IEC 61131-3 Experts in Germany
in minutes from over 15,000 CVs with vetted specialists and the power of AI.Hire experts who work with PLC logic, Structured Text, Ladder Diagram, Function Block Diagram, and CODESYS-based automation. Get fast, precise matching with vetted, available freelancers for control systems, commissioning, and plant updates.
Meet FRATCH Experts in Germany, who have recently used IEC 61131-3
Volker Foitzik
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
Kusay Tomeh
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.
Hendrik Wagner
Last position:
Software Test and Maintenance Support at Anton Paar ProveTec GmbH
- Add/create test specifications
- Conduct regression tests
- Conduct release tests
- Analyze Jira tickets
- Identify software defects and fix them with C#
Thomas Stork
Last position:
Automation Technology Lecturer at HWK Munich and Upper Bavaria
- Training professionals in PLC technology, pneumatics, control engineering, and KUKA robots
- Creating scripts for Siemens systems: STEP 5, STEP 7, TIA Portal, WinCC
- Creating scripts for pneumatics, control engineering, and KUKA robot programming
- Serving on the examination committee for quality assurance in vocational training
- Training and certifying over 500 professionals
Jürgen Kaiser
Last position:
Project Management and System Architecture at 3E-motion Ventures GmbH
- Managed and developed the system architecture for the INEOS Grenadier model year 2028/29, ensuring interaction of all E/E system components according to GB/T 32960.
- Developed a product reference model for the entire E/E system of the vehicle.
- Coordinated requirements for Battery Management Systems (BMS) between OEM and suppliers at SYS.1 and SYS.2 levels for VW and Porsche.
- Created and aligned requirements for BMS fan control and OBD within Polarion.
- Developed a secure system architecture for steer-by-wire systems, including ECU hardware, software, and communication.
- Integrated various process design approaches from CARIAD, including SAFe (Scaled Agile Framework), FUSE/FAME, and RFLP, with ASPICE requirements.
- Created a process model in ESCAPE mapping essential components of SAFe onto ASPICE.
- Served as Lead Architect for electric drive development, focusing on parklock and cooling and lubrication functions for Mercedes AMG.
- Analyzed requirements in Integrity and developed functional models in UML using Enterprise Architect.
- Developed generic models for parklock and cooling functions, including sequence diagrams and a navigation model for the overall project.
Tamás Nagy
Last position:
JAVA development for thermal printer test program at GeBE Elektronik und Feinwerktechnik GmbH
JAVA development for thermal printer test program
Further development of the free thermal printer test program in Java 1.8 AWT and Swing
Creating new plugins for sensor feedback using a real-time bar chart
Using multiple printer languages for USB, UDP, TCP and RS232 communication
Improving usability and responsiveness with threads and string buffering
Querying and displaying network configuration
Converting and processing hex data from printer responses
Advanced study of servomotors and USB bus
Enumerating available USB ports from the Windows Registry, retrieving additional information via PowerShell, parsing and listing all in a Java list box
Fixing reported database errors
Detecting if the printer driver is installed and recognizing physically connected devices
Migration to Windows 11
Handling customer tickets as part of support in C++ and Qt6
Writing CMake scripts
Compiling STM32 printer firmware with CMake and managing the process in FileMaker Pro
Technologies: Eclipse, Java 1.8, AWT, Swing, RS232, USB, TCP, UDP, PowerShell, servomotor technology, Windows 10 and Windows 11, WSL 2.4, Ubuntu Linux, CMake, Qt6, FileMaker Pro
Peter Kortmann
Last position:
Hardware and Software Developer / Project Manager at Anonymer Kunde
- Development of control units for the automotive industry incl. embedded software
- CAN bus, Vector Tools, CANoe
- Support of the development process according to ISO 26262
- Ensuring cyber security standards:
- Key exchange (PKI) between vehicle and control units
- Hardware Security Module (HSM)
- Communication with external service providers (international)
- Development (PCB) of measuring adapters, statistical analysis of sensors
- IoT and embedded software development, backend administration
Andreas Nolden
Last position:
Open Source Founder at Privatier
- AI-supported source code analysis
- AI image generation for a shirt shop
- AI-supported analysis of connected YouTube channels and commenting users
- AI-supported software prototyping
- Operation of a local AI environment
- 3D printing and scanning: development of a process to repair GfK parts using 3D-printed negative molds
The focus is on practical applications of new technologies, founding an open-source project for a yacht autopilot, as well as yacht refit and motorhome conversion.
Natdanai Promchinavongs
Last position:
Software Developer for SiC-Mold Production Line at Vitesco Technologies Germany GmbH
- Developing software solutions based on technical requirements and existing systems
- Developing TLV commands for automated laser cleaning and laser power measurement
- Supporting and assisting production processes
- Performing software tests as well as analyzing and fixing errors
- Integrating and connecting MES systems
- Using C# and Structured Text (ST according to IEC 61131-3)
- Using TwinCAT 3.1 as the development environment
- Implementing visualizations with Windows Forms
- Working with Beckhoff CX controllers and Stäubli industrial robots
- Using Ethernet and EtherCAT networks
- Integrating TRUMPF TruMark 3330 and 7050 laser systems
- Using a KEYENCE vision system
- Version control with Git and GitLab
Arnauld Siewe
Last position:
PLC Programmer/Maintenance Technician at Tiernahrung Deuerer GmbH
- Planning of automation systems
- PLC programming (Simatic S7, TIA Portal: AWL, SCL, FUP, KOP)
- Visualization of automation systems (WinCC, Sirvac, GUI)
- Commissioning of systems with various drives and sensors
- Creating and maintaining documentation and training materials
Wolfgang Felsen
Last position:
Delphi Software Developer at Goebel Instrumentelle Analytik
- Took over software development and further development of an HPLC and photometer control and evaluation system
- Skills: software development · software system engineering · Microsoft SQL Server · software design · Delphi · HPLC · analytics · PDF · product data management
Tilmann Spahlinger
Last position:
Technical Expert, Software Architect at Rolls Royce Power Systems / MTU
- Created concepts and architecture for ECU diagnostics over CAN-Bus using UDS, PDX, ODX and safety paradigms
- Designed system deployment for EMS and documented using UML, Draw.io, MS Word, MS Visio and Confluence
- Developed process flows for development, planning, logistics, test & diagnostics in Scrum with Jira and MS Planner
- Communicated across multiple customer teams, conducted knowledge transfer
Okan Altay
Last position:
Team Leader / Project Manager at OEM in the Stuttgart area
- development, setup and deployment of a custom HIL system for aerodynamic components
- adaptation of the system specification and creation of the test specification
- coordination and planning of test cases, as well as specification of component and K-HIL tests at the system level and in integration
- planning, specification and execution of interface tests
- participation in vehicle trials
- led a team of 10 members following classic and agile A-SPICE standards with development according to the V-model
- Tools used: Jira, MS Project, GitTea, Gox, Confluence, KPM, MoveIT, DOORS, PTC Integrity, Intense, JFrog
Stefan Pöter
Last position:
Managing Director at ootb automation GmbH
- Sales of scalable automation applications in the field of machine control
Discover over 15,000 top freelancers
Statistics of experts using IEC 61131-3
Aggregated from the professional profiles of matched freelancers.
Experience
25 years
Position duration
4.3 years
Positions per freelancer
15
Top business areas
Product Development, Information Technology, Quality Assurance
Top industries
Manufacturing, Automotive, Information Technology
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
100%
Master's degree or higher
67%
Doctorate
17%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Germany using IEC 61131-3
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
PLC control
IEC 61131-3 defines how industrial control logic is written for PLCs. It covers the core languages used in machine and plant automation, including Structured Text, Ladder Diagram, Function Block Diagram, and Sequential Function Chart. Companies use it to build stable control for lines, cells, and equipment.
Common tools
- Structured Text for data handling and complex logic
- Ladder Diagram for maintenance-friendly control
- Function Block Diagram for reusable automation blocks
- CODESYS and other IEC 61131-3 environments
- Versioning, testing, and commissioning support
Where it fits
Strong IEC 61131-3 specialists work on packaging lines, material handling, process equipment, building automation, and factory retrofit work. In Germany, this often means plants that need clean handover, clear documentation, and control logic that maintenance teams can keep running. The standard helps teams move between vendors without rewriting everything from scratch.
When to bring one in
- A PLC needs a new control sequence or safety-related logic
- A legacy project must be cleaned up or documented
- A machine line must be integrated with drives, sensors, and HMI
- A site needs troubleshooting during commissioning or ramp-up
- An existing code base needs structured reuse across machines
What good experts do
A strong IEC 61131-3 expert writes readable control code, separates logic into clear blocks, and tests behavior against real machine states. They understand I/O mapping, alarms, interlocks, and commissioning constraints. Good professionals also know how to work with electricians, maintenance staff, and production teams.
Germany collaboration
Companies in Germany often look for specialists who can join on-site during commissioning and then continue remotely for changes, reviews, and support. That mix matters when PLC work touches live equipment, local standards, and German-speaking shop-floor teams. Clear documentation and disciplined handover are part of the job.
Frequently asked questions
Key details about IEC 61131-3, drawn from the questions we get asked most.
IEC 61131-3 is the standard used to write PLC control logic for industrial machines and plants. It covers the languages and structures used for sequences, interlocks, alarms, and reusable control blocks. Companies bring in specialists when control code must be reliable, readable, and easy to maintain.
IEC 61131-3 gives a common programming model across many PLC environments, while vendor-specific systems add their own tools and libraries. That makes the standard useful when a team wants portability and clearer handover. In practice, strong professionals still need to know the target platform, such as CODESYS or a vendor environment.
A strong IEC 61131-3 specialist usually knows Structured Text, Ladder Diagram, Function Block Diagram, and Sequential Function Chart. The role also calls for I/O mapping, HMI logic, drives, alarms, testing, and commissioning support. Good documentation habits matter just as much as coding style.
Not every change needs a large project team, but IEC 61131-3 work still benefits from someone who understands the full control flow. Even a small logic update can affect interlocks, timing, or machine safety. For simple edits, a focused specialist can be enough if the system is already well documented.
Yes, IEC 61131-3 work can be split between remote coding and on-site commissioning. Remote collaboration fits reviews, code updates, testing support, and documentation. On-site time is still useful when the logic must be verified against real hardware, production conditions, or German-speaking operations teams.
Look for real PLC project work, not just general software experience with IEC 61131-3. Ask which machines, lines, or processes they have supported, and which PLC environment they know best. Also check how they handle testing, version control, and handover documentation.
IEC 61131-3 is the standard most people mean when they talk about PLC programming, but the two are not exactly the same. PLC programming is the broader activity, while the standard defines the main languages and structure. That distinction matters when you want portable code and clear expectations.
A strong IEC 61131-3 expert writes code that maintenance teams can understand after handover. They keep logic modular, test edge cases, and document assumptions around sensors, drives, and machine states. The best specialists also know how to support commissioning without slowing down production.
The average hourly rate of freelancers in Germany who have used IEC 61131-3 in their recent projects is 95 €, which corresponds to a daily rate of about 760 € based on an 8-hour working day.
Of the freelancers in Germany who have used IEC 61131-3 in their recent projects, 100% hold at least a Bachelor's degree, 67% hold at least a Master's degree, and 17% hold a doctorate.
On average, freelancers in Germany who have used IEC 61131-3 in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 4.3 years.
The most common languages among freelancers in Germany who have used IEC 61131-3 in their recent projects are German (100%), English (86%), and French (36%).
The most common industries among freelancers in Germany who have used IEC 61131-3 in their recent projects are Manufacturing (100%), Automotive (71%), and Information Technology (71%).
The most common business areas among freelancers in Germany who have used IEC 61131-3 in their recent projects are Product Development (100%), Information Technology (93%), and Quality Assurance (93%).
Main locations of FRATCH Experts, who have recently used IEC 61131-3
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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