C Experts in Essen
matched in minutes from over 15,000 CVs with the power of AI.Hire experts who write safe, fast C for embedded systems, firmware, Linux services, drivers, and performance-critical code. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Essen, who have recently used C
Alwin G.
Last position:
IT Interim Manager & AI Strategist
- AI product development: Design of an AI-supported GRC platform to automate compliance processes.
- AI expertise: Strategic deepening in Agentic AI and GenAI as a core asset for modern IT governance
- IT interim management and strategic consulting
Rudolf Eggelbusch
Last position:
Datacenter Engineer, Network & Security Administrator at International insurance group
Operation and further development of the network and security infrastructure.
Monitoring, analysis and resolution of network and security incidents.
Cross-department collaboration with other specialist teams for operations, further development and reporting.
Firewall vulnerability analysis.
Firewall rule approvals.
Troubleshooting IP communication issues in the network and firewall infrastructure.
Security-critical IT infrastructure, processing of personal data, compliance with legal regulations.
Products: Palo Alto Networks Firewalls, Cisco ACI, Checkpoint Firewalls, F5
Technologies: SDN, SDWAN, Cisco EPIC, Cisco ACI
Laurin Hagemann
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 Schneeweiß
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
Mike Heinke
Last position:
IT-Consultant & Founder at QFITS GmbH
In my role as Managing Director of QFITS GmbH, I support companies throughout the entire project cycle - from requirements gathering and process analysis to the design of suitable system solutions and all the way to implementation and quality assurance. My focus is on the introduction and integration of POS and ERP systems as well as their seamless connection to existing backend systems and interfaces.
Direct food sales (09/2025 – 05/2026) Support of a project from requirements analysis to the introduction and integration of a new POS system for a direct food sales company. A special focus was on archiving POS logs as well as preparing and providing them as transactions for connected surrounding systems. In addition, design and setup of functional tests and performance tests for the existing backend system, which had to be seamlessly integrated with the POS system.
Christoph Quick-Timmerhaus
Last position:
Self-employed contractor + consultant
- Strategic procurement of professional services and other indirect categories including negotiation, development of category strategies, and stakeholder management
- Bandwidth: Team lead – CPO
- Design and execution of large spend programmes
- Negotiation (preparation and execution)
- Determination of the organisational maturity grade and organisational development
- Process optimisation and KPI development
- Change management
- Collaboration with other procurement consultants such as GMVK Procurement, Efficio, McKinsey, BCG
- Liquidations: dissolving contracts, monetising assets, social compensation plan
- Industries: Automotive, Energy/Utilities, Health Care
- Company size: Corporates (DAX, MDAX), SMEs (50 – 1 000+ FTE), Start-ups
- Selected projects:
- Liquidated companies that once provided simulator services to German Nuclear Power Plants
- Optimised the procurement of professional services at a global logistics company
- Optimised the professional services procurement in the EMEA region at a global automotive group (MDAX)
- Consulted on a sales concept for selling medical devices to hospitals/GPOs
- Head of Procurement for medical consumables at a Group Procurement Organisation (procurement for hospitals)
- Managing Director of a truck service provider
Farnaz Rezay Morsagh
Last position:
Specialist for Monitoring, Testing and Delivery of Domestic and International IP Networks / Network Technician at Iran Telecommunications Infrastructure Company
- Installing and commissioning electrical equipment and systems
- Maintenance, repair and servicing of electrical devices
- Troubleshooting and resolving faults in electrical systems
- Reading and interpreting circuit diagrams and technical drawings
- Working with measuring and testing equipment according to DIN VDE standards
- Building control cabinets and professional wiring
- Experience with low- and medium-voltage systems
- Adhering to health and safety regulations
Kamran Aziz
Last position:
Product Owner Application & Platform at Hoffmann Group
- Manage Sprint & Products Backlog
- Participate in Scrum ceremonies
- Define Definition of Ready and Done
- Define & drive Products vision, strategy & roadmap
- Collaborate & coordinate with cross functional teams
- Administration & Configuration of Atlassian Tools (Jira, Confluence, Jira Service Management, Trello, Bitbucket & Atlas)
- Administration of ServiceNow
- Training users with best practices
Jan-Niklas Freundt
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.
Petr Zvolský
Last position:
Founder at TRUSTUM UG
- Interim management in pricing (wholesale and B2C retail)
- Operational excellence of a delivery project within the German gas industry
- Commercial analysis of an M&A target in the music industry
Discover over 15,000 top freelancers
Statistics of experts using C
Aggregated from the professional profiles of matched freelancers.
Experience
21 years (Germany: 23 years)
Position duration
2.4 years (Germany: 3.1 years)
Positions per freelancer
16 (Germany: 14)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Automotive, Information Technology, Manufacturing
Certification focus areas
Information Technology, Project Management, Human Resources
Bachelor's degree or higher
89% (Germany: 88%)
Master's degree or higher
33% (Germany: 61%)
Doctorate
11%
Certifications per freelancer
6 (Germany: 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 Essen 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 Essen 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
Core C work
C is the language for close-to-the-metal software. It is used for operating system code, embedded firmware, device drivers, network tools, and performance-heavy services where control matters more than abstraction. Strong C work is clear, compact, and careful with memory and pointers.
Typical deliverables
- Embedded control code for microcontrollers and industrial devices
- System libraries and command-line tools for Linux and Unix environments
- Protocol handlers, parsers, and low-latency service modules
- Maintenance fixes for legacy C codebases that still run critical business systems
Ecosystem and tooling
C experts work with GCC, Clang, Make, CMake, GDB, Valgrind, and sanitizers. They understand headers, build flags, static analysis, and cross-compilation. They also know when to keep the code plain C and when to wrap it with safer interfaces.
When companies bring in help
Teams usually need freelance C specialists when a product must run on constrained hardware, when performance bugs are hard to isolate, or when older code needs careful change without breaking behavior. In Essen, this often comes up around industrial systems, connected devices, and internal software that cannot be rewritten from scratch.
What strong experts do well
Good C professionals read legacy code quickly and find the real risk points. They manage memory, lifetimes, concurrency, and compiler warnings with discipline. They write code that is easy to test, easy to port, and stable under load.
Working style and fit
- Clear reviews for pointer, buffer, and ownership issues
- Practical unit tests and reproducible builds
- Careful debugging on target hardware or in a local environment
- Documentation that helps the next specialist continue the work
For companies in Essen, remote collaboration is often enough for analysis, refactoring, and tooling work. On-site support helps when the code touches devices, lab hardware, or production systems that need direct access.
Frequently asked questions
Need clarity? These are the questions we hear most often about C.
C is used for operating systems, embedded firmware, device drivers, protocol stacks, and tools that need speed and tight resource control. It also appears in long-lived internal systems where reliability matters more than rapid feature change. Many companies keep using it because the code must stay portable and predictable.
C is usually the better fit when the codebase must stay small, portable, and very close to the hardware. C++ adds more language features, while Rust focuses on memory safety with a different model and a different hiring profile. If a team already has a C codebase, a C specialist can often improve it without a larger redesign.
A strong C specialist usually understands debugging, build systems, static analysis, and the target operating system. For embedded or systems work, knowledge of Linux, cross-compilation, memory management, and basic hardware behavior is important. Good communication matters too, because many C tasks involve legacy code and hidden assumptions.
A C freelancer can start with a clear problem statement, the target platform, and access to the current build and test setup. The more critical the system, the more useful it is to share logs, repro steps, and constraints around memory, latency, or hardware. Good specialists can work with incomplete code, but they need a way to verify changes.
Yes, many C tasks can be done remotely, especially code review, bug fixing, refactoring, and build troubleshooting. On-site work helps when the software runs on lab equipment, factory systems, or hardware that cannot be mirrored easily. In Essen, teams often use a mix of both depending on access needs.
Look for clear explanations of past C work, not just broad claims. Strong candidates can discuss memory ownership, compiler warnings, testing strategy, and how they handled a difficult bug. A short code sample or a walkthrough of one real problem often shows more than a long list of tools.
Ask whether the work is new development, a fix to legacy C code, or support for an existing product. Also clarify the target platform, expected load, and any safety or timing constraints. These details help the specialist choose the right approach from the start.
The main challenge in C is that the language gives a lot of control and very little protection. That makes pointer errors, buffer issues, and memory leaks easy to introduce if the code is rushed. Good specialists reduce that risk with careful design, testing, and disciplined reviews.
The average hourly rate of freelancers in Essen, Germany who have used C in their recent projects is 110 €, which corresponds to a daily rate of about 881 € based on an 8-hour working day.
Of the freelancers in Essen, Germany who have used C in their recent projects, 89% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Essen, Germany who have used C in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Essen, Germany who have used C in their recent projects are German (100%), English (100%), and Spanish (30%).
The most common industries among freelancers in Essen, Germany who have used C in their recent projects are Automotive (60%), Information Technology (60%), and Manufacturing (60%).
The most common business areas among freelancers in Essen, Germany who have used C in their recent projects are Information Technology (80%), Product Development (80%), and Project Management (80%).
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 
Dortmund 
Hanover 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
