RS-232 Experts in Munich
in minutes with vetted specialists who keep serial systems reliableHire experts who handle RS-232 wiring, serial device integration, and troubleshooting for legacy and industrial equipment. They work on COM port settings, signal levels, and mixed hardware environments, with fast, precise matching to vetted, available freelancers.
Meet FRATCH Experts in Munich, who have recently used RS-232
Giuseppe A.
Last position:
Embedded Software Developer at Inheco
- AI Integration (LLM & RAG): Design and build of an internal intelligent RAG system (Retrieval-Augmented Generation) based on LLMs, n8n, and vector data for the automated analysis of technical documents and error logs.
- Design & Implementation: Design of a robust RS-232/UART communication interface for an SBC-based embedded device to control medical shaker systems.
- Architecture & Protocol Design: Implementation of a highly maintainable software structure (OOP, SOLID) and definition of hardware-close, resilient communication protocols including multithreading and advanced error handling.
- Quality Assurance & DevOps: Test automation using xUnit, integration tests directly on the hardware target, and maintenance of technical documentation according 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
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.
Paul P.
Last position:
Independent Consultant – Industry/ Embedded/ IoT at Self-employed
Consulting and support in the areas of sales/business/technology/development/marketing:
- Sales, Key Account Management
- Business Development, business/corporate development
- Partner management
- Program/project management
- Product management & marketing
- Technical marketing, content marketing
- New business, innovation and technologies
Until July 2021 active as advisor and consultant for Mixed Mode in the areas of Key Account Management, Project Management and Business Development.
From Q3/2021 successful delivery of various customer projects in the area of Business Development, corporate development, consulting, coaching, technical content management, sales and marketing:
- EMS service provider and PCB test house, inspection systems: revision of company portfolio and presentation. Integration of specialized distribution for optical inspection systems from Japan: content management, marketing, communication, web, sales automation, lead generation
- Full service marketing agency – technology marketing for industry: expansion of the existing B2B and B2C marketing portfolio with industrial and technology topics: content management, presentation and focus on "technical marketing", web, target market and customer analysis, lead automation, consulting
- Software product manufacturer & software development in the field of security for Embedded & IoT: company alignment and portfolio definition for an IoT and Embedded Security company with a SaaS solution for IoT device management: building a partner network to offer complete Embedded/IoT security solutions, technical content, company alignment and portfolio definition, strategy & planning, target market and customer analysis, product marketing/USPs for the security device management tool "IoT-Suite", standards and regulations for cyber resilience (e.g. CRA, NIS2, RED), web content, SEO, management of marketing and sales agencies, CRM, sales, presentations, trade fairs, congresses, building company webinars & events
- Software engineering service provider/system house for IoT, Embedded, web, mobile and desktop applications: business development, content creation, customer acquisition and sales
- Manufacturer of memory products with security features as an add-on: memory products in standard form factors (SD, CF, SSD...) are extended with security modules such as HSM, TPM or secure elements and thus offer users secure data storage, transfer and access. Also interesting as an upgrade or retrofit solution to meet the coming new regulations and requirements regarding cybersecurity such as CRA, RED and NIS2. Business & New Business Development for the area "Embedded IoT Solutions & Security", sales & marketing. Expansion of the pure semiconductor business to include security solutions and services. Interface between management, marketing, sales and product management. Building business partners, technology partners, system integrators and resellers from the Embedded, IoT, OT and IT environment. Creating reference designs/demos/lighthouse cases and proof of concepts for cross- and reference selling. Co-marketing with security partners. Technical content creation for web, sales and marketing, webinars, social media etc. Networking, participation in trade fairs, congresses and events. Lead generation, qualification, follow-up and conversion to customer. Product definition, USPs, features. Analysis of competitors, market positioning, target markets - strategy, concept and measures - go to market.
- Marketing agency group with sales and management consulting: consulting for companies on restructuring, market analysis and market entry, go-to-market concepts, customer acquisition and expansion, new customer generation, lead generation and management, concepts and execution of campaigns (web, mail, social media, phone outreach in person or with AI voice assistant, webinars...). Processing and managing customer product data for PIM product information and DAM data asset management systems. Focus on customers in the industrial and technology environment with products and services that need explanation.
Jiri S.
Last position:
Quality Manager/Test Management at Noriba GmbH
- Test concept creation
- Creation of test processes
- Coordination of TC development: stress tests, functional tests, performance tests, high data rate tests, integration tests, etc.
- HW testing: FPGA, RF
- Test automation and regression tests
- Ensuring 24/7 operation of the test system
- Analysis & reporting
- Regular coordination of the test team, meetings with other stakeholders
- Communication and coordination with stakeholders and the project manager
Daniel C.
Last position:
Founder & Managing Director at BotCraft GmbH
- Building the company with a focus on connectivity for IIoT and Industry 4.0, iRPA/process automation, advanced robotics and smart systems, sensors and services
- Project management and software architecture for IoT gateway development (since 2020) with protocol translation, IT/OT convergence and GRC
- Developing RPA bots for automating and monitoring industrial processes with an agent-based AI approach (since 2020)
- Implementing unsupervised clustering and anomaly detection for time series data in big data streaming pipelines (since 2021)
- Introducing a Docker-based release train for OTA updates with DevSecOps and CI/CD (since 2018)
Janybasha S.
Last position:
Diagnostic Software Developer at BMW Group
- Development of the vehicle communication stack in C using AUTOSAR tools for robust inter-module communication within the ECU
- Design, implementation and validation of functions for the electric powertrain, contributing to improved efficiency and reliability
- Definition and verification of system and software requirements, ensuring traceability and compliance with standards
- Collaboration with development partners in North Africa, coordinating architecture, interfaces and integration milestones
- Extension of the communication stack with enhanced security features, increasing resilience against unauthorized access and data manipulation
Discover over 15,000 top freelancers
Statistics of experts using RS-232
Aggregated from the professional profiles of matched freelancers.
Experience
22 years
Position duration
5 years
Positions per freelancer
10
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Automotive, Healthcare
Bachelor's degree or higher
100%
Master's degree or higher
100%
Doctorate
17%
Certifications per freelancer
1
Most common languages
German, English, Spanish
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 Munich 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 Munich using RS-232
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.
RS-232 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 (100%)
- Automotive (50%)
- Healthcare (50%)
- Transportation (50%)
- Manufacturing (50%)
- Telecommunication (50%)
- Biotechnology (33%)
- Government and Administration (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Serial links
RS-232 is the classic serial interface for point-to-point communication between computers and devices. It is still common in test benches, industrial machines, lab tools, POS systems, and service ports where simple, dependable data transfer matters.
Common use
Typical work includes:
- Connecting legacy hardware through a COM port
- Reading and sending data to instruments and controllers
- Keeping service access available on embedded systems
- Replacing fragile cabling or unclear pinouts
- Documenting handshakes, baud rates, and connector layouts
What specialists do
Strong RS-232 professionals do more than swap cables. They trace wiring, check voltage levels, confirm null modem or straight-through layouts, and solve issues caused by noise, poor grounding, or mismatched serial settings.
Tools and standards
The ecosystem often includes DB9 and DB25 connectors, USB-to-serial adapters, terminal software, oscilloscope checks, and related standards such as EIA-232 or TIA-232. In older documentation, you may also see “serial port” or “COM port” used instead of the standard name.
When to bring help
Companies usually bring in freelance expertise when an old device must keep working, a new system has to talk to serial hardware, or a field issue blocks production. In Munich, this often comes up in manufacturing, lab environments, building systems, and service work where on-site access to equipment is important.
What good work looks like
- Clear pin mapping and signal documentation
- Stable communication under real operating conditions
- Practical fixes for adapters and cable runs
- Clean handover notes for support teams
- Careful testing with the exact device in use
Frequently asked questions
Curious about RS-232? Here are the answers that come up again and again.
RS-232 is used for serial communication between two devices over short cable runs. Companies use it for lab instruments, industrial controllers, service ports, payment terminals, and other equipment that still relies on a simple COM port connection. It is common where reliability matters more than speed.
RS-232 is the electrical and signaling standard behind what many people call a serial port or COM port. In practice, those terms are often used interchangeably, especially in older documentation and device manuals. A specialist should still check the exact connector, pinout, and voltage levels before connecting anything.
RS-232 is simpler than USB and easier to troubleshoot, but it is usually limited to point-to-point links and shorter distances. Compared with RS-485, it is less suited for multi-drop industrial networks. Teams often choose it when they need compatibility with legacy hardware or a direct service interface.
A strong RS-232 specialist usually knows cable wiring, connector standards, terminal tools, and basic electrical testing. Experience with embedded systems, industrial automation, and protocol troubleshooting is also useful. If adapters are involved, knowledge of USB-to-serial chipsets and driver behavior helps a lot.
A RS-232 task can be simple or very tricky depending on the device and the fault. Basic cable setup may need only focused support, while recurring communication errors, legacy machines, or custom hardware interfaces call for deeper serial debugging experience. The key is proven hands-on work with the exact type of equipment.
Many RS-232 tasks can be handled remotely if the issue is in software, configuration, or documentation. On-site help in Munich is often better when someone must access physical equipment, inspect connectors, or test a live machine. For industrial or lab systems, direct access usually speeds things up.
Look for a RS-232 professional who asks about pinout, baud rate, parity, flow control, and the exact device model before proposing a fix. Good signs are clear test steps, practical documentation, and the ability to explain why a null modem, adapter, or grounding change is needed. Strong specialists verify the link with the real hardware, not just theory.
Yes, a good RS-232 expert often reads older manuals, service notes, and vendor-specific wiring guides. You may also see references to EIA-232 or TIA-232, which describe the same family of serial signaling in many contexts. This matters when the only available documentation is old or incomplete.
The average hourly rate of freelancers in Munich, Germany who have used RS-232 in their recent projects is 93 €, which corresponds to a daily rate of about 747 € based on an 8-hour working day.
Of the freelancers in Munich, Germany who have used RS-232 in their recent projects, 100% hold at least a Bachelor's degree, 100% hold at least a Master's degree, and 17% hold a doctorate.
On average, freelancers in Munich, Germany who have used RS-232 in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 5 years.
The most common languages among freelancers in Munich, Germany who have used RS-232 in their recent projects are German (100%), English (100%), and Spanish (33%).
The most common industries among freelancers in Munich, Germany who have used RS-232 in their recent projects are Information Technology (100%), Automotive (50%), and Healthcare (50%).
The most common business areas among freelancers in Munich, Germany who have used RS-232 in their recent projects are Information Technology (100%), Product Development (100%), and Project Management (100%).
Main locations of FRATCH Experts, who have recently used RS-232
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.
Countries:
Berlin Hamburg 
Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
