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C Experts in Frankfurt

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Hire experts who write efficient C for embedded systems, operating system components, drivers, and performance-critical services. Get vetted, available specialists matched fast and precisely to your project needs.

Meet FRATCH Experts in Frankfurt, who have recently used C

Verified expert

Torsten Feix

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Data Analyst, Requirements Manager

Dreieich
Torsten Feix

Last position:

Data Analyst, Requirements Manager at Isabellenhütte Heusler GmbH

  • Analysis of the existing reporting platform including processes and governance topics with stakeholders from sales and marketing.

  • Detailed analysis and evaluation of client-defined requirements for existing reporting and new dashboards.

  • Supporting stakeholders in managing sales processes and early detection of KPI trends.

  • Use of Microsoft Power BI as central analysis and reporting platform.

  • Developing a proposal for the necessary evolution of processes and the Power BI platform.

  • Gathering current business processes and defining company-wide KPIs in coordination with stakeholders.

  • Analysis and inventory of the client's Power BI platform.

  • Analysis of processes and data governance.

  • Recording and documenting current business processes.

  • Developing recommendations for process and reporting platform improvements.

  • Designing and implementing dashboards in Power BI.

  • Defining company-wide KPIs and aligning them with stakeholders.

  • Microsoft Power BI.

  • Data analytics.

  • KPI definition and reporting.

  • Dashboard design and data visualization.

  • Stakeholder management and requirements management.

Verified expert

Tan Pham

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DevOps & Fullstack Engineer

Hanau
Tan Pham

Last position:

DevOps Engineer in the DevOps Team at Rise-World

  • Implementation of specified DevOps solutions to automate infrastructure (Terraform, Bicep, CloudFormation, Ansible) on-premises datacenter (Ovirt, Proxmox, Ceph Cluster, MinIO) and private cloud.
  • Administration, configuration and implementation of CI/CD DevOps pipelines (GitLab, GitFlow) to support development process (Artifactory, Prometheus, Istio, service mesh, Helm Chart, OpenShift (Red Hat Enterprise) / Kubernetes cluster), Red Hat Satellite.
  • Administration, setup, monitoring and patching of Linux infrastructure based on Red Hat Enterprise for Dev, Test and QA.
  • Use of Scrum and Kanban methods.
  • Administration, configuration and implementation of security standards for deploying on Dev, Test, QA and Prod stages of the new ePA applications.
  • Development of new plugins and add-ons needed on current infrastructure.
  • Database support.
  • Data analytics support (Python, Spark, Pandas, Power BI, Splunk Enterprise).
  • Implementation of best practices for DevSecOps and BizDevOps using GitOps (ArgoCD), Streamlit framework, Semaphore Ansible UI.
  • Configuration and testing of iperf, uperf, sysbench using benchmark-operator for external source data and IoT/MDM devices, creating reports via ELK / OpenSearch.
  • Building a new Databricks platform to collect and analyze big data from different sources and IoT devices into Hadoop framework (Python, Pandas, PySpark, Power BI, Apache Airflow).
  • Building backend data aggregation and processing to automate configuration deployment between different OpenShift clusters and big data framework (Python, Pandas, PySpark, Apache Spark, PostgreSQL, Django 2, Ansible Automation, Jira JSM).
  • Building a new ML pipeline platform using Kubeflow, TensorFlow, KServe.
  • Data extraction, transformation and loading from different data sources including structured and unstructured data to analytic DWH / big data cluster using Python, Pandas, Polars, Power BI, Django backend and PostgreSQL.
  • Setup of new DevOps Test and QA HashiCorp Vault cluster for PKI and IAM.
  • Configuration and testing of automated patching based on CVSS score, SIEM-integrated CVEs.
  • Use of Nexpose and InsightVM to scan vulnerability events in network, host, container and application.
  • Design and implementation of secure and scalable AWS architectures including VPC, EC2, S3, RDS and Route53 and similar setups on Azure and GCP.
  • Automated system provisioning and deployment using CloudFormation templates.
  • Configuration of IAM roles, policies and permissions to ensure secure access control.
  • Patch management, backup automation and disaster recovery setup on AWS infrastructure.
  • Monitoring and optimization of system performance using AWS CloudWatch and AWS Trusted Advisor.
  • Support of VMware services (vSphere, Aria, Horizon) and the virtual desktop environment.
  • Development and maintenance of CI/CD pipelines using Jenkins, GitLab CI/CD and AWS CodePipeline with interface to Nutanix.
  • Configuration of AWS CloudWatch to monitor application performance and system events.
  • Planning and execution of migration of on-premises applications to AWS cloud platforms.
  • Deployment of containerized applications using Docker and Kubernetes in AWS environments.
  • Deployment of internal software packages between availability zones using AWS CodeDeploy.
  • Building and deploying ML models using Scikit-learn, XGBoost and Spark MLlib including hyperparameter tuning, model evaluation and production deployment.
Verified expert

Ulm Paunel

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Freelance IT Specialist

Steinbach (Taunus)
Ulm Paunel

Last position:

DataStage ETL Expert at ING Bank

  • Datastage 11.7, dbt, Oracle 19, Python 3.12 / PySpark 3.5, Azure GitHub, Azure DevOps, Automic
  • Development of migration jobs to transfer data from the collection DWH to the new Risk Mart, as well as development of ETL pipelines to migrate historical data from the old Mart to the new Risk Mart.
  • Storage of the silver layer on Hadoop and the gold layer in Oracle.
  • Translation of DataStage jobs into dbt to publish reporting data in Google Cloud to a PostgreSQL database.
  • Creation and optimization of complex SQL queries for data extraction from a data vault, taking into account historical data in the point-in-time tables.
  • Creation of Oracle table definitions (DDL) and adjustment of existing stored procedures.
  • Versioning changes in GitHub and deployment via the CI/CD portal.
  • Refactoring long-running DataStage jobs into Python using PySpark to reduce server load.
  • Migration of SAS scripts to PL/SQL, including new development of distribution functions that have no direct equivalent in Oracle.
  • Development of Automic jobs to run DataStage pipelines and Python scripts (PySpark jobs) that control the population of the SME and institutional risk tables in the Risk Mart and perform business calculations.
  • Participation in the agile process, including creating user stories, estimations, and planning in Azure DevOps.
  • Handling Azure DevOps tickets and close collaboration with testers and business teams for error analysis and resolution.
Verified expert

Andreas Ilias

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Senior Cybersecurity Governance & ISMS Consultant

Frankfurt am Main
Andreas Ilias

Last position:

Cybersecurity Specialist Assessor at Bundesnetzagentur

  • Recognition of national notified bodies
  • Preparation of cybersecurity competency reports
  • EU Radio Equipment Directive
Verified expert

Arne Hook

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Managing Director

Frankfurt am Main
Arne Hook

Last position:

Managing Director at HebRech GmbH & Co.KG

  • Restructuring the company in a challenging market environment while facing a decline in customers

  • Introducing clear processes, optimizing workflows, implementing financial guidelines and compliance from the corporate group

  • Setting up marketing automation for existing customers to curb customer loss

  • Building an active sales channel for additional services such as the telematics infrastructure

  • Establishing and launching an agile development process

  • Merging the Munich site (MUC Vorhammer GmbH) into HebRech GmbH & Co. KG to improve efficiencies

  • Developing and launching a cloud-based documentation software for midwives

Verified expert

Werner Keil

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Test Coordinator, Designer and Engineer

Bad Homburg
Werner Keil

Last position:

Test Coordinator, Designer and Engineer at IBM

  • Testing the SekIDP and related components
  • Test design, execution and automation, microservices, GitHub Enterprise, Eclipse, Katalon Test Platform, API Testing, Confluence 8, JIRA/Xray, Draw.io, Swagger/OpenAPI, Postman, Docker, Kubernetes, Podman, PuTTY, E-Health, Telematik, Gematik standards, EPA, E-Rezept, sektoraler IDP, encryption, XaDES, PaDES, DICOM, HL7, FHIR, IHE, ICD, SSO, SAML/Shibboleth, OAuth, smartcards, JWT, two factor authentication Android and iOS, Wireshark, BrowserStack, Cypress, gRPC, REST, SOAP, WS-Security, Linux Shell, PowerShell, SSH/SSL, Java, Kotlin, Cordova, Gradle, Groovy, Python, TypeScript
Verified expert

Christos Poulkas

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Product management for the case handling system

Frankfurt
Christos Poulkas

Last position:

Product management for the case handling system at Federal Criminal Police Office (BKA)

  • Technical translation of customer requirements into actionable solutions
  • Support for technical aspects of product development
  • Analysis of technically complex processes
  • Support during test execution
  • Close collaboration and coordination with the vendor
Verified expert

Andreas Schenk

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Project Management, Development and Test- (Defect-) Management

Offenbach
Andreas Schenk

Last position:

Project Management, Development and Test- (Defect-) Management at safarica.com

  • Creation and implementation of a multilingual, relational MariaDB database to reflect the requirements of a booking system designed for safaris in Africa
  • Testing the front- and backend functionality, registration of clients and suppliers, the editorial system and the payment workflow
  • Defect management and documentation via BugHerd
  • Implementation of an automatic internal deployment of deliveries provided by an external company via bash scripts
  • Coordination of external companies in the function of a project manager (Stakeholder Management)
Verified expert

Jochen Hinrichsen

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Managing Director

Eschborn
Jochen Hinrichsen

Last position:

DevSecOps Expert at DB InfraGO

  • Central build and delivery for 20+ applications, 100+ pipelines/day, 700+ GitLab projects
  • Build pipelines for Go, Java and JavaScript
  • Provisioning of 100+ components
  • Quality assurance via GitLab Code Quality and SonarQube
  • Checks for dependencies, licensing and vulnerabilities
  • Release creation via Jira and ServiceNow
  • SBOM, Supply Chain Security, distroless images
  • PoC GitLab Runner: Nomad vs. Kubernetes
  • Technologies: Artifactory, buildah, GitLab Premium, Go, Gradle, Jenkins, Mend, Podman
Verified expert

Abdullah Abdullah

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Technical Program Manager - IT & Corporate Social Responsibility (CSR)

Frankfurt am Main
Abdullah Abdullah

Last position:

Technical Program Manager - IT & Corporate Social Responsibility (CSR) at Maxon Computer GmbH (a Nemetschek Company)

  • Led cross-functional compliance and IT programs spanning infrastructure, security, legal, and executive stakeholders, ensuring audit readiness and regulatory alignment.

  • Acted as single point of ownership for IT governance and CSR programs, defining scope, milestones, risks, and success metrics.

  • Partnered directly with VP of IT as a governance and control counterpart, supporting security incidents, compliance posture (ISO 27001, GDPR, SOC 2), and executive reporting.

  • Supported organizational readiness for emerging EU regulations, including the EU Cyber Resilience Act (CRA) and EU AI Act, by analyzing regulatory requirements, identifying governance and compliance impacts, and aligning internal policies and control processes.

  • Designed and scaled data collection and reporting processes for CSR and regulatory reporting across group and subsidiary level.

  • Drove process improvements and standardization, increasing transparency, predictability, and audit readiness.

  • Technologies and tools: Office 365 Power BI, MS SharePoint, MS Word, MS Excel, MS Teams, Zendesk, Confluence, JIRA, Vanta.

Verified expert

Peter Voloshin

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IT Consultant

Weiterstadt
Peter Voloshin

Last position:

IT Consultant at Evotec KG

  • Operation and administration of Windows 2016 / 2019 servers and domains
  • Infrastructure services (Active Directory, ADFS, AD Azure Connect, DHCP, DNS, Group Policies)
  • Consulting, support and troubleshooting of customer systems
  • Documentation and concept design in the area of MS Active Directory
  • Updating operation, process and system documentation
  • Ticket handling (remote analysis and resolution via incident, change and problem management)
  • Technologies: Windows 2022, Active Directory, ADFS, AD Azure Connect, DHCP, DNS, GPO, VMware vSphere, CheckMK, Exchange 2019, PowerShell, Jira, Confluence, Office 365, Matrix42, NetApp, Ansible
Verified expert

Ralf Köster

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Senior Java Developer, Consultant

Frankfurt am Main
Ralf Köster

Last position:

Senior Java Developer, Consultant at Dataport AÖR

  • Maintenance and further development of the Java/Swing-based @rtus FormsEditor
  • Design and development of a graphical formula editor based on Google Blockly to map a project-specific DSL, including parsing and code generation
  • Implementation of pixel-perfect synchronization between editor and print preview to improve user experience
  • Technologies: Java 17/21, Swing, JavaFX, JBoss/Wildfly, JUnit, Mockito, Blockly, JPedal, ICEPDF, Eclipse
Verified expert

Michael Yaco

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Senior Consultant, Senior DevOps Engineer

Offenbach am Main
Michael Yaco

Last position:

Senior Consultant, Senior DevOps Engineer at DB Regio AG

  • Supported implementation and operation of a portal used online and offline in customer-facing vehicles
  • Automated processes by introducing CI/CD pipelines
  • Provided enablement and methodological guidance for adopting software engineering best practices
  • System environment: NestJS, Node.js, npm, AWS, Docker, Docker Swarm, GitLab CI, WhiteSource, PostgreSQL, Prometheus, Grafana, OpenSearch, REST API
Verified expert

Mohammad Ashraf

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ParkProReakt

Offenbach am Main
Mohammad Ashraf

Last position:

ParkProReakt at Justus Liebig University Giessen

  • proactive instead of reactive symptom detection in Parkinson patients
  • iOS development
  • FHIR integration
  • database structure

Discover over 15,000 top freelancers

Statistics of experts using C

Aggregated from the professional profiles of matched freelancers.

Experience

26 years (Germany: 23 years)

Position duration

2.6 years (Germany: 3.1 years)

Positions per freelancer

17 (Germany: 14)

Top business areas

Information Technology, Project Management, Product Development

Top industries

Information Technology, Banking and Finance, Telecommunication

Certification focus areas

Information Technology, Operations, Project Management

Bachelor's degree or higher

83% (Germany: 88%)

Master's degree or higher

61%

Doctorate

6% (Germany: 11%)

Certifications per freelancer

4 (Germany: 3)

Most common languages

German, English, French

Speak two or more languages

95% (Germany: 98%)

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 2 4 6 8
<€640 €640-​800 €800-​960 €960-​1120 €1120+

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

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

1000
750
500
250
Rate comparison chart
Daily rate avg. 803 €
Germany avg. 767 €

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 800 €
Germany median 760 €

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 use

C is used where control, speed, and small runtime overhead matter. Companies rely on it for system software, embedded firmware, network tools, and performance-sensitive libraries. It also appears in existing codebases that need careful maintenance, porting, or security hardening.

Typical work

  • Embedded firmware and device control
  • Operating system and kernel-adjacent components
  • Protocol handling, parsers, and low-level utilities
  • Legacy C code review, refactoring, and bug fixes
  • Performance tuning and memory safety improvements

Ecosystem

Strong C specialists work comfortably with GCC, Clang, Make, CMake, GDB, Valgrind, sanitizers, and static analysis tools. They know how to use headers, translation units, build flags, and linker behavior without guesswork. Good work also means clear use of the standard library and disciplined memory handling.

When to bring in help

Companies bring in freelance C experts when a product depends on low-level stability or a release is blocked by hard-to-isolate defects. That is common in Frankfurt teams supporting finance infrastructure, telecom systems, industrial software, and embedded products. It also helps when a team needs local on-site collaboration for sensitive systems, while much of the work can stay remote.

What strong experts do

A strong C specialist writes code that is readable, testable, and defensive. They track ownership, lifetimes, pointer use, and edge cases closely, and they document interfaces so other specialists can maintain the code later. They also know when to keep a design simple instead of adding layers that C does not need.

Hiring focus

Look for proof in shipped libraries, device software, tooling, or long-lived production systems. The best experts explain tradeoffs clearly, handle debugging methodically, and understand the difference between making code compile and making it robust. In Frankfurt, strong communication in English is common, and German helps when teams work closely with local stakeholders.

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Frequently asked questions

The facts hiring teams ask for most often when it comes to C.

C is usually used for software that needs direct control over memory, hardware, or timing. That includes firmware, drivers, operating system code, parsers, communication layers, and small fast utilities. It is also common in older systems that still run business-critical workloads.

C is simpler at the language level than C++, but it gives less safety by default. Compared with Rust, it is more manual and usually easier to adopt inside existing low-level code, but it requires tighter discipline around memory and pointers. Companies choose C when compatibility, predictability, or an existing codebase matters more than higher-level abstractions.

A strong C specialist usually knows debugging, build systems, and memory diagnostics. Useful adjacent skills include Linux, GCC or Clang, Make or CMake, GDB, and tools such as Valgrind or sanitizers. For embedded work, hardware interfaces and firmware workflows matter as well.

A C project usually needs someone who has already worked on production code, not just classroom examples. The language is small, but real projects are full of edge cases around pointers, ownership, ABI boundaries, and legacy constraints. The more critical the system, the more important that proven experience becomes.

Yes, C work can often be done remotely, especially for libraries, tools, and backend components. Teams in Frankfurt sometimes prefer on-site support when the code is tied to hardware, secure environments, or tightly coordinated reviews. A good setup is often hybrid, with remote implementation and local sessions for testing or handover.

A strong C specialist leaves code that is easy to maintain, not just code that passes a test. Look for careful handling of memory, clear error paths, consistent style, and disciplined use of the compiler and static analysis. Good specialists also explain why a design is safe and where the risks still are.

C is the common name people use for the language, while ANSI C usually refers to the standardized form that came from the ANSI specification. In hiring searches, both terms often point to the same kind of specialist. If your project has strict portability needs, make sure the expert understands which language standard your code targets.

For C, the best starting point is a clear description of the system, the build setup, and the problem you want solved. Share the target platform, compiler, related libraries, and any constraints around safety or compatibility. If the work touches an existing codebase, a short overview of the current architecture helps a lot.

The average hourly rate of freelancers in Frankfurt, Germany who have used C in their recent projects is 100 €, which corresponds to a daily rate of about 803 € based on an 8-hour working day.

Of the freelancers in Frankfurt, Germany who have used C in their recent projects, 83% hold at least a Bachelor's degree, 61% hold at least a Master's degree, and 6% hold a doctorate.

On average, freelancers in Frankfurt, Germany who have used C in their recent projects have 26 years of professional experience, with a single engagement typically lasting around 2.6 years.

The most common languages among freelancers in Frankfurt, Germany who have used C in their recent projects are German (100%), English (95%), and French (30%).

The most common industries among freelancers in Frankfurt, Germany who have used C in their recent projects are Information Technology (85%), Banking and Finance (75%), and Telecommunication (70%).

The most common business areas among freelancers in Frankfurt, Germany who have used C in their recent projects are Information Technology (100%), Project Management (85%), and Product Development (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.

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