Daniel Friedrich - Senior Delphi / C# Developer

Q: Where is Daniel based?

Daniel is based in Kürnbach, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Daniel speak?

Daniel speaks the following languages: German (Native), English (Intermediate) .

Q: How many years of experience does Daniel have?

Daniel has at least 21 years of experience. During this time, Daniel has worked in at least 15 different roles and for 10 different companies . The average length of individual experience is 1 year . Note that Daniel may not have shared all experience and actually has more experience.

Q: What is Daniel's latest experience?

Daniel's most recent position is Senior Delphi / C# Developer at Mazda Motors Europe .

Q: What companies has Daniel worked for in recent years?

In recent years, Daniel has worked for Mazda Motors Europe , Mazda Motors Germany , Mercedes-Benz AG , Gentherm GmbH , and Deutsche Telekom AG .

Q: Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Automotive , Manufacturing , and Telecommunication . Daniel also has some experience in Information Technology (IT) , Healthcare , and Government and Public Administration .

Q: Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology (IT) , Project Management , and Product Development . Daniel also has some experience in Quality Assurance (QA) , Customer Service , and Logistics .

Q: Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Automotive , Manufacturing , and Telecommunication .

Q: Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology (IT) , Project Management , and Product Development .

Recommended expert

Kürnbach, Germany

Experience

Jan 2024 - Present

2 years 2 months

Senior Delphi / C# Developer

Mazda Motors Europe

Maintenance and extension of the DMS (Dealer Management System) created by Mazda, as well as the external interfaces to various third-party systems
Management of service orders and provision of central components such as customer and vehicle management
System design and further development/maintenance of the Delphi application on a Firebird database
Creation and maintenance of SOAP/REST based interface connections
Technologies: Delphi, C#, .Net, SOAP, REST, Firebird, OAuth, Jira, DUnitX, Git

Jun 2023 - Dec 2023

7 months

Senior Delphi Developer

Mazda Motors Germany

Expansion of the DMS to include an external interface for integration into the Ford ecosystem for customer management and repair order management
System design and development of the SOAP web service interface using Delphi and a Firebird database
Technologies: Delphi, SOAP, XML, Firebird, REST, OAuth, Jira, DUnitX, SVN

Apr 2023 - Jun 2023

3 months

Senior C# Developer

Mercedes-Benz AG

System design and specification of a flexible XML transformation interface for automated delivery of translation files from a CMS to a translation agency
Development of a C# command-line application for asynchronous data processing, planned for integration into a REST-based web solution
Technologies: C#, .Net Core, XML, asynchronous data processing, Git, Jira, Confluence

Nov 2022 - Present

3 years 4 months

Senior Project Manager

Mercedes-Benz AG

Conceptualization of a system for GDPR-compliant use of communication channels and internal analysis of mass data based on VINs and owner information
System design and creation of detailed specifications for microservices and their communication channels to external interfaces
Technologies: Microservices, RabbitMQ, Redis, Java, Spring, REST, XML, JSON, Confluence, Jira, Git

Jan 2021 - Feb 2021

2 months

Senior Fullstack Developer

Gentherm GmbH

Implementation of the logistics platform web application and its REST API
Use of existing multi-tier frameworks and integration into supplier systems
Technologies: C#, ASP.net MVC, MySQL, DeveloperExpress components, RemObjects SDK/DataAbstract, IIS, Visual Studio 2013, Git

Feb 2018 - Mar 2018

2 months

Senior iOS Developer

Deutsche Telekom AG

Developed a framework and a demo app for an AR-based messaging prototype with location-based services
Technologies: Xcode, Swift, ARKit, MapKit, SceneKit, Git, iOS Frameworks

Apr 2014 - Nov 2015

1 year 8 months

Senior Fullstack Developer

Gentherm GmbH

Developed a web application for a logistics platform for sea, air, and road transport used by carriers and suppliers
Developed the REST API as a bridge between the web frontend and the non-REST-compatible core system
Technologies: C#, ASP.net MVC, MySQL, Developer Express components, RemObjects SDK/Data Abstract, IIS, Visual Studio 2013, Git

Aug 2013 - Present

12 years 7 months

Senior Backend Developer / System Design / Maintenance

Deutsche Telekom AG

Continued expanding and maintaining the compensation and partner lounge system on a part-time basis
Technologies: Oracle 19c, PL/SQL, Java, Spring, AXIS3, SoapUI Pro, JBoss, Apache, Linux, SVN, SOAP, XML, web services, Eclipse, MockServices, CSV, ASCII, UTF-8, shell scripts

Aug 2013 - Oct 2022

9 years 3 months

Senior iOS Developer

IBM Research & Development GmbH

Further developed an iPad application for vehicle configuration and quote generation for the international market
Created specifications and implemented the specified enhancements
Optimized the processes within the application
Technologies: Xcode, Swift, SwiftUI, Objective-C, CoreData, SQLite, Combine, Swift Concurrency (async/await), unit testing, Git, GCD, Quartz Framework, Core Animation, REST, XML, JSON

Jul 2012 - Jun 2013

1 year

Senior Mobile Developer / System Tester

Deutsche Telekom AG

System design and development in a SCRUM project to extend the customer center with a mobile app (iOS/Android)
Developed software components as part of agile development
Technologies: Java, Spring, Hibernate, CXF, JSF, Apache Cordova (PhoneGap), Maven, Selenium, JBoss, Linux, SVN, SOAP, REST, XML, web services, Eclipse, Xcode, MockServices, Oracle

Nov 2011 - Jun 2012

8 months

SCRUM-Master / Senior Backend Developer

Deutsche Telekom AG

Introducing SCRUM in the development team and coaching the team and the Product Owners
Providing functional and technical support for redeveloping the partner lounge using up-to-date web technologies
Technologies: Java, JPA, Spring, JSF, RichFaces, jQuery, JBoss7, Oracle, PL/SQL, SoapUI Pro, SVN, SOAP, XML, Webservices, Eclipse, MockServices

Jun 2011 - Oct 2011

5 months

Fullstack Developer / Maintenance / System Testing

Deutsche Telekom AG

Enhancing, maintaining, and executing automated frontend and backend system tests for the customer center
Technologies: Java, Spring, Hibernate, AXIS3, JAXB, SoapUI Pro, JBoss, JBossWS, Apache, Linux, SVN, Maven, SOAP, XML, Webservices, Eclipse, MockServices

Apr 2011 - May 2011

2 months

iOS / Backend System Tester

Deutsche Telekom AG

Conducting system tests of a mobile application in the simulator and on devices, documenting the test cases
Conducting system tests of the SOAP/REST-based backend for managing user data for the mobile application
Technologies: iOS, iPhone, Java, SoapUI Pro, JBoss, Apache, Linux, SVN, SOAP, XML, Webservices

Jan 2010 - Jul 2013

3 years 7 months

Senior Backend Developer / System Design / Maintenance

Deutsche Telekom AG

Solution design using UML diagrams and detailed system design for the contract and reporting features of the content provider compensation system and the partner lounge web frontend
Maintaining and enhancing PL/SQL code, SQL queries, and data structures
Technologies: Oracle 19c, PL/SQL, Java, Spring, AXIS3, SoapUI Pro, JBoss, Apache, Linux, SVN, SOAP, XML, Webservices, Eclipse, MockServices, CSV, ASCII, UTF-8, Shell Scripts

May 2009 - Dec 2009

8 months

SOAP Web Services System Tester

Deutsche Telekom AG

Creating a test concept for system and regression testing of the central customer management and contract system for T-Online portals
Creating test templates and compiling all test suites for developer testing and regression testing
Managing about 1.2 million customer records and around 15,000 transactions per day
Technologies: SoapUI Pro, Groovy, PL/SQL, JBoss, Apache, Linux, SVN, SOAP, XML, Webservices, Java, Eclipse, Spring, Hibernate, MockServices

Mar 2008 - May 2009

1 year 3 months

Senior Developer

Kassenärztliche Vereinigung Bayerns

Developed a program to control the VDX data processing with the KBV and data management for invoice data handoff to SAP
Created shell scripts for parameter-driven Java applications on UNIX
Technologies: PL/SQL, Delphi 7, Oracle 10g, XML, Report Builder, XSLT, XSL, Java, UNIX, SVN

Feb 2008 - Dec 2008

11 months

Senior Developer

RMS GmbH

Enhanced and maintained the call center dispatch and billing solution
Integrated and supported the existing multi-tier architecture with MySQL and Oracle
Technologies: Delphi 7, MySQL, Oracle 9i, RemObjects SDK, Data Abstract, SOAP, XML, web services, ASP.Net, C#

Nov 2007 - Nov 2007

1 month

Instructor

Dräxlmeier GmbH

Prepared and delivered training on the Oracle access component DOA with Delphi
Taught efficient use of DOA components and optimization options in the Oracle database
Technologies: Oracle 9i/10g/11g, Delphi 7, DOA, PL/SQL

Sep 2007 - Present

18 years 6 months

Senior Developer / Project Manager / System Designer

MAN Nutzfahrzeuge AG

Implemented a web-based freight cost inquiry system for internal make-or-buy decisions
Developed a web-based transport damage database with image upload and print functions for transport insurance
Trained users
Frontend in ASP.Net with C#, application server and reporting client in Delphi with RemObjects/Data Abstract, DevExpress components, Oracle 21c
Technologies: Delphi XE7, DevExpress, RemObjects, Data Abstract, C#, ASP.Net, Oracle 21c, PL/SQL, multi-tier, SOAP web services, Git

Jun 2005 - Aug 2007

2 years 3 months

Senior Developer

Kassenärztliche Vereinigung Bayerns

Extended the billing and information system: created report DLLs for list-based chargeback and added new features to programs
Optimized performance of long-running transactions and queries
Created procedures, functions, and packages in PL/SQL for aggregation tables and server-side bulk data processing (approx. 200 million records per quarter)
Technologies: PL/SQL, Delphi 7, Oracle 10g, XML, Report Builder, XSLT, XSL, Java, UNIX, SVN

Feb 2005 - Jun 2005

5 months

Senior Developer

RMS GmbH

Design and development of software for call center dispatch and billing of shared taxi services
Integration of web services for geocoding and route planning, and a fax solution for sending routes to taxi companies
Billing of trips to transport companies and creation of statistics and reports
Multi-tier application server with MySQL/Oracle support, and a web interface for smart clients
Technologies: Delphi 7, MySQL, Oracle 9i, RemObjects SDK, Data Abstract, SOAP, XML, Webservices, ASP.Net, C#

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Automotive (18.5 years), Manufacturing (18.5 years), Telecommunication (17 years), Information Technology (10 years), Healthcare (3.5 years), and Transportation (2 years).

Automotive

Manufacturing

Telecommunication

Information Technology

Healthcare

Transportation

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (21 years), Project Management (18.5 years), Product Development (13 years), Quality Assurance (2 years), and Customer Service (1 year).

Information Technology

Project Management

Product Development

Quality Assurance

Customer Service

Summary

Since 1989, I've been involved in professional software development. My technical focus is on designing and developing native iOS applications with Swift and SwiftUI, as well as developing database-driven, graphical applications with C#, Delphi, and Java using client/server as well as web and multi-tier technologies based on SOAP or REST web services. Designing and implementing the corresponding SOAP/REST web services is also part of my portfolio, as is the development and optimization of database procedures in SQL and PL/SQL for high-performance, server-side processing of large data sets. In most projects, I was part of an agile SCRUM team.

Skills

Programming Languages

Swift Since Release (2014)
Swiftui Since Release (2019)
Objective-c 11 Years
Pl/sql > 15 Years
Java 5 Years
C# 7 Years
Delphi / Pascal > 15 Years
Html/css 4 Years

Databases

Oracle (7.x - 21c) > 15 Years
Mysql > 10 Years
Postgresql > 5 Years
Ms Sql Server 3 Years

Technologies

Rest, Soap
Xml, Json
Spring, Hibernate
Jpa, Sql

Others

Git, Bitbucket
Jira, Confluence
Xcode, Intellij
Tomcat, Maven

Languages

German

Native

English

Intermediate

Certifications & licenses

Certified SCRUM Developer

Certified SCRUM Master

Master Mechanical Engineering Technician

Business Informatics Specialist (IHK)

IHK

Profile

Created

September 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Daniel based?

Daniel is based in Kürnbach, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Daniel speak?

Daniel speaks the following languages: German (Native), English (Intermediate).

How many years of experience does Daniel have?

Daniel has at least 21 years of experience. During this time, Daniel has worked in at least 15 different roles and for 10 different companies. The average length of individual experience is 1 year. Note that Daniel may not have shared all experience and actually has more experience.

What roles would Daniel be best suited for?

Based on recent experience, Daniel would be well-suited for roles such as: Senior Delphi / C# Developer, Senior Delphi Developer, Senior C# Developer.

What is Daniel's latest experience?

Daniel's most recent position is Senior Delphi / C# Developer at Mazda Motors Europe.

What companies has Daniel worked for in recent years?

In recent years, Daniel has worked for Mazda Motors Europe, Mazda Motors Germany, Mercedes-Benz AG, Gentherm GmbH, and Deutsche Telekom AG.

Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Automotive, Manufacturing, and Telecommunication. Daniel also has some experience in Information Technology (IT), Healthcare, and Government and Public Administration.

Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology (IT), Project Management, and Product Development. Daniel also has some experience in Quality Assurance (QA), Customer Service, and Logistics.

Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Automotive, Manufacturing, and Telecommunication.

Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology (IT), Project Management, and Product Development.

Does Daniel have any certificates?

Daniel has 4 certificates. Among them, these include: Certified SCRUM Developer, Certified SCRUM Master, and Master Mechanical Engineering Technician.

What is the availability of Daniel?

Daniel is immediately available full-time for suitable projects.

What is the rate of Daniel?

Daniel's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.