Object-Oriented Programming Experts in Frankfurt
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Meet FRATCH Experts in Frankfurt, who have recently used Object-Oriented Programming
Muhammad U.
Last position:
Software Engineer at Absolutely Digital
Carlbandro E.
Last position:
IT Lecturer / Coach at Freelance
As a freelance IT lecturer and IT coach, I specialize in teaching individuals concepts like Cloud Computing, Business Intelligence, Python Programming and Agile Frameworks. My goal is to simplify complex technical concepts into practical, actionable knowledge. Through my extensive experience as an IT consultant in various sectors and roles I know about the importance of IT training - for companies and employees alike.
Johannes E.
Last position:
Freelance Software Consultant at S|R Software GmbH & Co. KG
- Provided consulting for modernizing legacy applications
- Delivered critical features under tight deadlines for backend and frontend
- Technologies: C#, .NET, WPF, WCF, REST, Angular, MS SQL Server
Dimitrij N.
Last position:
Logistics Designer / Network Designer at Deutsche Bahn Cargo
- Requirements analysis, design, and development of a product for freight logistics (dispatching, planning, timetable and network optimization)
- Documentation of technical focus areas and support with acceptance and integration testing
- DBMS-agnostic modeling and mathematical algorithms for optimization with solver integration (Gurobi, Cplex, Coin-OR)
- Implementation of service layer, automated testing, and integration with third-party systems
Ulm P.
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.
Suneel D.
Last position:
SAP Consultant & Developer at KS KeySolutions GmbH
- ABAP developments for rku.it GmbH, Agena GmbH, Koenig & Bauer AG, Salzgitter AG, duagon AG
- Redesigned material configuration data mass maintenance Fiori app for Siemens AG Engineering to resolve system resource issues
- Conducted S4Hana ABAP code remediation, ATC checks, and implemented ABAP parallel processing for Voestalpine AG
Peter V.
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
Erhan Y.
Last position:
Commerzbank
- Newly developed an ASP.NET web application for mortgage financing
- Maintained and enhanced it both functionally and technically (expanded to other loan types, connected to various services, developed custom web services)
- Analyzed business requirements in close cooperation with business units
- Created IT concepts and technical documentation
- Developed backend and frontend
- Designed and implemented automated build, deployment, and testing processes
- Created scripts to automatically generate data access layers (C# classes and SQL scripts) and integrated them into build and deployment processes
- Languages: C#, PowerShell, JavaScript
- Technologies: ASP.NET, Windows Forms, XML Web Services, Windows Services, MS SQL Server, Entity Framework, unit testing, automated build, deployment, and testing processes
- Tools: Visual Studio 2005–2015, Team Foundation Server, DevExpress, Rational ClearCase, Rational ClearQuest, CruiseControl.net
Michael Y.
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
Kevin M.
Last position:
Freelance Lecturer in Coaching at DSI Education GmbH
- Practice-oriented coaching on core aspects of data science
- Teaching advanced concepts in Python as well as automation (with Make and n8n) and ETL processes with Apache Airflow
- Weekly preparation and delivery of practice-oriented programming courses using real-world examples
- Promoting practical programming skills among participants through interactive exercises and individual support
- Developing didactic materials and adapting content to participants' skill levels
- Close collaboration with the team for continuous improvement of course quality and learning outcomes
Rashid I.
Last position:
Java Developer at IT company
- Data transformations
- IT company with more than 100 employees
- Software production
- Data augmentation and normalization, image transformation, format conversion, merging data from multiple sources
- Toolset: Java, Helm, Kubernetes, Kafka, OpenCV, IntelliJ IDEA, Gradle, Git, Docker, Containers, Scrum
Jörg-Ulrich H.
Last position:
Data flows for health insurance providers
- Further development and creation of data flows for health insurance providers
- Data management across various storage systems (DB2, MSSQL, PostgreSQL, S3, custom APIs, ...)
- Documentation and training
- Planning and deployment of NiFi 2.x (major upgrade)
- Integrating Grafana for visualization, monitoring, and alerting
- Extensive use of the NiFi API to continuously monitor the system and its components
Dominic B.
Last position:
Freelance Engineer at Bilke Web and Software Development
- Web and software development
- Project work
Gulam N.
Last position:
Full-Stack Developer at .Attendo
Developed Skalman’s Food & Sleep Clock web app with a digital assistant that reminds users about medication intake, meals, movement breaks, and other daily routines.
Implemented personalized meal suggestions and simple recipes with support for allergies and special diets, integrating AI to generate tailored meal ideas.
Built Flight Booking App using React and Axios for the front end, Spring Boot with JPA and MySQL for the back end, and implemented user authentication, form validation, and booking logic.
Designed and built a chatbot that accepts natural language queries and generates intelligent responses using OpenAI’s language model.
Developed MarketPlace_AP with React and Axios on the front end, Spring Boot with JPA and MySQL on the back end, enabling users to discover services or products, with authentication and form validation.
Created a Meeting Calendar page allowing users to schedule, view, and manage meetings using React, Axios, Spring Boot, JPA, MySQL, and authentication with validation.
Created a Todo List Manager: built a REST API with Node.js, Express, and MongoDB; developed a React front end featuring status toggling and filtering; deployed on Heroku and integrated with GitHub for CI/CD.
Discover over 15,000 top freelancers
Statistics of experts using Object-Oriented Programming
Aggregated from the professional profiles of matched freelancers.
Experience
21 years (Germany: 22 years)
Position duration
2.5 years (Germany: 3.2 years)
Positions per freelancer
17 (Germany: 15)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
100% (Germany: 89%)
Master's degree or higher
75% (Germany: 59%)
Doctorate
8%
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Russian
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 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 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 (64%)
- Transportation (64%)
- Automotive (50%)
- Healthcare (43%)
- Professional Services (43%)
- Government and Administration (43%)
- Retail (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core principle
Object-Oriented Programming, often called OOP, organizes software around objects that combine data with the operations that use it. Classes define shared structure and behavior, while encapsulation limits direct access to internal state. Inheritance and polymorphism can support reuse, variation and clearer boundaries when applied with care.
What it builds
OOP is used for business applications, desktop software, APIs, games, embedded systems and large back-end services. It fits products with rich domain rules, long lifecycles or many interacting entities. Common deliverables include:
- Domain models and service layers
- Reusable libraries and application components
- REST APIs and event-driven services
- User interfaces with stateful behavior
Languages and tooling
OOP is a central style in Java, C#, C++, Python, Ruby, Kotlin and Swift, although each language handles types, inheritance and interfaces differently. Strong specialists work with frameworks such as Spring, .NET, Django or Rails, and use package managers, build tools, IDEs and version control. Testing commonly includes unit, integration and contract tests.
When expertise helps
Companies bring in freelance OOP specialists when a codebase is difficult to change, a product needs a consistent domain model or a team is introducing a new language. They can also help when object boundaries are unclear or duplicated logic slows delivery. Useful signs include:
- Frequent regressions after small changes
- Classes with too many responsibilities
- Tight coupling between business rules and infrastructure
- A legacy system that needs staged modernization
Quality signals
Effective professionals do more than apply design patterns. They choose simple abstractions, keep responsibilities focused and make dependencies visible. Look for experience with SOLID principles, composition over inheritance, refactoring, automated testing and clear technical documentation. Their code should remain understandable as requirements change.
Frankfurt collaboration
For teams in Frankfurt, OOP expertise can support finance, logistics, manufacturing and enterprise software that must integrate with established systems. Remote work is practical when repositories, design decisions and review standards are well documented; on-site workshops can help with domain discovery and legacy analysis. German or English communication should match the project team and stakeholders.
Frequently asked questions
Questions about Object-Oriented Programming? Start with the answers below.
Object-Oriented Programming is used to structure software around objects that hold data and behavior together. Companies apply OOP to business systems, APIs, desktop products, games, embedded software and services with complex domain rules.
OOP models behavior through objects, classes and changing state, while functional programming emphasizes functions, immutable data and transformation pipelines. Many production systems combine both styles, so the right choice depends on domain complexity, language features and the team's ability to maintain the design.
Object-Oriented Programming is prominent in Java, C#, C++, Python, Ruby, Kotlin and Swift. The surrounding ecosystem may include Spring, .NET, Django or Rails, so language-specific framework knowledge is often as important as understanding classes and inheritance.
OOP work benefits from software architecture, database design, API design, automated testing and version control. Experience with refactoring, SOLID principles, composition and continuous integration helps a specialist improve an existing codebase rather than only add new features.
Object-Oriented Programming experience should match the system's risk and complexity, not a fixed number of years. A smaller application may need strong implementation and testing skills, while a legacy modernization effort calls for proven work with dependencies, domain modeling, migrations and incremental refactoring.
OOP projects can usually be delivered remotely when code, architecture decisions and review practices are documented. Frankfurt teams should agree on collaboration hours, communication language and access to legacy systems; on-site sessions can still be useful for workshops and stakeholder interviews.
Object-Oriented Programming quality is visible in focused classes, clear interfaces, low coupling and tests that protect important behavior. Ask a specialist to explain trade-offs in a code sample or past project, including why composition, inheritance or a particular design pattern was chosen.
OOP may add unnecessary structure to small scripts, simple data transformations or systems dominated by immutable processing. A specialist should be able to recommend procedural or functional techniques where they reduce complexity, and use object-oriented design only where it improves clarity and changeability.
The average hourly rate of freelancers in Frankfurt, Germany who have used Object-Oriented Programming in their recent projects is 88 €, which corresponds to a daily rate of about 704 € based on an 8-hour working day.
Of the freelancers in Frankfurt, 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 8% hold a doctorate.
On average, freelancers in Frankfurt, Germany who have used Object-Oriented Programming in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2.5 years.
The most common languages among freelancers in Frankfurt, Germany who have used Object-Oriented Programming in their recent projects are German (100%), English (100%), and Russian (29%).
The most common industries among freelancers in Frankfurt, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (100%), Banking and Finance (64%), and Transportation (64%).
The most common business areas among freelancers in Frankfurt, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (100%), Product Development (100%), and Business Intelligence (64%).
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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Stuttgart 
Dusseldorf 
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