IO-Link Experts in Germany
matched in minutes for smarter industrial automationHire experts who configure IO-Link masters, integrate smart sensors and actuators, and connect field data to PLC and industrial networks. FRATCH matches you quickly with vetted, available freelancers who fit your technical needs.
Meet FRATCH Experts in Germany, who have recently used IO-Link
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
Kevin E.
Last position:
Owner, Web Designer, and Web Developer at DriveLink Solutions
Self-employed owner of DriveLink Solutions since May 2026. Planning, design, and development of websites, web applications, and CRM solutions; WordPress/WooCommerce, PHP, JavaScript, HTML/CSS, MySQL, REST APIs, automation with n8n and Make, technical SEO, and maintenance.
Selected work samples:
Adresse Mieten Berlin Web design and frontend implementation of a multi-page website for business addresses and mail services. Structured presentation of services, pricing comparison with monthly/biannual toggle, responsive design, FAQ, and contact options.
Bauen & Wohnen im Bestand / Bau & Raum Anonymized construction/trades demo with a personal introduction, overview of services, and project inquiry. The work sample shows design and frontend features; it is not a confirmed customer review.
Fleetaro In-house development of a rental and CRM web application with rental agreements and invoices, as well as an Android app for vehicle handovers, returns, and damage recording. Project presentation with cleaned sample data; it has not yet been sold or used in real-world rental operations.
Further information and work samples are available through the portfolio link in the profile.
Sergej V.
Last position:
Software Developer Motor Control (Project "Multi DMR – Motor-Control") at Lorch Schweißtechnik GmbH
- Modification and redesign of the software for a series component
- Review of the software concept and extension of functionality
- Modification of software functions for DC motor control
- Hardware: ARM STM32G474, CAN bus, Lauterbach T32
- Software: Microsoft Visual Studio Code
Arnauld S.
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
Franck F.
Last position:
Multiproject Manager / Senior Business Analyst at MANN&HUMMEL
- Overall management of several project streams: mechanical development, IoT integration, software development, plant design, validation
- Management of an international project team made up of mechanical engineers, electronics engineers, software developers, designers, and external suppliers
- Coordination of global stakeholders from Germany, France, India, China, and the USA
- Planning, controlling, and reporting across all project levels: schedule, budget, resources, and deliverables (PMI-oriented)
- Moderation of steering committees, technical workshops, and milestone decisions
- Responsibility for requirements management and prioritization in the overall context (IoT, cloud, mechanical integration, safety standards)
- Quality assurance and test strategy: validation of filtration results, system behavior, plant integration
- Supplier management and procurement involvement for components, logistics, and assembly
- Risk management and escalation handling for technical, regulatory, or cross-country deviations
- Go-to-market preparation: coordination of product documentation, CE certification, training, and handover to service & sales
- Methods: multiproject management according to PMBOK, hybrid model SCRUM + classic milestone planning, stage-gate model
- Tools: MS Project, Excel, Jira, Confluence, Miro, MS Teams, SharePoint, CAD/CAE systems, test and validation software
- Technologies: OPC UA, MQTT, Siemens S7, IO-Link, Modbus, REST APIs, SCADA, monitoring dashboards, sensors & control technology, CE-compliant housing design, ISO standards
Joachim K.
Last position:
Programming and Commissioning of Test and Assembly Machines
- Programming in TIA Portal
- Visualization with WinCC
- F-CPU, Safety Integrated
- Various sensors and camera sensors
- Participated in defining the task and from design onwards
Discover over 15,000 top freelancers
Statistics of experts using IO-Link
Aggregated from the professional profiles of matched freelancers.
Experience
17 years
Position duration
1 year
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Automotive, Manufacturing, Healthcare
Certifications per freelancer
0
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 IO-Link
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.
IO-Link experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Automotive (100%)
- Manufacturing (83%)
- Healthcare (50%)
- Information Technology (50%)
- Construction (33%)
- Education (33%)
- Food and Beverage (33%)
- Pharmaceutical (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What IO-Link does
IO-Link is a point-to-point communication standard for connecting intelligent sensors and actuators to an IO-Link master. It carries process values, parameters, diagnostics and device identification over standard industrial cabling. Unlike simple binary or analogue signals, it enables two-way communication down to the field device.
Devices and architecture
An IO-Link system combines sensors or actuators, master ports, device descriptions and a controller or higher-level application. The IODD file defines each device’s data and parameters, while the master provides the gateway to a PLC or industrial network. Experts work with port classes, communication modes and engineering tools across the full installation.
- Select compatible sensors, actuators and IO-Link masters
- Import IODD files and configure device parameters
- Map process, diagnostic and event data to the control system
Networks and tooling
IO-Link commonly connects through masters with interfaces such as PROFINET, EtherNet/IP, EtherCAT or Modbus TCP. Projects may also expose production data through OPC UA, MQTT or a manufacturing data layer. Strong specialists understand PLC configuration, device integration, network diagnostics and the vendor tools used to commission each master.
Where companies use it
Companies use IO-Link in packaging, assembly, intralogistics, process support and machine building. Typical applications include presence detection, pressure and temperature measurement, gripping, identification and condition monitoring. In Germany, specialists often support machine commissioning, retrofit work and collaboration between plant teams, controls groups and equipment suppliers.
- Replace hard-wired sensors with parameterisable devices
- Standardise device replacement and automatic parameter download
- Capture diagnostics for maintenance and production support
When to bring in an expert
Freelance expertise helps when a machine needs a new IO-Link architecture, a master must be integrated into an existing PLC project, or device data is not reaching the supervisory layer. Specialists can also resolve IODD issues, port configuration errors, inconsistent diagnostics and commissioning delays. Remote work suits configuration and troubleshooting; on-site support is valuable during wiring checks and production start-up.
What good work looks like
Strong IO-Link professionals document the topology, device parameters, IODD versions, PLC mappings and diagnostic behaviour. They test fallback states, replacement procedures and network communication under realistic operating conditions. They also distinguish a sensor fault from a cable, port, master or controller issue, and explain the result clearly to both automation teams and plant operators.
Frequently asked questions
Before you brief your next project: the most common questions about IO-Link.
IO-Link connects intelligent sensors and actuators to a master using bidirectional digital communication. Companies use it to transfer process values, configure devices remotely, read diagnostics and simplify replacement without relying only on fixed analogue or switching signals.
IO-Link adds parameterisation, identification and diagnostic data to a point-to-point sensor connection, while traditional wiring often carries only a switching or analogue value. It does not replace every fieldbus; the IO-Link master still links the devices to systems such as PROFINET, EtherNet/IP or EtherCAT.
A strong IO-Link specialist usually understands PLC programming, industrial Ethernet, IODD files, sensor selection and commissioning. Experience with a relevant master vendor, network diagnostics and technologies such as OPC UA can also matter when device data must reach higher-level systems.
The right level depends on the scope. A small device replacement may need focused configuration knowledge, while a machine retrofit or multi-master installation calls for experience with PLC mapping, safety boundaries, diagnostics and commissioning in live production environments.
Much of the IO-Link work can be handled remotely, including architecture reviews, IODD management, master configuration and PLC integration. On-site presence may still be needed in Germany for wiring checks, device tests, machine commissioning or issues that cannot be reproduced through remote access.
IO-Link appears in machine building, packaging, assembly, intralogistics and process-support applications. It is useful wherever teams need consistent sensor configuration, richer diagnostics or easier replacement across repeated machines and production cells.
Ask for a clear topology, documented port settings, verified IODD files and tested PLC mappings. A capable IO-Link professional should demonstrate device diagnostics, replacement behaviour and fault isolation, not just show that a sensor produces a value during a basic test.
Typical IO-Link challenges include incompatible IODD files, incorrect port modes, missing PLC data, unsupported device functions and unclear diagnostic codes. Good preparation includes checking master capabilities, device compatibility, network mappings and commissioning access before equipment arrives on site.
The average hourly rate of freelancers in Germany who have used IO-Link in their recent projects is 81 €, which corresponds to a daily rate of about 651 € based on an 8-hour working day.
On average, freelancers in Germany who have used IO-Link in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 1 year.
The most common languages among freelancers in Germany who have used IO-Link in their recent projects are German (100%), English (100%), and French (67%).
The most common industries among freelancers in Germany who have used IO-Link in their recent projects are Automotive (100%), Manufacturing (83%), and Healthcare (50%).
The most common business areas among freelancers in Germany who have used IO-Link in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (83%).
Main locations of FRATCH Experts, who have recently used IO-Link
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
