Delphi Experts in Düsseldorf
for robust business software, matched in minutes with vetted and available freelancersHire experts who build and modernize Windows applications, database-driven business systems and industrial software with Delphi and Object Pascal. FRATCH finds a precise match quickly from vetted, available freelancers.
Meet FRATCH Experts in Düsseldorf, who have recently used Delphi
Daniel P.
Last position:
Freelance specialist in industrial automation technology at dPSolutions
- Self-employed PLC and software specialist focusing on automation and special-purpose machinery
- Programming, modernization, expansion and optimization of production systems, focusing on increased efficiency, data transparency and system integration
- PLC programming and safety with Siemens S7 Classic/TIA Portal, Beckhoff TwinCAT 2/3 and CoDeSys
- Development of high-level language software and database applications (.NET / C#, C++, Visual Basic .NET, Borland/Embarcadero C++)
- Development of custom software solutions for industrial automation, including embedded systems (Raspberry Pi, Arduino, NodeMCU, ESP8266)
- Integration of external systems such as reading devices, printers, scales, scanners and cameras, as well as various bus systems (Ethernet, Profinet, Profibus, EtherCAT, CAN bus, RS232, TCP/IP)
- Creation of visualizations and HMI applications with Siemens WinCC flexible, Beckhoff HMI and .NET frontends
- Planning, development and integration of machine vision solutions (Keyence, Cognex, AVS Alfavision, camera systems) in PLC and PC environments
- Design and implementation of process data collection systems and traceability solutions (100% traceability) based on Microsoft SQL Server (Compact, Express, Server), including stored procedures and direct PLC-SQL communication
- Creation of software and PLC concepts, standard function blocks and project libraries for PLC and high-level language projects
- Planning and programming of conveyor, inspection, assembly, packaging and grinding systems in industries such as automotive, chemical, food, electronics, machinery and systems engineering
- Conducting workshops and training on Siemens TIA Portal, STEP7 Classic, Beckhoff TwinCAT (including TwinSAFE), as well as topics such as architectures, safety, database integration and documentation
- Creation of technical documentation, manuals, training materials and class documentation with Microsoft Office and Doxygen
- Project management tasks from requirements analysis through planning, concept development and supplier coordination to commissioning, production support and customer support
Nils S.
Last position:
Backend System and Web Client for Replacing Electricity Meters for Energy Suppliers at Freelance
Design and implementation of a system for controlling the complete process of installing, removing, and replacing electricity meters by external service providers for an energy supplier
Automated retrieval of orders and available devices through defined interfaces (e.g. from SAP)
Orchestration of the process steps (assignment of meters, processing of meter data, transfer of updated information back to the source system) through a Spring-Boot backend
Provision of a React-based web client for operational tracking and control of orders, e.g. to continue failed process steps or resend notifications
Adnan K.
Last position:
Chief Information Officer at ARLANXEO Deutschland GmbH
- Executed post-carve-out stabilization, system consolidation and cybersecurity uplift. Re-assessed system landscape and assets and designed new IT strategy for future. Implemented new IT operating model focusing on product-centric organization and re-internalization of critical resources.
- Successfully designed new IT operating model of the company, based on massive reduction of external dependencies, insourcing of key positions and upskilling of employees.
- Massive reduction of IT cost in the first three years (-40m$), bringing IT spend level below Gartner industry benchmark (1.27%).
- Introduced new product-centric organization based on fusion teams between business and IT across the company.
- Administered implementation of corporate-wide IT/OT cybersecurity program with more than 60 projects.
- Continuous improvement of enterprise IT/OT cybersecurity maturity level with significant increase in the first two years (CMMI >3.5, C2M2 >2.5).
- Governed successful implementation of the business transformation program within IT area by overachieving the savings target by $8m.
- Initiated and created new cloud-based data management platform based on best-in-class technology.
- Implemented first company-wide Microsoft Copilot AI program based on various business cases, leveraging GenAI and AgenticAI.
Bernhard D.
Last position:
Enterprise Architect. And responsible for the cross-functional architecture as well as all domains with a focus on the sales at Süddeutsche Krankenversicherung
Creation of business and technical concepts as well as support for enterprise architecture management as part of the migration to the Adesso standard insurance solutions and the renewal of surrounding systems
Interface definitions
Business analysis and creation of the business concepts for input management and sales
Creation of architecture guidelines and processes
Processing technical and business decisions in the architecture board
Definition of service processes and system management aspects
Creation of the technical target operating model
Creation of an integration architecture for AI/LLMs from the providers Commasoft and Insiders
CommaSoft (Alan) webpages and web services
Insiders for Smartfix based on web services
Creation of a question catalog for a security/regulatory check.
Analysis of threats using threat modeling / STRIDE incl. creation of a set of measures to secure the systems
System environment: Jira, Confluence, Java, Enterprise Architect, VAIT/DORA, KritisV, GDPR, IT ServiceMgmt, Adesso Ecosphere and Insure Health, DoPIX and successor product, SmartFix, SmartFlow, Zabas, Kolumbus, Clarc archive, BiPRO, AI / LLM, MS Azure, AWS, TOM/FMO
Esmail S.
Last position:
Senior Load and Performance Tester at Deutsche Bahn (DB-Netz)
- Design, development, and execution of load and performance tests for the PRISMA project
- Use of Apache Jmeter, Gatling, Apache ActiveMQ, Jms/Tibco Ems, SikuliX, Jython, Amazon AWS, PAN-Client
- Methods: load tests, test automation
Olga M.
Last position:
External IT Consultant BI and DWH at Telefónica Deutschland
- Implement the BI solution and replace the old BI landscape
- Sub-project lead for Sales Bonus Plan: Extend the existing solution and migrate to Azure
- Sub-project lead for Cognos migration: Expand the existing data warehouse based on MS technologies
- Analyze business requirements and create the technical solution
- Expand the relational DWH database
- Develop the ETL processes (SSIS)
- Develop the multidimensional database (OLAP cubes/SSAS)
- Use of MS SQL Server 2016 (SSMS, SSIS, SSAS, SSRS), MS SQL Server PDW, Oracle, Power BI, Delta Lake, Databricks, Synapse
Anastasia R.
Last position:
Participation in the Coaching Center at Wipa GmbH
- Participation in the Coaching Center at Wipa GmbH
Discover over 15,000 top freelancers
Statistics of experts using Delphi
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Germany: 27 years)
Position duration
2.2 years (Germany: 2.4 years)
Positions per freelancer
15 (Germany: 18)
Top business areas
Information Technology, Operations, Product Development
Top industries
Information Technology, Manufacturing, Automotive
Certification focus areas
Information Technology, Project Management, Business Intelligence
Bachelor's degree or higher
83% (Germany: 87%)
Master's degree or higher
50% (Germany: 59%)
Certifications per freelancer
2
Most common languages
German, English, Russian
Speak two or more languages
86% (Germany: 96%)
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 Düsseldorf 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 Düsseldorf using Delphi
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.
Delphi 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 (86%)
- Manufacturing (86%)
- Automotive (71%)
- Government and Administration (71%)
- Retail (57%)
- Education (43%)
- Telecommunication (43%)
- Construction (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Delphi in practice
Delphi is an integrated development environment and programming language ecosystem based on Object Pascal. It is widely used for native Windows applications, database-driven business software and tools that need responsive interfaces with direct operating-system access. Existing Delphi systems often support core operations for companies in manufacturing, logistics, healthcare and finance.
Applications and systems
Delphi specialists deliver desktop software, service applications and utilities that connect users to operational data. Common project tasks include:
- Developing and extending Windows business applications
- Replacing outdated components without disrupting daily operations
- Connecting software to SQL databases, devices and enterprise systems
- Building reporting, scheduling and workflow functions
- Packaging and deploying reliable desktop releases
Ecosystem and tooling
The ecosystem includes Delphi IDE editions, Object Pascal, the VCL framework and FireMonkey for cross-platform interfaces. Professionals work with REST APIs, SOAP services, SQL databases, reporting tools, version control and automated build pipelines. They may also maintain third-party components, COM integrations and codebases inherited from earlier Delphi releases.
When freelance expertise helps
Companies bring in freelance Delphi expertise when a long-running application needs a safe extension, migration or performance review. A specialist can assess tightly coupled code, document unknown dependencies and plan changes around production use. This is especially valuable when internal teams understand the business process but no longer have deep knowledge of the codebase.
Düsseldorf project context
In Düsseldorf, Delphi software can sit inside industrial operations, logistics workflows, healthcare administration and other data-heavy environments. Remote collaboration works well for code reviews, releases and database work when access and documentation are prepared. On-site sessions can help with connected hardware, user workshops or complex handovers, while clear German or English communication keeps delivery aligned.
Signs of a strong specialist
A strong professional combines current Delphi knowledge with careful maintenance habits and a clear understanding of business-critical software. Look for evidence of:
- Safe refactoring of established Object Pascal code
- Practical VCL, FireMonkey and database experience
- API, integration and deployment troubleshooting
- Testing, source control and release documentation
- Clear explanations for technical and non-technical stakeholders
Frequently asked questions
Questions about Delphi? Start with the answers below.
Delphi is commonly used for native Windows applications, internal business tools, database systems and software that communicates with devices or enterprise services. It is a strong fit where fast desktop interaction, long-term maintenance and direct system integration matter.
Delphi can produce compact native applications with strong desktop performance and a mature visual component model. .NET and Java may offer broader hiring pools or ecosystem options, but replacing an established Delphi system can create unnecessary migration risk when the existing application remains valuable.
Delphi work often requires SQL, database design, REST or SOAP integration, Windows deployment and source-control practices. Experience with VCL, FireMonkey, reporting components, COM or connected hardware is useful when the application reaches beyond a simple desktop interface.
Delphi projects need a specialist who has worked with the relevant codebase age, framework and deployment model, not just someone familiar with the language. A short modernization task may need focused expertise, while a critical legacy system benefits from someone who can trace dependencies, test safely and communicate risks.
Delphi work is often suitable for remote collaboration through secure repositories, test environments and scheduled reviews. On-site time in Düsseldorf can still help when the project involves factory equipment, local infrastructure, user workshops or a sensitive handover.
Delphi quality is shown through specific examples of maintained or extended applications, not only through a list of tools. Ask how the specialist tests changes, handles database compatibility, manages third-party components and reduces release risk.
Object Pascal remains relevant when a company needs native desktop software, efficient development and continuity with an existing Delphi codebase. The right choice depends on deployment targets, integration needs, available expertise and the cost of introducing a different technology.
Delphi assignments often involve a mix of new features, legacy code, database integration and production support. Professionals should be ready to understand business rules quickly, work with incomplete documentation and improve maintainability without interrupting established operations.
The average hourly rate of freelancers in Dusseldorf, Germany who have used Delphi in their recent projects is 102 €, which corresponds to a daily rate of about 815 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used Delphi in their recent projects, 83% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Dusseldorf, Germany who have used Delphi in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Dusseldorf, Germany who have used Delphi in their recent projects are German (100%), English (86%), and Russian (29%).
The most common industries among freelancers in Dusseldorf, Germany who have used Delphi in their recent projects are Information Technology (86%), Manufacturing (86%), and Automotive (71%).
The most common business areas among freelancers in Dusseldorf, Germany who have used Delphi in their recent projects are Information Technology (100%), Operations (71%), and Product Development (71%).
Main locations of FRATCH Experts, who have recently used Delphi
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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