C Experts in Hamburg
matched in minutes from over 15,000 CVs with the power of AIHire experts who write efficient C code for embedded systems, operating-system components, networking software, and performance-critical libraries. Get vetted, available specialists matched fast for clean builds, careful debugging, and long-term maintainability.
Meet FRATCH Experts in Hamburg, who have recently used C
Niko Schmuck
Last position:
Developing Architect, Technical Lead "gridlytics" at HH Energienetze
- Building a data integration platform for high, medium, and low voltage assets for contextual analysis of time series with master data from the SCADA control system (IEC 60870 104), INIS, and SAP.
- Responsibility for the architecture and implementation of the solution, as well as sparring partner for the Product Owner.
- Use of Kotlin, Spring Boot, Maven, TimescaleDB, PostgreSQL, liquibase, Elements IoT, Docker, Kubernetes, Grafana, Python, jupyter, and various API gateways.
Aiman Ragab
Last position:
Test Manager and Test Automation Engineer at Warehouse Management Company
- Introduced test management with SolMan
- Implemented test automation with TOSCA
- Analyzed, created, and automated test cases
- Built regression test portfolio
- Stakeholder meetings and alignments
- Financial management
Rainer Diekmann
Last position:
Enterprise Architecture Management / Backend Software Developer at Polizei Hamburg
- Several projects in a police context
- Model and document police procedures/projects with Archimate (as-is/to-be) in the context of P20 (BKA)
- Create software architectures with microservices
- POC development with Springboot/Docker/Kubernetes
- Project size: 10 people
- Enterprise architecture management with Togaf and Archimate
- Backend software development Springboot
- DevOps with Kubernetes
- Implemented using: Java 17/21, Springboot 3, P20 architecture, Togaf, Archimate
Alex Odesser
Last position:
Contractor at Telefonica Germany GmbH & Co. OHG
- Data-analysis, Preparation, gathering and coordination of business requirements for retrieval of monthly- and long term (CLV – relevant) cost- and revenue-components per contract for a customer–base–grouping project (HUB–Project) for B2C-Postpaid-Controlling
- Concept and Implementation of cost- and revenue-KPIs calculation and corresponding CLV–reports (Oracle, Perl, SVN, MS SQL Server, MS Power BI, Serviceware Performance Analytics)
- Operational support of the HUB-Project – various ad-hoc reports, deployments, job-scheduling etc. (Oracle, SVN, BICSuite–Scheduler, DWSODA etc.)
- Analysis, implementation, retrieval and reporting of various physical and financial KPIs for B2P-Prepaid Business on an existing data-mart (Oracle, Perl)
Stephan Le Anh
Last position:
IT Generalist at SThree
- Software packaging and distribution with SCCM/MECM
- Application responsibility and support (50–100 applications)
- Documentation via ticket system
- User management via AD console
- Software updates and distribution
- Maintenance and updating of software packages
- Customizing scripts with PowerShell
- Rolling out and implementing new software
- Supporting IT security and compliance
Tools and software: Confluence, M365, Active Directory, Intune, Endpoint Management, SCCM/MECM, PowerShell, VMware Hardware: Lenovo, Cherry, Plantronics, Jabra + peripherals
Sascha Moses
Last position:
Freelance Mandate at PAYONE
- Strategic support for the CRM team in Kiel for Jaguar Land Rover.
- Development and implementation of industry-specific CRM strategies for marketing automation for Jim Beam.
- Development and implementation of target group-specific anti-churn and retention strategies for Landesbank Berlin.
- Selection and onboarding of service providers and agencies for Melitta.
- Consulting on the development of strategic processes and on the selection and implementation of a marketing automation software for Miles & More.
- Development and establishment of segmentation approaches based on use cases and customer value for NIVEA.
Hartmut Ullrich
Last position:
Freelancer at Freelancer
Projects at Raiffeisen Software Group (RSG), Linz from 2022-01-01 to 2025-03-31: application development on mainframe with PL/1, DB2, JCL, Tabex; development environment with idz, Jira, Dimensions, Confluence; execution of projects in banking reporting (own funds, capital requirements, large exposures, leverage ratio)
Project at Airbus, Hamburg from 2020-01-01 to 2022-12-31: mainframe system enhancements (TAKSY) in agile environment (Scrum, SAFe); business analysis; technical design; implementation (PL/1, DB2, IMS, JCL); test management; deployment
Patrick Von Der Gönna
Last position:
Senior Director, Retail Media at EUROBAUSTOFF Handelsgesellschaft mbH & Co. KG
- Strategic consulting on marketing funds (WKZ) and retail media, focusing on monetization opportunities and data-driven business models
- Conducting a portfolio analysis of existing WKZ measures to assess the revenue and ROI impact of WKZ investments on supplier performance
- Potential analysis of digital WKZ products and initiatives to identify growth and efficiency levers
- Preparing and presenting the results to management and deriving a strategic move-forward plan
- Designing and facilitating several executive workshops to develop a holistic retail media vision and transformation roadmap
- Defining and prioritizing retail media business cases for data-driven evaluation of investment options
- Developing a technical target architecture considering heterogeneous ERP infrastructures and designing an integrated loyalty program
- Designing change management, including impact analysis on organizational structures and processes
- Creating and presenting C-level decision templates
- Establishing a clear retail media governance structure and technical foundation for data-driven marketing
- Developing a roadmap for implementation in 2026
Sebastian Kracht
Last position:
Freelancer - Project Manager & Agile Coach at Kracht Projektmanagement
- Interim single project, program and portfolio management in technical hardware development and production
- Consulting and support in selecting and implementing appropriate project management methods and frameworks for projects and programs
- Agile coaching to support and develop agile teams and organizations
Alexander Bröcker
Last position:
Owner at PEMA-TEC Alexander Bröcker
- Project to develop the complete software for a film roll warehouse at American Packaging Corporation, Story City, Iowa (warehouse vehicles SINATIC S7, warehouse management C#, Microsoft SQL Server, AGV interface C++, ERP system interface REST API)
- Development of a warehouse simulator for real machine processes aimed at optimized storage of film rolls (C#)
- Project to develop the complete software for a printing cylinder warehouse at Huhtamaki, Ronsberg (warehouse vehicles TIA Portal, warehouse management C#, Oracle, ERP system interface DB table)
- Further development of the warehouse simulator for improved programming of the movement planner
- Project to read and analyze QR codes on letters in the letter sorter at XPROMA GmbH, Salzhausen (program as a service for fast reading of QR codes via two Keyence barcode readers in C#, Microsoft SQL Server, TCP/IP; program for monitoring and parameterizing the barcode readers and triggering the data export in C#, Microsoft SQL Server, SFTP transfer)
- Project for the development and programming of a low-cost management system for automated guided vehicles with Egemin Automation Inc. and American Packaging Corporation (C++, C#, Microsoft SQL Server, TCP/IP)
- Project for the test stand development and automation of SYS.5 tests for the climate actuator at ETO GRUPPE TECHNOLOGIES GmbH, Stockach (test stand software LabVIEW, C#; test evaluation DIAdem, C#; databases Microsoft SQL Server)
Neele Bartels
Last position:
Data Privacy Consultant at Data Protection Consulting
- Development and implementation of a data protection management system
- Ensuring compliance with data protection regulations
- Preparation of a privacy policy and other relevant documents
- Sustainable integration of data protection into the company, including implementing a training concept for employees
Peter Neumann
Last position:
Pilot testing AI tools & sabbatical for house renovation
- Pilot testing local AI environments to explore local AI use cases and cloud-based AI solutions
- Evaluation of AI tools and techniques
- Use of local AI tools with own data sovereignty
- Prompt engineering
- Creation of example environments for speech-to-text, text-to-speech, text-to-image, text-to-video, and image-to-video
Tools: Grok, Perplexity, ChatGPT, Elevenlabs, Github, Ollama, HuggingFace, Open WebUI, Faster Whisper, LibreTranslate, WSL, Docker Desktop, Shotcut, Audacity, Sound eXchange, Ffmpeg, Coqui TTS, Pinokio, Stable Diffusion Web UI, ComfyUI, OWL, Void Editor
Michael Kraft
Last position:
Bytec Medizintechnik
- Developed solution to filter heavily noisy analog sensor data by combining high-speed sampling with digital firmware filtering
- Increased battery life of a battery-powered medical device from about 10 days to about 18 months
- Supported the overall project up to initial clinical tests and TĂśV approval
Finn Hinrichsen
Last position:
Data Architecture at NTT Global Ltd.
Design and implementation of a big data energy reporting infrastructure for operational data from data centers in EMEA for aggregated client reporting and the energy efficiency register (EnEfG)
Integration of data from over 50 systems, including GridVis, Robotron, Niagara, ShowIT, and Salesforce
Andreas Johannsen
Last position:
Project Manager Electrical Engineering at Delta Energy Systems
- Development of onboard charging units for electric vehicles
- Timeline and resource planning (MS Project)
- Requirements management (IBM DOORS)
- Task tracking (JIRA)
- Quality and process optimization according to ASPICE
Discover over 15,000 top freelancers
Statistics of experts using C
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
2.4 years (Germany: 3.1 years)
Positions per freelancer
16 (Germany: 14)
Top business areas
Information Technology, Project Management, Product Development
Top industries
Information Technology, Automotive, Education
Certification focus areas
Project Management, Product Development, Information Technology
Bachelor's degree or higher
86% (Germany: 88%)
Master's degree or higher
43% (Germany: 61%)
Doctorate
10% (Germany: 11%)
Certifications per freelancer
3
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 98%)
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Hamburg 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 Hamburg 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
What C is for
C is a systems programming language for software that must be fast, small, and close to the hardware. Teams use it for firmware, device drivers, network tools, databases, and core libraries. It is also the base language behind much of Unix, Linux, and many real-time systems.
Where it fits
- Embedded software and microcontrollers
- Operating-system and kernel work
- Performance-sensitive libraries
- Network services and protocol code
- Legacy maintenance and porting
C is often chosen when direct memory control, predictable behavior, and low overhead matter more than convenience features.
Skills around it
Strong C specialists know pointers, memory layout, the preprocessor, build systems, and compiler behavior. They also work with tools such as gcc, clang, make, CMake, gdb, valgrind, and sanitizers. Good work in C means reading unfamiliar code carefully and keeping interfaces stable.
When companies bring help
Companies usually bring in freelance C experts for rescue work, modernisation, and hard-to-staff specialist tasks. That includes crash fixes, unsafe-memory cleanup, hardware bring-up, cross-platform builds, and porting old C code to newer toolchains.
In Hamburg, this often fits teams in industrial software, logistics systems, maritime technology, and other environments where reliability matters and on-site collaboration may be useful for hardware or legacy access.
What strong professionals deliver
A strong C professional ships code that is small, readable, and testable. They pay attention to undefined behavior, allocation rules, header design, and ABI stability. They also document assumptions clearly so later maintenance is not guesswork.
C work done well
- Clean APIs with clear ownership rules
- Safe handling of buffers and strings
- Buildable code across compilers and targets
- Practical tests for edge cases and regressions
- Careful integration with existing C and C++ code
The best specialists balance speed with restraint. They keep changes tight, review dependencies, and avoid adding complexity that the language will not protect against.
Frequently asked questions
Not sure where to start with C? These answers cover the essentials.
C is used for software that needs direct control over memory, hardware, and execution speed. Companies choose it for embedded firmware, drivers, protocol stacks, databases, and low-level runtime code. It is also common in older products that still need safe maintenance and selective modernization.
C is smaller and more direct, with fewer abstractions and less built-in support for object-oriented design. That makes it a strong fit for tightly constrained systems and code that must stay easy to map to hardware. C++ is often chosen when teams want higher-level language features on top of similar low-level access.
A C specialist is the right choice when bugs may involve memory corruption, compiler issues, binary interfaces, or hardware interaction. Generalists can help with higher-level code, but C work often needs deep familiarity with pointers, build flags, and debugging tools. That is especially true for legacy systems or performance-critical components.
A strong C professional usually knows Linux, shell tooling, debugging, and build systems such as Make or CMake. Knowledge of compilers, sanitizers, version control, and test automation is also valuable. In embedded work, experience with toolchains, cross-compiling, and device access matters a lot.
C is the language name people usually use today, while ANSI C refers to the standardized form that helped define the language. In practice, searchers may mean standard C, ISO C, or older code written to that style. A good specialist understands both modern and legacy code bases without mixing up the dialects.
Most C work can be done remotely if the environment is set up with the right build access, test devices, and logging. On-site time can help when hardware boards, lab equipment, or legacy systems are involved. In Hamburg, many teams mix both to fit local operations and distributed collaboration.
Look for clean ownership of memory, clear error handling, and code that builds reliably across targets. A strong C specialist explains trade-offs, writes useful tests, and avoids hidden undefined behavior. Review past work for debugging depth, not just line count.
A good C brief explains the target platform, compiler, build system, existing code base, and the exact problem to solve. It should also mention constraints such as memory limits, timing requirements, hardware dependencies, and whether the work touches legacy code. The clearer the brief, the faster a specialist can start usefully.
The average hourly rate of freelancers in Hamburg, Germany who have used C in their recent projects is 103 €, which corresponds to a daily rate of about 824 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used C in their recent projects, 86% hold at least a Bachelor's degree, 43% hold at least a Master's degree, and 10% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used C in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Hamburg, Germany who have used C in their recent projects are German (100%), English (100%), and Spanish (17%).
The most common industries among freelancers in Hamburg, Germany who have used C in their recent projects are Information Technology (75%), Automotive (50%), and Education (46%).
The most common business areas among freelancers in Hamburg, Germany who have used C in their recent projects are Information Technology (88%), Project Management (83%), and Product Development (75%).
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 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Leipzig 
Dortmund 
Essen 
Hanover 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
