, Asset Framework, interfaces/connectors) to capture, contextualize, and serve real-time and historical operational data.
- Alarm Management: Support and optimize alarm management systems – e.g. Honeywell Alarm Management – including alarm rationalization, classification, and the analysis of alarm performance, critical alarms, and alarm floods.
- Connectivity & Protocols: Set up and troubleshoot industrial connectivity using OPC UA and OPC A&E, including the configuration of tunnelers / wrappers to bridge OT data sources securely and reliably.
- Production Data Flow: Ensure seamless, secure, and well-structured data flow across the industrial IT landscape, transforming raw operational data into meaningful information for operations and decision-making.
- System Support & Troubleshooting: Provide ongoing support for OT/IT applications, troubleshooting issues across networks, software, and data integrations to keep systems running efficiently.
- Knowledge Management & Best Practices: Contribute to internal documentation, best practices, and troubleshooting guides, and help continuously improve how we deliver industrial IT and data solutions.
Tools & Software: Aveva PI, Salesforce, Active Directory, Microsoft Dynamics 365, Jira, Microsoft, Scrum, DevOps, Docker, CI/CD, Jenkins, GitHub.
Yusuf C.
Last position:
Senior Software Engineer at LeiKon GmbH
- Development of scalable backend applications with C#/.NET and Java
- Design and implementation of distributed microservice architectures
- Development and integration of REST APIs for industrial applications
- Development of modern web applications with React, Angular, and TypeScript
- Implementation of MQTT-based communication solutions
- Integration of industrial protocols such as OPC UA and Modbus TCP
- Development of batch, process control, and HMI components
- Containerization and deployment of applications with Docker
- Conducting code reviews and supporting architecture decisions
- Close collaboration with Product Owners, QA, and interdisciplinary teams
- Analysis of business requirements and implementation of technical solutions
- Further development of existing software architectures with a focus on maintainability and performance
Technologies: C#, .NET, ASP.NET Core, Java, C++, React, Angular, TypeScript, Vue.JS, MQTT, OPC UA, Modbus TCP, Docker, GitLab, MariaDB, MySQL, Linux
Robert K.
Last position:
Interim Manager | Group Manager in the IT Operations & Digitalization division „Databases, Operations & Support" (DOS) at Landwirtschaftliche RentenBank
- Functional management and further development of a team of 28 IT employees (internal & external) in the areas of HelpDesk / HelpLine, RHEL (Red Hat), MUREX (trading system & applications), SAP basic operations
- Management of external service providers (including FI-TS for SAP basic operations)
- Personnel, resource and budget planning for the IT department and projects
- Introduction and establishment of regular communication formats (regular meetings, team and cross-departmental meetings)
- Ensuring application operations in a hybrid environment (Windows / Linux with database and web/application servers)
- Support for transformation projects to modernize the application landscape (e.g. DevOps approaches)
- Building and introducing digital IT procurement for hardware & software (e.g. with DELL)
- Development and management of the „IT Operations DOS" department based on the company strategy
- Preparation of management reports & decision papers on IT projects, optimization potential and automation opportunities
- Representing the department in Rentenbank committees and ensuring regulatory compliance (BaFin §44, DSGVO, BSI, MaRisk)
Ornel Franck W.
Last position:
Sales Partner at ERGO PRO
- Industry: Insurance, Trade, IT
- Customers & Projects: Consulting and selling insurance and similar services
- Main tasks: Insurance consulting (health insurance, retirement planning, wealth building); commercial services, inside and field sales; sales data analysis and forecasting; customer consulting and support; opening a new sales headquarters for private and business customers; business development & innovation management; business use case development; process optimization; stakeholder management; team leadership and training; preparation and delivery of trainings;
- Technologies used: Microsoft Office 365, Microsoft Teams, Jira, Draw.IO, Camunda 8, Java (8, 17,21,25), Git, Spring Boot, Spring Batch, Spring Data REST, Spring Web, Spring Security, J-Unit, Playwright, Lombock, Vaadin, H2, PostgreSQL (16, 17 18), pgAdmin, Docker, LLMs, JasperSoft Studio, JasperReports
Jens R.
Last position:
Platform Architect & Senior Developer at Direct client, industrial measurement technology, medium-sized company
- Technical leadership across hardware, firmware, and software teams; scope: hardware/firmware team (4 people) and leadership group (5 people)
- Consolidated and documented a product family that had grown over more than 15 years and aligned it with CRA compliance — from the bare-metal I/O module to the cloud interface.
- Provided the most important customer product with the essential requirements and architecture documentation within two months — for a firmware landscape that had grown over more than 15 years. It now supports the customer’s modernization strategy.
- Established a monthly reporting line to the supervisory board and executive board within three months: nine meetings since 12/2025. The report itself is versioned and built from the CI pipeline; it is based on automatically collected activity and release data instead of assessments.
- Built a container-based CI/CD infrastructure from scratch: cross-compilation, host tests, and documentation builds in one continuous pipeline.
- Introduced declarative QA gates for DevOps and development artifacts — from the start using lefthook instead of pre-commit, executed in a dedicated container image.
Technologies used: arc42, req42, tpo42, docToolchain, PlantUML, ArchiMate, C4 model, ADR, C, C++ (GTest), CMake, Bare Metal (ARM Cortex-M3/M7), OCI containers, Jenkins, lefthook, Prometheus, Grafana, SBOM, CRA, OPC, SCADA, PLC integration, IPv6 migration, Zero Trust, Sociocracy 3.0, Cynefin
Ljubomir O.
Last position:
Senior Software Test Engineer at Keil KTM GmbH
Temporary employment
- System black-box integration tests (BBIT, IVVQ): Execution of regression, release, confirmation and conformity tests for safety-critical braking control units in the railway industry
- Software Test Application & Integration: Runtime configuration of software components and libraries, validation of interfaces, configuration dependencies and component interactions
- Test Automation (FEAT Framework): Co-development and further development of an automated test framework for test execution, reporting and result analysis
- Functional Safety (SiL4, FuSi): Ensuring compliance with safety requirements, traceability and coverage as well as conformity with EN50126/28/29
- Test Automation for Communication Components: Configuration and validation of fieldbus (CAN) and Ethernet-based TCMS data communication interfaces (TRDP and CIP)
- Requirements Analysis & Shift-Left (PTC Windchill ALM): Analysis of software and system artifacts to identify gaps, ambiguities and redundancies early in the SDLC
- Test Design & Test Case Development: Derivation of test conditions and coverage strategies and implementation of data-driven test cases (DDT) including reusable test data fixtures
- CI/CD & Automation (Python, PowerShell, Jenkins, SVN): Automation of build, test and HIL deployment processes as well as integration into CI/CD pipelines
- Test Data & Configuration Management (XML): Maintenance and adjustment of XML test vectors and system configurations with automated integration into test environments
- Non-Functional Testing: Execution of performance and load tests to assess stability and system behavior
- Agile Development & Defect Management (JIRA, Confluence): Work in Scrum teams, test coordination, review of test artifacts as well as defect tracking and root-cause analysis
- Error Analysis & Debugging (CANoe, CANalyzer): Analysis of errors and message flows across multiple system levels (application to bus)
- Model-Based Analysis (UML, Enterprise Architect): Specification of SUT/SOW and support for systematic test control
- Process & Test Documentation: Creation of integration and test documentation according to internal quality and certification requirements
Denis D.
Last position:
Sole Shareholder-Managing Director at Dlouhy Interim Executive GmbH
- Own company for Interim Executive Manager mandates; sole shareholder-managing director Denis Dlouhy.
- Positioning: Transformation, Post-Merger Integration, portfolio steering, HR for international corporations and hidden champions.
Emil O.
Last position:
Automation Engineer In House at Prevas AB
Working as an Automation Engineer in Prevas' in-house engineering team. My primary assignment involves developing and expanding ABB 800xA SCADA systems for a large-scale data center project. Responsibilities include SCADA graphic design, alarm management, system integration using OPC UA and Modbus, testing, verification, documentation, and commissioning support. In addition, I contribute to PLC and HMI development projects using Siemens, Rockwell, and ABB platforms and provide 24/7 remote support for industrial customers.
- ABB 800xA & ControlBuilder/ AC800M
- Rockwell Studio 5000 Logix Designer
- Siemens TIA Portal
- ABB 800xA
- Remote Support
- Troubleshooting hardware/software
Saqib J.
Last position:
AI Developer / AI Engineer (Lead) at KOM4TEC GmbH
- Designed and implemented modular AI assistants for sales and business processes within the Microsoft ecosystem (Agentic AI, Copilot extensions)
- Frontend architecture and development with React + TypeScript for embedded chat and assistant surfaces (streaming UI, Hooks, React Query, OpenAPI clients)
- Enterprise-level agent development: reusable skill/agent library, MCP servers, review and compliance gates
- LLM integration into the user experience: Anthropic (Claude), OpenAI, tool use, RAG pipelines, prompt engineering, guardrails
- Architecture and code review consulting, and mentoring within the AI development team
- Integration with Microsoft Graph, Power Platform, and Azure services
- Technologies: React, TypeScript, Anthropic Claude, OpenAI, MCP, RAG, Microsoft Graph, Power Platform, Azure
Matthias S.
Last position:
Software Developer and Consultant at CLADE GmbH
- Analysis of the existing CAN communication between microcontrollers
- Analysis of the sensors used and the measured values collected
- Planning the CAN messages for transmitting the measured values
- Iterative adjustment of the microcontroller code to the new CAN messages
- Cross-compilation from x64 to arm64
Martin W.
Last position:
Smart Manufacturing & Production Improvement Implementation at Food & Process Manufacturing
- Identified operational improvement opportunities together with production, engineering and management teams.
- Prioritized use cases according to measurable operational value rather than technology availability.
- Developed solutions around production performance, OEE, quality, traceability, reporting and process transparency.
- Translated operational requirements into required machine data, interfaces, information models and application requirements.
- Defined target architectures and integration approaches for heterogeneous brownfield production environments.
- Moved prioritized use cases from workshop and concept stages into concrete implementation projects.
- Coordinated manufacturing, OT, IT and technology stakeholders during implementation.
- Established reusable approaches to scale successful solutions beyond individual machines or pilot areas.
Giuseppe A.
Last position:
Embedded Software Development at Inheco
- AI Integration (LLM & RAG): Designed and built an internal intelligent RAG system (Retrieval-Augmented Generation) based on LLMs, n8n, and vector data to automatically analyze technical documents and error logs.
- Design & Implementation: Designed a robust RS-232/UART communication interface for an SBC-based embedded device used to control medical shaker systems.
- Architecture & Protocol Design: Built a highly maintainable software structure (OOP, SOLID) and defined resilient, hardware-level communication protocols, including multithreading and advanced error handling.
- Quality Assurance & DevOps: Automated testing with xUnit, ran integration tests directly on the hardware target, and maintained technical documentation to strict medical technology standards via Azure DevOps.
Label: C#, .NET, LLMs, RAG, n8n, RS-232, UART, Multithreading, async/await, xUnit, gRPC/protobuf, Blazor, MudBlazor, EF Core, Visual Studio 2026, Azure DevOps
Burhan D.
Last position:
Enterprise Architect & Solution Architect at DB Netz AG
With project PRIZMA, DB will modernize its infrastructure on the one hand, and develop a fail-safe IT landscape on the other hand, which can be restored quickly and securely in case of a disaster.
- Capture current architectures of existing systems as well as methodical consulting and development of target architectures
- Deepen and maintain the building plan / target IT landscape
- Implement technical architecture concepts & architecture descriptions
- Implement migration concepts for updating and further developing the platform and information systems
- Assess submitted improvement suggestions as part of the project
- Capability management: identify capability gaps, develop target visions, and support transformation planning within the enterprise architecture.
- Create a compatibility matrix of the components in use and compare dependencies of specific versions
- Create an IT concept for extending the platform with the following topics: hardware and software requirements, security, licensing, high availability, load balancing, backup & recovery, update strategy, monitoring integration, etc.
- Coordinate with business architects as well as technical architects from the cross-functional architecture area of the PRISMA program for the topics (backup, Active Directory, monitoring, Citrix, and business applications ...)
- Status meetings and alignment of project planning with the Release Train Engineer / Project Manager
- Advise the Release Train Engineer / Project Manager in identifying project risks
- Advise the System Architect Engineers in steering the implementation of the concept
- Implement the IT concept
- Document the infrastructure
Label: MS Project, LINUX, Windows, ORACLE, Java, REST, SharePoint, Microsoft Exchange, UML, Enterprise Architect, BPMN, AZURE, AWS, V-MODEL, Micro Service, VisualStudio, SAP S/4HANA, SCRUM(SAFE), ESB (TIBCO), Python, Innovator, LeanIX (TOGAF), Ansible, Ansible Tower, Ansible Automation, ROBOT, SpringBoot
Hendrik W.
Last position:
Software Test and Maintenance Support at Anton Paar ProveTec GmbH
- Adding/creating test specifications
- Performing regression tests
- Performing release tests
- Analyzing Jira tickets
- Identifying software defects and fixing them with C#
Discover over 15,000 top freelancers
Statistics of experts using OPC UA
Aggregated from the professional profiles of matched freelancers.
Experience
23 years

Position duration
3.1 years

Positions per freelancer
15

Top business areas
Information Technology, Product Development, Quality Assurance

Top industries
Manufacturing, Information Technology, Automotive

Certification focus areas
Information Technology, Operations, Business Intelligence
Bachelor's degree or higher
89%
Master's degree or higher
53%
Doctorate
6%

Certifications per freelancer
3

Most common languages
German, English, French

Speak two or more languages
100%
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Germany using OPC UA
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
OPC UA experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Manufacturing (83%)
- Information Technology (79%)
- Automotive (55%)
- Energy (34%)
- Education (33%)
- Healthcare (31%)
- Transportation (29%)
- Professional Services (28%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Industrial Connectivity
OPC UA, short for Open Platform Communications Unified Architecture, is a platform-independent standard for exchanging industrial data. It connects machines, sensors, control systems and enterprise applications while preserving context such as units, states, relationships and permissions. Companies use it to build interoperable automation and manufacturing systems.
Information Models
OPC UA does more than transport values between systems. Its information models describe equipment, processes and relationships in a structured way, making data easier to interpret across sites and vendors. Specialists work with companion specifications, custom namespaces, object types, methods, events and historical data to reflect operational needs accurately.
Ecosystem And Tools
The ecosystem includes OPC Foundation specifications, client and server SDKs, industrial gateways and connectors for common automation environments. Strong professionals may work with open62541, Unified Automation SDKs, Prosys tools, PLC interfaces and MQTT or REST integrations. They also understand certificates, discovery services, subscriptions and network segmentation.
Typical Projects
- Connect PLCs, robots, sensors and SCADA systems to a shared data layer
- Create OPC UA servers, clients, gateways and protocol adapters
- Map machine data into consistent information models
- Stream trusted shop-floor data to analytics, MES or cloud systems
- Migrate selected integrations from OPC Classic to OPC UA
When Expertise Matters
Companies bring in freelance OPC UA specialists when a pilot must become a reliable production integration, when different vendors expose inconsistent data, or when legacy automation needs a secure modernization path. In Germany, this work often supports manufacturing, process industries, energy facilities and machine builders. Remote delivery is practical for architecture and configuration, while commissioning may require on-site access to equipment.
What Good Looks Like
Effective OPC UA professionals connect protocol knowledge with real automation practice. They clarify data ownership, model information consistently, configure security instead of treating it as an afterthought, and test reconnects, subscriptions, alarms and failure handling. They document namespaces and deployment steps clearly, and communicate well with plant teams in German or English when projects involve local sites and international suppliers.
Frequently asked questions
Key details about OPC UA, drawn from the questions we get asked most.
OPC UA is used to exchange structured and secure data between industrial equipment, control systems, applications and cloud services. It supports telemetry, alarms, events, historical values and machine information models, so companies can connect systems without relying on one vendor.
OPC Unified Architecture is the modern successor to OPC Classic, with platform independence, built-in security and richer information modeling. OPC Classic commonly depends on Windows and COM or DCOM, while OPC UA is better suited to distributed, mixed-environment systems.
A strong OPC UA specialist often understands PLC communication, SCADA, MES, industrial Ethernet and database or cloud integration. Useful adjacent knowledge includes MQTT, REST APIs, cybersecurity, PKI certificates and the automation platform used at the site.
The right level depends on the scope. A simple client connection may need focused protocol expertise, while a plant-wide rollout calls for a professional who has handled information models, certificate management, gateway architecture, testing and commissioning.
OPC UA architecture, modeling, software configuration and documentation can often be handled remotely. On-site work may still be needed for PLC access, network checks, certificate deployment, commissioning or troubleshooting production equipment in Germany.
OPC UA fits edge-to-cloud designs when data is collected through a controlled gateway or client and forwarded using a suitable integration pattern. A capable specialist will define which data stays local, how context is preserved, and how identities and certificates are managed across network zones.
Ask the professional to explain an information model, security setup and failure-recovery approach in concrete terms. Review evidence of tested subscriptions, reconnect behavior, namespace documentation, interoperability checks and clear handover material rather than judging only by tool familiarity.
Before starting with OPC Foundation technology, clarify the available server or client interfaces, target SDK, plant network rules, certificate authority and commissioning responsibilities. Professionals should also confirm whether the assignment involves OPC Classic migration, custom modeling, on-site access or coordination with equipment vendors.
The average hourly rate of freelancers in Germany who have used OPC UA in their recent projects is 103 €, which corresponds to a daily rate of about 826 € based on an 8-hour working day.
Of the freelancers in Germany who have used OPC UA in their recent projects, 89% hold at least a Bachelor's degree, 53% hold at least a Master's degree, and 6% hold a doctorate.
On average, freelancers in Germany who have used OPC UA in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 3.1 years.
The most common languages among freelancers in Germany who have used OPC UA in their recent projects are German (100%), English (97%), and French (22%).
The most common industries among freelancers in Germany who have used OPC UA in their recent projects are Manufacturing (83%), Information Technology (79%), and Automotive (55%).
The most common business areas among freelancers in Germany who have used OPC UA in their recent projects are Information Technology (97%), Product Development (88%), and Quality Assurance (78%).
Main locations of FRATCH Experts, who have recently used OPC UA
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Countries:
- Germany
- Austria
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