C Experts in Dortmund
from over 15,000 CVs with precise AI matchingHire experts who build reliable embedded software, operating-system components and high-performance services in C. Get specialists with experience in C11 and C17, POSIX systems, hardware interfaces and debugging, matched quickly from a vetted pool of available freelancers.
Meet FRATCH Experts in Dortmund, who have recently used C
Laurin H.
Last position:
Software Architect (Freelance) at Care4Sure
- Delivered MVP-focused full-stack architecture for a health-sector client: Vite/React frontend, backend services on Google Cloud Run, and Supabase for database plus IAM/authentication.
- Supported product requirements engineering and prioritized cost-aware workload placement, implementing browser-side/edge computation where feasible before moving logic to backend services.
Jens S.
Last position:
Network Technology at ISP, Internet Service Provider, BGP Peering
- Optimization of the transmission media of the data links in the Ruhr area
- Configuration/expansion of switches and routers for an autonomous system AS
- Improve the network protocols used Layer 2/3 (OSI model), RSTP, broadcast, etc.
- Laying cables, crimping, antennas, routers, switches
- Maintenance, expansion, selection and prioritization of troubleshooting measures for network monitoring (PRTG, The Dude)
- Organization and new connection of another BGP peering, data center, NGN fiber optic
- VPN IPSec site connections for 6 sites with PFSense, Fritzbox
- Configuration of WLAN devices (Mikrotik, UBNT
Label: TCP/IP, VLAN, BGP, OSPF, MPLS, VPLS, routing protocols, WLAN, EoIP, PPPoE, routing, SNMP, DHCP, DNS, NAT, native IP, VLAN, Ethernet, VoIP., switches and routers from: Nortel, Cisco, MikroTik, UBNT., network management systems: The Dude, PRTG, UISP
Patrik G.
Last position:
Technical Lead Conversational AI at CANCOM
- Technical lead of a team developing agentic chatbot solutions (React, TypeScript, Python, FastAPI)
- Architecture design for multi-LLM dialog systems - focus on maintainability, UX, and autonomous execution
- Stakeholder alignment, CI/CD processes, and AI integration at enterprise level
Usama I.
Last position:
Owner / Founder at Wizard Building Technologies
- Established and managed an exporting company specializing in hand tools and building materials.
- Successfully exported goods to Arab countries and worldwide.
- Oversaw all business operations including procurement, sales, and logistics.
- Built and maintained relationships with international clients and suppliers.
Ahmed S.
Last position:
Electrical Hardware Designer at Dematic GmbH
- Planning and designing hardware components for stacker cranes
- Creating engineering drawings and storing parts lists in SAP
- Maintaining and updating old and new circuit diagrams in EPLAN P8
- Managing master data up to creating macros for parts and assemblies
- Technical clarifications with suppliers, customers, and other departments
- Supporting the preparation of quotes and cost estimates
Jean Erge E.
Last position:
Engineer - Automation Technology at Ravensburg Milchwerke GmbH
- Plan and design complex production systems as part of a team
- Develop and modify electrical circuit diagrams
- Design electrical machine controls and drive technology
- Troubleshoot electronic assemblies
- Develop PLC and visualization software as well as process control software
- Identify and implement optimization measures
- Create operating instructions
- Ensure IT security of all operational technology
- Support building services
- Technologies: Eplan P8, PCS7, ProLeiT, PlantiT, TIA, S7
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.
Rosemarie F.
Last position:
Freelance Management Consultant in the Construction Industry at Freelance Management Consultant
- Implemented Agile methodologies to drive AI-enabled process optimization
- Integration of AI-driven solutions with SAP S/4 HANA
- Facilitated the adoption of advanced analytics tools to enhance decision-making
Talha Y.
Last position:
Remote part-time worker & pensioner
- Designing schematics, PCB layout, documentation
- Reviewing, debugging and fixing schematics and PCB layout
- Second source part searching and testing
Andreas N.
Last position:
Freelancer at Freelance Work
Ilja L.
Last position:
Software Engineer/Architect (Tech Lead) at Mercedes-Benz Tech Innovation GmbH
- Implementation of various interfaces for subsystems and connection to external devices (cameras, scanners, digital lockers)
- Development of various interfaces in the used cars area
- Realization of various prototypes
- Support in UI/UX and data analytics
- Development of frontend and backend solutions
- Kubernetes migration
- Building CI/CD pipelines
- Communication with the business unit and technical design of new solutions
- Cross-team alignment and coordination within the team
- Overview of the entire technology stack and related systems
- Documentation, preparation, and conducting of reviews
- Supporting the team and coordinating releases and key milestones
Rida Z.
Last position:
Smart Security Coordinator at Pak Arab Oil Refinery (PARCO)
- AI-based monitoring and digital process optimization
- Power BI and dashboard development and deployment.
Jan-Niklas F.
Last position:
Founder at Freundt Consulting GmbH
- Porsche AG (2018 – 12/2019): Design and development of native iOS apps in motorsport/Formula E (e.g. travel app and enterprise warehouse management with SAP integration) and e-mobility (Porsche Taycan; development of a native Microsoft Excel data export).
- StarFinanz / Sparkasse (05/2019 – 07/2021): Worked on the banking app (FinTS, HBCI, PSD2, Apple Pay); implemented Apple Pay; implemented a new TAN method; worked with the FinTS backend (PSD2); opened bank accounts via app (eID, VideoID, Authada); designed a new, modern banking experience.
- eBay Classifieds and Adevinta (07/2021 – 06/2023): Packaging & Pricing (premium features for business customers): e.g. markdown; company page; advertising options; multi-tenant design system based on SwiftUI and UIKit.
- Maschinensucher (07/2023 – 12/2023): Fullstack mobile (Android, iOS) and backend (PHP, Yii, Elastic Search) development; implemented search agent push notifications, InstantSearch, and modernized the design.
- Bankverlag (02/2024 - Present): Consulting and fullstack development of white-label apps (iOS / Android / Java Spring Boot) for private banks.
Henning P.
Last position:
Siemens
- Developed a reporting API with RESTful services and Spring Boot
- LDAP integration
- Migrated services to AWS
- Bootstrap
- Frontend development with Angular 14
- JBoss
- DynamoDB
- S3
- Athena
Discover over 15,000 top freelancers
Statistics of experts using C
Aggregated from the professional profiles of matched freelancers.
Experience
21 years
Position duration
2.6 years (Germany: 3.1 years)
Positions per freelancer
15 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Healthcare, Manufacturing
Certification focus areas
Information Technology, Product Development, Logistics
Bachelor's degree or higher
92% (Germany: 90%)
Master's degree or higher
38% (Germany: 65%)
Certifications per freelancer
3 (Germany: 2)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 98%)
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 Dortmund 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 Dortmund using C
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.
C 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 (64%)
- Healthcare (57%)
- Manufacturing (57%)
- Automotive (50%)
- Education (36%)
- Energy (36%)
- Retail (36%)
- Aerospace and Defense (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
C fundamentals
C is a compiled, procedural programming language designed for direct control of memory, data structures and system resources. It is used where predictable performance, small binaries and close interaction with hardware matter. C remains central to embedded products, operating systems, drivers and infrastructure software.
Systems and products
C specialists deliver firmware for microcontrollers, real-time control software, device drivers, networking components and command-line tools. They also maintain kernels, runtimes, databases and industrial systems where stable behavior matters more than rapid feature changes.
- Microcontroller firmware and board support
- Device drivers and hardware interfaces
- Real-time and safety-focused components
- Linux, POSIX and network services
Ecosystem and tooling
The C ecosystem includes GCC, Clang, CMake, Make, GDB and Valgrind, alongside cross-compilers and vendor-specific SDKs. Strong specialists work with POSIX APIs, sockets, threads, build pipelines and versioned language standards such as C99, C11 and C17. They use static analysis and sanitizers to find defects early.
When expertise matters
Companies bring in freelance C expertise when a product needs a new hardware layer, a legacy component needs careful modernization or a performance problem reaches the system boundary. Dortmund teams in industrial automation, mobility, electronics and logistics may also need specialists who can work closely with hardware and existing plant systems. Remote collaboration works well when interfaces, test hardware and documentation are organized clearly.
Quality signals
Strong professionals explain ownership, lifetime, layout, alignment and concurrency decisions instead of treating C as only a syntax task. They write focused tests, review compiler warnings, document assumptions and reproduce faults with small diagnostic cases. Experience with target hardware, toolchains and constrained environments is often more valuable than familiarity with a specific framework.
- Clear memory and error-handling strategy
- Reproducible builds and automated checks
- Practical debugging with GDB or hardware tools
- Safe interface design for C and adjacent systems
Working with specialists
Before starting, define the target processor, operating system, compiler, build system and release constraints. Share schematics, interface specifications, test access and existing defect reports where possible. A capable C specialist can then produce firmware, drivers, libraries or migration plans that fit the wider system rather than functioning as isolated code.
Frequently asked questions
Questions about C? Start with the answers below.
C is commonly used for embedded firmware, operating-system components, device drivers, networking software and high-performance libraries. It is a strong choice when direct hardware access, predictable resource use and portability are important.
C offers a smaller language model and direct control with little runtime overhead. C++ adds abstraction and object-oriented features, while Rust provides stronger compile-time memory safety; the right choice depends on existing code, toolchains, hardware constraints and the team’s maintenance needs.
C work often requires knowledge of embedded systems, electronics, Linux or another operating system, compiler behavior and build tools such as CMake. Useful adjacent skills include debugging with GDB, static analysis, POSIX APIs, networking, real-time concepts and automated testing.
C projects need a level of experience that matches their risk and system depth. Firmware, safety-sensitive components and concurrency-heavy services call for a specialist who can demonstrate disciplined memory management, fault analysis, testing and work with the relevant target environment.
C work can be handled remotely when source code, build instructions, test equipment and hardware access are available. For teams in Dortmund, occasional on-site sessions can help with lab debugging, board bring-up and coordination with production or hardware groups.
C is a practical option when a component must run with limited resources, integrate closely with hardware or remain portable across toolchains. It is less suitable when the project primarily benefits from extensive managed-runtime features or stronger built-in memory guarantees.
C quality is visible in clear ownership rules, controlled error paths, meaningful tests and clean compiler and static-analysis results. Ask the specialist to explain trade-offs around memory, concurrency, portability and failure recovery, then inspect how those decisions are documented.
C assignments vary from low-level firmware and drivers to portable libraries and legacy modernization. Specialists should clarify the language standard, compiler, target architecture, build process, debugging access and release obligations before estimating the work.
The average hourly rate of freelancers in Dortmund, Germany who have used C in their recent projects is 89 €, which corresponds to a daily rate of about 716 € based on an 8-hour working day.
Of the freelancers in Dortmund, Germany who have used C in their recent projects, 92% hold at least a Bachelor's degree and 38% hold at least a Master's degree.
On average, freelancers in Dortmund, Germany who have used C in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2.6 years.
The most common languages among freelancers in Dortmund, Germany who have used C in their recent projects are German (100%), English (93%), and French (29%).
The most common industries among freelancers in Dortmund, Germany who have used C in their recent projects are Information Technology (64%), Healthcare (57%), and Manufacturing (57%).
The most common business areas among freelancers in Dortmund, Germany who have used C in their recent projects are Information Technology (86%), Product Development (86%), and Quality Assurance (64%).
Main locations of FRATCH Experts, who have recently used C
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 
Essen 
Hanover 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
