Skip to main content
🇩🇪GDPR-compliant
Find experienced

C Experts in Zurich

matched in minutes from over 15,000 CVs with the power of AI.

Hire experts who build low-level software, embedded firmware, performance-critical services, and safe legacy codebases in C and ISO C. From toolchains to memory handling and debugging, get fast, precise matching with vetted, available freelancers.

Meet FRATCH Experts in Zurich, who have recently used C

Verified expert

Claus Nielsen

View profile

Oracle Database Engineer

Thalwil
Claus Nielsen

Last position:

Oracle Database Engineer at BBV.ch

  • Migration of databases from ODA to ExaData
  • Migration of databases from ExaData to ExaCC/OCI
  • Decreased UCC usage by 10%
  • Developing automation scripts using Python
  • Performance tuning
  • Shrunk development databases from 6 TB to 3 TB using Exadata columnar compression
  • Tuned application performance by 30% using inmemory option
  • Tuned non-production Exadata by 20% to release CPU resources before ExaCC migration
  • Database patching of Oracle 19c
  • Basic Ansible scripting for deployments and database cloning
  • Developing acconting model for shared Oracle platform
  • Migrating single-instance databases to Oracle RAC
  • Analysis of RAC issues
  • Advising development teams of how to migrate to RAC
Verified expert

Dariusz Kaczmarkiewicz

View profile

Business System Analyst

Zürich
Dariusz Kaczmarkiewicz

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

Verified expert

Csaba Kéri

View profile

ServiceNow Consultant

Zumikon
Csaba Kéri

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
Verified expert

Beat Zangger

View profile

SAP Test Manager

Zürich
Beat Zangger

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
Verified expert

Georgios Sfakianakis

View profile

Senior Software Engineer

Zürich
Georgios Sfakianakis

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
Verified expert

Ioannis Kaliakatsos

View profile

Algorithms Development Expert, Research & Development

Wallisellen
Ioannis Kaliakatsos

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
Verified expert

Sten Sandring

View profile

Development of control and monitoring firmware for traffic light systems

Neerach
Sten Sandring

Last position:

Development of control and monitoring firmware for traffic light systems

  • Co-developed hardware design, board bring-up, and startup code; developed low-level peripheral drivers; implemented CAN communication protocols for sensors and actuators on an STM32 dual-core.
  • Implemented security requirements.
  • Technologies: GCC, Make, GDB, ST-Link, STM32, Dual-Core Cortex-M4/M7, CMIS, CAN.
  • Languages: C/C++ (C++-23).
  • Industry: traffic control systems.
Verified expert

Balázs Schweighoffer

View profile

Owner

Uster
Balázs Schweighoffer

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

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

16

Top business areas

Information Technology, Product Development, Project Management

Top industries

Banking and Finance, Information Technology, Government and Administration

Certification focus areas

Information Technology, Product Development, Business Intelligence

Bachelor's degree or higher

75%

Master's degree or higher

50%

Doctorate

25%

Certifications per freelancer

4

Most common languages

German, English, Greek

Speak two or more languages

100%

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 1 2 3 4
<€640 €640-​800 €800-​960 €960-​1120 €1120-​1280 €1280+

The chart shows how the daily rates of freelancers in this technology in Zurich 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 Zurich using C

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Rate comparison chart
Daily rate avg. 909 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
500
250
Rate comparison chart
Median rate 920 €

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 language

C is a systems programming language used for software that must stay close to the hardware. It is common in operating systems, embedded firmware, device drivers, compilers, and network software. Teams also use it when they need predictable performance and direct control over memory.

Where it fits

  • Embedded control and firmware
  • Operating systems and kernels
  • Network services and protocol stacks
  • CLI tools and build utilities
  • Safety-sensitive and legacy code

C is often chosen where portable, small, and efficient code matters more than convenience. Many products still rely on ANSI C or ISO C for stable interfaces and long-lived components.

Tooling and standards

Strong C specialists work fluently with GCC, Clang, Make, CMake, GDB, Valgrind, static analysis, and sanitizers. They understand headers, compilation units, build flags, and how to keep code portable across Linux, Unix, and Windows toolchains. They also know when to use C99, C11, or newer standard features without breaking older systems.

What companies need

Companies bring in freelance C experts when a codebase needs rescue, optimization, or a safe extension layer. Typical work includes fixing memory bugs, untangling build systems, porting code to a new platform, reviewing low-level designs, and hardening interfaces for production. In Zurich, this is common for industrial, finance, and hardware-driven teams that need focused support without a long onboarding cycle.

Strong expert profile

A solid C professional writes clear, testable code and can explain trade-offs in pointer use, ownership, and data layout. They debug with confidence, read existing code fast, and protect ABI compatibility when needed. Good specialists also document assumptions, because small mistakes in C can become expensive in production.

Working model

C work can often be done remotely if the scope is clear and the environment is accessible. On-site help is useful for hardware bring-up, lab testing, or tight coordination with local teams in Zurich. The best results come from experts who can switch between implementation, review, and careful diagnosis without losing precision.

Published on:
FRATCH GPT

FRATCH GPT delivers freelancer proposals with clear reasoning and transparent pricing in minutes, helping your hiring department quickly and compliantly find the best talent.

Give it a try:

Try FRATCH GPT

Frequently asked questions

What clients ask us most about C — answered in short.

C is used for software that needs direct control over memory, hardware access, or predictable runtime behavior. That includes embedded firmware, operating systems, protocol code, compilers, and performance-critical libraries. It is also common in long-lived products that depend on stable interfaces.

Bring in a C specialist when the work touches pointers, memory safety, build flags, or platform-specific behavior. This is especially important if you need to fix crashes, modernize legacy code, or port software to new hardware. A broad generalist may know the area, but C demands deep low-level discipline.

C is smaller and more direct, with fewer abstractions and less runtime overhead. C++ is often chosen when teams want classes, templates, and richer library support, but that extra power adds complexity. If the project needs a strict, portable base layer or must fit into constrained environments, C is still a strong choice.

A strong C professional usually knows Linux or Unix systems, shell tooling, debugging with GDB, and build systems such as Make or CMake. For embedded work, hardware interfaces, cross-compilation, and basic electronics knowledge help a lot. Code review, testing, and static analysis are also important.

The answer depends on the risk. Small utilities or isolated library changes may need only focused C expertise, while kernel work, device drivers, or safety-sensitive code need someone who has handled similar complexity before. If memory ownership, concurrency, or ABI compatibility matter, choose a specialist with proven low-level delivery.

Many C tasks work well remotely, especially code review, refactoring, build fixes, and library development. On-site is useful when hardware access, lab equipment, or tight collaboration with local teams matters. In Zurich, many companies combine both: remote implementation and on-site sessions for testing or integration.

Look for clear reasoning about ownership, bounds, error handling, and portability in C code. Good experts can explain why they chose a certain data layout, how they tested it, and what risks remain. Strong signs also include careful use of sanitizers, static analysis, and clean handling of build warnings.

Yes, C remains a practical choice for both. It is often the safest way to maintain old codebases, but it also works well for new components that must be small, fast, and portable. The key is to match the language to the problem, not force it everywhere.

The average hourly rate of freelancers in Zurich, Switzerland who have used C in their recent projects is 114 €, which corresponds to a daily rate of about 909 € based on an 8-hour working day.

Of the freelancers in Zurich, Switzerland who have used C in their recent projects, 75% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 25% 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 Greek (20%).

The most common industries among freelancers in Zurich, Switzerland who have used C in their recent projects are Banking and Finance (70%), Information Technology (70%), and Government and Administration (60%).

The most common business areas among freelancers in Zurich, Switzerland who have used C in their recent projects are Information Technology (100%), Product Development (90%), and Project Management (90%).

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:

Zurich Geneva Basel Bern

Request a free demo

Get in touch with the FRATCH team and we will get back to you within 4 hours.

Contact form

Would you rather directly get in touch?
We always have the time for a call or email!

FRATCH CEO avatar

Philipp Thomaschewski

FRATCH CEO

LinkedInFRATCH