SAE J1939 Experts in Germany
for connected heavy-duty systems, matched in minutes from over 15,000 CVsHire experts who design, integrate and troubleshoot SAE J1939 communication for commercial vehicles, agricultural machinery and industrial equipment. FRATCH matches you quickly and precisely with vetted, available freelancers who fit your technical needs.
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
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.
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
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 19 Sep 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 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 19 Sep 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
SAE J1939 is a higher-layer communication protocol built on CAN for heavy-duty vehicles and mobile machinery. It standardizes how electronic control units exchange signals, diagnostics and network management data. The protocol is common in trucks, buses, construction equipment, agricultural machinery, engines and off-highway systems.
Core capabilities
Experts work with the protocol’s parameter groups, source addresses, transport protocol and diagnostic messages. They interpret signal definitions, configure network behavior and connect control units from different suppliers. Strong knowledge of CAN physical layers, embedded software and vehicle electronics is essential for reliable integration.
Ecosystem and tools
Projects often combine SAE J1939 with CAN hardware, embedded controllers and testing environments. Professionals may use bus analyzers, simulation tools, database files and diagnostic interfaces to inspect traffic and reproduce faults.
- Decode and validate parameter group messages
- Configure address claiming and network management
- Test transport protocol communication
- Integrate diagnostics with vehicle service tools
Typical project work
Companies bring in freelance expertise when a new control unit must communicate with an existing vehicle network, or when field failures are difficult to reproduce. Typical deliverables include communication specifications, signal mappings, embedded implementations, test plans, captured bus analyses and documented diagnostic procedures.
- Connect engines, transmissions and instrument systems
- Integrate telematics and fleet data gateways
- Validate displays, controllers and sensor data
- Investigate intermittent CAN and J1939 faults
Why external expertise
A short-term specialist can help during prototype integration, supplier coordination, commissioning or production troubleshooting. In Germany, this expertise is relevant to manufacturers and suppliers serving transport, agricultural, construction and industrial equipment markets. Remote analysis works well for specifications, software and trace review, while commissioning and vehicle tests may require on-site work.
Signs of quality
Strong professionals distinguish application-layer faults from wiring, termination and signal-integrity problems. They read traces systematically, verify timing and message ownership, and document assumptions instead of relying on trial and error. Look for experience with real vehicle networks, diagnostic workflows, conformance testing and clear communication across hardware, embedded software and systems teams.
Frequently asked questions
Curious about SAE J1939? Here are the answers that come up again and again.
SAE J1939 is used to exchange standardized control, status and diagnostic data between electronic control units in heavy-duty vehicles and mobile machinery. It supports applications such as engine control, transmission coordination, instrument displays, braking systems, telematics and service diagnostics.
SAE J1939 builds application rules on top of CAN, including message definitions, addressing, diagnostics and transport behavior. A CAN specialist may understand the physical network, but J1939 projects also require knowledge of parameter groups, source addresses and standardized vehicle data.
A strong SAE J1939 professional usually combines CAN bus analysis with embedded C or C++, microcontroller integration and vehicle electronics. Useful adjacent skills include diagnostics, bootloaders, telematics, Ethernet-based vehicle networks, test automation and tools for recording and simulating bus traffic.
The right level depends on the assignment. A J1939 specialist handling a signal mapping or trace review may need a narrower focus, while a professional responsible for a complete control-unit integration should understand network design, diagnostics, testing and commissioning in real vehicles.
Much SAE J1939 work can be done remotely, including specifications, software changes, database review and analysis of recorded traces. Hardware bring-up, vehicle commissioning and intermittent network faults may require access to the machine, either on site in Germany or through a local testing partner.
Bring in an SAE J1939 specialist when control units from different suppliers exchange incorrect data, diagnostics fail, or integration delays threaten testing and production. External expertise is also useful when an internal team knows CAN but lacks practical experience with heavy-duty vehicle communication.
Ask an SAE J1939 professional to explain a trace, identify the likely fault domain and describe how the conclusion would be tested. Quality work includes clear signal documentation, repeatable tests, careful separation of network and application issues, and evidence from real vehicle or bench setups.
Before engaging a SAE J1939 freelancer in Germany, clarify the vehicle or machine platform, available network documentation, required tools, data-access rules and testing location. Also agree whether collaboration is remote, on site or mixed, and whether communication with suppliers requires German, English or both.
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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