C Experts in Berlin
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Meet FRATCH Experts in Berlin, who have recently used C
Deepak Mishra
Last position:
Lead ML Platform Engineer at Billie GmbH
- Mentor team of 6 ML platform engineers through weekly 1:1s, technical design reviews, and best practices, improving team velocity by 35% through structured sprint planning and skill development programs
- Define 2025–2026 ML platform roadmap in collaboration with Data Science, Cloud Engineering, and Product teams, prioritizing automated model governance, cost attribution systems, and multi-environment deployment strategies
- Partner with Data Science, SRE, and Product stakeholders to align ML platform capabilities with business objectives, reducing data scientist deployment friction by 60% through self-service platforms
- Architect and deliver production-grade MLOps platform supporting 50+ models in production with automated promotion pipelines, versioning, and rollback capabilities, achieving 99.5% platform uptime SLA
- Design distributed ML pipeline architecture using Metaflow and Argo Workflows (Vertex Pipelines-compatible), reducing model training time by 30% and deployment cycles from 2 weeks to 3 days through full CI/CD automation
- Build containerized ML services on Kubernetes with auto-scaling policies, resource quotas, and multi-tenancy isolation, optimizing infrastructure costs by $180K annually (25% reduction)
- Implement monitoring, alerting, and performance tracking using Prometheus, Grafana, and custom instrumentation, reducing model debugging time by 50% and establishing model performance SLOs
- Lead development of RAG-based document intelligence platform using LangChain, LangGraph, and vector databases, implementing agentic AI workflows for automated financial document processing
- Implement Infrastructure-as-Code using Terraform for reproducible environment provisioning and GitOps workflows, reducing infrastructure drift incidents by 80%
- Design role-based access control for ML platform, implement model lineage tracking, and establish audit trails for regulatory compliance aligned with enterprise IAM best practices
Sunish Bharathan
Last position:
AtlasMind - Production AI assistant for Jira at Mercedes Benz Innovation Labs Gmbh
- Converts natural language into JQL using RAG and pgvector. Returns structured JSON with a query, chart spec, and plain-text answer. A two-stage router answers general questions without touching the JQL pipeline at all.
- Interchangeable LLM backends: Ollama, vLLM, Groq, Anthropic Claude, AWS Bedrock - switchable at runtime, no code changes. Self-healing JQL: on Jira validation failure, feeds error back to LLM, retries up to 4 times. OCI Vault for secrets. Deployed on Oracle Cloud A1 with GPU inference over Tailscale private network. Open source.
Hendrik Wagner
Last position:
Software Test and Maintenance Support at Anton Paar ProveTec GmbH
- Add/create test specifications
- Conduct regression tests
- Conduct release tests
- Analyze Jira tickets
- Identify software defects and fix them with C#
Jevgeni Beliaikin
Last position:
orderbird
- Supported orderbird in setting up and driving an internal advanced analytics project for the internal customer dashboard
- Structured the internal dashboard project for later development
Marcus König
Last position:
Director of Go-to-Market & Operations at Gilion AB
- International expansion & segment strategy: Built Germany footprint from zero, scaling to 1,000+ SaaS customers across four European markets, developing vertical value propositions, use cases, and segmentation models
- Planning, OKRs & single source of truth: Designed forecasting frameworks, pipeline diagnostics, territory/quota structures for a 30+ FTE commercial org, and established OKR-driven execution with shared dashboards and decision logs
- Operational excellence, automation & regulated delivery: Applied Lean Six Sigma methods and implemented automation and AI tooling across CRM and reporting, simplifying end-to-end workflows and reducing manual effort by ~25%
- Growth enablement & CX: Owned cross-functional growth experiments that increased activation by 30% and DAUs by 10% in a hybrid PLG + enterprise model
- Change management & cross-functional execution: Set KPI agreements with shared services, championed internal change programs, and drove adoption of new operating rhythms and tooling
- Risk management & portfolio steering: Established risk-aware customer prioritization and partnered with risk and finance teams on portfolio steering and resource allocation
Diogo Soares
Last position:
Backend Engineer and AI Orchestrator at Stealth Startup
- Providing freelance software engineering and AI orchestration services for an early-stage startup.
- Designing and coordinating autonomous AI systems capable of executing complex, multi- step workflows.
- Developing customer-facing pilots and proof-of-concept solutions.
- Participating in meetings with customers and investors to support product development and business discussions.
Alexandro Lahmann
Last position:
Senior Project Manager - RIS & PACS Replacement
- Replacement of a RIS and PACS system in combination with three different software solutions, with a focus on redesigning and further developing existing processes.
- Ensuring the interaction of the individual solutions and their integration into one overall solution to provide optimal support for medical staff in their daily work.
- Overall project management including coordination of three service providers.
- Use of technologies and solutions such as RIS, PACS, Smart Reporting, and Artificial Intelligence.
- Leading the RIS & PACS replacement in a hospital.
- Support with the communication strategy.
- Coordination of external and internal resources.
- Stakeholder management.
- Steering of steering committees.
Ola Van Dunen
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Valentin Reuter
Last position:
Freelance Hardware Development Engineer at Swarm Biotactics
PCB design with Altium, MCU Programming, Prototyping
G Purushothm
Last position:
Oracle Apps Technical Consultant, Oracle EBS to Oracle Fusion SCM Migration Specialist at LTIMindtree India PVT LTD.
- Client: Terex Corporation
Phylis Zühl
Last position:
Freelance Head of the Office of the DGKL Presidium at Society for Clinical Chemistry and Laboratory Medicine
Inbal Ipenberg
Last position:
Patent Engineer, Life Sciences at Schulz Junghans Patentanwälte PartGmbB
- Generated and submitted a complete patent application to the European Patent Office
- Drafted comprehensive patent applications, including detailed claim sections
- Analyzed inventions from multiple projects to identify innovative aspects
- Conducted comprehensive research on the state of the art and communicated results to stakeholders
- Collaborated with customers and various stakeholders to coordinate patent objectives and develop patent portfolios
Alexander Vitanyi
Last position:
Product Owner at FI-TS
- Rebuilding an existing cloud solution with Kubernetes, Terraform, Ansible, Prometheus, Grafana, GitLab, Argo CD and PostgreSQL
- Coordinating and managing external partners and service providers
- Ensuring service delivery on time and on budget with budget responsibility
- Integrating the cloud solution with external public clouds (AWS)
- Setting up and defining processes and workflows in Jira and Confluence
- Product management of software development for automation and self-service in CI/CD DevOps mode
- Agile software development with Kanban and Scrum in various development teams
- Single point of contact for key customers in respective projects
- Creating and aligning the product backlog with stakeholders from sales, architecture, development teams, marketing, management and customers
- Migrating existing customers to the AWS cloud as product owner
- Creating and aligning a product roadmap with internal and external stakeholders
Anuja Chandran
Last position:
Embedded Software Engineer at Digital Core Technology
- Designed and implemented embedded firmware in C/C++ for ARM-based microcontrollers and SoCs (STM32, NXP, Infineon)
- Worked across bare-metal, FreeRTOS, and Embedded Linux environments, contributing to BSP-level functionality, driver bring-up, and system integration
- Built, configured, and validated Embedded Linux systems using Yocto, including image build, boot validation, and runtime debugging
- Developed and executed unit, integration, and system-level tests, including HIL and SIL test scenarios on real hardware and simulated environments
- Created Python and Bash scripts to automate build, test execution, simulation runs, and reporting within CI/CD pipelines (Jenkins, GitLab CI)
- Designed test cases from software and system-level requirements, covering normal operation, edge cases, and failure scenarios
- Performed low-level debugging using JTAG/GDB, analyzing boot issues, timing problems, interrupts, and peripheral behavior
- Developed and validated communication interfaces including UART, SPI, I2C, CAN using logs and external measurement tools
- Used simulation and virtual test environments to validate software behavior prior to hardware availability
- Read and interpreted hardware schematics to understand signal routing, pin multiplexing, and peripheral connections
- Supported PCB design and review activities using Altium tool, assisting with component selection, pin mapping, and bring-up readiness
- Collaborated with cross-functional hardware, firmware, and system teams to clarify requirements, document assumptions, and improve overall test coverage
- Developed web interfaces using HTML, CSS, and JavaScript (ES6) and basic REST API development with Node.js
- Experience testing web applications and building UI automation frameworks using Selenium WebDriver
Alberto Galván De La Rosa
Last position:
C#/.Net Developer at Pean-IT GmbH
- Developed high-performance REST API interfaces in C# for Investitionsbank Berlin (IBB) using CI/CD (Git, Azure DevOps).
- Developed the "Pean Admin Center" using the Microsoft Graph API (backend: C#, frontend: Vuetify), implemented via CI/CD pipelines (Azure DevOps).
- Created low-code business applications and automated processes with Power Apps and Power Automate.
- Set up and designed the online shop for Pestalozzi-Fröbel-Haus (PFH) via Wix.
Discover over 15,000 top freelancers
Statistics of experts using C
Aggregated from the professional profiles of matched freelancers.
Experience
17 years (Germany: 23 years)
Position duration
2.8 years (Germany: 3.1 years)
Positions per freelancer
11 (Germany: 14)
Top business areas
Product Development, Information Technology, Research and Development
Top industries
Information Technology, Manufacturing, Healthcare
Certification focus areas
Information Technology, Business Intelligence, Project Management
Bachelor's degree or higher
94% (Germany: 88%)
Master's degree or higher
82% (Germany: 61%)
Doctorate
24% (Germany: 11%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
English, German, French
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 Berlin 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 Berlin 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 use
C is the language behind system software, embedded firmware, device drivers and performance-critical services. Companies use it when they need close hardware control, small runtime overhead and predictable behavior. It also appears in network tools, operating system components and long-lived codebases that still run essential business logic.
Typical work
- Embedded firmware for devices, controllers and industrial systems
- Runtime libraries, parsers and command-line tools
- Device drivers, protocol handling and low-level integration
- Maintenance of ANSI C and ISO C code in legacy products
Ecosystem
Strong C work depends on the compiler, debugger and build chain as much as on the code itself. Experts often work with GCC, Clang, Make, CMake, GDB and sanitizers, plus static analysis tools and cross-compilers for different chips or operating systems. They also understand headers, linking, memory layout and how to keep code portable across platforms.
When to bring in help
Freelance C experts are useful when a team must fix hard bugs, modernize old code, port software to new hardware or review risky changes before release. They are also a good fit for short, focused work in Berlin where local teams may need on-site support for hardware labs, or remote collaboration on mature codebases. Clear documentation and reproducible builds matter here.
What good looks like
Good C professionals write code that is simple, testable and explicit. They can explain ownership, lifetime and error handling without hand-waving, and they know how to reduce undefined behavior before it becomes a production issue. They should also be comfortable reading unfamiliar code, because many C projects are large, old and partly undocumented.
Common project shapes
C shows up in firmware updates, safety checks, communication stacks, data collectors and performance fixes. It is also common in migration work, where an older C library must keep its interface stable while the internals are cleaned up. Companies often bring in specialists for review, refactoring and release support rather than full rebuilds.
Frequently asked questions
Not sure where to start with C? These answers cover the essentials.
C is used for software that needs speed, small overhead and direct control over memory and hardware. That includes embedded firmware, operating system parts, device drivers, parsers and performance-sensitive libraries. It is still a common choice when a product must run close to the metal or stay stable for a long time.
C is simpler at the language level, but that simplicity shifts more responsibility to the specialist. Compared with C++, it has fewer abstractions and a smaller standard library; compared with Rust, it offers less built-in safety but often easier integration with existing code and hardware. The right choice depends on the platform, the team and how much legacy code already exists.
C expertise matters when a project has memory bugs, build issues, portability problems or hardware integration work. It is also useful when legacy code needs careful changes without breaking a stable interface. If the software is close to the operating system or device layer, a specialist can save a lot of rework.
A strong C professional usually knows the compiler toolchain, debugging, profiling and build systems such as Make or CMake. Knowledge of Linux, embedded targets, cross-compilation and static analysis is often important too. For some projects, protocol design, shell scripting and a good grasp of testing frameworks also help.
Not always, but C work usually benefits from someone who can spot undefined behavior, fragile APIs and memory leaks early. Smaller maintenance tasks may need only a focused specialist, while a port, driver or firmware effort often needs deeper experience. The key is matching the complexity of the codebase, not just the language name.
Yes, many C projects can be done remotely if the build system, target hardware and test setup are accessible. On-site work can still help when physical devices, lab equipment or secure environments are involved. In Berlin, teams often mix remote collaboration with short on-site sessions for integration and debugging.
Look for clear explanations of memory ownership, error handling and portability choices in their past work on C systems. Good specialists can describe how they debugged crashes, reduced warnings or made a build portable across compilers or targets. Code review samples and a practical test task are often better than a long list of broad claims.
C is still a strong choice when performance, binary size, hardware access or strict platform control matter. It is not the best fit for every product, especially if the team wants rapid feature work and richer abstractions. Many companies choose it for the core layer and pair it with higher-level software around it.
The average hourly rate of freelancers in Berlin, Germany who have used C in their recent projects is 98 €, which corresponds to a daily rate of about 782 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used C in their recent projects, 94% hold at least a Bachelor's degree, 82% hold at least a Master's degree, and 24% hold a doctorate.
On average, freelancers in Berlin, Germany who have used C in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 2.8 years.
The most common languages among freelancers in Berlin, Germany who have used C in their recent projects are English (100%), German (97%), and French (22%).
The most common industries among freelancers in Berlin, Germany who have used C in their recent projects are Information Technology (81%), Manufacturing (44%), and Healthcare (42%).
The most common business areas among freelancers in Berlin, Germany who have used C in their recent projects are Product Development (83%), Information Technology (78%), and Research and Development (53%).
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.
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Leipzig 
Dortmund 
Essen 
Hanover 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
