OpenGL Experts in Germany
in minutes from over 15,000 CVs with vetted specialists ready to deliver.Hire experts who create real-time graphics, optimize rendering pipelines, and troubleshoot shader and context issues across desktop apps, simulation, and visual tools. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used OpenGL
Oliver Ohly
Last position:
Embedded Software Architect at Automotive supplier
Stellar SR6 G7 line, 32-bit Arm® Cortex®-R52+ MCU.
- MISRA-C, C99, Greenhills ARM compiler
- Dassault AUTOSAR Builder
- EB Tresos
- Sparx Enterprise Architect 16.1
- VS Code
- Python xml, lxml, NumPy and Pandas
ISO 26262, ISO 21434, hypervisor, key management, HSM. Tooling & automation. LieberLieber LemonTree + Sparx EA. Jira, Confluence, SharePoint. Git/Github. DevOps through Jenkins & Conan.
Patrick Waldschmitt
Last position:
AI Software Engineer at IppenMedia
- Analysis
- Consulting
- Software design
- Development
- Automation
- Testing
- Deployment
- Architecture, development and deployment of various proof-of-concept applications around the integration of current AI interfaces including conversational, realtime voice, images and videos
- Developed best practices for working with agentic systems and AI in practice
- Created code templates
Minh Doan
Last position:
Project Manager / Business Analyst / Application Manager at Finance and Insurance
Introducing 5 different process applications for various teams
Release planning: scope and time management
Resource/capacity planning
Conducting sprint planning / retrospectives
Increment planning (multiple sprints)
Preparing steering committee meetings / reporting to the executive board
Coordinating / aligning with external suppliers / deliveries
Multi-project resource planning
Aligning with the business unit and development team
Identifying best practices with IBM BAW
Cost control and planning for the project team and external service providers
Collecting KPIs using LogScale
Analyzing application errors with LogScale / queries
Defining user stories / aligning requirements with the business unit and development team
Testing and defect tracking
UI/UX design of the application
Preparing and facilitating brown-paper workshop
Test concept, test data, test organization, test execution
Recording team velocity / metrics
Executing tests
Scripts for automated testing
Organizing tests with the business unit and IT
Recording and prioritizing defects
Setting up and operating the application
Setting up application monitoring with LogScale dashboards
Checking health endpoints with PowerShell
Post mortem analysis
Setting up incident management
Setting up problem management
Analyzing errors using LogScale queries and dashboard
Pre-processing data for AI
Conducting evaluation with AI language models (Meta Llama 3.3 LLM and deepset Haystack) and RAG
Installing runtime environments for LLMs (large language model)
Evaluating various LLMs
Installing RAG (retrieval augmented generation) and integrating with LLM
Extracting unstructured data with LLM and RAG
Project based on IBM BAW (Business Automation Workflow), WebSphere Liberty, Domea, d.3, REST, LogScale (formerly Humio), Swagger, PowerShell, JIRA, Confluence, Lucom Interaction Platform (LIP), Mattermost, Jabber
Svyetoslav Pidgornyy
Last position:
CTO at Skar Audio
- Main developer in an online retail company
- Built an online shop using the Next.JS React framework
- Integrated the site with dozens of third-party apps using REST and GraphQL APIs
- Built a backend for order management, warehouse management (with iPhone app), and supply management
- Automated invoicing and finances with QuickBooks
René Welland
Last position:
Conference Operator at Brähler Systems GmbH
- Developed the iOS/Android Delegate App and the Conference Operator
- Updated and developed a user-friendly conference environment and real-time video streaming
- Optimized the overall conference experience by implementing customizable features for flexible setup
- Enhanced the efficiency and usability of conference technology, enabling a seamless workflow and improved participant interaction experience
Alban Tchuinkou
Last position:
C/C++ Developer on AIX Systems for SAP Kernel System Integration at IBM Research and Development
- AIX/Linux system administrator: deployment of LPARs (Logical Partitions) for SAP Kernel Development
- C/C++ SAP kernel development and integration to SAP HANA Database
- C/C++ programming and software integration, support for SAP kernel on AIX system; development and testing on SAP VDI
- Example: development of the ABEC Tool (AIX Build Environment Checker) to create SAP build environments for debugging process and benchmarking
- Benchmarking and test execution of SAP kernels (test from the communication to the SAP HANA Database and to SAP NetWeaver) on AIX
- Automate the SAP kernel build via Jenkins and benchmarking over crontab jobs
- New C/C++ compiler design and testing (based on Clang++ and LLVM)
- Customer ticket handling to resolve SAP kernel bugs and build failures
- SAP kernel development with Rust programming language, migrating some sub-kernel projects from C/C++ to Rust because of Rust's memory safety model, ownership system, and concurrency features
- Refactoring selected components in Rust and integrating them with existing C++ codebase via FFI
Mehmet Fatih Sönmez
Last position:
Online Simulation Based Digital Twin Software Developer at BAM - Federal Institute for Materials Research and Testing
- Contributed to development of an online simulation-based digital twin of bridge infrastructure project.
- Created packages implementing computational and statistical modules for the digital twin.
- Modeled the structure using FEniCSX within a Python environment.
- Integrated real sensor data with the virtual model via APIs.
- Used inference models to predict the future state of the bridge.
Thomas Klaube
Last position:
Software Design & Development: VideoDownloader at Ing.-Büro Thomas Klaube
Development of an application for macOS to view and download video streams as well as to view and record live TV streams.
Technologies: C/C++, Objective-C, Qt 6.7.2 / Qt 5.9.6, QtCreator, QtDesigner, QtLinguist, Xcode, UI development based on QtWidgets, qmake, make, git, shell scripting, Apple LauchAgents, Apple AVFoundation, ffmpeg, ffplay, fffprobe.
Platforms: macOS Sonoma, macOS Mojave.
Atef Abdel-Rahman
Last position:
System, load, acceptance and performance testing and QA manager for banking systems
- Test concept, planning and execution
- Coordination of the different test phases
- Project planning within the team, design of the structure and test strategy
- Coordination and review of test activity execution and deviation management
- Derivation of test cases for newly developed features with respect to functional and non-functional requirements and subject matter
- Participation in status meetings
- Documentation of technical components
- Description of the qualitative and quantitative goals of the test measures
- Definition of testable acceptance criteria
- Screening of new and existing customers for negative information
- Evaluation of information and decision on whether a business relationship is still possible
- Assessment of negative information regarding sanction or terror lists
- Assessment of whether individuals have a criminal record or are politically exposed
- Continuous Integration and quality assurance (QA)
- Description of using various testing methods and approaches (static/dynamic tests, functional/non-functional tests, black-/white-box tests)
- Execution of manual and automated tests
- Fixing errors from the testing phases in applications/components
- Integration of test management in the introduction, establishment and expansion of test automation
- Creation of system test documentation
- Reporting risks and issues to technical architects and project management
- Definition of requirements for the test infrastructure
- IT system environment: Windows, SAP, Perl, C, Git, Cloud, Oracle, JavaEE, C#, SOA, XML, JavaScript, HTML5, Angular, JBoss, UML, Linux, Jira, Robot Framework, TypeScript, Python, JMeter, Tosca, Selenium, DWH, AWS Cloud, Doors
Roland Peffer
Last position:
General Manager and Owner at Clixxun GmbH
- Software design & development (external and internal projects)
- Product management
- System and software architecture
- Purchase, sales, marketing
- Software project management
- Thematic focus: Video streaming, image & signal processing, consumer electronics, medical applications, automotive HMI, learning systems
Stefan Kirsch
Last position:
Software Engineer C# .NET at Freelance Software Engineer
- Conceptualized a software interface in a large-scale project for the defense sector. No details can be shared due to classified information confidentiality.
- Designed and developed a reporting application for the acceptance testing of coordinate measuring machines according to the ISO 10360 standard series. Coordinated and led review meetings to clarify requirements within an international corporation.
- Developed a tool to back up and restore machine configurations for service operations on coordinate measuring machines.
- Consulting project to optimize and enhance an Access application for administrative tasks in an engineering office.
- Designed and developed production software for parameterizing coordinate measuring machines. Shaped the interfaces and developed automation to generate configuration bundles for different machine setups.
- Developed a service application for geometric calibration of coordinate measuring machines based on end measurement data.
- Developed a maintenance app for updating and configuring water dispensers. Managed the project through to app launch and trained and handed over the project to a client employee.
- Migrated a maintenance app for smart water filters, including finalizing it for app launch and further developing the app to support multiple protocols.
Technologies: Git, Visual Studio Code, Confluence, Protobuf, Agile, C#, .NET, WPF, MVVM, GitHub Copilot, Visual Studio, MSTest, MigraDoc, Azure DevOps, Jira, OpenRPC, JSON, Microsoft Access, Entity Framework Core, Python, YAML, Build Pipelines, WinUI 3, XUnit, Atlassian Stack, Scrum
Ahmed Mustafa
Last position:
Data Scientist at Fraunhofer Institute for Building Physics IBP
- Applied pose estimation frameworks on thermal images using infrared cameras to enhance temperature analysis and thermal comfort evaluation.
- Performed CFD simulations to analyze and visualize airflow and temperature distribution in enclosed spaces, providing data-driven insights for improving HVAC system efficiency.
- Used transfer learning to adapt pre-trained deep learning models for different tasks and datasets, improving accuracy and reducing training time.
- Handled large datasets and applied visualization techniques such as boxplots, scatter plots, and other graphical tools to identify trends, detect anomalies, and validate data accuracy.
- Built machine learning predictive models such as linear regression, logistic regression, and classification models.
- Containerized ML models and data pipelines with Docker and orchestrated scalable training and inference workflows using Kubernetes.
Yan Ozer
Last position:
Software Developer (C++, Python) at Vaillant Heizsysteme
- Implemented communication between heating system modules via the SOME/IP interface in C++
- Developed additional software components in C++
- Executed unit tests and integration tests in the GitLab CI workflow
- Set up desktop publishing functionality
- Tools: C++, Python, Linux, Robot Framework
Kornél Lehőcz
Last position:
Computer Vision Algorithm Engineer (contract) at Sony R&D Center, Stuttgart Laboratory 1
- Conducted research and development in the field of large-scale 3D reconstruction
Stefanie Schmidt
Last position:
Software Developer for web applications at Rene Schmidt DevOps UG (haftungsbeschränkt) & Co. KG
- Web application management
- Development of applications and components using PHP with Symfony and Doctrine/PostgreSQL
- CSS optimization and customization with Twitter Bootstrap, HTML, JavaScript and jQuery to company specifications
- Developed a message queue system using RabbitMQ and NodeJS
- WordPress plugin development and WordPress theme customization
- App development for Android with Flutter and Dart
- Implemented event-based action logging system with Symfony v5.2
Discover over 15,000 top freelancers
Statistics of experts using OpenGL
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
2.8 years
Positions per freelancer
17
Top business areas
Information Technology, Product Development, Research and Development
Top industries
Information Technology, Manufacturing, Automotive
Certification focus areas
Information Technology, Logistics, Product Development
Bachelor's degree or higher
95%
Master's degree or higher
63%
Doctorate
16%
Certifications per freelancer
1
Most common languages
German, English, French
Speak two or more languages
95%
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 Germany 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 Germany using OpenGL
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
What OpenGL does
OpenGL is a graphics API for drawing 2D and 3D content on the screen. Companies use it for visualizers, simulation tools, engineering software, games, and media applications where direct control over rendering matters.
Where it fits
OpenGL is common in products that need fast, hardware-accelerated graphics on desktop systems. It also appears in legacy codebases, cross-platform tools, and systems that still rely on GL for stable rendering.
Typical work
- Shader work in GLSL
- Buffer, texture, and framebuffer setup
- Rendering pipeline tuning
- Debugging context and driver issues
- Porting older GL code to newer usage patterns
Strong specialist skills
A strong OpenGL specialist knows the pipeline from geometry to pixels and can explain every stage clearly. They work comfortably with GLSL, matrices, coordinate systems, GPU state, and performance profiling.
When companies bring in help
Teams usually bring in freelance expertise when graphics code is hard to maintain, performance drops, or a release needs a visual feature delivered fast. In Germany, this often helps companies that build industrial tools, product configurators, medical visualization, or simulation software.
What good delivery looks like
Good work is readable, testable, and stable across drivers and devices. Look for professionals who document assumptions, isolate render bugs, and understand the difference between algorithmic issues, shader problems, and platform-specific behavior.
Frequently asked questions
Curious about OpenGL? Here are the answers that come up again and again.
OpenGL is used to render graphics for desktop software, visualization tools, simulations, CAD-like applications, and games. It is a good fit when a product needs direct GPU control and cross-platform rendering. Many teams still keep it in long-lived products because the graphics layer is already built around it.
OpenGL is usually easier to start with because it hides more of the low-level GPU work. Vulkan gives more control and can be better for highly demanding rendering engines, but it also adds more complexity. Many companies keep OpenGL for existing products and choose Vulkan only when they need a deeper rewrite.
A company should hire an OpenGL specialist when rendering bugs are hard to isolate, frame times are too slow, or a graphics feature needs to ship without risking the rest of the codebase. It is also a good move when the team has strong product knowledge but limited GPU or shader experience. That support can be short-term or part of a larger modernization effort.
A strong OpenGL professional usually also knows GLSL, GPU memory use, math for transforms, and debugging tools for graphics pipelines. Experience with C or C++, windowing systems, and platform differences is often important too. For some projects, knowledge of texture formats, camera systems, and post-processing is valuable as well.
Yes, OpenGL work is often well suited to remote collaboration because much of the delivery is code, profiling, and shared screen debugging. For teams in Germany, remote work is common when the freelancer can communicate clearly and join reviews, but on-site sessions can help when hardware, device testing, or complex visual demos are involved. The key is fast feedback and access to the right test setup.
The right OpenGL experience depends on the task. A small shader fix may need someone focused on rendering basics, while a full pipeline, engine, or migration needs a specialist who understands the whole graphics stack. Ask for past work that matches your exact use case, not just general software experience.
Look for a OpenGL freelancer who can explain rendering issues in plain language and show concrete examples of past graphics work. Strong candidates discuss state changes, driver quirks, shader structure, and how they test across devices. Clean code, clear reasoning, and stable output matter more than flashy demos.
OpenGL can still be a good choice for new software when you want broad support, a mature API, and a practical path for cross-platform graphics. It is especially useful for tools, visual applications, and products that do not need the full complexity of a lower-level API. If your roadmap is long and your rendering needs are demanding, it is worth comparing it with Vulkan early.
The average hourly rate of freelancers in Germany who have used OpenGL in their recent projects is 90 €, which corresponds to a daily rate of about 717 € based on an 8-hour working day.
Of the freelancers in Germany who have used OpenGL in their recent projects, 95% hold at least a Bachelor's degree, 63% hold at least a Master's degree, and 16% hold a doctorate.
On average, freelancers in Germany who have used OpenGL in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 2.8 years.
The most common languages among freelancers in Germany who have used OpenGL in their recent projects are German (100%), English (95%), and French (23%).
The most common industries among freelancers in Germany who have used OpenGL in their recent projects are Information Technology (91%), Manufacturing (68%), and Automotive (64%).
The most common business areas among freelancers in Germany who have used OpenGL in their recent projects are Information Technology (100%), Product Development (86%), and Research and Development (77%).
Main locations of FRATCH Experts, who have recently used OpenGL
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 Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
