Object-Oriented Programming Experts in Berlin
matched in minutes from over 15,000 CVsHire experts who design maintainable class hierarchies, build reliable applications in Java, C++, C# or Python, and modernize complex codebases. FRATCH precisely matches you with vetted, available freelance professionals for your project.
Meet FRATCH Experts in Berlin, who have recently used Object-Oriented Programming
Christian P.
Last position:
Project Manager at Kreis Segeberg
- WiNOWiG enhancements (digitalization & organization)
- Project management for the WiNOWiG project (regulatory offenses)
- Process optimization and coordination
Mladen B.
Last position:
Senior SAP BW/4HANA / BPC / SAC Consultant – Freelancer at Company in Berlin and Belgium in the utilities sector
- Implementation of data models in BW/4HANA, ABAP CDS Views, HANA Calculation Views, AMDP Scripts, OData Services, object-oriented ABAP in BW, SAC.
- Adjustments in BPC for BW/4HANA.
Rüdiger S.
Last position:
Full-Stack Software Engineer / Consultant for Digitalization at ARTEVENT
Designed, built, and launched an internal event planning web application used by over 100 department leads for a large event, despite having no dedicated testing phase.
Ensured smooth, failure-free operation during first production use, leading to the tool being adopted for future events.
Automated catering calculations and related workflows, significantly reducing email communication and manual computation effort for meal planning.
Managed deployment and hosting on a Linux server using Coolify, including application setup and runtime operations.
Hired and guided a communication designer on UX while independently owning all technical decisions and implementation.
Fernando C.
Last position:
Senior Front-End Developer at Moss
- Moss is a spend-management platform for SMEs that bundles corporate cards, web-based applications and reimbursements, AP/procurement and advanced accounting in one place.
- Splits time across Accounting, Spending and Growth tribes, handling requirements gathering, public product design, coding, testing, debugging and internal apps.
- Participates in development and maintenance of the design system/UI kit and supports tooling, documentation and developer experience.
- Builds form-heavy UIs, drawer-based editing, high-density/resilient tables with server-side filters, pagination, column configurations, CSV/Excel export and bulk operations, all wired for permissions and auditability.
- Works with complex cross-entity relationships without a single-schema solution.
- Uses React, Redux Toolkit, styled-components, react-hook-form, React PDF, Vite, Lokalise, React Testing Library and Playwright.
Diogo S.
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 R.
Last position:
Sabbatical with Training at Own Sabbatical
Basel J.
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, TÜV, and VDE standards.
- Act as technical liaison between customers, sales teams, and manufacturing to deliver customized solutions.
Oleg A.
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
Vili D.
Last position:
Technical Lead, Data Engineer at Mercedes-Benz Consulting
- Optimized the data architecture (medallion) to better decouple processing stages and improve transparency and reproducibility
- Ensured technical quality of data processing in Databricks by introducing schema enforcement, data quality checks and a structured data architecture
- Orchestrated pipelines with Azure Data Factory
- Professionalized and automated the development and deployment process by integrating Git and GitHub Actions
- Led the Data Engineering team (3 members) in a functional role
- Conducted workshops to optimize and stabilize the data platform and the development process
- Collected and prioritized new requests, maintained the product backlog
- Technologies: Microsoft Azure (Data Lake, Data Factory), Databricks, Apache Spark (PySpark), Python, SQL, Git, Confluence, Power BI, Power Apps, Dataverse, MS SharePoint, Mural
Heiko K.
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 G.
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.
Beserithan M.
Last position:
SD Development and CRM Interaction Center Development at Sanner GmbH
- Part-time 2-3 days/week
- Developments in the SD module and CRM Interaction Center
- Consulting, customizing in SD module
- Adapting Fiori applications in the SD module
- Approval workflow for credit memos: design, concept, implementation, customizing
- Credit memo request: object type BUS 2094
- If the credit memo request value is below a certain threshold -> automatic release and removal of billing block
- If the credit memo request value is above a certain threshold -> automatic determination of the responsible employee
- The employee receives a work item in their integrated inbox or in My Inbox (Fiori) -> the employee can reject, approve, or edit the credit memo request
- UML modeling in technical documentation
- Creating a Z-table for customer sample line items
- Merging COA1 (delivery) + COA2 (CAQ) forms and adding to the spool request as a single PDF
- Correcting workflow title according to NACE, fixing message "ZBMA title is displayed incorrectly in SBWP (Workplace)"
- Receiving PLM documents from an external PLM system, creating an RFC function module, storing PLM documents in the material master as GOS objects
- On releasing a production order, reading PLM documents from MM and saving them in a shared folder for the MES system
- Displaying the number of inspection methods in a popup when creating an order -> VA01/VA02
- Automatic stock reconciliation LVS IDOC INVCON
- Performing AQUA tests
- IDOC archiving for old IDOCs
- NL_PM_drawings and storing print output, informing MES via ZPPORDER IDOC, writing technical documents
- Using SD user exits, BADIs for various requirements
- Extending screens for customer requests via screen exits
- Creating message types for sales orders, purchase orders, and invoices
- Extending CRM Interaction Center Business Partner -> Overview -> Contract with customer-specific requirements
- New Fiori application departure control with data from Z-table and standard equipment tables, displaying a pie chart, calculating "vehicles in operation"
- Extending Interaction Center Business Partner -> Overview -> new tab on Overview Page with list tables for performance feedback, attachments from GOS objects
- Extending Interaction Center Business Partner -> Overview -> new tab on Overview Page with list tables for PM quality notifications, attachments from GOS objects
- Implementing BADIs in CRM
- File storage on SAP server/UNIX server
- Using BOL/GENIL architecture in CRM development
- Project language: German
Peter K.
Last position:
Hardware and Software Developer / Project Manager at Anonymer Kunde
- Development of control units for the automotive industry incl. embedded software
- CAN bus, Vector Tools, CANoe
- Support of the development process according to ISO 26262
- Ensuring cyber security standards:
- Key exchange (PKI) between vehicle and control units
- Hardware Security Module (HSM)
- Communication with external service providers (international)
- Development (PCB) of measuring adapters, statistical analysis of sensors
- IoT and embedded software development, backend administration
Thomas S.
Last position:
GEDISA mbH
- Development of various backends (PHP) in a microservice architecture with STRENGTHS
- Development of administration interfaces with Laravel Filament diligent consistent agile
- Integration of third-party providers via REST interfaces patient attention to detail motivating
Ines R.
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.
Discover over 15,000 top freelancers
Statistics of experts using Object-Oriented Programming
Aggregated from the professional profiles of matched freelancers.
Experience
22 years
Position duration
2.4 years (Germany: 3.2 years)
Positions per freelancer
17 (Germany: 15)
Top business areas
Product Development, Information Technology, Project Management
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
96% (Germany: 89%)
Master's degree or higher
67% (Germany: 59%)
Doctorate
21% (Germany: 8%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
English, German, French
Speak two or more languages
93% (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 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 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 (93%)
- Automotive (45%)
- Banking and Finance (41%)
- Education (38%)
- Manufacturing (34%)
- Professional Services (34%)
- Retail (34%)
- Healthcare (31%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core principles
Object-Oriented Programming, commonly called OOP, structures software around objects that combine state and behavior. Classes define reusable models, while encapsulation protects internal logic, inheritance supports specialization, and polymorphism allows shared interfaces across different implementations. These principles help teams manage complex systems without tying every feature to one large codebase.
What it builds
OOP is used for business applications, web services, desktop software, mobile products, games and embedded systems. It suits domains with clear entities and evolving rules, such as commerce, finance, logistics, healthcare and manufacturing. Strong design keeps domain behavior close to the data it governs and makes future changes easier to contain.
- Domain models and service layers
- APIs, backend applications and integrations
- User interfaces and desktop applications
- Reusable libraries and shared components
Languages and tooling
Professionals apply OOP through languages such as Java, C++, C#, Python, Ruby, Kotlin and Swift. Their work may involve frameworks including Spring, .NET, Django, Rails or Qt, supported by package managers, build tools, testing frameworks and version control. The language matters, but so do the conventions and architectural patterns of its ecosystem.
When companies need help
Companies often bring in freelance expertise when a growing codebase has unclear responsibilities, duplicated logic or difficult releases. Specialists can establish domain models, refactor legacy inheritance, define interfaces, improve testability and guide a migration to cleaner architecture. In Berlin, they may support local product teams through on-site workshops or remote collaboration with distributed groups.
- Untangle tightly coupled modules
- Introduce patterns without overengineering
- Improve unit and integration test coverage
- Review an architecture before a major release
OOP and alternatives
OOP is not automatically the best fit for every system. Functional programming can offer stronger emphasis on immutability and transformation, while procedural or data-oriented approaches may be clearer for focused workflows or performance-critical processing. Experienced professionals choose a balance based on domain complexity, team skills, runtime needs and the cost of change.
What strong experts bring
Strong OOP professionals think beyond isolated classes. They explain trade-offs, keep abstractions purposeful and use composition when inheritance would create rigid dependencies. They can read an unfamiliar codebase, identify useful boundaries, write tests around behavior and communicate design decisions clearly in English and, when needed, German-speaking Berlin teams.
Frequently asked questions
Key details about Object-Oriented Programming, drawn from the questions we get asked most.
Object-Oriented Programming is used to model software as interacting objects with defined data and behavior. Companies use it for backend systems, web applications, desktop tools, mobile products, games, embedded software and domain-heavy business platforms.
OOP organizes behavior around objects and their responsibilities, while functional programming emphasizes pure functions, immutable data and composable transformations. Many modern systems combine both styles, so the right choice depends on the domain, runtime constraints and the team's ability to maintain the design.
A strong Object-Oriented Programming specialist should understand software architecture, automated testing, version control, databases and API design. Useful ecosystem knowledge may include Java and Spring, C# and .NET, C++ and Qt, or Python and Django, depending on the project.
The required depth of OOP experience depends on the codebase, domain complexity and expected ownership. A focused feature may need solid language and testing skills, while legacy modernization or architecture work calls for someone who can assess dependencies, preserve behavior and lead technical decisions.
Yes. Object-Oriented Programming work is well suited to remote collaboration through repositories, issue tracking, code review, documentation and regular design sessions. Berlin teams should agree early on working hours, communication habits and whether workshops or sensitive delivery phases require on-site presence.
OOP may add unnecessary structure to small scripts, simple data transformations or systems where data layout and processing speed are the primary concerns. A professional should be able to recommend procedural, functional, data-oriented or hybrid design instead of forcing classes into every problem.
Ask how the OOP specialist handles coupling, inheritance, composition, boundaries and changing requirements. Review a concrete example of refactoring or design work, and look for clear reasoning, meaningful tests, readable interfaces and an ability to explain trade-offs without relying on patterns as decoration.
Working with Object-Oriented Programming often means maintaining a living model rather than simply writing isolated classes. Freelancers should expect code reviews, domain discussions, integration constraints and decisions about compatibility, testing and gradual change across the wider technology stack.
The average hourly rate of freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects is 84 €, which corresponds to a daily rate of about 676 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects, 96% hold at least a Bachelor's degree, 67% hold at least a Master's degree, and 21% hold a doctorate.
On average, freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects are English (97%), German (93%), and French (24%).
The most common industries among freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects are Information Technology (93%), Automotive (45%), and Banking and Finance (41%).
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 (97%), and Project Management (52%).
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.
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Dortmund Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
