Christian Hartmann - Lead Developer / AI Engineer

Q: Where is Christian based?

Christian is based in Hamburg, Germany .

Q: What languages does Christian speak?

Christian speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Christian have?

Christian has at least 30 years of experience. During this time, Christian has worked in at least 27 different roles and for 45 different companies . The average length of individual experience is 1 year and 7 months . Note that Christian may not have shared all experience and actually has more experience.

Q: What is Christian's latest experience?

Christian's most recent position is Software Developer / Lead Developer at dpa (Deutsche Presse Agentur GmbH) .

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

In recent years, Christian has worked for dpa (Deutsche Presse Agentur GmbH) , Blume 2000 , Libri GmbH , Procast Photo/Video GmbH , and VTG GmbH .

Q: Which industries is Christian most experienced in?

Christian is most experienced in industries like Retail , Information Technology (IT) , and Transportation and Logistics . Christian also has some experience in Banking and Finance , Tourism and Hospitality , Media, and Entertainment and Publishing .

Q: Which business areas is Christian most experienced in?

Christian is most experienced in business areas like Information Technology (IT) , Product Development , and Supply Chain Management . Christian also has some experience in Operations , Project Management , and Marketing .

Q: Which industries has Christian worked in recently?

Christian has recently worked in industries like Retail , Media, Entertainment and Publishing , and Information Technology (IT) .

Q: Which business areas has Christian worked in recently?

Christian has recently worked in business areas like Information Technology (IT) and Product Development .

Recommended expert

Hamburg, Germany

Experience

Jul 2025 - Jun 2026

1 year

Software Developer / Lead Developer

dpa (Deutsche Presse Agentur GmbH)

Contributed to the development of the Rubix editorial system
Implemented various microservices based on Java, AWS S3, AWS SQS, AWS SNS, and Spring Boot, deployed to AWS ECS and AWS Fargate
Designed and developed AWS Lambdas using TypeScript
Used PostgreSQL in an AWS RDS Aurora cluster and AWS DynamoDB
Implemented continuous deployment with GitLab pipelines
Built an Infrastructure as Code environment with AWS CDK
Set up and maintained a monitoring platform using AWS CloudWatch
Developed various frontend components with Vue.js
Designed the microservice architecture applying Domain Driven Design and GraphQL interfaces

Oct 2023 - Dec 2023

3 months

Hamburg, Germany

Backend Developer

Blume 2000

Built a backend using Kotlin, Quarkus, and Kafka to provide Apple Wallet and Google Wallet passes for loyalty cards on smartphones

Apr 2022 - Jun 2025

3 years 3 months

Hamburg, Germany

Software Developer / Lead Developer

Libri GmbH

Contributed to the development of the B2B web platform Quimus
Implemented various microservices using Java, AWS S3, AWS SQS, AWS SNS, and Spring Boot, deployed to AWS EKS (Kubernetes)
Used PostgreSQL and MySQL in an AWS RDS Aurora cluster and AWS DynamoDB
Implemented continuous deployment with GitLab pipelines
Built an Infrastructure as Code environment with Terraform and AWS CDK
Developed various frontend components using Angular 14, 15, and 16
Designed the microservice architecture applying Domain Driven Design and REST interfaces

Mar 2022 - Present

4 years

Software Developer / Cloud Architect

Procast Photo/Video GmbH

Built a platform for displaying model profiles and booking them using Node.js, Spring Boot, Kotlin, Docker, React.js, and AWS Fargate
Set up the entire AWS infrastructure as code using AWS CDK
Implemented various data loading routines and REST and GraphQL backends using AWS Serverless, AWS S3, Node.js, and Java
Deployed serverless components using the Serverless Framework

Jan 2020 - Mar 2022

2 years 3 months

Hamburg, Germany

Software Developer / Cloud Engineer

VTG GmbH

Contributed to the development of a B2B web platform
Implemented various event-driven serverless microservices using Kotlin, AWS Lambda, AWS DynamoDB, AWS S3, AWS SQS, AWS SNS, and Spring Boot
Implemented various API endpoints using Kotlin, AWS Lambda, and AWS API Gateway
Set up continuous deployment to an AWS serverless environment using AWS CloudFormation, the Serverless Framework, and GitLab pipelines
Built an Infrastructure as Code environment with CloudFormation, the Serverless Framework, and Terraform
Developed various frontend components using Angular 13
Supported the introduction of a Docker environment using AWS Fargate and Kubernetes (AWS EKS)

Jul 2019 - Dec 2019

6 months

Hamburg, Germany

Backend Developer / DevOps Engineer

edith.care GmbH

Implementation of various microservices based on Dropwizard and Spring Boot with Java 11, 12 and 13 as backend system for an iOS and Android app
Continuous deployment into a Docker Kubernetes cluster using Jenkins pipelines and Terraform (Infrastructure as Code)
Preparation for migration from IBM Cloud to AWS
Design and implementation of resilience strategies
Use of messaging systems Kafka and IBM MQ
Use of MongoDB as a NoSQL database
Use of Gradle as build system
Use of Redis as distributed cache
Support in implementing the app with React Native

Apr 2019 - Present

6 years 11 months

Senior Software Developer / Cloud Engineer

Moebel.de AG

Development and enhancement of microservices based on Spring Boot with Java 11 and AWS Lambdas (serverless)
Implementation of the GUI using Thymeleaf
Continuous deployment using Docker, AWS ECS and AWS EC2
Implementation of various Lambda functions with deployment via the Serverless Framework
Using MongoDB as database
Building and improving monitoring dashboards based on Datadog and AWS CloudWatch
Further development of OAuth2 security (JWT) based on AWS Cognito
Use of various AWS services such as SQS, SNS, CloudWatch, CloudFormation, EC2, ECS, Lambda, S3, Cognito
Using GitLab as continuous deployment pipeline
Building a prediction model based on Apache Spark to determine CTRs

Jan 2019 - Mar 2019

3 months

Berlin, Germany

Senior Backend Developer / Cloud Engineer

ImmobilienScout24

Development and enhancement of microservices based on Spring Boot with Java 8, 9, 10, 11 and Kotlin, and AWS Lambdas (serverless)
Support in migrating from a data center to AWS Cloud
Continuous deployment using Docker and AWS ECS
Building monitoring dashboards based on Grafana, Graphite, Datadog and AWS CloudWatch
Use of various AWS services such as SQS, SNS, RDS, Elasticsearch, CloudWatch, CloudFormation, EC2, ECS, ElastiCache, Lambda, S3
Using Jenkins as continuous deployment pipeline

Sep 2018 - Dec 2018

4 months

Hamburg, Germany

Backend Developer / DevOps Engineer

edith.care GmbH

Implementation of various microservices based on Dropwizard, Java 10 and Java 11 as backend system for an iOS and Android app built with React Native
Continuous deployment into a Docker Kubernetes cluster using Jenkins pipelines
Use of messaging system Kafka
Design and development of a JWT system using Keycloak
Use of MongoDB as database
Use of Gradle as build system
Use of Redis as distributed cache
Fully automated generation of PDFs using the templating features of Apache PDFBox
Building a notification service for sending push notifications

Sep 2017 - Dec 2018

1 year 4 months

Hamburg, Germany

Senior Software Developer / Cloud Engineer

Edeka AG & Co. KG

Implementation of various microservices based on Spring Boot with Java 8, 9, 10, 11, Kotlin and Node.js
Cloud computing with Amazon Web Services including introduction of a security concept
Support in implementing the DevOps philosophy using Ansible and AWS CloudFormation (Infrastructure as Code)
Introduction of continuous deployment pipelines based on Docker
Use of Spring Cloud and Netflix Hystrix to ensure resilience, as well as Netflix Eureka for service discovery
Implementation of various web frontend applications using Angular 1, 2 and 5
Use of Amazon SQS and SNS, as well as ActiveMQ for queuing and topic systems
Use of Solr and Elasticsearch as search indexes, as well as PostgreSQL and Oracle as database systems
Introduction of a centralized logging system for microservices based on Graylog
Introduction of a centralized monitoring and metrics system based on Grafana and InfluxDB
Building a complete microservices system based on domain-driven design and event-driven principles
Implementation of various serverless microservices using AWS Lambda
Participation in concept and development of a custom shop system, including integration with supplying and processing systems
Participation in providing customer and offer data for newsletter delivery

May 2017 - Aug 2017

4 months

Hybrid

Mobile Developer

Igefa Handelsgesellschaft mbH & Co. KG

Implementation of a hybrid app for iOS and Android based on the NativeScript framework using TypeScript and Angular 4
Use of beacons (Bluetooth Low Energy) to determine location and identify machines
Implementation of the complete order process within the app
Implementation of order management for machines including spare parts ordering, maintenance and relocation orders, as well as statistical functions

Nov 2016 - Dec 2016

2 months

Hamburg, Germany

Software Developer

Mondia Media GmbH

Further development of the in-house CMS system based on JavaScript and Node.js
Design and implementation of a distributed system for generating music fingerprints based on Java 8 and ActiveMQ

Mar 2016 - May 2017

1 year 3 months

Hamburg, Germany

Senior Software Developer / Cloud Engineer

Edeka AG & Co. KG

Implementation of various microservices based on Spring Boot and Java 8
Introduction of cloud computing with Amazon Web Services
Support in implementing the DevOps philosophy
Introduction of continuous deployment pipelines based on Docker
Use of Spring Cloud and Netflix Hystrix to ensure resilience, and Netflix Eureka for service discovery
Implementation of various web frontend applications based on AngularJS 1.x and 2.x
Use of RabbitMQ as a queuing system
Use of Solr and Elasticsearch as search indexes, and PostgreSQL and Oracle as database systems
Introduction of a centralized logging system for microservices based on Graylog
Introduction of a centralized monitoring and metrics system based on Grafana and InfluxDB

Apr 2015 - Mar 2016

1 year

Hamburg, Germany

Senior Mobile Developer / Backend Developer

Telefónica / O2 / Eplus GmbH

Design and implementation of the functional and technical relaunch of the online sales channel Smartkauf using the JavaScript MEAN full stack (MongoDB, Express, AngularJS, Node.js)
Design and implementation of frontend routines based on JavaScript, AngularJS, HTML5, REST, CSS, and Twitter Bootstrap
Implementation of backend routines based on JavaScript, Node.js, Express, MongoDB, and REST
Design and implementation of a UI pattern library with Node.js, JavaScript, HTML5, CSS, Sass, and Compass
Further development of the end-customer self-care applications MeinO2 and MeinBlau.de based on Android 4.x to 6.x (Java 1.7 and 1.8) and REST
Design and development of microservices based on Java 1.8 and Spring to encapsulate access to Telefónica backend systems
Building a continuous delivery and continuous integration platform for microservices and Android apps

Feb 2015 - Apr 2015

3 months

Hamburg, Germany

Big Data / Backend Software Developer

Xplosion Interactive GmbH

Design and implementation of various backend services based on Java 1.7 and 1.8 for creating and managing profile segments
Use of Cassandra as a NoSQL database, Hadoop, Kafka as a message broker, and MySQL
Design and implementation of frontend JavaScript routines for generating and sending profile data
Development of a management system for configuring segmentation based on Spring Boot, AngularJS, and jQuery
Implementation of various scripts for automatic deployment in AWS EC2 environments using the Chef deployment framework (infrastructure as code)
Use of a Jenkins infrastructure for continuous integration and continuous deployment
Use of Gradle as a build system for Java and Grunt as a build system for JavaScript
Use of Tomcat as a runtime environment

Jan 2015 - Feb 2015

2 months

Hamburg, Germany

Frontend Developer

Tchibo GmbH

Design and implementation of a UI pattern library using Node.js, JavaScript, HTML5, CSS, Sass, and Compass

Dec 2014 - Feb 2015

3 months

iOS Developer

Anonymous Client

Integration of new features from an Android app into an existing iOS app
Migration of the existing Objective-C code of the iOS app to Swift

Aug 2014 - Dec 2014

5 months

Hamburg, Germany

Senior Software Developer

Kühne & Nagel AG & Co. KG

Design and server-side implementation of various vertical microservices for the K and N Login customer portal based on Java 1.8, Spring Boot, Spring Integration, Spring Data, Spring JMS, Guava, MongoDB, Oracle Database, Tomcat, Elasticsearch, Apache Kafka, Mockito, and Selenium
Development of various web frontends using REST, JavaScript, AngularJS, jQuery, HTML5, and CSS3
Development of various PL/SQL import routines and Oracle database structures
Contribution to building a continuous integration pipeline using Jenkins, Docker, and Ansible

Aug 2014 - Oct 2014

3 months

Hamburg, Germany

Android Developer

IT-Steps 24

Full development of the Hafenradar Android app to display ship positions using Android and Java
Communication via a bidirectional RESTful interface in JSON format
Use of an SQLite database
Testing with Robotium
Build with Gradle

Jul 2014 - Aug 2014

2 months

Android Developer

Unnamed Grocery Retail Client

Full development of an Android app that guides customers through the supermarket with personalized features (shopping lists, offers, recipe ideas)
Use of iBeacon technology for location-based notifications in the supermarket
Testing with Robotium
Build with Gradle

Jan 2014 - Jun 2014

6 months

Hamburg, Germany

Android Developer

AudioGuideMe

Complete development of the Android app for recording and playing back audio at locations
Communication via a bidirectional RESTful interface in JSON format
Use of the RoboSpice framework for REST calls
Use of a SQLite database
Tests with Robotium
Build with Gradle

Jul 2013 - Jul 2014

1 year 1 month

Hamburg, Germany

Senior Java Developer

EliteMedianet GmbH (ElitePartner)

Design and server-side implementation of a RESTful API based on Jersey, Spring 3.x, and Spring Security (Java 1.7)
Implementation of various SOA backend processes using Spring 3.x, Hibernate, and Spring Data (Java 1.7)
Migration of legacy code into an SOA architecture
Ensuring test coverage using Mockito, Selenium, and integration tests
Connecting backend processes to the GUI layer (Struts 2)
Implementation of various backend batch processes using Spring, Spring Batch, and Spring Scheduler
Co-development of the transition to a mobile website based on AngularJS and jQuery
Implementation of a bulletin board system using Spring Boot, Spring 4.x, MongoDB, AngularJS, and jQuery

May 2013 - Jun 2013

2 months

iOS Developer

La Paz Zigarren

Complete design and implementation of an iPad app for promotional campaigns in city centers and airports using Objective-C
Use of CoreAnimation and CoreImage for visual effects, including simulating taking a match out of a box and lighting a cigar

Jan 2013 - Jun 2013

6 months

Bargteheide, Germany

Java Developer

etvice Holding AG

Implementation of various use cases based on the Wicket 6 web framework, JavaScript with jQuery, and Java 1.7
Integration of customer interfaces using SOAP and REST with Axis 2 and Apache CXF
Implementation of the data access layers for accessing an Oracle database using Hibernate 4
Creation and integration of asynchronous background processes and pushing status to the GUI layer using the Quartz framework
Performance optimizations of the Oracle databases
Performance optimizations of the Java code

Dec 2012 - Feb 2013

3 months

Hamburg, Germany

Mobile Developer

Storytail

Further development of the WoooBee iOS app for recommending vouchers and locations using Objective-C
Further development of server routines based on Java and Spring Roo
Communication via a bidirectional RESTful interface in JSON format
Use of a SQLite database
Tests with Robotium
Build with Maven and Gradle

Nov 2012 - Nov 2012

1 month

Hamburg, Germany

iOS Developer

IT-Steps 24

Full development of the iOS app Hafenradar for displaying ship positions based on Objective C
Communication via a bidirectional RESTful interface in JSON format
Use of an SQLite database

Oct 2012 - Nov 2014

2 years 2 months

Nusse, Germany

iOS Developer

Junior-Foto

Full development of an iOS iPad app for handling photo orders by photographers using Objective C
Communication via the iOS Dropbox SDK
Use of an SQLite database

Jun 2012 - Aug 2012

3 months

Hamburg, Germany

iOS Developer

Budy & Selly / Reverse Retail GmbH

Full development of an in-house iPad iOS app to support the purchase of branded goods using Objective C
Communication via a bidirectional RESTful interface in JSON format
Use of an SQLite database

Jun 2012 - Aug 2012

3 months

Austria

iOS Developer

Wirtschaftskammer Österreich

Full development of a trip log and a labor cost calculator as an iOS app using Objective C
Use of an SQLite database

May 2012 - Jun 2012

2 months

Hamburg, Germany

iOS Developer

Coloplast

Full development of the iOS app Wound Dressing Selector to help medical staff choose wound dressings using Objective C
Full development of the server routines based on Java and Spring Roo
Communication via a RESTful interface in JSON format
Use of an SQLite database

May 2012 - May 2012

1 month

Frankfurt, Germany

iOS Developer

Gerlinger & Partner GmbH

Full development of the iOS app Juungle for finding nearby contacts based on Objective C
Full development of server routines using Java and Apache CXF
Communication through a bidirectional RESTful interface in JSON format
Use of a SQLite database

Aug 2011 - Jul 2012

1 year

Cologne, Germany

iOS Developer

iTravel GmbH

Full development of an iOS app for marketing exclusive travel offers based on Objective C
Communication through a bidirectional RESTful interface in JSON format
Use of a SQLite database

Jun 2011 - Dec 2011

7 months

Hamburg, Germany

iOS Developer

BonusMagnet GmbH

Full development of an iOS app for vouchers and customer cards based on Objective C
Communication through a bidirectional RESTful interface in JSON format
Use of a SQLite database

Apr 2011 - Dec 2012

1 year 9 months

Hamburg, Germany

Senior Java Developer

Mondia Media Group GmbH (formerly Arvato Mobile GmbH)

Implementation of shop content repositories for virtual goods based on Java 6, Spring 3.x, and Apache MQ
Implementation of services such as payment, user rating, voucher, and wallet for mobile platforms based on Java 6, SOAP, web services, RESTful services, Apache CXF, Hibernate, Tomcat, MySQL, Spring 3.x, and Spring Data
Design and implementation of various RESTful APIs using Apache CXF
Design and implementation of interfaces to payment providers for handling digital purchases via SOAP or REST
Design and implementation of mobile shops based on Spring MVC and the Magnolia CMS

Mar 2011 - May 2011

3 months

Android Developer

Brand & Nobel GmbH

Full development of the Android app photo2Fun for creating one-click photo montages
Use of a RESTful API
Tests with Robotium
Build with Ant

Oct 2010 - Dec 2014

4 years 3 months

Android Developer

Eifrig Media

Complete development of the Android app Blitzer.de to warn about speed cameras
Use of a SQLite database
Synchronization of data based on a RESTful API
Implementation of complex calculations to determine distances and directions of speed cameras
Customizing the app into a free version and a paid version as well as an English version
Tests with Robotium
Build with Ant and Gradle

Oct 2010 - Feb 2011

5 months

iOS Developer

PPMG Potsdamer Platz Management GmbH

Complete development of an iOS app as an audio guide with display of spots around Potsdamer Platz in Berlin
Communication over a two-way RESTful interface in JSON format

Sep 2010 - Dec 2010

4 months

Frankfurt am Main, Germany

Database Developer / ETL Specialist

T-Systems

Design and implementation of ETL loading processes in an Oracle database using PL/SQL and XML for reporting business partners to Deutsche Telekom
Integration of the routines into an existing ETL framework

Aug 2010 - Aug 2010

1 month

Hamburg, Germany

iOS Developer

Salam Business Club

Complete development of an iPhone/iPad app for a social network using Objective-C
Use of a provided RESTful interface

Aug 2010 - Aug 2010

1 month

iOS Developer

Unnamed Client

Implementation of an iPhone app for barcode scanning of digital media and offering a preview of tracks and videos
Use of a SOAP interface to fetch playlists
Development based on iOS and Objective-C

Nov 2009 - Jan 2010

3 months

Frankfurt am Main, Germany

Database Developer / ETL Specialist

T-Systems

Designed and implemented ETL loading processes in an Oracle database using PL/SQL and XML for business partner reporting to Deutsche Telekom
Integrated the routines into a framework

Sep 2009 - Sep 2009

1 month

Hamburg, Germany

Java ME Developer

SAB Ingenieurgesellschaft mbH

Designed and implemented a Java ME prototype for a trip log on mobile phones with a Java Virtual Machine
Communicated with server systems via a web service

Feb 2009 - Mar 2009

2 months

Frankfurt am Main, Germany

Integration Engineer / Database Developer

T-Systems

Implemented a JMS interface based on Oracle Advanced Queuing, PL/SQL, and Java for exchanging customer information
Serialized data in the Oracle database JVM as Java objects and placed them into a JMS queue
Enabled event-driven processing using table triggers
Migrated an existing MS SQL Server XML import to an Oracle 10g PL/SQL interface for processing XML files

Jan 2009 - Apr 2011

2 years 4 months

Munich, Germany

Freelance Architect and Developer

Steria Mummert Consulting AG

Designed and implemented technical monitoring and reporting for a software system that determines and reports taxable capital gains and sale results at transaction banks
Introduced Hibernate based on JPA (EJB 3.x) and migrated the previous persistence layer including performance tuning, reporting, and access monitoring
Designed and implemented a multi-layer architecture using EJB 3.x, BEA WebLogic 10.x, and Oracle Fusion Middleware
Evaluated, selected, and implemented an ESB system (Apache Camel)
Evaluated and selected Spring Batch and Spring Integration and implemented batch runs
Set up a continuous integration system using Maven and Hudson/Jenkins
Introduced and applied Bean Validation (JSR 303) for plausibility checks in import processes and client displays
Implemented business requirements for the management client using JSF 2.0, HTML5, and MVC
Performed database tuning and design
Implemented typed access to properties

Sep 2007 - Dec 2008

1 year 4 months

Hamburg, Germany

Technical Consultant / Architect / Developer

CoreMedia AG

Designed and developed projects based on the CoreMedia Content Management System in J2EE and Oracle environments
Worked on freenet.de's online self-care service to implement an online service for end users
Participated in the relaunch of the hamburg.de city portal, including EJB implementation and Web 2.0 functionality as well as web services
Set up Oracle database replication for VideoLoad for T Online
On-site assignment in Washington to implement a personalized portal for the AAMC MedEdPortal
Created a proof of concept implementation for Fox News in New York
Contributed to new backend features for ZDF's online media library

Apr 2005 - Aug 2007

2 years 5 months

Managing Partner

H & F Trade GmbH

Co-founder and managing partner of a direct importer and distributor in the B2C sector for consumer goods
Setup and operation of the internal IT infrastructure
Responsible for technical and IT requirements as well as logistics processes
Development of various interfaces to parcel services like UPS, GLS and DPD as well as to eBay using XML and web services
Development of various controlling systems based on Delphi, PHP, Oracle and MySQL
Involvement in concept, planning, implementation, project management and executive management

Mar 2002 - Mar 2005

3 years 1 month

Hamburg, Germany

Developer / IT Architect / Subproject Manager

Otto Group

New development of a B2B platform to support the entire procurement process for goods with a four-layer architecture based on Java and J2EE
Development of backend components as Enterprise Java Beans and frontend components based on JavaServer Pages using the Struts framework
Design and implementation of various interfaces to international sites, including Hong Kong and UK subsidiaries
Participation in the selection and implementation of a workflow management system as the workflow engine for multiple subprojects
Subproject leadership with responsibility for technical design, implementation, coordination of IT processes, meeting deadlines, quality assurance, approvals and preparation of functional tests for a subproject outsourced to an Indian development company
Design, administration, tuning and maintenance of the deployed Oracle databases, including support in setting up an Oracle 9i Real Application Cluster on Unix systems

Sep 2001 - Mar 2002

7 months

Hamburg, Germany

Diploma Candidate / Working Student

Joint venture of a Hamburg publisher and mail-order company

Authored the diploma thesis on the design and prototype implementation of an application server-based single sign-on access to B2C online services with personalization using J2EE, EJB and JSP
Administered and extended an application based on Oracle 8i, Oracle Applications and Intershop
Database administration, further development and customization of existing applications

Jan 1997 - Dec 1999

3 years

Freelance Associate for Dealer Marketing / Promotion

DeTeMobil (D1)

Freelance work in dealer marketing (shop in shop) and promotional campaigns

Jan 1996 - Dec 2002

7 years

Freelance Developer / Consultant

Various companies (freelance projects during studies)

Analysis, design and programming of a web application for a healthcare organization to provide and retrieve patient data online and by fax using Java Servlets, XML XSL, J2EE, Oracle and a Delphi Windows client
Lead programming and implementation of eBusiness, eCommerce and content management solutions based on Java Servlets, J2EE, Enterprise Java Beans, application servers, XML XSL, Oracle and Delphi clients
Lead technical implementation of internet-based B2B marketplaces with Java, J2EE, EJB, Oracle and Delphi
Oracle coaching in installation, PL/SQL, administration, backup and recovery, performance and Net8, and establishment of a certified Oracle partnership
Setup of an internet solution for a medium-sized IT service provider, including a dedicated internet connection, hardware firewall, web servers and mail servers on Linux
Design and implementation of interfaces between ERP and financial accounting systems using Delphi and Oracle
Porting of an Access application to Delphi and Oracle using the Oracle Internet Application Server
Participation in the technical implementation of an online exchange platform for global shoe trading using Delphi, Apache, CGI, JavaScript, ASP and JavaServer Pages
Participation in the development of a knowledge management, HTML publishing and content management system with Visual Basic and Apache
Participation in the implementation of a cleaning system to support a factoring system using Delphi, Paradox and Interbase
Participation in the implementation of a booking system for cruise travel with Delphi and Interbase
Sole technical development of an application covering all business operations of a medium-sized freight forwarding company using Delphi and Interbase

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 Retail (21.5 years), Information Technology (19 years), Transportation (9.5 years), Banking and Finance (9 years), Media and Entertainment (8.5 years), and Tourism (8.5 years).

Retail

Information Technology

Transportation

Banking and Finance

Media and Entertainment

Tourism

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 (30.5 years), Product Development (13 years), Supply Chain Management (7 years), Operations (7 years), Project Management (5.5 years), and Marketing (3 years).

Information Technology

Product Development

Supply Chain Management

Operations

Project Management

Marketing

Skills

Technological Focus Areas**
Java
Typescript / Javascript
Cloud Computing (Aws)
Lead Development
Programming Languages And Frameworks**
Java
Spring
Spring Boot
Kotlin
Node.js
Angular
React (Native)
Swift (Objective-c)
Cloud & Container**
Aws Cloud Computing
Docker
Serverless (Aws Lambda)
Kubernetes
Monitoring**
Kibana
Grafana
Datadog
Aws Cloudwatch
Databases**
Postgresql
Mongodb
Dynamodb (Aws)
Oracle
Mysql
Methods**
Ooa/ooe/ood
Xp (Extreme Programming)
Agile Development
Scrum
Kanban
Clean Code
Domain Driven Design (Ddd)
Soa
Microservices
Operating Systems**
Macos
Linux (E.g. Ubuntu)
Tools**
Intellij
Webstorm
Appcode
Xcode
Android Studio
Continuous Integration / Deployment**
Git
Maven
Gradle
Yarn
Npm
Terraform
Aws Cloudformation
Aws Cdk (Cloudformation Development Kit)
Gitlab Ci
Github Actions
Jenkins

Languages

German

Native

English

Advanced

Education

Oct 1996 - Jun 2002

Diploma in Business Informatics (University of Applied Sciences) · Business Informatics

Schenker Eurocargo AG

Freight Forwarder

Profile

Created

February 2026

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Frequently asked questions

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

Where is Christian based?

Christian is based in Hamburg, Germany.

What languages does Christian speak?

Christian speaks the following languages: German (Native), English (Advanced).

How many years of experience does Christian have?

Christian has at least 30 years of experience. During this time, Christian has worked in at least 27 different roles and for 45 different companies. The average length of individual experience is 1 year and 7 months. Note that Christian may not have shared all experience and actually has more experience.

What roles would Christian be best suited for?

Based on recent experience, Christian would be well-suited for roles such as: Software Developer / Lead Developer, Backend Developer, Software Developer / Cloud Architect.

What is Christian's latest experience?

Christian's most recent position is Software Developer / Lead Developer at dpa (Deutsche Presse Agentur GmbH).

What companies has Christian worked for in recent years?

In recent years, Christian has worked for dpa (Deutsche Presse Agentur GmbH), Blume 2000, Libri GmbH, Procast Photo/Video GmbH, and VTG GmbH.

Which industries is Christian most experienced in?

Christian is most experienced in industries like Retail, Information Technology (IT), and Transportation and Logistics. Christian also has some experience in Banking and Finance, Tourism and Hospitality, Media, and Entertainment and Publishing.

Which business areas is Christian most experienced in?

Christian is most experienced in business areas like Information Technology (IT), Product Development, and Supply Chain Management. Christian also has some experience in Operations, Project Management, and Marketing.

Which industries has Christian worked in recently?

Christian has recently worked in industries like Retail, Media, Entertainment and Publishing, and Information Technology (IT).

Which business areas has Christian worked in recently?

Christian has recently worked in business areas like Information Technology (IT) and Product Development.

What is Christian's education?

Christian attended education in Business Informatics.

What is the availability of Christian?

Christian is immediately available for suitable projects.

What is the rate of Christian?

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