UART Experts in Germany
matched in minutes from over 15,000 CVs with AIWork with specialists who configure asynchronous serial interfaces, build custom bare-metal peripheral drivers, and integrate hardware communication pipelines, precisely matched with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used UART
Giuseppe A.
Last position:
Embedded Software Development at Inheco
- AI Integration (LLM & RAG): Designed and built an internal intelligent RAG system (Retrieval-Augmented Generation) based on LLMs, n8n, and vector data to automatically analyze technical documents and error logs.
- Design & Implementation: Designed a robust RS-232/UART communication interface for an SBC-based embedded device used to control medical shaker systems.
- Architecture & Protocol Design: Built a highly maintainable software structure (OOP, SOLID) and defined resilient, hardware-level communication protocols, including multithreading and advanced error handling.
- Quality Assurance & DevOps: Automated testing with xUnit, ran integration tests directly on the hardware target, and maintained technical documentation to strict medical technology standards via Azure DevOps.
Label: C#, .NET, LLMs, RAG, n8n, RS-232, UART, Multithreading, async/await, xUnit, gRPC/protobuf, Blazor, MudBlazor, EF Core, Visual Studio 2026, Azure DevOps
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
André H.
Last position:
Linux IT Admin at ReiserST
- Development and maintenance of IT architectures with embedded Linux systems.
- Designing, implementing, and optimizing backend applications and script-based solutions.
- Analyzing and resolving issues, including troubleshooting and user support.
- Developing and implementing security concepts for cloud solutions.
- Administering networks (DHCP, DNS, NTP, VPN).
- Technologies: Linux, PowerShell, Bash, Python, Ansible, Kubernetes, GitLab CI.
- Methods: Kanban.
Kai W.
Last position:
Schwarz IT KG
- Migration of the software development process for medical technology software to the C/C++ package manager Conan and development of macOS-specific system components
Rüdiger S.
Last position:
Consultant in Functional Safety: I3 Confirmation Reviews according to ISO 26262:2018 at VW
Conducting I3 Confirmation Reviews for all work products at item (system) level that require I3 review, in accordance with ISO 26262:2018: Impact Analysis, Safety Plan, Functional Safety Concept, Technical Safety Concept, FMEA, FTA, DFA, Integration and Test Strategy, Safety Validation Specification, Safety Case
Creating/updating review criteria for conducting I3/I2 Confirmation Reviews for all work products based on ISO 26262:2018
Discussing findings with the specialist departments as needed
Coordinating findings and review criteria with the responsible customer department
Training new internal employees to conduct I3 Confirmation Reviews
ISO 26262
Requirements Analysis
Failure Analysis (FTA, FMEA, DFA)
Microsoft Office
Jira
Confluence DevStack
Document Management System (DMS)
Muhammad J.
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.
Abdelrahman H.
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.
Steffen K.
Last position:
Freelancer – Software Development at LightnTec GmbH
- Implementation of an RGBW function on a microcontroller to control flexible LED matrix displays in Embedded C
- Implementation of various algorithms for calculating a white channel
- Extension of a web interface
Kacper K.
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
Valentin R.
Last position:
Freelance Hardware Development Engineer at Swarm Biotactics
PCB design with Altium, MCU Programming, Prototyping
Shubham S.
Last position:
Work Student, System Testing at Magna Electronics Europe
Execution of test procedures based on the test plan for system testing of ECU & camera sensor
Requirements analysis and test case design using PTC Windchill
Diagnostics, software updates at ECU level, calibration with ODIS and Lauterbach
Data collection, annotation, analysis, storage and reprocessing
Checking logs, test result analysis, bug logging and test report creation following ASPICE
Creation of the test environment on bench (RBS) or vehicle according to test scenarios
Design, building and troubleshooting of automated test setups including multimeter and circuits
Development of automated test procedures to save time, cost and vehicle dependency
Recording of data with recording tool chain and injection of data using Hardware-in-the-Loop setup
Automated creation of test result reports via PyCharm Python scripts utilizing Pandas, Numpy and Matplotlib
Use of hardware including X2E data logger, Technica Bus Tapping hardware, Star Corporation and Vector tools
Jaya V.
Last position:
Software Engineer at Bosch Global Software Technologies Limited
- Developed AUTOSAR applications using Eclipse RCP for RTA-CAR AUTOSAR stack from ETAS
- Collaborated with Platform and Isolar-A teams on ASW development and testing workflows
- Implemented UI automation testing using Java SWTBot framework, enhancing regression coverage
- Built microservices-based applications using Java, Spring Boot, and Angular for internal tooling
- Enhanced AUTOSAR toolchain reliability through cross-team collaboration in development and testing
Viktor H.
Last position:
Freelance Software Developer at Thomas Magnete GmbH
- Development of embedded software for a valve prototype with LIN interface.
- Extension of the software architecture in Rhapsody.
- Implementation of the valve control as a state machine in Rhapsody.
- Implementation of a LIN stack for communication with the PLIN-LDF test environment.
- Integration & commissioning of the built-in bootstrap loader.
- MCU: Infineon TLE9867.
- IDE: Keil µVision5.
- Project management: GitLab.
- Architecture: Rhapsody Architect.
- CAN adapter: PEAK PLIN-USB.
Arne H.
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
Alexander D.
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
Discover over 15,000 top freelancers
Statistics of experts using UART
Aggregated from the professional profiles of matched freelancers.
Experience
16 years
Position duration
2.2 years
Positions per freelancer
10
Top business areas
Product Development, Quality Assurance, Information Technology
Top industries
Information Technology, Manufacturing, Automotive
Certification focus areas
Information Technology, Product Development, Quality Assurance
Bachelor's degree or higher
100%
Master's degree or higher
88%
Doctorate
12%
Certifications per freelancer
1
Most common languages
English, German, Spanish
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 UART
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.
UART experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (72%)
- Manufacturing (69%)
- Automotive (64%)
- Healthcare (36%)
- Aerospace and Defense (26%)
- Education (26%)
- Energy (26%)
- Telecommunication (21%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Hardware-Level Serial Communication
Universal Asynchronous Receiver-Transmitter interfaces provide point-to-point asynchronous serial communication between embedded microcontrollers and external peripherals. The protocol transmits data frame by frame without a shared clock line, relying on agreed baud rates, start and stop bits, and optional parity checking to ensure stream integrity across physical lines.
Core Engineering Capabilities
- Bare-metal peripheral driver creation on ARM Cortex-M, RISC-V, and AVR architectures
- Ring buffer memory design for interrupt-driven and direct memory access operations
- Physical transceiver integration for standard RS-232, RS-422, and industrial RS-485 networks
- Diagnostic command shell implementation and telemetry stream logging
Typical Project Applications
Engineering teams rely on serial communication for bootloader interfaces, host-to-module links, and direct board bring-up. The interface bridges microcontrollers with cellular modems, GNSS receivers, Bluetooth transceivers, and motor controllers. In Germany, industrial automation and automotive testing facilities depend heavily on reliable serial buses for long-run machinery diagnostics.
Diagnosis and Signal Quality
- Analyzing framing errors, buffer overruns, and noise using digital storage oscilloscopes
- Validating clock drift tolerances between communicating system components
- Establishing multi-drop bus contention management on RS-485 physical layers
- Stress-testing custom binary framing under heavy interrupt load conditions
When Projects Require External Specialists
Organizations bring in dedicated professionals during critical hardware bring-up phases or when experiencing intermittent frame dropping in high-throughput streams. Contract support proves crucial when retrofitting modern RTOS platforms to legacy machinery or optimizing DMA transfer routines to alleviate microcontroller core utilization during mission-critical tasks.
Attributes of Senior Practitioners
Experienced professionals write deterministic, reentrant C and C++ firmware without blocking delay routines. They isolate hardware timing defects using logic analyzers and design robust packetization mechanisms, including CRC checksums and state-machine parsers, protecting embedded devices against corrupted frames and line reflections.
Frequently asked questions
Not sure where to start with UART? These answers cover the essentials.
A UART peripheral facilitates low-overhead asynchronous data exchange between microcontrollers and peripheral sensors or wireless modems. It also serves as the fundamental transport layer for interactive debug consoles, firmware flash bootloaders, and command-line interfaces during hardware development.
Unlike synchronous buses, universal asynchronous receiver-transmitter links omit an explicit clock line and operate over only two signal wires for full-duplex transmission. While SPI and I2C achieve faster master-slave transfers on a single PCB, serial communication excels across longer physical distances when coupled with transceivers.
Professionals working with UART need strong proficiency in embedded C or modern C++, deep familiarity with RTOS queue mechanics, and mastery of DMA controllers. Hands-on expertise with logic analyzers, oscilloscopes, and hardware circuit schematics is equally essential for signal verification.
Much of the low-level driver architecture and state-machine firmware for UART can be constructed in remote environments using simulation and remote hardware test benches. However, initial board bring-up, signal integrity testing, and EMC compliance often require periodic on-site collaboration at client labs in Germany.
Specialists address dropped bytes in a UART pipeline by swapping interrupt-per-byte handling for direct memory access coupled with circular ring buffers. They also implement hardware flow control using RTS and CTS lines to pause data transmission before memory buffers saturate.
Manufacturing equipment, rail transportation, medical technology, and automotive telemetry across Germany rely on UART interfaces linked to differential physical transceivers. These robust standards provide resilient long-distance signaling inside electrically noisy factory environments.
Look for experience writing non-blocking peripheral drivers, custom packet framing protocols with error checking, and circular buffer management. A capable specialist discussing asynchronous serial interfaces will readily explain strategies for mitigating clock jitter and handling framing errors under heavy CPU load.
A specialist delivering UART integration provides modular driver source code, register configuration headers, and automated test benches. Deliverables should also include bus timing captures, transceiver circuit layout notes, and protocol specifications documenting packet structures and error codes.
The average hourly rate of freelancers in Germany who have used UART in their recent projects is 85 €, which corresponds to a daily rate of about 682 € based on an 8-hour working day.
Of the freelancers in Germany who have used UART in their recent projects, 100% hold at least a Bachelor's degree, 88% hold at least a Master's degree, and 12% hold a doctorate.
On average, freelancers in Germany who have used UART in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Germany who have used UART in their recent projects are English (100%), German (95%), and Spanish (15%).
The most common industries among freelancers in Germany who have used UART in their recent projects are Information Technology (72%), Manufacturing (69%), and Automotive (64%).
The most common business areas among freelancers in Germany who have used UART in their recent projects are Product Development (100%), Quality Assurance (90%), and Information Technology (87%).
Main locations of FRATCH Experts, who have recently used UART
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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FRATCH CEO
