CODESYS Experts in Germany
, matched with vetted freelancers in minutesHire experts who program PLCs, configure fieldbus networks and deliver HMI or motion-control solutions with CODESYS. FRATCH connects you quickly with precise matches from vetted, available freelance professionals.
Meet FRATCH Experts in Germany, who have recently used CODESYS
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
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
Volker F.
Last position:
Technical Lead | Software Architect | Embedded Software Engineer at Hydac
- Development of safety-related embedded software for a mobile machine on a Hydac TTC 2390 controller.
- Implementation in C with consideration of SIL 3 / ASIL D and MISRA-C:2025.
- Implementation of communication via CAN, CANopen, and J1939.
Standards, guidelines and norms: ISO 26262, IEC 61508, MISRA-C:2025
Technologies: C99, Hydac TTC 2390, Infineon TriCore Aurix TC397, Hightec C/C++ Compiler, PC-lint Plus, CAN, CANopen, J1939, MISRA-C:2025
Olfa A.
Last position:
Senior Embedded Software Engineer / Function Developer at Enginius GmbH (FAUN GROUP)
- Developed model-based software for hydrogen tank control units using MATLAB/Simulink, aligned with ISO 26262 functional safety requirements
- Performed system integration and software verification across MIL and HIL environments using dSPACE and Vector tools
- Defined software architecture (SADS) with interface specifications for CAN, analog, and digital communication protocols
- Generated production-ready embedded C code using Simulink Embedded Coder; created and maintained A2L calibration files with CANape
- Designed and executed MIL/HIL test cases ensuring full coverage of functional and safety requirements
- Implemented CODESYS PLC applications on IFM ecomatController; applied CAN and Modbus TCP/IP communication protocols
- Contributed to HMI/UI development using Qt/C++ on Linux (Qt Creator)
- Applied agile Kanban workflow with Git-based version control (Bitbucket)
Tools: MATLAB, Simulink, CANape, CANalyzer, PCAN-View, Embedded Coder, CODESYS, TTC2038/PXROS, Codebeamer, Jira, Git
Jens-Uwe P.
Last position:
Architecture and programming for an automotive test bench platform at Automotive supplier
In this project, I was responsible for designing and implementing a new, modular, and highly scalable test bench platform for an automotive supplier. My focus was on developing a robust system architecture and programming the associated software, with UML modeling used consistently throughout. This structured approach significantly increased the reusability of individual LabVIEW test modules and sustainably reduced development time for subsequent projects. I also integrated modern automotive standards such as CAN FD, LIN, and safety requirements, making the solution future-proof.
Technologies: LabVIEW, Visio, UML, CAN FD, LIN, DMM, Safety, Image processing, Project management, HMI, C#, C++, Python, Rust, CI
Youness R.
Last position:
Communication modernization and recipe management between S7-300, S7-1500 and WinCC V7 at Siemens AG
- Consulting and development of suitable communication concepts between S7-300 and S7-1500, taking the existing PROFIBUS infrastructure into account
- Technical support for connecting the S7-300 controllers to the existing recipe data block of the S7-1500
- Assisting in the development of the communication sequence for recipe access (read, write, acknowledge, status handling)
- Configuration of S7 communication (PUT/GET)
- Creation and adaptation of WinCC V7 scripts (C scripts and VBS scripts) for WinCC-based recipe management
- Development, optimization, and integration of recipe processes into the existing WinCC project structure
- Commissioning of the new communication interfaces and recommissioning of the recipe logic on existing systems
- Creation of technical documents: communication sequences, functional descriptions, commissioning documentation
Kusay T.
Last position:
Freelance System & Software Architect - DNA-Extraction Robot at QIAGEN GmbH
- System and software architecture for the QIA-symphony Connect DNA-extraction robot in Life Science / IVD automation.
- Designed features and control logic for extraction, pipetting, lysis and eluate modules using C++, PLC/ST (Beckhoff IPC / TwinCAT 3) and model-based concepts.
- Delivered ISO 13485-oriented requirements, architecture, unit/integration/regression tests and DHF/VEP/VER/TCL documentation.
- Used Polarion, Jira, Confluence, Azure and AI-assisted documentation to improve traceability and engineering efficiency.
Rachid R.
Last position:
Self-employed at R&A Engineering GmbH
- Development and programming of PLC controls and servo drives, such as TIA-Portal, Siemens Step7 Classic, RSlogix/Studio5000, Unity Pro and CODESYS
- Visualization systems WinCC, FactoryTalk VIEW
- Integration of various fieldbuses into automation devices (PROFIBUS, PROFINET, DeviceNet, ControlNet, Ethernet/IP, MODBUS)
- Programming of scripts (C# / VB.Net / VBscript / VBA)
- Selection of electrical components and systems
- Commissioning and optimization of simple to complex systems and machines
- Planning and creation of electrical schematics
- Preparation of installation plans
- Preparation of bills of materials and technical calculations
- Feasibility studies
Frank M.
Last position:
Plan & Code Automation UG
- Operations and rehabilitation
- During this time, development of:
- Websites zentivo-holding.com zyntra3d.com plancodeautomation.com
- Stock trading software
- Automated trading of all financial instruments listed on the stock exchange, with AI integration
- Project management software
- Automated project administration and project management with automated creation of material lists, electrical schematics, PLC programs, HMI programs, AI functions in control technology, project schedules and cost calculations, as well as quotation preparation and cost tracking.
- AI integration
- 3D printing management
- Various methods for creating 3D models from photos, videos or drawings.
- Creation of files suitable for 3D printing, 3D printer management via API.
- AI integration
Tools: Visual Studio, Codex and Cursor, HTML, Java, Python, PHP, C#, Python, SQL, Jason Script.
Daniel P.
Last position:
Freelance specialist in industrial automation technology at dPSolutions
- Self-employed PLC and software specialist focusing on automation and special-purpose machinery
- Programming, modernization, expansion and optimization of production systems, focusing on increased efficiency, data transparency and system integration
- PLC programming and safety with Siemens S7 Classic/TIA Portal, Beckhoff TwinCAT 2/3 and CoDeSys
- Development of high-level language software and database applications (.NET / C#, C++, Visual Basic .NET, Borland/Embarcadero C++)
- Development of custom software solutions for industrial automation, including embedded systems (Raspberry Pi, Arduino, NodeMCU, ESP8266)
- Integration of external systems such as reading devices, printers, scales, scanners and cameras, as well as various bus systems (Ethernet, Profinet, Profibus, EtherCAT, CAN bus, RS232, TCP/IP)
- Creation of visualizations and HMI applications with Siemens WinCC flexible, Beckhoff HMI and .NET frontends
- Planning, development and integration of machine vision solutions (Keyence, Cognex, AVS Alfavision, camera systems) in PLC and PC environments
- Design and implementation of process data collection systems and traceability solutions (100% traceability) based on Microsoft SQL Server (Compact, Express, Server), including stored procedures and direct PLC-SQL communication
- Creation of software and PLC concepts, standard function blocks and project libraries for PLC and high-level language projects
- Planning and programming of conveyor, inspection, assembly, packaging and grinding systems in industries such as automotive, chemical, food, electronics, machinery and systems engineering
- Conducting workshops and training on Siemens TIA Portal, STEP7 Classic, Beckhoff TwinCAT (including TwinSAFE), as well as topics such as architectures, safety, database integration and documentation
- Creation of technical documentation, manuals, training materials and class documentation with Microsoft Office and Doxygen
- Project management tasks from requirements analysis through planning, concept development and supplier coordination to commissioning, production support and customer support
Matthias D.
Last position:
Project Building Automation WAGO at Ingenieurbüro Dräger
- Topic: Programming of heating controls
- Client: Hoffbauer Foundation
- Requirements: Analysis of existing systems, reprogramming, commissioning, documentation
- Focus: Development of automation solutions and control systems
- Technology: Codesys 3.5
Daniel S.
Last position:
Senior Software Engineer at energielenker solutions GmbH
- Designed and implemented a Python-based ETL pipeline with the Dagster framework to transform raw energy data from heterogeneous sources using InfluxDB and visualizations in Grafana
- Defined time-based and dependency-based jobs
- Deployed to managed Kubernetes clusters using Helm
- Integrated InfluxDB Cloud
- Prepared data for use in Grafana, including cleaning, normalization, and time-based resampling in Python
- Developed dashboards and visualizations in Grafana
- Developed unit tests with mocking using pytest
- Set up a CI/CD pipeline in GitLab
Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud
Basel J.
Last position:
Senior Application Engineer / Product Manager at Altran Magnetics LLC
- Oversee development and optimization of key products, including DP contactors, EMI filters, and circuit breakers.
- Lead certification processes ensuring compliance with UL, TÜV, and VDE standards.
- Act as technical liaison between customers, sales teams, and manufacturing to deliver customized solutions.
Michael D.
Last position:
Sole Proprietor at Unternehmens- und Managementberatung Michael Dobmeier
- Advising and technical implementation of AI integration and workflow automation for small and mid-sized businesses
- Building a multi-tenant AI agent platform as a product base
- Combining strategic consulting, technical implementation, and team enablement
Project examples:
- Development and architecture of the SOLUMiDO Agent-UI platform for integrating digital colleagues into business processes (Next.js, TypeScript, PostgreSQL, Keycloak)
- Development of the ToolChange Assistant: a multilingual, voice-controlled AI agent for optimizing setup times and reducing errors
- Implementation of an AI email assistant for intelligent email classification and processing with Microsoft 365 integration
- AI video marketing integration (STORYNEXT) for mid-sized companies, including AI-assisted briefing and performance analysis
- Social media content automation with AI text creation, approval workflow, and automatic publishing
- Business process analysis and digital solutions implementation for facility management service providers
- Digital consulting and web presence development for associations in rural areas
Wolfgang S.
Last position:
Software Developer / Aviation Commissioning Engineer at Vakuum Schmelze Hanau
- Development of automation software and commissioning of a pneumatic press for processing electrical sheet stator cores, including KUKA robot handling, process monitoring, and connected measurement systems for quality inspection and sorting.
Discover over 15,000 top freelancers
Statistics of experts using CODESYS
Aggregated from the professional profiles of matched freelancers.
Experience
24 years
Position duration
2.6 years
Positions per freelancer
17
Top business areas
Product Development, Information Technology, Quality Assurance
Top industries
Manufacturing, Information Technology, Automotive
Certification focus areas
Information Technology, Quality Assurance, Product Development
Bachelor's degree or higher
88%
Master's degree or higher
60%
Doctorate
16%
Certifications per freelancer
3
Most common languages
German, English, Arabic
Speak two or more languages
93%
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 CODESYS
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.
CODESYS experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Manufacturing (89%)
- Information Technology (59%)
- Automotive (56%)
- Energy (37%)
- Utilities (37%)
- Construction (30%)
- Healthcare (30%)
- Education (26%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What CODESYS does
CODESYS is an independent development environment for industrial automation. It supports IEC 61131-3 programming languages and runs control applications on compatible PLCs, industrial PCs and embedded controllers. Companies use it to create logic for machines, production lines and mobile equipment without being tied to one hardware brand.
Core automation work
CODESYS projects cover the complete control layer, from software design to commissioning. Specialists turn machine requirements into structured, testable applications and connect them to sensors, actuators and supervisory systems.
- Develop PLC logic with Structured Text, Ladder Diagram or Function Block Diagram
- Configure motion, safety and visualization functions
- Integrate drives, I/O modules and industrial communication
- Test, document and commission control applications
Ecosystem and tooling
The CODESYS Development System includes editors, compilers, simulation features, visualization tools and device configuration. Its ecosystem commonly includes CODESYS Control runtimes, CODESYS Visualization, libraries, gateways and fieldbus interfaces such as EtherCAT, CANopen, Modbus and OPC UA. Strong specialists also work with version control, automated testing and structured libraries.
When companies need specialists
Freelance expertise is useful when an automation team must deliver a machine retrofit, migrate an existing controller or resolve a difficult commissioning issue. In Germany, CODESYS is found across machine building, packaging, intralogistics, process equipment and mobile machinery. Remote work suits software design and testing; site visits may still be needed for hardware checks and commissioning.
- Start a new CODESYS control application
- Modernize legacy PLC software
- Connect machines to MES, SCADA or cloud systems
- Troubleshoot timing, communication or runtime faults
What good work looks like
A capable professional separates machine logic from hardware-specific details and uses clear naming, reusable function blocks and documented state handling. They understand real-time behavior, task priorities, data types, diagnostics and safe failure modes. They can explain design choices to mechanical, electrical and production teams and leave maintainable source code behind.
Choosing the right profile
Review experience with the target controller, runtime, fieldbus and machine type rather than relying on the CODESYS name alone. Ask for examples of commissioning, debugging and HMI or motion work, plus evidence of disciplined testing and documentation. A strong specialist adapts to the customer’s standards, communicates clearly in the required language and can collaborate with teams on site or remotely in Germany.
Frequently asked questions
Everything clients usually want to know about CODESYS, in one place.
CODESYS is used to program and configure industrial controllers for machines, production equipment, mobile machinery and process systems. It supports control logic, visualization, motion, communication and device configuration within one development environment.
CODESYS is a hardware-independent environment that can run on controllers from different vendors, while Siemens TIA Portal is closely tied to Siemens automation hardware. The right choice depends on the controller range, existing standards, engineering workflow and required ecosystem.
CODESYS work often requires knowledge of industrial networking, electrical schematics, sensors, actuators and drive systems. Useful adjacent skills include OPC UA, EtherCAT, CANopen, Modbus, HMI design, motion control, Git and commissioning practices.
CODESYS expertise should match the project risk and hardware scope. A small logic change may need focused familiarity with the target runtime, while a new machine or safety-critical application calls for a professional who has handled architecture, testing, commissioning and fault diagnosis.
CODESYS software design, simulation, documentation and much of the debugging can be handled remotely. Hardware integration, electrical checks and final commissioning often require access to the machine, either on site in Germany or through a coordinated local team.
CODESYS project references should show relevant controller families, communication protocols and machine types. Ask how the professional structures code, tests changes, records diagnostics and handles source control, backups and handover.
CODESYS can support a migration when the target hardware offers a compatible runtime and the application can be mapped to its libraries and interfaces. The work may still involve rewriting hardware drivers, visualizations, motion functions and communication logic rather than a direct conversion.
CODESYS professionals improve maintainability through modular function blocks, consistent naming, clear task design and versioned libraries. They also document hardware assumptions, add meaningful diagnostics and test changes in simulation or on a controlled commissioning setup.
The average hourly rate of freelancers in Germany who have used CODESYS in their recent projects is 91 €, which corresponds to a daily rate of about 728 € based on an 8-hour working day.
Of the freelancers in Germany who have used CODESYS in their recent projects, 88% hold at least a Bachelor's degree, 60% hold at least a Master's degree, and 16% hold a doctorate.
On average, freelancers in Germany who have used CODESYS in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.6 years.
The most common languages among freelancers in Germany who have used CODESYS in their recent projects are German (100%), English (89%), and Arabic (19%).
The most common industries among freelancers in Germany who have used CODESYS in their recent projects are Manufacturing (89%), Information Technology (59%), and Automotive (56%).
The most common business areas among freelancers in Germany who have used CODESYS in their recent projects are Product Development (100%), Information Technology (89%), and Quality Assurance (81%).
Main locations of FRATCH Experts, who have recently used CODESYS
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.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
