I2C Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used I2C
Matthias Spiller
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
Lino Giefer
Last position:
Senior Data Scientist at VinFast Germany GmbH
- Led strategic software development of fusion algorithms for precise object tracking, trajectory prediction, and environment modeling based on multimodal sensor data (e.g., camera, LiDAR, radar, GNSS, IMU)
- Developed and implemented navigation algorithms for autonomous vehicles, including path planning, obstacle avoidance, and sensor fusion of visual, inertial, and distance-based sensor sources
- Automated extraction and training processes with CI/CD
- Developed and optimized data pipelines and processes in Microsoft Azure using Apache Spark, Databricks, and PySpark
- Developed and optimized embedded software for automotive control units
- Designed latency-critical software for real-time control in robotic systems with RTOS (freeRTOS, SAFERTOS)
- Used the Vector toolchain (CANdela, DaVinci, CANoe) for configuration and diagnostics
- Optimized existing data pipelines and processes (ETL, data warehouse, SQL)
- Developed and trained machine learning models using PyTorch
- Created deep-learning-based object detection and visual SLAM algorithms, trained on combined data from camera, LiDAR, and IMU sensors
- Implemented computer vision algorithms for object detection and classification in robotic systems using OpenCV and YOLO, utilizing synchronized image and depth data
- Implemented behavior-based control systems for autonomous robots using ROS2 Behavior Trees
- Performed testing, release, and integration of sensor fusion algorithms into automotive production programs
- Ensured adherence to proper software development processes and safety standards to guarantee high data quality (MISRA, ISO 26262, ASPICE)
Waqar Ahmed
Last position:
Principal Engineer at Microchip Technology
- Acted as an FPGA Subject Matter Expert with hands-on experience in Microchip Technology Libero SoC and PolarFire FPGA/SoC evaluation platforms.
- Identified a bug in an application note and provided a solution.
- Collaborated with Field Application Engineers (FAEs) to analyze, debug, and resolve customer-reported FPGA issues.
- Worked with internal teams to accelerate SPI flash programming by creating an FPGA design that enabled high-speed communication between JTAG and SPI.
- Characterized PolarFire FPGA temperature TVS sensors from -40°C to 100°C, comparing estimated and measured surface temperatures and analyzing junction-to-surface temperature estimation using the Psi-JT thermal parameter.
S.r.k. Chandra
Last position:
Senior Software Engineer at STEPPS GmbH / Motherson Dr. Schneider
Project: Intelligent Light Communication Software — Audi
- Analysis and clarification of system requirements with the customer and translation into software architecture and design decisions
- Architecture and implementation of CAN FD and SPI communication on NXP S32K312
- Design and development of flash bootloader, flash driver, and boot manager for secure OTA-capable updates
- Configuration of the AUTOSAR BSW architecture (Dcm, Dem, NvM, BswM, Os, Mcu, Port, Com stack, Rtc) for portability and maintainability
- Design of the crypto stack (Csm, CryIf, Crypto) for secure flash and diagnostic data; integration of the NXP HSE core and wrapper layer
- Integration of customer-specific modules (Sfd, Ivd, Npm) into the Vector AUTOSAR stack
- Definition of the memory architecture: Memmap, CMake, and linker script configuration
- Leading board bring-up for the Audi light demo platform; implementation of diagnostic routines and identifiers
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#
Muhammad Jamshaid Iqbal
Last position:
Embedded Linux Intern – IoT Sensor Prototype Development at DHL
- Built a modular C++ 20 embedded Linux acquisition system on a Raspberry Pi, synchronizing IMU and dual-camera data streams to sub-millisecond accuracy.
- Integrated retro-reflective and contrast sensors to trigger acquisition and detect gaps between sorter rails.
- Implemented SPI & I2C sensor communication, GPIO interrupt handling with libgpiod, and CSV & JSON output.
- Designed a multi-threaded acquisition pipeline and an SPSC queue between acquisition and writer threads.
- Built a Python/HTML/CSS based web-server and validated the prototype in a DHL warehouse for defect detection.
- Documented software behavior, configuration, and results for maintainable handover and further development.
Alexander Döhrmann
Last position:
Systems Engineer at infoteam AG
- Further development and maintenance of data management software in the nuclear sector
- Processing and resolution of problem reports
- Bug fixing and defect remediation
- Performance optimization of legacy code
- Analysis and remediation of security vulnerabilities
- Specification and conceptual design of new features
- Modernization of legacy codebase to C++17
- Technologies & tools: C++, ClearCase, SQL, HTML, CSS, JavaScript, Git, Linux, Solaris, Shell-Script, VisualStudio
- Frontend – Smart Sensor Dashboard: development of a browser-based dashboard for real-time visualization of smart sensor data
- Technologies & tools: TypeScript, Angular, HTML, CSS, JavaScript, MQTT, VisualStudio
- Implementation of embedded safety software for a magnetic levitation elevator system
- Requirements engineering
- Documentation and implementation of safety software for the magnetic levitation elevator control system and the central management system
- Creation and execution of unit tests for all implemented modules
- Technologies & tools: C/C++, Jira, Bitbucket, Confluence, VectorCAST, MISRA-C, Lint, Doxygen, Git
Kai Wolf
Last position:
Schwarz IT KG
- Migration of the software development process of a medical technology software to C/C++ package manager Conan and development of macOS-specific system components
Abdelrahman Hewala
Last position:
Research Assistant (WHK), FPGA Development – BrassSense Project at HAW Hamburg / Prof. Peter Schulz
- Real-time tone detection on FPGA (~20 ms latency target) using a filter bank architecture with a fuzzy-logic decision stage, avoiding FFT due to its window-length/frequency-resolution tradeoff.
- Responsible for system integration and architecture.
Kacper Kowalski
Last position:
Author
Seqnaut and Sycosm (WIP) – Embedded Audio DSP & Synthesis Platform
- Embedded audio DSP framework — synthesizers, effects, drum machines; modular audio graph
- Sequencing: PianoRoll, StepGrid, MasterClock; 8-voice polyphonic synth; CLI + OSC
- Transient Detector — dual-envelope adaptive threshold, guitar attack detection
- Hardware: Teensy 4.1, custom AFE design tapping BOSS GX-100; MIDI FX integration
Label: C++23, C, Python, CMake, FreeRTOS, Teensy 4.1 (ARM Cortex-M7), Teensy Audio (Stoffregen), DaisySP, I2S/SAI, OSC, MIDI
Peter Jehle
Last position:
Interim Teamlead at Somnomedics
- Interim Teamlead to setup a project with STM32 and NORA Bluetooth module.
- Customer is planning new hardware to replace existing hardware with Bluetooth communication instead cable connection.
- Project was already started but the requirements were not defined.
- System based on STM32 and Nora B106 CPU.
- Analyzing the existing available code base.
- Checking for possible solutions to get the project working.
- Defining the requirements.
- Applying some rules to improve the team communication.
- Working with the NRF tools to get the custom board based on NORA B106 (NRF5340) working.
- Implementation of a simple device communication by Bluetooth.
- Preparation of documentation.
- Leading communication meetings.
- Conducted discussions with customer.
- Tools used: JIRA, OneNote, Git, Confluence, Nordic NRF, Nora B106.
Valentin Reuter
Last position:
Freelance Hardware Development Engineer at Swarm Biotactics
PCB design with Altium, MCU Programming, Prototyping
Oleksii Kvasnikov
Last position:
Software developer (freelance) at Sasse Elektronik GmbH
- Built custom Yocto Linux image with Docker support (NXP i.MX 6ULL)
- Developed distributed Python application (web interface, gas/temp control)
- Designed multiple docker containers for production and development
- Wrote documentation per IEC 62304
Roland Rathmann
Last position:
Support in Ongoing Project at Automotive Supplier
- closing the safety case
- creation of meaningful traceability matrices and targeted test expansion
- transferring requirements into other database systems
- structuring the requirements, assessing their completeness, and setting up new test cases based on use-case–based test strategies and the results of internal traceability matrices
- partial automation of tasks within a requirement assessment tool
- tools and languages: MS Teams, reqIF, Enterprise Architect, Codebeamer, proprietary tools for creating and evaluating traceability matrices (approx. 1000 x 1000)
Arne Hendricks
Last position:
Embedded Fullstack Developer at IoT / Infrastructure Automation Sector
- Analysis of legacy codebase and identification of architectural issues, implementing improvements in coordination with the Product Owner.
- Development of clean, efficient, and fully documented code following established software engineering practices and standards.
- Analysis of Erlang components in backend and device layers to provide recommendations for ensuring stable system operation.
- Setup and optimization of CI/CD pipelines on client infrastructure, including testing, debugging, and certificate management quality assurance.
- Participation in planning, design, and implementation of epics and stories according to Product Owner specifications.
- Technical consultation for Product Owner regarding Erlang codebase management and best practices.
- Collaboration with Product Owner, Scrum Master, and development team to ensure timely delivery of features.
- Elixir & Phoenix + PostgreSQL
- Erlang
- IoT
- CI/CD
- Git
- Agile/Scrum
- Docker
- Kubernetes
- Frontend (VueJS)
- Embedded Devices
Discover over 15,000 top freelancers
Statistics of experts using I2C
Aggregated from the professional profiles of matched freelancers.
Experience
19 years
Position duration
3 years
Positions per freelancer
12
Top business areas
Product Development, Information Technology, Quality Assurance
Top industries
Manufacturing, Information Technology, Automotive
Certification focus areas
Information Technology, Product Development, Quality Assurance
Bachelor's degree or higher
94%
Master's degree or higher
76%
Doctorate
12%
Certifications per freelancer
2
Most common languages
English, German, 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 I2C
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
I2C basics
I2C, also written as I²C and called Inter-Integrated Circuit, is a simple serial bus for short-range communication between chips on the same board. It is common in embedded systems, sensors, displays, EEPROMs, RTCs, and power management parts.
Where it fits
Companies use I2C when many low-speed devices need to share a small number of wires. It is a natural choice for control and configuration tasks in consumer devices, industrial electronics, and lab equipment.
Typical work
- Add new I2C peripherals to firmware
- Set up address maps and register access
- Troubleshoot bus hangs, clock stretching, and pull-up issues
- Review schematics and board-level signal integrity
- Validate communication with logic analyzers and test tools
Tooling and stack
Strong specialists know the bus timing rules, pull-up sizing, voltage levels, and common controller APIs in embedded SDKs. They often work with datasheets, oscilloscopes, logic analyzers, and firmware built in C or C++.
When to bring in help
Bring in freelance expertise when a board is failing in bring-up, when a new sensor will not respond, or when a product needs support for several I2C devices at once. In Germany, this often comes up in hardware teams that need on-site board debugging or remote firmware support.
What strong experts deliver
Good professionals do more than make a device answer. They trace the fault from protocol to hardware, document the register flow, and leave stable code that other specialists can maintain. Clear communication matters as much as deep embedded knowledge.
Frequently asked questions
Quick answers to the questions that come up most around I2C.
I2C is used for short-distance communication between chips on the same board. It connects parts such as sensors, RTCs, EEPROMs, power controllers, displays, and other low-speed peripherals. Companies bring in specialists when they need reliable control and configuration paths inside embedded products.
I2C uses fewer wires than SPI, which makes it useful when many devices share one bus. It is slower than SPI and less suited to high-throughput data transfer, but it is easier to wire for simple control tasks. Compared with UART, I2C is a shared multi-device bus rather than a point-to-point link.
A strong I2C specialist usually knows embedded C or C++, register-level debugging, and board-level hardware basics. They should also understand pull-ups, voltage domains, timing limits, and how to read device datasheets. Experience with logic analyzers and oscilloscopes is a major plus.
A project usually needs I2C expertise when hardware bring-up gets stuck, when devices fail to detect, or when communication breaks under real load. It also helps when a product has many peripherals sharing one bus and the design needs clean integration. Freelance support is useful for short, focused debugging or for delivery gaps in an existing team.
I2C work can often start remotely if the expert has schematics, firmware access, logs, and bus traces. On-site help is better when the issue depends on physical boards, signal integrity, or hands-on probing. In Germany, many teams use a mix of remote analysis and on-site board bring-up.
A good I2C freelancer explains faults clearly, ties symptoms to probable causes, and proves fixes with measurements or reproducible tests. Look for evidence of board bring-up, peripheral integration, and debugging across both firmware and hardware layers. Clean documentation is a strong sign of quality.
I2C and I²C refer to the same bus protocol; Inter-Integrated Circuit is the full name. Searchers often use the acronym, the symbol form, or the full spelling, so a specialist should recognize all three. In practice, the work and the tooling are the same.
I2C specialists are often needed for sensor integration, board bring-up, peripheral driver work, and validation of embedded control paths. They also help when products need multiple devices on one bus without address conflicts or timing problems. This shows up in wearables, industrial controllers, and test hardware.
The average hourly rate of freelancers in Germany who have used I2C in their recent projects is 89 €, which corresponds to a daily rate of about 709 € based on an 8-hour working day.
Of the freelancers in Germany who have used I2C in their recent projects, 94% hold at least a Bachelor's degree, 76% hold at least a Master's degree, and 12% hold a doctorate.
On average, freelancers in Germany who have used I2C in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 3 years.
The most common languages among freelancers in Germany who have used I2C in their recent projects are English (98%), German (97%), and French (15%).
The most common industries among freelancers in Germany who have used I2C in their recent projects are Manufacturing (81%), Information Technology (76%), and Automotive (64%).
The most common business areas among freelancers in Germany who have used I2C in their recent projects are Product Development (100%), Information Technology (95%), and Quality Assurance (86%).
Main locations of FRATCH Experts, who have recently used I2C
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 
Munich Request a free demo
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Philipp Thomaschewski
FRATCH CEO
