Object-Oriented Programming Experts in Düsseldorf
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Meet FRATCH Experts in Düsseldorf, who have recently used Object-Oriented Programming
Olaf R.
Last position:
DevOps Architect / Consultant at Authority with increased security requirements
- Identification of requirements (legal, organizational, and technical)
- Design of solution architectures
- Evaluation of concepts and technologies
- Preparation of decision templates
- Architectural Decision Records (ADR)
- Coordination of implementation
- Review of implementations
- Documentation
Andreas G.
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT Service Provider
- Supporting several agile teams in the new product development of an enterprise CRM and ERP application
- Web frontend development with Angular 17–21 (microfrontends, Domain-Driven Design, MDB-Bootstrap)
- Backend development with C# and .NET 7–10, MongoDB, MassTransit, RabbitMQ, Entity Framework Core, ElasticSearch (microservices, DDD)
- Technical feature design for assigned tasks
- Technical architecture design including forward-looking planning of AI-supported extension options
- Proof-of-concept implementation of AI-supported workflows with n8n and a locally hosted LLM (Ollama)
- Coordination with stakeholders and Product Owners, support with sprint planning
Result: Delivery of production-ready microservices and frontend modules in agile sprint cycles.
Environment: .NET 7–10 · Angular 17–21 · C# · TypeScript · OpenAPI · Microfrontends · DDD · Kubernetes · Docker · Helm · MS SQL Server · PostgreSQL · MongoDB · MassTransit · RabbitMQ · EF Core · ElasticSearch · Kibana · Azure DevOps · KeyCloak · n8n · Ollama
Harshal L.
Last position:
SAP EWM Developer at Körber Supply Chain GmbH
- Experience in SAP EWM processes and ABAP development
- Configured PPF for output management in EWM and YM, worked with BOPF in TM and YM, configured Fiori Launchpad with roles, spaces, and pages, and developed UI5 applications
- Developed a Fiori Elements app using the List Report, Object Page, Overview Page, and Analytical List Page frameworks with CDS views, AMDP on BAS, created a RAP app, and a report for data transfer to external Oracle systems
Esmail S.
Last position:
Senior Load and Performance Tester at Deutsche Bahn (DB-Netz)
- Design, development, and execution of load and performance tests for the PRISMA project
- Use of Apache Jmeter, Gatling, Apache ActiveMQ, Jms/Tibco Ems, SikuliX, Jython, Amazon AWS, PAN-Client
- Methods: load tests, test automation
Jürgen V.
Last position:
Instructor / Trainer at SAP Training Company
- Instructor / Trainer
- SAP applications in SAP S/4 HANA - Sales, Sourcing Procurement, Logistic Execution, SAP Foundation
- SAP S/4 HANA - Fiori UX and Fiori Launchpad
- Cross-module MM application - Sourcing & Procurement
- Business processes SAP S/4 HANA Procurement
- Purchasing processes SAP S/4 HANA MM
- Incoming processes SAP S/4 HANA MM
- Supplier invoicing SAP S/4 HANA MM
- Pricing & plant determination SAP S/4 HANA MM
- Automation in SAP S/4 HANA MM
- Business processes SAP S/4 HANA Pre & After Sales
- Sales processes SAP S/4 HANA Sales
- Delivery processes SAP S/4 HANA Sales
- Billing SAP S/4 HANA Sales
- Pricing SAP S/4 HANA Sales and Storage Rooms and Lean-EWM
- Automation in SAP S/4 HANA Sales
- SAP S/4 HANA – SAP Private Cloud – Release 2023
Yan O.
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
Daniel M.
- SaaS including subscription management and mobile app
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
1.2 years (Germany: 3.2 years)
Positions per freelancer
20 (Germany: 15)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Transportation, Manufacturing
Certification focus areas
Information Technology, Business Intelligence, Operations
Bachelor's degree or higher
100% (Germany: 89%)
Master's degree or higher
75% (Germany: 59%)
Doctorate
25% (Germany: 8%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
German, English, Hindi
Speak two or more languages
86% (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 Düsseldorf 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 Düsseldorf 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%)
- Transportation (71%)
- Manufacturing (57%)
- Media and Entertainment (57%)
- Professional Services (57%)
- Government and Administration (57%)
- Retail (57%)
- Telecommunication (57%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core concept
Object-Oriented Programming, often called OOP, structures software around objects that combine data with the operations that work on it. Classes define shared behavior, while encapsulation protects internal state and inheritance or composition supports reuse. The approach helps teams model complex business domains in understandable code.
What it builds
OOP is used for long-lived applications where clear boundaries and changing requirements matter. Typical deliverables include:
- Business applications and enterprise platforms
- APIs, backend services and desktop software
- Mobile applications and embedded systems
- Domain models, libraries and reusable components
Languages and tooling
Professionals commonly apply object-oriented design in Java, C#, C++, Python, Kotlin, Swift and TypeScript. They work with frameworks such as Spring, .NET, Django and Qt, supported by Git, automated testing, continuous integration and code-quality tools. UML and design patterns can help communicate structure before implementation.
When to bring in experts
Companies often seek freelance expertise when a legacy codebase is difficult to change, a new product needs a durable architecture, or internal teams need support with a demanding release. In Düsseldorf, specialists may collaborate remotely or on site with product, engineering and business teams. Clear English is common; German can help in local stakeholder work.
Strong professional skills
A capable OOP specialist does more than create classes. They choose composition over unnecessary inheritance, define useful interfaces and keep responsibilities focused. They understand domain modeling, SOLID principles, refactoring, dependency management, concurrency and testing, then explain trade-offs in language the wider team can use.
Evaluating project fit
Look for evidence of relevant systems, not only a list of languages. Ask how the professional handled coupling, changing requirements, performance constraints and technical debt. A strong specialist can review an existing design, propose incremental improvements and leave behind tested code, practical documentation and conventions the team can maintain.
Frequently asked questions
Everything clients usually want to know about Object-Oriented Programming, in one place.
Object-Oriented Programming is used to structure applications as interacting objects with defined data and behavior. It is common in enterprise software, APIs, desktop applications, mobile products, games and embedded systems where maintainability and reuse are important.
OOP organizes behavior around objects and their responsibilities, while functional programming emphasizes pure functions and immutable data. Many modern systems combine both approaches, so the right choice depends on domain complexity, team skills, language features and operational needs.
A strong object-oriented design specialist should also understand databases, API design, version control, automated testing and deployment practices. Experience with architecture, refactoring, concurrency and security is valuable when the work involves a mature or business-critical codebase.
The need depends on the system’s age, complexity and consequences of failure. A focused feature may suit a professional who can work within an established design, while a platform redesign or legacy modernization calls for deep Object-Oriented Programming and architecture experience.
Yes. OOP work is well suited to remote collaboration through shared repositories, code reviews, issue tracking and video sessions. On-site workshops can still help with domain discovery, architecture decisions and alignment with German-speaking stakeholders.
Ask the professional to explain a design decision, identify coupling risks and describe how tests protect behavior during change. Strong OOP specialists discuss trade-offs clearly and can show how they use composition, interfaces, focused responsibilities and incremental refactoring.
Object-Oriented Programming uses classes in many languages, but classes alone do not create good object-oriented design. Quality depends on meaningful responsibilities, controlled dependencies, clear interfaces and collaboration between components that reflects the problem domain.
OOP is strongly associated with Java, C#, C++ and Smalltalk, while Python, Kotlin, Swift and TypeScript also support object-oriented techniques. A suitable freelancer should match the language, framework and runtime constraints of the project rather than apply one pattern everywhere.
The average hourly rate of freelancers in Dusseldorf, Germany who have used Object-Oriented Programming in their recent projects is 93 €, which corresponds to a daily rate of about 745 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used Object-Oriented Programming in their recent projects, 100% hold at least a Bachelor's degree, 75% hold at least a Master's degree, and 25% hold a doctorate.
On average, freelancers in Dusseldorf, Germany who have used Object-Oriented Programming in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 1.2 years.
The most common languages among freelancers in Dusseldorf, Germany who have used Object-Oriented Programming in their recent projects are German (100%), English (86%), and Hindi (14%).
The most common industries among freelancers in Dusseldorf, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (100%), Transportation (71%), and Manufacturing (57%).
The most common business areas among freelancers in Dusseldorf, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (100%), Product Development (86%), and Project Management (57%).
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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