SAE J1939 Experts in Germany
for reliable vehicle networks, matched in minutes with vetted and available freelancersHire experts who design and troubleshoot SAE J1939 communication, CAN-based control systems and diagnostic workflows for commercial vehicles and mobile machinery. Get precisely matched with vetted, available freelancers who can contribute remotely or on site.
Meet FRATCH Experts in Germany, who have recently used SAE J1939
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
S.r.k. C.
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
Tilmann S.
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
Karl S.
Last position:
Software Consultant, Architect, and Developer at Forklift Truck Manufacturer
Consulting in all areas of software development such as architecture, inter- and intra-process communication, end-to-end validation
Monitoring and measuring resources such as runtime and memory usage
Specification of interface and implementation patterns as well as high-level and detailed specifications
Design and implementation of functional and safety software
Specification of unit tests and support of the integration and software tests in the HIL test department as part of software validation
Development of platform-independent control and regulation software for a fuel cell system (multi-processor 16-bit and multi-core 32-bit)
Development/concept design of state machines
Development/concept design of control algorithms
Development/concept design of inter-process safety communication
Development/concept design of basic software components for parameter, characteristic curve, and error management
Development of vehicle communication based on CAN
Development/concept design of commissioning, maintenance, and service interfaces via CAN and UDS diagnostics
Conducting validation and supporting external validation
Creating specifications for testing
Reshmi S.
Last position:
Software Engineer at Aumovio Engineering Services (formerly Continental Engineering Services)
- Programming: C/C++, Python, Embedded C, MATLAB
- Feature Owner for SecOC and FvM, leading development, integration, and validation
- Strong ECU hardware understanding for debugging
- Integrated AUTOSAR security modules: CSM, Crypto, CryIf, and HSM
- Hands-on experience with AUTOSAR BSW and MCAL configuration
- Implemented Secure Boot with DMA on Chorus MCU, improving boot performance
- Designed HSM key management and UDS-based key verification features
- Developed Python automation scripts to improve validation efficiency
- Performed ISO 26262 and ASPICE compliant development and testing
- Implemented diagnostics (DIDs, DTCs) for fault detection and reliability
- Strong knowledge of 32-bit MCU architectures and real-time systems
- Proficient in embedded C, compiler/debugger tools, and CANoe
- Experience with TLS, IPsec, key management, and Ethernet switch configuration
- Created architecture and system documentation for cross-team alignment
- Supported production ECU flashing and large-scale deployments
- Conducted functional safety-related tests to ensure system reliability
Yoav N.
Last position:
Freelance Software Architect at Freelance Consultant
- Various small consultations, e.g. concepts and arcitectures.
- Updating my Matlab, Linux, IPv6, Cyber-Security, C++ (up to 23) and Python skills.
Alexander R.
Last position:
PLC CPU Migration for Oxygen Control at Abwasserentsorgung Schöntal
- Migration of a Wago PLC from CODESYS V2 to CODESYS V3.5
- Porting existing software from V2 to V3.5
- Performing various software adjustments
- Creating a new web visualization (WebVisu)
- Installing the new controller and commissioning on site
- Updating the wiring diagrams
Discover over 15,000 top freelancers
Statistics of experts using SAE J1939
Aggregated from the professional profiles of matched freelancers.
Experience
20 years
Position duration
1.2 years
Positions per freelancer
19
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Automotive, Manufacturing, Information Technology
Certification focus areas
Information Technology, Product Development, Logistics
Bachelor's degree or higher
100%
Master's degree or higher
33%
Certifications per freelancer
2
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 SAE J1939
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.
SAE J1939 experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Automotive (86%)
- Manufacturing (71%)
- Information Technology (57%)
- Agriculture (43%)
- Healthcare (43%)
- Aerospace and Defense (29%)
- Energy (29%)
- Telecommunication (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Vehicle communication standard
SAE J1939 is a CAN-based communication standard for heavy-duty vehicles and mobile equipment. It defines message formats, addressing, parameter groups and diagnostic behavior so electronic control units can exchange consistent data. The standard is common in trucks, buses, agricultural machinery, construction equipment and industrial power systems.
Core network work
Specialists use SAE J1939 to plan, integrate and maintain distributed vehicle networks. Their work can cover:
- Defining parameter groups, source addresses and message priorities
- Configuring CAN interfaces, cabling, termination and network timing
- Integrating control units, sensors, displays and gateways
- Decoding traffic and tracing communication faults
- Implementing diagnostic messages and fault handling
Ecosystem and tooling
Strong professionals combine J1939 knowledge with CAN fundamentals and embedded software. They work with transport protocol functions, address claim procedures, diagnostic messages, proprietary parameter groups and database descriptions. Typical tools include CAN analyzers, bus monitors, signal databases, test benches and hardware-in-the-loop environments. Familiarity with AUTOSAR, bootloaders or telematics can add value where the vehicle network connects to wider systems.
When companies need support
Companies often bring in freelance expertise during a new vehicle program, control-unit integration or retrofit. Specialists can help when an existing network is poorly documented, intermittent faults are difficult to reproduce or a supplier uses proprietary messages. In Germany, projects may involve close coordination with manufacturing, testing and field-service teams, with a mix of remote analysis and on-site vehicle work.
Deliverables that matter
A capable SAE J1939 professional turns network behavior into usable engineering outputs. Deliverables may include message and signal specifications, interface definitions, diagnostic strategies, test cases, trace analyses and integration reports. They can also prepare commissioning procedures, support supplier reviews and document decisions so future teams can maintain the system without relying on informal knowledge.
Signs of quality
Look for professionals who can explain both the standard and the physical behavior of a real CAN bus. A strong specialist distinguishes standard parameter groups from proprietary data, understands address conflicts and transport protocol limits, and validates assumptions with traces rather than guesswork. Relevant experience should match the vehicle domain, safety expectations, toolchain and required collaboration style. Clear documentation and reproducible tests are as important as a working integration.
Frequently asked questions
Curious about SAE J1939? Here are the answers that come up again and again.
SAE J1939 is used to exchange data between electronic control units in heavy-duty vehicles and mobile machinery. It carries information such as engine status, transmission data, vehicle speed, emissions-related signals and diagnostic messages over a CAN network.
SAE J1939 builds on CAN but adds a structured higher-level communication model. It defines parameter groups, source addressing, transport protocols and diagnostic conventions, making it better suited to complex commercial-vehicle networks than raw CAN alone.
A strong SAE J1939 specialist usually understands CAN physical layers, embedded software, control-unit integration and vehicle diagnostics. Experience with CAN tools, signal databases, AUTOSAR, telematics or hardware-in-the-loop testing can be important depending on the project.
Bring in SAE J1939 expertise when a vehicle network needs to be designed, integrated, decoded or tested and internal knowledge is limited. Freelance specialists are also useful for supplier integration, difficult bus faults, retrofit programs and documentation of undocumented proprietary messages.
The right level of SAE J1939 experience depends on the scope and risk of the work. A simple trace review may need focused protocol knowledge, while a new control-unit integration calls for a professional who has handled network design, diagnostics, testing and the relevant vehicle domain.
SAE J1939 analysis, database work, software changes and test preparation can often be handled remotely from Germany. Physical commissioning, harness checks and vehicle troubleshooting may require on-site access, so teams should agree early on equipment access, trace sharing and travel needs.
Ask a SAE J1939 specialist to explain message decoding, address claim behavior, transport protocols and diagnostic handling using a concrete example. Review the clarity of their specifications, trace evidence, test coverage and approach to separating standard signals from proprietary data.
A useful SAE J1939 brief identifies the vehicle or machine domain, control units, CAN interfaces, available databases, expected deliverables and testing conditions. It should also state whether the work covers standard messages, proprietary parameter groups, diagnostics, on-site commissioning or remote support.
The average hourly rate of freelancers in Germany who have used SAE J1939 in their recent projects is 93 €, which corresponds to a daily rate of about 741 € based on an 8-hour working day.
Of the freelancers in Germany who have used SAE J1939 in their recent projects, 100% hold at least a Bachelor's degree and 33% hold at least a Master's degree.
On average, freelancers in Germany who have used SAE J1939 in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 1.2 years.
The most common languages among freelancers in Germany who have used SAE J1939 in their recent projects are German (100%), English (100%), and French (14%).
The most common industries among freelancers in Germany who have used SAE J1939 in their recent projects are Automotive (86%), Manufacturing (71%), and Information Technology (57%).
The most common business areas among freelancers in Germany who have used SAE J1939 in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (100%).
Main locations of FRATCH Experts, who have recently used SAE J1939
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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