Object-Oriented Programming Experts in Dortmund
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Meet FRATCH Experts in Dortmund, who have recently used Object-Oriented Programming
Yasin Y.
Last position:
Enterprise Architect at Bundesagentur für Arbeit
Task:
- Design and build a proof of concept (PoC) for a future-proof virtualization platform, taking secure system architectures into account
- Assess the current state of existing infrastructures and develop selection and evaluation criteria for the right OS virtualization platform
- Carry out the requirements analysis and then create and prioritize tickets in the ticket system
- Complete and continuously update a tool evaluation matrix based on PoC results
- Support team knowledge building through clear documentation of the approach and results in Confluence
- Enterprise analysis of existing hardware (creating different BoMs)
Technologies: Vmware, Vmware Aria Operations, Osism, Canonical OpenStack, FishOs, Linux, Terraform, Ansible, Confluence, Alma
Diego E.
Last position:
RPG Software Developer from RPG III to Free Format
- Development of software and system support for RPG development.
- Development, optimization and maintenance of programs in RPG (RPG II to ILE Free Format).
- Performing integration tasks, data management as well as applying and managing system updates.
- User support and training to ensure smooth system operation.
Patrik G.
Last position:
Technical Lead Conversational AI at CANCOM
- Technical lead of a team developing agentic chatbot solutions (React, TypeScript, Python, FastAPI)
- Architecture design for multi-LLM dialog systems - focus on maintainability, UX, and autonomous execution
- Stakeholder alignment, CI/CD processes, and AI integration at enterprise level
Hamza S.
Last position:
Software Developer at WaslSign
- Designed and implemented the system architecture for scalable document workflows, improving stability and performance.
- Optimized the login flow with TOTP-based MFA, reducing complexity and login time by 35%.
- Built secure backend APIs for document upload, signing, and management.
- Developed encrypted file handling with AWS S3 pre-signed URLs, ensuring GDPR-compliant data protection.
- Implemented JWT-based role authentication, strengthening access control and overall platform security and reducing code and database complexity.
- Optimized database queries and caching using ORM, reducing API response time by 40%.
- Integrated real-time webhook updates, enhancing workflow transparency and user experience.
Yoav N.
Last position:
Freelance Software Architect at Freelance Consultant
- Various small consultations, e.g. concepts and arcitectures.
- Updating my Matlab, Linux, IPv6, Cyber-Security, C++ (up to 23) and Python skills.
Andreas N.
Last position:
Freelancer at Freelance Work
Ilja L.
Last position:
Software Engineer/Architect (Tech Lead) at Mercedes-Benz Tech Innovation GmbH
- Implementation of various interfaces for subsystems and connection to external devices (cameras, scanners, digital lockers)
- Development of various interfaces in the used cars area
- Realization of various prototypes
- Support in UI/UX and data analytics
- Development of frontend and backend solutions
- Kubernetes migration
- Building CI/CD pipelines
- Communication with the business unit and technical design of new solutions
- Cross-team alignment and coordination within the team
- Overview of the entire technology stack and related systems
- Documentation, preparation, and conducting of reviews
- Supporting the team and coordinating releases and key milestones
Christian F.
Last position:
Deutsche Post DHL Group
- Leadership development training
- ITIL
- Prince2
Discover over 15,000 top freelancers
Statistics of experts using Object-Oriented Programming
Aggregated from the professional profiles of matched freelancers.
Experience
23 years (Germany: 22 years)
Position duration
2.5 years (Germany: 3.2 years)
Positions per freelancer
12 (Germany: 15)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Healthcare
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
71% (Germany: 89%)
Master's degree or higher
29% (Germany: 59%)
Certifications per freelancer
4 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 95%)
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Dortmund 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 Dortmund using Object-Oriented Programming
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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Object-Oriented Programming 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 (100%)
- Banking and Finance (50%)
- Healthcare (50%)
- Telecommunication (50%)
- Transportation (38%)
- Retail (38%)
- Aerospace and Defense (25%)
- Automotive (25%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core principle
Object-Oriented Programming, often called OOP, structures software around objects that combine state and behavior. Classes define reusable models, while encapsulation protects internal logic and inheritance or composition supports extension. The approach helps teams represent business concepts clearly and manage change in large codebases.
What it builds
OOP is used for backend services, desktop applications, mobile software, games, embedded systems and enterprise platforms. It fits systems with evolving rules, multiple user roles and long product lifecycles. Common deliverables include domain models, application services, APIs, user interfaces and automated tests.
- Design classes, interfaces and domain models
- Refactor tightly coupled legacy code
- Build reusable components and service layers
- Define contracts between modules
Languages and tooling
Professionals apply OOP in Java, C#, C++, Python, Ruby, Swift and TypeScript, with each language shaping the approach differently. They may work with Spring, .NET, Qt, Django, Rails or game engines, alongside Git, build tools, package managers, debuggers and testing frameworks. Strong practice includes UML where useful, dependency injection and clean API boundaries.
When expertise helps
Companies bring in freelance specialists when a growing codebase becomes difficult to change, a new product needs a reliable domain structure or a migration must preserve existing behavior. Dortmund companies across industrial, logistics, software and service environments can use remote or on-site collaboration depending on security, team routines and delivery needs.
- New modules take too long to integrate
- Business rules are duplicated across the system
- Tests are hard to write or maintain
- A platform needs modernization without a full rewrite
Quality signals
Strong professionals choose composition over inheritance when it reduces coupling and keep classes focused on one responsibility. They can explain trade-offs between object-oriented design, functional techniques and simpler procedural code. Look for clear naming, small interfaces, useful tests, thoughtful error handling and evidence of safe refactoring in a real codebase.
Working together
A freelance specialist should begin by mapping the domain, constraints, interfaces and delivery risks before changing core structures. Effective collaboration includes design reviews, readable documentation, incremental pull requests and tests that protect important behavior. For remote teams in Dortmund, clear written communication and overlapping working hours matter as much as hands-on coding ability.
Frequently asked questions
Need clarity? These are the questions we hear most often about Object-Oriented Programming.
Object-Oriented Programming is used to structure software around objects that hold data and the operations that work on it. It is common in enterprise applications, web services, desktop software, mobile apps, games and embedded systems.
OOP organizes behavior around objects, while functional programming emphasizes transformations and immutable data, and procedural programming focuses on ordered routines. The best choice depends on the domain, language, team skills and need for state management; many production systems combine these approaches.
An OOP specialist may work with Java, C#, C++, Python, Ruby, Swift or TypeScript. Relevant ecosystems include Spring, .NET, Qt, Django, Rails and game development frameworks, plus testing, build and version-control tools.
A strong Object-Oriented Programming freelancer should understand software architecture, design patterns, automated testing, databases, APIs and version control. Experience with refactoring, dependency injection, code review and continuous integration is also valuable.
The right OOP experience depends on the work rather than a fixed number of years. A small feature may need sound language knowledge and testing practice, while a legacy migration or domain redesign calls for someone who can assess dependencies, manage risk and guide architectural decisions.
OOP work is well suited to remote collaboration when repositories, environments and requirements are accessible. Teams in Dortmund should agree on communication routines, review practices, documentation standards and any need for occasional on-site workshops.
Ask an OOP professional to explain a real design decision, including alternatives and consequences. Review how they separate responsibilities, control dependencies, test behavior and improve existing code without introducing unnecessary complexity.
Object-Oriented Programming may add needless structure to a small script, a data transformation pipeline or a problem that is naturally expressed as pure functions. A capable specialist should be willing to use a simpler procedural or functional design when it improves clarity and reduces maintenance.
The average hourly rate of freelancers in Dortmund, Germany who have used Object-Oriented Programming in their recent projects is 85 €, which corresponds to a daily rate of about 677 € based on an 8-hour working day.
Of the freelancers in Dortmund, Germany who have used Object-Oriented Programming in their recent projects, 71% hold at least a Bachelor's degree and 29% hold at least a Master's degree.
On average, freelancers in Dortmund, Germany who have used Object-Oriented Programming in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 2.5 years.
The most common languages among freelancers in Dortmund, Germany who have used Object-Oriented Programming in their recent projects are German (100%), English (100%), and Spanish (13%).
The most common industries among freelancers in Dortmund, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (100%), Banking and Finance (50%), and Healthcare (50%).
The most common business areas among freelancers in Dortmund, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (100%), Product Development (88%), and Project Management (63%).
Main locations of FRATCH Experts, who have recently used Object-Oriented Programming
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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Munich 
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Frankfurt 
Stuttgart 
Dusseldorf Countries:
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