Object-Oriented Programming Experts in Berlin
matched in minutes from over 15,000 CVs with the power of AI.Hire experts who design clean class structures, apply inheritance and polymorphism with care, and keep code maintainable across Java, C#, Python, and other OOP stacks. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used Object-Oriented Programming
Oleg Abrazhaev
Last position:
Staff Software Engineer at Kpler Germany GmbH
- Delivered a new notifications platform implementation built from scratch to replace existing and upcoming services
- Collaborating with other teams to integrate more domains
Tech stack:
- Data: Scala 3, Apache Kafka, Python, Airflow, Astronomer
- BE-FE: TypeScript, NestJS, Java, Spring Boot, Vue
- Dev-ops: AWS, PostgreSQL, Docker, GitHub Actions, Kubernetes, Helm, ArgoCD
Diogo Soares
Last position:
Backend Engineer and AI Orchestrator at Stealth Startup
- Providing freelance software engineering and AI orchestration services for an early-stage startup.
- Designing and coordinating autonomous AI systems capable of executing complex, multi- step workflows.
- Developing customer-facing pilots and proof-of-concept solutions.
- Participating in meetings with customers and investors to support product development and business discussions.
Ursula Raab
Last position:
Sabbatical with Training at Own Sabbatical
Basel Jaber
Last position:
Senior Application Engineer / Product Manager at Altran Magnetics LLC
- Oversee development and optimization of key products, including DP contactors, EMI filters, and circuit breakers.
- Lead certification processes ensuring compliance with UL, TÃœV, and VDE standards.
- Act as technical liaison between customers, sales teams, and manufacturing to deliver customized solutions.
Heiko Krain
Last position:
SAP development, Adobe form development at Arvato SE
- conversion of a function-group-based Adobe Interactive Forms framework to an object-oriented Adobe framework for documents in transport/logistics and dunning (FI)
- Adobe Lifecycle Designer 11.0.1 for SAP
- creating new and troubleshooting existing forms, function modules, programs, classes, and methods
- maintaining Smart Forms
- document printing, email sending, and file archiving
- message control for deliveries, orders, invoices, proforma invoices, and transports
- ticket system: Jira
- communication: Microsoft Teams
- migrating customers to a new SAP framework
- handling incident and change request tickets
- software: SAP ERP 6.0, SAP_ABA 7.5G, S4CORE 1.05
André Görst
Last position:
IT Consulting Project Management / Engineering Subproject Management at T-Systems (on assignment for government agencies)
- Projects for federal networks (NdB).
- CR management, EoL change requests, design and documentation according to ITSCM.
- Data center planning.
- Project management and engineering subproject management.
- Software development for virtual server environments according to BSI.
Ines Rahrah
Last position:
Entrepreneur at ZuManAsha
- Built and operated a successful handmade tray business sold via Etsy and Spock, fulfilling 120+ orders and maintaining 5-star customer reviews.
- Managed 100% of the operations including product design, international shipping, and marketing across Instagram, TikTok, and Etsy, growing a global customer base.
Mohamed Yousfi
Last position:
AI Engineer at AlphaFMC
- Architect AI systems across build-vs-buy layers; guide clients on technology selection, evaluation, integration patterns, and governance to reduce risk and time-to-value.
- Implement Azure/Snowflake solutions (RAG pipelines, chatbots, data agents) including ingestion, retrieval, orchestration, and monitoring.
- Partner with stakeholders to translate business needs into deployable AI roadmaps and reference architectures; align with existing data platforms and security controls.
Felix Brunner
Last position:
Project at Machine status detection in industrial 3D printing based on infrared image data
- Guided systematic data collection and pre-processing for the machine learning algorithms
- Defined the labeling process and implemented an interface to annotate the datasets
- Programmed a visual deep learning algorithm to detect machine pollution in live production
- Implemented data augmentation techniques to deal with machine heterogeneity
- Supplied a containerized model with API endpoints for deployment to the production machines
- Coordinated and represented a five-person project team, prepared presentations and reports
Khaled Mohamed
Last position:
Senior/Staff Backend Engineer at Heycar (Mobility Trader GmbH)
- Heycar is a leading automotive platform redefining the used car market through intelligent data pipelines, multi-tenant services, and dealer-focused tooling. I led initiatives across backend architecture, data ingestion, and identity management to enhance scalability, reliability, and developer productivity.
- Ingestion Platform: Designed a unified ingestion platform with YAML-based configuration, enabling new dealer data pipelines to be onboarded without code changes, cutting setup time from ~2 months to 2-3 days and improving scalability by 40%.
- Keycloak Leadership: Acted as the company's Keycloak expert, scaling it for multi-tenant identity management and extending functionality with custom plugins and delegated admin APIs.
- Back-Office Tooling: Developed a back-office application integrated with Salesforce, enabling dealers to manage inventory, convert leads, and handle support requests in real time.
- Multi-Tenant Migration: Collaborated across backend teams to migrate Heycar's core services into a unified multi-tenant cluster, ensuring high availability.
- Frontend CI Optimization: Optimized monorepo delivery by implementing CircleCI dynamic config with NX, deploying only affected UI projects and drastically cutting build times.
- Observability & Mentorship: Enhanced monitoring and release reliability while mentoring backend engineers and improving code review standards.
Jan Helwich
Last position:
Technical Co-Founder at Telemarie UG
- Technical Leadership & SW Architecture: Conducting trade-off analyses for technology stacks and leading the design and implementation of the software architecture, including mobile and backend solutions. Facilitating Event Storming workshops for DDD and software architecture.
- Strategic Direction & Organizational Development: Playing a key role in defining the strategic direction of the product and organization, exploring new models such as steward ownership.
- Lean Startup & Agile Development: Introducing Lean and Agile principles, implementing lean prototypes, and ensuring adherence to Lean Startup processes, iterative development from product/solution fit to product/market fit.
- Team Building & Collaboration: Facilitating workshops, retrospectives and future workshops to collaboratively develop tactics and strategies.
- Technologies: Flutter, JS/TS, React, Google Cloud, Firebase, Android, iOS.
- Organizational Methods: Lean startup, lean canvas, lean agile, event storming, retrospectives.
Gopal Khandelwal
Last position:
SAP ABAP & Cloud Architect at parasus GmbH
- Concept and re-implementation of customer application over cloud and make the source code cloud ready
- Re-designing and putting a new architecture to overcome all the Team Scale findings and push ABAP code to ABAP cloud
- Converted the existing custom application code to ABAP cloud code and used ABAP Clean code guidelines
- Create a dynamic framework to call old vs new implementation from a Table maintenance to validate both implementations
- Utilized Key User Extensibility to seamlessly integrate multiple custom fields into a standard Fiori application, enhancing both the front-end and back-end GUI
Sanju Barla
Last position:
Portfolio for Content Management System (Flask, SQLAlchemy, Bootstrap)
- Created a CMS-driven portfolio app for showcasing projects with user authentication, CRUD operations, and Guest Mode.
- Designed and implemented full-stack architecture using Flask, SQLAlchemy, and Bootstrap 5.
- Integrated secure authentication and CSRF protection mechanisms.
- Deployed production-ready web app using Docker and Railway.
- Achieved full project cycle completion: design, development, testing, deployment, and documentation.
- Demonstrated Agile development principles and industry-standard software engineering practices.
Kalyani Kumar
Last position:
Assistant Vice President at Deutsche Bank
- Technologies: Java, React, Python, Scala, Spring Boot, JPA, microservices, Kubernetes, Docker, OpenShift, Eureka, Prometheus, Grafana, Zookeeper
- Led the design and development of enterprise wide data warehouse platform for efficient and secure data sharing using stateless, event-driven microservices architecture
- Served as component guardian and Scrum master for three microservices, ensuring seamless integration and maintaining high data integrity
- Optimized performance through Prometheus and Grafana, achieving measurable system resilience
Mark Mulder
Last position:
CTO / Co-Founder at Cyclinghero.cc
- Full architecting, development of REST API and frontend using Express JS and NextJS
- Responsible for all deployment and build workflows (AWS + CircleCI)
Discover over 15,000 top freelancers
Statistics of experts using Object-Oriented Programming
Aggregated from the professional profiles of matched freelancers.
Experience
19 years (Germany: 21 years)
Position duration
2.6 years (Germany: 3.1 years)
Positions per freelancer
16 (Germany: 15)
Top business areas
Product Development, Information Technology, Project Management
Top industries
Information Technology, Education, Banking and Finance
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
94% (Germany: 91%)
Master's degree or higher
65% (Germany: 63%)
Doctorate
18% (Germany: 10%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
English, German, French
Speak two or more languages
95% (Germany: 97%)
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 Berlin 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 Berlin 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Core idea
Object-Oriented Programming, often called OOP, structures software around objects that hold data and behavior together. Teams use it to build business systems, web back ends, desktop tools, and large codebases that need clear responsibilities and easier maintenance.
Common stacks
- Java and Spring applications with layered domain models
- C# and .NET systems for internal and customer-facing tools
- Python, PHP, and Ruby codebases that rely on classes and interfaces
- Refactors of older procedural code into clearer object models
- Design pattern work for reusable, testable components
What experts bring
Strong OOP experts know when to model with classes and when to keep things simple. They use encapsulation, inheritance, and polymorphism with restraint, and they spot where composition is a better fit than deep class trees.
When to bring one in
Companies usually bring in freelance specialists when an existing codebase feels hard to change, when a new module must fit a strict architecture, or when teams need help reviewing design choices. In Berlin, this often comes up in product teams, agency work, and enterprise software projects that mix local and remote collaboration.
Signals of quality
Good professionals leave code that is easy to read, test, and extend. They write classes with clear boundaries, avoid hidden side effects, and explain trade-offs in plain language so teams can keep moving after the assignment ends.
Related skills
OOP work often goes with UML, design patterns, unit testing, refactoring, and API design. Depending on the stack, specialists may also need Spring, .NET, Django, or PHP frameworks to turn object models into stable delivery.
Frequently asked questions
Key details about Object-Oriented Programming, drawn from the questions we get asked most.
Object-Oriented Programming is used to build software around objects that combine state and behavior. That makes it a strong fit for business systems, product back ends, workflow tools, and other codebases that need structure over time. Teams often choose it when they expect the software to grow and change.
OOP focuses on modeling a system with objects, while functional programming focuses more on functions, immutability, and data flow. Neither is automatically better. The right choice depends on the problem, the team’s skills, and the language or framework already in use.
Object-Oriented Programming is common in Java, C#, Python, PHP, Ruby, and many JavaScript codebases that use class-based patterns. In practice, specialists often work inside a specific ecosystem such as Spring, .NET, or Django. The important skill is not the syntax alone, but how well the model fits the system.
A strong OOP freelancer should be able to explain class structure, boundaries, and dependencies without hiding behind jargon. They should improve readability, reduce duplication, and make the code easier to test. Good specialists also know when not to add another layer of abstraction.
Object-Oriented Programming work goes best when the scope is clear: existing code, target language, framework, and the kind of change needed. A specialist can still help early, but they need enough context to judge the design. Even a rough architecture sketch or a few representative files can be enough to start.
Yes. Many OOP specialists work remotely with Berlin teams, especially on code review, refactoring, architecture support, and feature delivery. On-site time can still help during workshops, legacy system discovery, or when several teams need to align on design choices.
A good Object-Oriented Programming specialist usually brings testing, refactoring, API design, and design patterns. Depending on the stack, database knowledge and framework experience can matter just as much. For larger systems, clear communication with product and backend teams is also important.
Look for evidence of maintainable class design, practical use of inheritance or composition, and code that is easy to test. A good OOP profile often mentions specific systems, refactors, architecture decisions, or performance trade-offs. Samples that show clean boundaries are more useful than vague claims about expertise.
The average hourly rate of freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects is 77 €, which corresponds to a daily rate of about 616 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects, 94% hold at least a Bachelor's degree, 65% hold at least a Master's degree, and 18% hold a doctorate.
On average, freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 2.6 years.
The most common languages among freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects are English (100%), German (95%), and French (26%).
The most common industries among freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (89%), Education (42%), and Banking and Finance (42%).
The most common business areas among freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects are Product Development (100%), Information Technology (95%), and Project Management (53%).
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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Philipp Thomaschewski
FRATCH CEO
