CAPL Experts in Stuttgart
matched in minutes by AIHire experts who create CAPL test modules, simulate ECU behavior and automate CANoe test workflows across CAN, LIN, FlexRay and automotive Ethernet. FRATCH connects you with precise matches from vetted, available freelancers.
Meet FRATCH Experts in Stuttgart, who have recently used CAPL
Matthias S.
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
Jochen M.
Last position:
Technical Project Lead – Software Development at IT Security (Defense) / CyberSecurity
Technical project lead for the software testing subproject in the development of encryption systems (tactical crypto devices).
Test monitoring
Test specification
Software test implementation
Schedule planning
Code reviews
Team leadership
Test team resource planning
Test team coordination
Coordination of overall project flow
Stakeholder management
Report creation
Reporting to executive management
Delivered testing milestones on schedule, ensuring timely integration with development.
Improved test team efficiency by standardizing workflows and reporting.
Ensured compliance with Common Criteria (ISO/IEC 15408).
Alban T.
Last position:
C/C++ Developer on AIX Systems for SAP Kernel System Integration at IBM Research and Development
- AIX/Linux system administrator: deployment of LPARs (Logical Partitions) for SAP Kernel Development
- C/C++ SAP kernel development and integration to SAP HANA Database
- C/C++ programming and software integration, support for SAP kernel on AIX system; development and testing on SAP VDI
- Example: development of the ABEC Tool (AIX Build Environment Checker) to create SAP build environments for debugging process and benchmarking
- Benchmarking and test execution of SAP kernels (test from the communication to the SAP HANA Database and to SAP NetWeaver) on AIX
- Automate the SAP kernel build via Jenkins and benchmarking over crontab jobs
- New C/C++ compiler design and testing (based on Clang++ and LLVM)
- Customer ticket handling to resolve SAP kernel bugs and build failures
- SAP kernel development with Rust programming language, migrating some sub-kernel projects from C/C++ to Rust because of Rust's memory safety model, ownership system, and concurrency features
- Refactoring selected components in Rust and integrating them with existing C++ codebase via FFI
Michael B.
Last position:
Developer/Consultant at Fresenius Medical Care
- Development of automated end-of-line tests (functional tests) for dialysis machines on a PLC test bench in a production environment
- Introduction of new technology based on Vector vTestStudio, CANoe, and Siemens S7 PLC
- Creating test concepts
- Implementing test cases and libraries in CAPL and C#
- Touch screen emulation and proprietary RPC (Remote Procedure Call) via CAN
- Connecting to the PLC (Siemens Simatic)
- Defining interfaces for device communication (vCDL)
- Defining user interfaces and linking to the frontend (JSON)
- Agile work using DevOps (Azure)
- Skills: CAPL, .NET, C#, vCDL, CANOpen, DevOps, PLC
- Tools used: Vector CANoe 18, vTestStudio 4, MS Azure DevOps, MS Visual Studio 2022, Mosquito MQTT, Git, Siemens TIA Portal
Ilhan C.
Last position:
Senior Battery Systems Expert at Freelancer
400V 50A LFP (LiFePO4) 20 kWh home PV solar hybrid ESS energy storage system with inverter, MPPT, charger and battery pack
ESS systems testing and battery systems consultancy for Senec GmbH – Leipzig, Germany
48V 100A and 60V 120A Li-Ion battery pack design and BMS integration project with direct liquid immersion cooling technology for industrial mobile machinery battery pack at HyperX GmbH – Kornwestheim, Germany
Okan A.
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
Discover over 15,000 top freelancers
Statistics of experts using CAPL
Aggregated from the professional profiles of matched freelancers.
Experience
23 years (Germany: 20 years)
Position duration
1.3 years (Germany: 3.4 years)
Positions per freelancer
14 (Germany: 12)
Top business areas
Product Development, Quality Assurance, Information Technology
Top industries
Automotive, Manufacturing, Healthcare
Certification focus areas
Product Development, Information Technology, Logistics
Bachelor's degree or higher
100%
Master's degree or higher
60% (Germany: 65%)
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 Stuttgart 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 Stuttgart using CAPL
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.
CAPL 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 (100%)
- Healthcare (50%)
- Information Technology (50%)
- Aerospace and Defense (33%)
- Education (17%)
- Energy (17%)
- Banking and Finance (17%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
CAPL in automotive testing
CAPL, short for Communication Access Programming Language, is Vector’s scripting language for automotive network simulation and testing. It is mainly used within CANoe and related Vector tools to model electronic control unit behavior, generate bus traffic and verify communication across vehicle networks.
Networks and systems
CAPL specialists work with the protocols and interfaces found in modern vehicles. Their deliverables can include:
- CAN and CAN FD message handling
- LIN, FlexRay and automotive Ethernet simulations
- ECU restbus models and diagnostic sequences
- Automated tests for signals, events and timing
- Gateway and network-management validation
Tools and adjacent skills
Strong CAPL work depends on more than syntax. Professionals use CANoe, CANalyzer, Vector databases and panels, while connecting test logic with DBC files, AUTOSAR concepts, UDS diagnostics and hardware interfaces. Knowledge of Python, C, CI pipelines and requirements-based testing is valuable when CAPL automation must run beyond a local workstation.
When companies hire specialists
Companies bring in freelance CAPL expertise when a vehicle program needs test capacity, a bus simulation must be extended or an existing test environment has become difficult to maintain. In Stuttgart, this often supports automotive suppliers, mobility companies and manufacturers working across distributed teams. Remote delivery is practical for scripting and review; lab access may still require on-site collaboration.
Project deliverables
A specialist may design a test architecture, implement event-driven CAPL modules, create diagnostic testers or migrate legacy test cases. They can also connect CANoe measurements with reporting systems, investigate intermittent bus behavior and document reusable test components. Clear requirements, network descriptions and access to the target setup help avoid delays.
What quality looks like
Good CAPL professionals write modular, readable scripts and understand the timing model behind bus events. They separate test data from logic, handle simulated and real nodes consistently, and make failures easy to reproduce. The best specialists explain coverage, limits and assumptions clearly, then verify results against requirements rather than treating a passing test as proof of complete system quality.
Frequently asked questions
The facts hiring teams ask for most often when it comes to CAPL.
CAPL is used in Vector CANoe and related tools to simulate ECUs, generate network traffic and automate tests. It supports validation of CAN, LIN, FlexRay and automotive Ethernet behavior, as well as diagnostics, gateways and restbus models.
CAPL is closely integrated with CANoe’s event model, measurement environment and automotive network databases. Python is often better for external orchestration and reporting, while C is suited to embedded production software; CAPL is usually the practical choice for test logic that must react directly to bus events.
CAPL work benefits from knowledge of CANoe, CANalyzer, DBC files, UDS, diagnostics and ECU communication. Experience with AUTOSAR, CAN FD, automotive Ethernet, Python, version control and continuous integration can make the specialist more effective across the full test workflow.
CAPL projects vary from extending a few test cases to designing a complete simulation and validation setup. The right level of experience depends on network complexity, diagnostic scope, hardware access and whether the specialist must define the test architecture or only implement existing requirements.
CAPL scripting, test design, code review and result analysis can often be handled remotely from Stuttgart or elsewhere. On-site work may be needed when the assignment depends on vehicle hardware, bus interfaces, lab equipment or restricted development environments.
CAPL quality is visible in modular event handling, clear naming, controlled timing and reproducible test results. Ask candidates to explain how they manage test data, simulated nodes, diagnostics, error reporting and traceability to requirements rather than reviewing syntax alone.
CAPL can drive repeatable regression tests in CANoe and can be combined with test modules, reporting and external automation. A capable specialist will structure the suite so that tests remain stable when network descriptions, ECU variants or signal definitions change.
Communication Access Programming Language, commonly called CAPL, is designed around automotive communication events and Vector’s measurement tools. Its value comes from direct access to messages, signals, timers and diagnostic interactions inside a network simulation, rather than from general-purpose application scripting.
The average hourly rate of freelancers in Stuttgart, Germany who have used CAPL in their recent projects is 97 €, which corresponds to a daily rate of about 775 € based on an 8-hour working day.
Of the freelancers in Stuttgart, Germany who have used CAPL in their recent projects, 100% hold at least a Bachelor's degree and 60% hold at least a Master's degree.
On average, freelancers in Stuttgart, Germany who have used CAPL in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 1.3 years.
The most common languages among freelancers in Stuttgart, Germany who have used CAPL in their recent projects are German (100%), English (100%), and French (33%).
The most common industries among freelancers in Stuttgart, Germany who have used CAPL in their recent projects are Automotive (100%), Manufacturing (100%), and Healthcare (50%).
The most common business areas among freelancers in Stuttgart, Germany who have used CAPL in their recent projects are Product Development (100%), Quality Assurance (100%), and Information Technology (83%).
Main locations of FRATCH Experts, who have recently used CAPL
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 
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