Delphi Experts in Düsseldorf
matched in minutes by AIHire experts who modernize Delphi applications, design VCL and FireMonkey interfaces, and connect business software to databases and APIs. FRATCH finds precise matches with vetted, available freelancers quickly.
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
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.
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
Nils S.
Last position:
Backend system and web client for exchanging electricity meters for utility providers at Freelance
Design and implementation of a system to control the entire process for new, removal, and exchange operations of electricity meters by external service providers for a utility company
Automated retrieval of orders and available devices via defined interfaces (e.g. from SAP)
Orchestration of process steps (assigning meters, processing meter data, sending updated information back to the source system) using 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
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
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
Position duration
2.1 years
Positions per freelancer
15
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%
Master's degree or higher
50%
Certifications per freelancer
2
Most common languages
German, English, Russian
Speak two or more languages
86%
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 Düsseldorf 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 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 19 Sep 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 at a glance
Delphi is a development environment and programming language built around Object Pascal. It is used to create compiled Windows applications, business software, utilities and database-driven systems. The technology is known for fast native performance, a productive visual designer and mature support for long-running applications.
Applications and systems
Delphi remains common in enterprise software where reliability, desktop integration and direct access to data matter. Companies use it for operational tools, point-of-sale systems, manufacturing interfaces, logistics software and specialist applications in regulated or industrial settings. It can also support modern services and connected clients when its older code is carefully integrated.
- Maintain and extend Windows business applications
- Create VCL desktop interfaces and FireMonkey cross-platform clients
- Connect applications to SQL databases, REST APIs and device interfaces
- Replace fragile modules without disrupting daily operations
Ecosystem and tooling
The Delphi ecosystem includes Embarcadero Delphi, Object Pascal, VCL and FireMonkey. Strong specialists work with RAD Studio, Delphi package management, debugging and profiling tools, and database access libraries such as FireDAC. They may also use Git, automated builds, REST components and third-party controls to fit existing delivery practices.
When freelance expertise helps
Companies often bring in freelance Delphi expertise during application modernization, staff changes, migration projects or urgent maintenance. A specialist can map unfamiliar Object Pascal code, isolate risks, improve test coverage and separate user-interface logic from business rules. In Düsseldorf, remote collaboration can work well when requirements, access and release processes are clearly documented; on-site sessions may help with complex legacy systems or hardware links.
What strong specialists deliver
Effective Delphi professionals understand both the language and the operational context around the software. They ask how data moves, which users depend on each workflow and what cannot be interrupted. Their deliverables may include refactored modules, tested database integrations, documented APIs, deployment packages and a practical handover for the internal team.
- Diagnose performance, memory and stability problems
- Refactor legacy code while preserving business behavior
- Secure database, file and network interactions
- Explain technical decisions in clear language
Choosing the right fit
Look for evidence of shipped Delphi applications similar to yours, not only familiarity with syntax. Discuss the age of the codebase, compiler and component dependencies, database technology, deployment model and testing approach before work begins. For teams in Düsseldorf, language and working-hour alignment can matter as much as technical skill when specialists collaborate with users, suppliers or an internal IT team.
Frequently asked questions
Questions about Delphi? Start with the answers below.
Delphi is used for native Windows business applications, database tools, industrial software, utilities and specialist desktop systems. It is also suitable for maintaining established applications that require stable performance and close integration with operating-system features.
Delphi produces native compiled applications and offers a visual development workflow through VCL and FireMonkey. C# and Java often provide broader contemporary ecosystems, while Delphi can be a strong choice when an organization already depends on Object Pascal code, established components and fast desktop delivery.
A strong Delphi specialist may also understand SQL, FireDAC, REST APIs, Windows services, source control and automated builds. Experience with VCL, FireMonkey, third-party components and legacy code analysis is especially useful for existing applications.
The right level depends on the codebase, release risk and integration work rather than on a fixed duration. Embarcadero Delphi projects with complex database logic or old third-party components benefit from a specialist who has already diagnosed and modernized comparable systems.
Yes, Delphi work can be handled remotely when repositories, test environments, application access and release responsibilities are available. On-site workshops in Düsseldorf may still help when the system connects to local devices, operational equipment or users who need direct support.
Modernizing Delphi is often sensible when the application contains valuable business rules, reliable workflows and users who depend on it daily. Replacement becomes more attractive when the code cannot be tested, key components are unavailable or the required target environment no longer fits the application.
Ask for a clear explanation of a comparable Object Pascal project, including how risks were found, tested and communicated. A capable professional should discuss dependencies, database behavior, deployment, failure handling and maintainability rather than focusing only on interface changes.
Before starting Delphi work, clarify the compiler and RAD Studio setup, source-control process, database stack, third-party components and production deployment path. It is also important to understand whether the assignment covers maintenance, modernization, new modules or support for hardware-linked workflows.
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 2.1 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.
Countries:
Berlin Hamburg Munich Cologne Frankfurt Stuttgart 
Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
