
C Experts in Zurich
matched in minutes from over 15,000 CVs with the power of AIHire experts who build embedded software, operating-system components and high-performance services with C, while working confidently with POSIX, Linux, CMake and debugging tools. FRATCH matches you quickly with vetted, available freelancers who fit your technical needs.
Meet FRATCH Experts in Zurich, who have recently used C
Claus N.
Last position:
Oracle Database Engineer at BBV.ch
- Migration of databases from ODA to ExaData
- Migration of databases from ExaData to ExaCC/OCI
- Reduced UCC usage by 10%
- Developing automation scripts using Python
- Performance tuning
- Reduced development databases from 6 TB to 3 TB using Exadata columnar compression
- Improved application performance by 30% using the inmemory option
- Improved non-production Exadata performance by 20% to free up CPU resources before ExaCC migration
- Database patching of Oracle 19c
- Basic Ansible scripting for deployments and database cloning
- Developing an accounting model for a shared Oracle platform
- Migrating single-instance databases to Oracle RAC
- Analysis of RAC issues
- Advising development teams on how to migrate to RAC
Jakob F.
Last position:
Core Team Member at Jafa Consulting
- SME for operational processes, contract negotiation and product design for the implementation of a SaaS contact center solution & carrier services
- Definition of several operational processes, organizational setup, ITSM application integrations, creation of contract schedules and advising contract negotiation
- Scrum Master with agile tooling (processes & automation)
- Commercial manager to create business cases and closing the sales process
- Increasing impact, trusted relationship, and key team member within a short time
Peter S.
Last position:
Web Application Developer PHP / WordPress Plugin Development at Gemeinde Bauma
- Analysis, consulting, and development of a WordPress application for the digital processing and delivery of the Bauma chronicle archive
Ursula M.
Last position:
Business Mentor at RoleModel Rebels
- Mentor female students and professionals in advancing their careers, particularly as aspiring tech entrepreneurs.
Christoph J.
Last position:
Project management, Software engineering, Software architect, DevOps at Migros Genossenschafts Bund
- Greenfield project M-Zollmanager: Development of an internal platform to support users in booking requirement areas on line items in assessment notices.
- Greenfield project M-Deliveryplan: Development of an internal platform for planning and tracking deliveries in the international transport sector.
- Created functions to predict the estimated arrival time of container ships and goods from the port of loading to the port of destination, considering potential events.
- Developed the TrackAndTrace add-on for M-Deliveryplan to track and plan goods and containers.
- Built a generic AI chatbot for Migros app infrastructure, including ChatGPT integration and creating AI workflows with N8N.
- Developed AI assistants to automate repetitive tasks, such as creating release notes or processing Jira tasks based on N8N workflows.
- Further development and maintenance of the M-LFS, M-Vehicleaccess and M-Worklog apps.
- Used C#, Angular 18, DevOps practices, N8N, Kubernetes, Docker, Jira, Confluence and Azure.
- Ongoing project with continuous development of platforms and workflows.
Georgios S.
Last position:
Senior Software Engineer at UBS Bank
- Implementations of a code refactoring framework able to refactor thousands of repositories leveraging Generative AI
- Use Python (Django, Flask, FastAPI), Java and Typescript in Azure Cloud (Data Lake, VMs, AI) and GitLab infrastructure
- Mentoring and pair programming
- Obtained Azure AI-900 and AI-102 certifications
Dariusz K.
Last position:
Business System Analyst at Zurich Insurance
Participating in a strategic enterprise project to introduce a centralized customer data platform ("Single Source of Truth") to eliminate redundant data storage and accelerate digital services
Analyzing and documenting business and system requirements for migrating large, heterogeneous data sets (ETL) and for continuous data synchronization between core systems and the new platform
Close collaboration with business units, data engineers and architects to gather and validate requirements, and to ensure data quality, consistency and regulatory compliance
Defining the migration strategy, specifying ETL processes and synchronization mechanisms, and documenting technical interfaces
Developing and executing test cases for migration and synchronization processes, and performing defect analysis to ensure data integrity and system stability
Technologies: SQL, Microsoft SQL Server, Azure DevOps, Confluence, UML, RESTful Services, Swagger, Postman
Csaba K.
Last position:
ServiceNow Consultant at DXC
- Worked in mixed teams with several clients
- Performed requirement engineering, proposal and time estimation
- Developed ACLs, business rules, flows, workflows, catalog items, various scripts, UI actions, policies, scoped applications
- Customized mobile apps: Now Agent and Now Mobile
- Implemented integrations using the Integration Hub
- Coordinated continuously with clients during development
- Performed testing and helped clients with testing
- Deployed to production and applied main version upgrades and patches
- Managed CMDB, domain separation and asset management
- Integrated between instances at different clients
- Developed GlideScript: business rules, scripted REST endpoints, extension points, fix scripts, background scripts
Beat Z.
Last position:
SAP Test Manager at E.ON Grid Solutions GmbH
- Responsible for IT integration test and user acceptance test for SAP S/4 Hana and BDO BO Customer Financials Management
- Led the test team (business testers and IT testers)
- Resource planning and control within the test team
- Created test concepts and test plans
- Performed test risk analysis
- Coordinated test execution and defect tracking
- Ensured test progress
- Generated and visualized reports
- Summarized test reports and reported to management
- Prepared and conducted user acceptance tests
- Managed SIGMA and JIRA/Confluence at project level
Ioannis K.
Last position:
Algorithms Development Expert, Research & Development at Reishauer AG
- Mathematical specification and definition, analysis and software development of the skiving cutter tool motion planning within the skiving machine for simultaneous and sequential gear flank processing
- Twist-free topological manufacturing
- Workpiece flank line modifications
- Workpiece flank line and profile corrections
- Workpiece tooth thickness deviations
- Computer vision algorithms for automatic wear detection of the skiving cutter tool
- Software development for corrections of the machine kinematics for the profile grinding product series, including twist-free grinding
- Software development for corrections of the machine kinematics, quality measurement and evaluation for the slot grinding product series
- Performance analysis and continuous improvement of internal design tools (RTDesign)
- Tools used: C#, .NET, TeamCity, git, PostgreSQL, MySQL
Balázs S.
Last position:
Owner at Schweighoffer GmbH
- Business analysis and requirements engineering
- Consulting technical mathematics and control theory
- Selling outsourcing software development projects to companies
- Project lead, controlling and automated testing
- Software design and support
- Developed control algorithm for a sensorless permanent magnet electric motor
- Solved control engineering problems for customers
Nenad T.
Last position:
Contractor at Swisscom
- SAP Data Designer ETL, SQL Server, Docker for PharmaSuisse Data Warehouse Application (Application Manager and Developer)
- SAP Business Objects, ABAP on SAP HANA for the Police of the Canton of Bern (Application Manager and Developer)
- Avaloq Connectors to SAP BW for Banque Cantonale de Fribourg
Michael R.
Last position:
Doctor of Economics at University of St. Gall
- Awarded the degree of Doctor of Economics (Dr. oec.)
- Passed doctoral examination with the grade "good"
- Dissertation: Development of OR-based software systems – concepts for problem- and user-oriented design
Mateusz L.
Last position:
Project Lead Developer at PwC
- Took over the analyst and leading developer role in an innovative project helping detection of financial fraud in a major financial institution in Zurich with assistance of artificial intelligence
- Analyzed and implemented new modules, improved performance and user experience, elevated technical documentation and code quality to the standard required by the end client
- Technologies: Java 17, JavaFX, Spring Boot, concurrency, UX, Gradle, Impala
Udo W.
Last position:
Julius Bär
Application ownership and further development of test user management (TUM)
Areas of responsibility: Application ownership (Application Ownership / ITSO), application management, incident management, deployment / release management, requirements management, prioritization, further development, automation, and interface management
Technologies: SQL Server, Python, GitLab, UC4, Lieberman, Linux
Responsible for the operation and continuous development of a central application for managing more than 5.000 technical test users and their data.
Gathered and assessed business requirements, independently prioritized further development, and planned and coordinated implementation using agile methods and PI Planning, in close collaboration with the relevant business units and IT teams.
Expanded the central SQL Server database with additional information about test and real users, and integrated further applications through defined interfaces. The modular application used Python-based processing components, with execution and workflows controlled through UC4. This enabled data from different source systems to be automatically transferred, processed, and made available, as well as new test users to be created automatically.
Ensured reliable application operations and continuously optimized and automated existing processes.
Application ownership, modernization, and migration of incident management (TRANT)
Areas of responsibility: Application ownership (Application Ownership / ITSO), application management, incident management, deployment / release management, requirements management, software modernization, migration, interface integration, and quality assurance
Technologies: UC4, Jira, SQL Server, Oracle, Java, Python, Lieberman, Linux, Jai
Responsible for the operation and development of an application that automatically records, processes, and forwards technical incidents in various test environments.
Automated the creation of Jira incident tickets when UC4 workflows were blocked, including routing them to the relevant application managers.
Modernized the application by migrating from Java to Python, moving the database from Microsoft SQL Server to Oracle, and replacing the Jenkins scheduler with UC4.
Integrated the Jira API and used the bank's internal AI solution Jai to support code migration and subsequent validation. Independently and critically reviewed AI-generated results for business and technical accuracy.
Shift lead for operations control in test environments
Areas of responsibility: Monitoring various test systems
Technologies: UC4, TSO, HOST, Azure-Cloud
Responsible for monitoring and controlling automated processing workflows in various test environments, including systems running in the Azure-Cloud.
Monitored UC4 and HOST workflows and analyzed and handled incidents. When processing workflows were blocked, Jira tickets were automatically created through TRANT and assigned to the relevant application owners. In coordination with them, affected jobs were restarted or stopped as needed. HOST processes were also monitored and controlled through OPC.
A multi-shift operation was introduced to ensure stable and as continuous as possible testing.
Test data anonymization manager
Areas of responsibility: Planning/anonymizing/publishing production data for test systems
Technologies: UC4, Informatica (PowerCenter and IDMC)
To ensure test environments could run with real data, production databases were cloned regularly. Production data had to be untraceable in test environments. For this reason, the cloned databases were first anonymized with Informatica PowerCenter and later with Informatica IDMC. Critical tables and columns in the various databases (Oracle, SQL-Server, MongoDB) had to be identified and analyzed at the data level. Rules for handling critical data were agreed with the application owners.
Discover over 15,000 top freelancers
Statistics of experts using C
Aggregated from the professional profiles of matched freelancers.
Experience
27 years

Position duration
2.1 years

Positions per freelancer
17

Top business areas
Information Technology, Product Development, Project Management

Top industries
Information Technology, Banking and Finance, Insurance

Certification focus areas
Information Technology, Product Development, Research and Development
Bachelor's degree or higher
87%
Master's degree or higher
67%
Doctorate
20%

Certifications per freelancer
3

Most common languages
German, English, French

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 Zurich 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 Zurich 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 29 Oct 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 (82%)
- Banking and Finance (71%)
- Insurance (59%)
- Government and Administration (59%)
- Education (53%)
- Manufacturing (53%)
- Professional Services (47%)
- Telecommunication (47%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core language
C is a compiled systems programming language used when predictable performance, direct memory access and tight resource control matter. Companies use it for firmware, operating-system components, device drivers, networking software, databases and real-time applications. Its small runtime footprint makes it suitable for both constrained devices and demanding infrastructure.
Systems and products
C specialists contribute to software that sits close to hardware or must remain reliable under sustained load. Typical deliverables include:
- Microcontroller firmware for sensors, controllers and industrial devices
- Linux and POSIX services, drivers and system utilities
- Network stacks, protocol implementations and storage components
- Real-time software with strict timing and memory constraints
Tooling and ecosystem
The C ecosystem includes GCC, Clang, LLVM, Make, CMake, GDB and Valgrind, along with static analysis and automated testing tools. Strong professionals understand compiler behavior, linkers, build systems, cross-compilation and target hardware. They may also work with Linux, POSIX APIs, shell scripting, Git, CI pipelines and hardware debugging equipment.
When to bring expertise
Companies often seek freelance C expertise when an embedded product needs new firmware, an old codebase requires safe modernization or a performance issue cannot be isolated by general application specialists. In Zurich, this can support industrial technology, robotics, scientific equipment and connected products, with remote work complemented by on-site access when hardware testing is essential.
Reliable delivery
A capable C professional starts by defining the target environment, compiler settings, memory model and timing requirements. They use clear interfaces, defensive error handling and reproducible builds rather than relying on undocumented behavior. Good work includes tests for boundary conditions, practical diagnostics and documentation that lets the internal team maintain the code.
Choosing a specialist
Look for evidence of shipped C systems that resemble the constraints of your project. Ask how the specialist handles memory ownership, concurrency, portability, toolchain changes and failures in the field. For Zurich-based teams, confirm availability for hardware sessions, communication in the required working language and the ability to collaborate with product, hardware and quality teams.
Frequently asked questions
What clients ask us most about C — answered in short.
C is used for embedded firmware, operating-system components, device drivers, networking software, databases and real-time systems. It is a strong choice when memory use, execution timing and hardware access must remain tightly controlled.
C offers a smaller language surface 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 the existing codebase, toolchain, target hardware and delivery constraints.
C work often requires Linux or an RTOS, POSIX APIs, Git, CMake, cross-compilers and debugging with GDB. Depending on the project, useful adjacent skills include electronics, microcontroller architectures, communication protocols, shell scripting and continuous integration.
C project needs vary with the risk and constraints involved. A specialist extending a tested application may need a different background from someone responsible for boot firmware, interrupt handling, safety-critical behavior or a difficult memory and concurrency problem.
C projects can often be handled remotely through source control, emulators, automated tests and shared build environments. Hardware bring-up, lab measurements and device debugging may require scheduled on-site work in Zurich, so clarify equipment access and collaboration hours early.
C specialists need to know the processor or operating system, compiler and build system, interfaces, performance targets and release constraints. Include the current codebase condition, available test hardware, required documentation and whether the work covers maintenance, new features or a migration.
C quality is shown through understandable ownership rules, controlled dependencies, meaningful tests and clean compiler and static-analysis results. Review how the specialist explains failure handling, undefined behavior, portability and the trade-offs behind performance decisions.
C remains important where hardware access, compact binaries and established toolchains are central requirements. It continues to appear in firmware, kernels, networking, storage and interoperability layers, often alongside C++, Rust, Python or vendor-specific development tools.
The average hourly rate of freelancers in Zurich, Switzerland who have used C in their recent projects is 120 €, which corresponds to a daily rate of about 962 € based on an 8-hour working day.
Of the freelancers in Zurich, Switzerland who have used C in their recent projects, 87% hold at least a Bachelor's degree, 67% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Zurich, Switzerland who have used C in their recent projects have 27 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Zurich, Switzerland who have used C in their recent projects are German (100%), English (100%), and French (35%).
The most common industries among freelancers in Zurich, Switzerland who have used C in their recent projects are Information Technology (82%), Banking and Finance (71%), and Insurance (59%).
The most common business areas among freelancers in Zurich, Switzerland who have used C in their recent projects are Information Technology (100%), Product Development (88%), and Project Management (82%).
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.
Countries:
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