Object-Oriented Programming Experts in Berlin
matched in minutes from over 15,000 CVsHire experts who design class-based systems, refactor complex codebases and work with languages such as Java, C#, C++ and Python. FRATCH matches you quickly and precisely with vetted, available freelancers who fit your project.
Meet FRATCH Experts in Berlin, who have recently used Object-Oriented Programming
Vili D.
Last position:
Technical Lead, Data Engineer at Mercedes-Benz Consulting
Optimized the data architecture (Medallion) to better decouple processing steps and improve transparency and reproducibility
Ensured the technical quality of data processing in Databricks by introducing schema enforcement, data quality checks, and a structured data architecture
Pipeline orchestration with Azure Data Factory
Improved and automated the development and deployment process by integrating Git and GitHub Actions
Technical leadership of the Data Engineering team (3 employees)
Led workshops to optimize and stabilize the data platform and development process
Collected and prioritized new requests and 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
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.
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
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.
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.
Jan H.
Last position:
Technical Co-Founder at Telemarie UG
- Technical leadership & SW architecture: Conducted trade-off analyses for technology stacks and led the design and implementation of the software architecture, including mobile and backend solutions. Facilitated Event Storming workshops for DDD and SW architecture.
- Strategic direction & organizational development: Played a key role in defining the strategic direction of the product and organization, exploring new forms such as ownership responsibility.
- Lean Startup & Agile development: Introduced Lean and Agile principles, implemented Lean prototypes, and ensured compliance with Lean Startup processes, iteratively moving from Product/Solution-Fit to Product/Market-Fit.
- Team building & collaboration: Facilitated workshops, retrospectives, and futurespectives 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.
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.
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.
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
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
2.5 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
71% (Germany: 61%)
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 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Berlin 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 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 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 (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 concept
Object-Oriented Programming, commonly called OOP, organizes software around objects that combine data with the operations that act on it. Classes define shared structure and behavior, while inheritance, encapsulation and polymorphism support reusable designs. The approach is used across backend services, desktop applications, embedded systems and enterprise software.
Where it fits
OOP is central to languages such as Java, C#, C++, Python, Ruby and Kotlin. Strong specialists understand language-specific object models, interfaces, generics, exceptions, modules and package structures. They also work with frameworks, test libraries, build tools, version control and application programming interfaces that turn design principles into maintainable systems.
Typical deliverables
- Domain models for business applications and transactional systems
- Modular services, libraries and application programming interfaces
- Refactoring plans for tightly coupled or difficult-to-test code
- Automated unit, integration and regression test suites
- Technical documentation for classes, interfaces and dependencies
These deliverables may support web platforms, financial systems, logistics software, industrial applications or customer-facing products. The right design depends on the domain, team structure and expected change over time.
When to bring expertise
Companies often need freelance OOP expertise when a codebase has grown difficult to extend, when a new product needs a clear domain model or when an internal team is adopting a new language. Specialists can establish boundaries, reduce duplication and introduce tests without interrupting delivery. In Berlin, they may contribute on-site, remotely or through a hybrid setup with product and engineering teams.
What strong specialists do
Good professionals do more than apply patterns mechanically. They choose composition over inheritance when it reduces coupling, keep interfaces focused and make dependencies visible. They connect object-oriented design with domain-driven design, clean architecture, SOLID principles, refactoring, automated testing and practical delivery constraints. They explain trade-offs clearly to technical and non-technical stakeholders.
Choosing the right fit
Look for evidence of work on systems similar in complexity, not just a list of programming languages. Review how the specialist approaches legacy code, class boundaries, testing strategy, persistence and integration with external services. Ask for examples of design decisions and measurable deliverables, then confirm collaboration habits, documentation standards and the language expectations of your Berlin-based team.
Frequently asked questions
Key details about Object-Oriented Programming, drawn from the questions we get asked most.
Object-Oriented Programming is used to structure software as interacting objects that represent data and behavior. It is common in enterprise applications, web backends, desktop software, games, embedded products and systems that need clear modules and long-term maintainability.
OOP organizes behavior around objects and their responsibilities, while functional programming emphasizes pure functions, immutable data and transformations. Many modern systems combine both approaches, so the best choice depends on the language, domain, team experience and type of change the software must support.
A strong Object-Oriented Programming specialist often brings experience with software architecture, design patterns, refactoring, automated testing and source control. Depending on the project, useful adjacent skills include databases, APIs, cloud services, containerization, domain-driven design and continuous integration.
The required level depends on the system’s complexity, codebase condition and delivery risk. OOP specialists working on a small component may focus on clean implementation, while a legacy migration or domain-heavy platform calls for someone who can shape architecture, guide refactoring and align design with business rules.
Yes. Object-Oriented Programming work is well suited to remote collaboration through repositories, issue tracking, code review, documentation and video sessions. Agree on communication routines, review standards and working hours; German or English language expectations should be clear before the project starts.
OOP may add unnecessary structure to a small data transformation, a narrowly scoped script or a system that is naturally expressed as a pipeline of pure functions. It can also become difficult when inheritance is used broadly instead of focused interfaces and composition.
Ask the Object-Oriented Programming professional to explain a real design decision, including the alternatives rejected and the trade-offs accepted. Review how they handle coupling, cohesion, testing, error handling and change; a quality specialist makes the design understandable rather than relying on pattern names.
Freelancers working with OOP should describe the systems they shaped, the languages and frameworks involved, and the concrete outcomes of their work. Show examples of refactoring, domain modeling, test coverage improvements, API design or architecture decisions, while making clear how you collaborated with product and delivery teams.
The average hourly rate of freelancers in Berlin, Germany who have used Object-Oriented Programming in their recent projects is 85 €, which corresponds to a daily rate of about 680 € 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, 71% 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 2.5 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.
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FRATCH CEO
