Object-Oriented Programming Experts in Frankfurt
to build maintainable software with fast, precise AI matchingHire experts who design clear class structures, refactor complex codebases and deliver reliable applications with Java, C++, C#, Python or Ruby. FRATCH connects you with vetted, available freelancers through fast, precise AI matching.
Meet FRATCH Experts in Frankfurt, who have recently used Object-Oriented Programming
Bardiya B.
Last position:
Data Scientist at Rewe Digital GmbH
Statistical Forecasting Algorithm
- Improvement of an statistical probabilistic forecasting algorithm for sales + evaluation
- Migration from R/On-premise to Python/Snowflake
- Productionalization on Snowflake in cooperation with data engineers & DevOps
Monitoring Dashboard
- Data engineering for preparation & provisioning of necessary data/resources on Snowflake
- Development & deployment of a Streamlit dashboard in Snowflake
ML-based Probabilistic Forecasting on Vertex AI
- Development of a ML-based probabilistic forecasting algorithm from scratch
- Implementation of MLOps pipeline in Kubeflow on Google Cloud Vertex AI
Tech Stack: Python, Snowflake/Snowpark, R, Streamlit, Gitlab/Gitlab CICD, Terraform, Google Cloud, Vertex AI (aiplatform SDK, gcloud CLI, feature store, model registry, etc), kubeflow
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.
Dominic B.
Last position:
Freelance Engineer at Bilke Web- und Softwareentwicklung
- Web and software development
- Project work
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
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
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
20 years (Germany: 22 years)
Position duration
2.5 years (Germany: 3.2 years)
Positions per freelancer
14 (Germany: 15)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Business Intelligence, Product Development
Bachelor's degree or higher
100% (Germany: 89%)
Master's degree or higher
83% (Germany: 61%)
Doctorate
17% (Germany: 8%)
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 95%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Frankfurt are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging 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 29 Oct 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 (57%)
- Automotive (43%)
- Professional Services (43%)
- Retail (43%)
- Healthcare (36%)
- Government and Administration (36%)
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. Experts use classes, interfaces, inheritance and composition to model business domains and keep responsibilities clear. The approach supports applications that need to evolve without making every change risky.
Where it fits
OOP is used across backend services, desktop software, mobile applications, embedded systems and enterprise platforms. It suits systems with rich business rules, reusable components and long maintenance cycles.
- Domain-driven business applications
- APIs and distributed services
- Desktop and mobile products
- Embedded and real-time software
Languages and tooling
Object-oriented work appears in Java, C++, C#, Python, Ruby, Kotlin and Swift, although each language applies the model differently. Strong specialists work with build tools, package managers, testing frameworks, debuggers, version control and continuous integration. They also understand design patterns, SOLID principles and clean code practices.
When to bring expertise
Companies often need freelance expertise when a legacy codebase has become difficult to change, a new product needs a stable domain model, or an internal team needs support during a demanding delivery phase. In Frankfurt, specialists may collaborate with local product, finance, automotive or industrial teams on-site, remotely or in a hybrid setup.
- Untangle tightly coupled classes
- Define interfaces between services
- Refactor without breaking behaviour
- Establish tests around critical logic
What strong specialists deliver
The best professionals connect technical design with the real business problem. They choose composition over unnecessary inheritance, make dependencies visible and explain trade-offs in language the wider team can use. Their deliverables may include an object model, production code, automated tests, refactoring plans and documentation that remains useful after handover.
Assessing project fit
Start with the system’s language, runtime, architecture and current pain points. Ask candidates to explain a comparable refactoring decision, show how they would test a changing domain rule and describe how they protect public interfaces. Clear communication matters as much as elegant class design, especially when remote collaboration spans German- and English-speaking teams.
Frequently asked questions
Questions about Object-Oriented Programming? Start with the answers below.
Object-Oriented Programming is used to structure software around objects, classes and clear responsibilities. It is common in enterprise applications, APIs, desktop products, mobile software, embedded systems and systems with complex business rules.
OOP organizes behaviour around objects and their relationships, while functional programming emphasizes immutable data and composable functions. Many modern systems combine both approaches, so the right choice depends on the domain, language and team’s ability to maintain the design.
A strong Object-Oriented Programming specialist may work with Java, C++, C#, Python, Ruby, Kotlin or Swift. The more important factor is depth in the project’s language, runtime, testing tools and architectural conventions.
Professionals working with OOP often bring knowledge of software architecture, design patterns, SOLID principles, automated testing, refactoring and version control. Depending on the project, they may also cover APIs, databases, cloud services, DevOps workflows or user interface frameworks.
The right level for Object-Oriented Programming depends on the codebase and the risk of the change. A contained feature may need focused implementation skills, while a legacy migration or domain redesign calls for someone who can assess dependencies, plan incremental refactoring and guide technical decisions.
Object-Oriented Programming work is well suited to remote collaboration through repositories, issue tracking, code review and video sessions. Frankfurt teams should agree early on working hours, documentation standards and whether German or English is the main language for technical decisions.
Ask how the OOP specialist would model a changing business rule, isolate dependencies and test the result. Good answers explain trade-offs rather than reciting patterns, and they show awareness of maintainability, performance, backward compatibility and team communication.
Object-Oriented Programming may be a poor fit for small scripts, data transformation pipelines or systems where pure functions and immutable state make the logic clearer. A capable specialist will compare the available approaches instead of forcing classes, inheritance or patterns into every problem.
The average hourly rate of freelancers in Frankfurt, Germany who have used Object-Oriented Programming in their recent projects is 93 €, which corresponds to a daily rate of about 740 € 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, 83% hold at least a Master's degree, and 17% hold a doctorate.
On average, freelancers in Frankfurt, Germany who have used Object-Oriented Programming in their recent projects have 20 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 French (21%).
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 (57%).
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 
Dortmund 
Nuremberg Request a free demo
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