Ingo Dettling - Java Solution Architect in Frankfurt

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Frankfurt am Main, Germany

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Experience

Apr 2022 - Dec 2025

3 years 9 months

Germany

Analytics

BaFin - Federal Financial Supervisory Authority Frankfurt

Introduction of approaches for developing and automatically deploying cloud-native software and machine learning programs in OpenShift clusters
Development of various programs in Python
Technologies: Kubernetes, OpenShift, Kustomize, ArgoCD, Tekton, Docker, PodMan, Airflow, IntelliJ, PyCharm, Git, Bitbucket, Jira, Confluence, Python

Feb 2019 - Mar 2022

3 years 2 months

Germany

Reporting and Publication Platform (MVP)

BaFin - Federal Financial Supervisory Authority Frankfurt

Java development of several MVP processors in the backend for the MVP portal
Functional implementation, refactoring, and improvement of code quality
Introduction of test-driven development
Technologies: Java, Spring Framework, EclipseLink, DB2, DBeaver, MicroProfile, REST, JaxRS, OpenAPI, Websphere, Liberty, Eclipse, IntelliJ, Git, Bitbucket, Subversion, Jira, Confluence

Feb 2018 - Dec 2018

11 months

Modularization of Offer Components (ModA) in Vendo

Deutsche Bahn

Java development, microservices with Spring Boot
Implementation of new pricing logic for offer calculation and timetable-based sales
Collaboration in the cross-functional technology team
Improvement of code quality and performance, as well as infrastructure-related topics
Technologies: AWS, OpenShift, Kubernetes, Docker, Java, Spring Boot, IntelliJ, Git, GitLab, Prometheus, Grafana, Kibana, Maven, Jira, Linux, gRPC, Protocol Buffers, Emacs, Vim

Jul 2017 - Sep 2018

1 year 3 months

Expert

Rapidmatch

Java development, API design, and implementation of microservices with Spring Boot
Database development and configuration management
Collaboration in the DevOps team
Technologies: Java, Spring Boot, SQL, PostgreSQL, IntelliJ, Swagger, Postman, Nginx, JPA, Flyway, Maven, Git, Bitbucket, AWS

Sep 2015 - Nov 2017

2 years 3 months

PDB, RWB, PRIIP, retailAPPs, House View

DZ Bank AG

Redesign and enhancement of a system for life cycle management and business transaction automation for derivatives in accordance with the PRIIP Regulation
Implementation of an Event Driven Architecture (EDA) and Complex Event Processing (CEP) as a prerequisite for microservices
Enhancement of the House View with target market data based on MiFID II requirements
Technologies: Java, JEE, Spring Framework, JavaScript, Hibernate, JPA, SQL, PL/SQL, Oracle, JBoss, Drools, IntelliJ, REST, JaxRS, Siren Hypermedia, HTML5, JUnit, Mockito, Rest-assured, Arquillian, Flyway, Maven, Mercurial, POI

Sep 2013 - Dec 2015

2 years 4 months

FRAME, CORE

Commerzbank AG

Further development of FRAME (JEE development stack)
Migration of the FRAME code generators from Xtext 2.2.1 to 2.7.3
Development of Domain Specific Languages (DSLs) and code generators
Performance optimization
Consulting and development activities for the CORE master data project
Technologies: Java, JEE, JSF, Eclipse, Xtext, Xtend, Maven, TFS, Tomcat

Jan 2013 - Aug 2013

8 months

Retail Work Bench (new)

DZ Bank AG

Development of an application to support the workflow-based and automated handling of existing processes for flow products
Central documentation of the life cycle of these products in a product master data database
Technologies: Java, JEE, EJB, JSF, CDI, JPA, POI, SQL, Oracle, Eclipse, JBoss, Arquillian, Flyway, Maven, Mercurial

Aug 2012 - Dec 2012

5 months

Basel 3 - Liquirisk (LCR, NFSR)

Deutsche Pfandbriefbank AG

Development of a web application for calculating and reporting risk indicators in accordance with Basel 3
Technologies: Java, Eclipse, Wicket, JPA, Oracle, JBoss, Maven

Feb 2012 - Jul 2012

6 months

Abacus DaVinci

Bearingpoint GmbH

Further development and maintenance of a software product for regulatory reporting by financial institutions
Technologies: Java, Eclipse, GWT, Oracle, Tomcat, Maven, Nexus, Sonar

Nov 2011 - Dec 2011

2 months

Comara

Commerzbank AG

Further development of a web application for risk analysis and reporting
Technologies: Java, Hibernate, JPA, JSF, Facelets, RichFaces, Eclipse, TCServer, Team Foundation Server, Maven, Spring Framework, Spring Web Flow, Oracle, Apache POI, EasyMock, FRAME

Apr 2011 - Oct 2011

7 months

In-house View WpHG

DZ Bank AG

Development of a system for the group-wide and timely storage and management of derivative products as the basis for customer advisory systems in accordance with WpHG
Technologies: Java, Hibernate, JPA, JSF, Facelets, PrimeFaces, Eclipse, Tomcat, ClearCase, Maven, Spring Framework, Spring Security, Oracle, Liquibase, PL/SQL, Apache POI

Nov 2010 - Apr 2011

6 months

Technical Upgrade

DB Systel

Technical upgrade of the Application Server platform from JBoss 4.0.3 EAP to JBoss 5.1 EAP for a large number of applications
Migration of the JAX-WS implementation to CXF and re-implementation of the web services
Technologies: Java, Hibernate, JSF, Eclipse, JBoss, JAX-WS, CXF, ClearCase, ClearQuest, ANT, Spring Framework, Oracle, Axis 2

Jul 2010 - Oct 2010

4 months

Ticket System SLA

FirstData

Extended a ticket system web application with functions for defining, assigning processes, and monitoring Service Level Agreements
Designed and implemented the business logic in the backend and developed the web GUI
Technologies: Java, J2EE, Eclipse, JBoss, Spring Framework, JSF, Facelets, Oracle 10i

Apr 2010 - Jul 2010

4 months

Integration Platform: RESTful Architecture

1&1 Internet AG

Implemented basic services for an integration platform based on RESTful web services
Developed a custom service registry and extended the Spring Framework for automatic service registration
Technologies: Linux, Ubuntu, Java, Eclipse, SVN, Maven, RESTful Web Services, Tomcat, JUnit, Apache CXF, JBoss RESTEasy, JSON, Hibernate, JPA, JMeter

Aug 2009 - Jan 2010

6 months

SEPA Interface Services

Hypovereinsbank

Integrated existing host systems into a group-wide SEPA payment system
Developed interface services for validating, transforming, and processing SEPA transaction data as EJB 3.0 Message Driven Beans
Connected via WebSphere MQ Series
Technologies: Java, JEE, JMS, EJB 3.0, XML, XSLT, Eclipse, Spring Framework, WebSphere MQ 7, WebSphere AS 6.1, RSA, JUnit

Mar 2008 - Jun 2009

1 year 4 months

Basel II - Advanced IRB Approach

Aareal Bank AG

Development of credit risk software for real estate financing using the advanced IRB approach to calculate the loss given default (LGD)
Role as Technical Architect, Senior Developer and SCRUM Master
Introduction of model-driven software development (MDSD) and test-driven development of the calculation logic
Technologies: Java, J2EE, UML, MDSD, MDA, Eclipse, Spring Framework, Hibernate, MagicDraw, OpenArchitectureWare, Fornax, SQL Server, FIT, JUnit, Trac

Jun 2007 - Feb 2008

9 months

EONIA

Europäische Zentralbank (EZB)

Architecture and development of a web-based front-office intranet application for the EONIA process and reporting
Integration with the Reuters information service
Technologies: Java, J2EE, JavaScript, Ajax, Eclipse, Tomcat, Spring Framework, JSF, Ajax4JSF, Prototype, Oracle 10i

Apr 2007 - Jun 2007

3 months

Rating Tree Manager

O2 Germany

Development of the Rating Tree Manager to automate the manipulation of rating trees in an Alcatel OSP IN system
Technologies: Java, XML, Eclipse, Maven 2

Oct 2006 - Apr 2007

7 months

GEPPI (General Enterprise Process & Planning Infrastructure)

1&1 Internet AG

Design and development of integration software for monitoring, controlling and planning technical and business processes
Use of Jini to implement a self-healing distributed system
Technologies: Java, J2EE, Jini, Web Services, Eclipse, JBoss, Oracle BPEL Process Manager, Apache Axis2, Oracle DB

Aug 2006 - Oct 2006

3 months

CRM - Order Entry - Billing

1&1 Internet AG

Migration of the legacy system to a service-oriented architecture
Analysis, identification of the target architecture, decomposition into service components, migration planning and effort estimation
Role: Technical Lead Architect

Nov 2005 - Jul 2006

9 months

FIDS (Flight Information Display System)

Fraport AG

Development of the communication and data storage component of a distributed, asynchronous system with XML messages via JMS
Migration from EJB 1.1 to Spring Framework and implementation of the communication component as a state machine with jBPM
Development of a web administration console with JSF
Technologies: Java, J2EE, JMS, JSF, XML, XSLT, SQL, WebSphere Application Developer, WebSphere AS, Eclipse, JBoss, jBPM, Oracle 8i, MyFaces, Spring Framework

Sep 2005 - Nov 2005

3 months

Posium

Atos Origin Worldline

Development of new functionalities in Posium, a system software for payment transactions with an integrated accounts receivable component
Implementation of business logic in session EJBs and persistence using CMP EJBs
Technologies: Java, J2EE, EJB, SQL, WebSphere Application Developer, JBoss, Oracle 8i

Jun 2005 - Sep 2005

4 months

eCDMS

SAS Deutschland

Development of a generic web application for the operational input and evaluation of medical studies with a visually configurable layout
Code generators for SAS Base Language and SAS SCL
Use of UML and MDA to generate infrastructure code and redesign the architecture
Technologies: Java, J2EE, JSP, JSF, JavaScript, SAS, Tomcat, JBoss, Eclipse, Maven, MagicDraw, AndroMDA, Spring Framework, Hibernate, JUnit, Log4J, PostgreSQL

Aug 2004 - May 2005

10 months

Fund Supermarket

Frankfurter Fondsbank

Development of a tenant-capable portal solution for portfolio management with a different appearance for each user group
Modification of the architecture to improve performance and introduction of automated tests
Use of design patterns, replacement of entity beans with Hibernate, eager loading, optimized SQL and EAI with host systems
Technologies: Java, J2EE, JSP, Servlets, Oracle 8i, BEA WebLogic, Eclipse, Ant, Spring Framework, Hibernate, Struts, JUnit, Cactus, StrutsTestCase, JWebUnit, Toad, Log4J

Feb 2004 - Apr 2004

3 months

Derivatives Platform

Accenture

Creation of the architecture and design of technical base components for an integrated platform for selling derivative financial products
Verification using prototypes and component communication via JMS bus
Role as a mentor for Filipino colleagues
Service architecture for a hierarchical security system and reporting
Technologies: Java, J2EE, JMS, Webservices, Oracle 9i, BEA WebLogic, Eclipse 2.1, JasperReports, JFreeChart

Oct 2003 - Dec 2003

3 months

IAS FairValue Hedge Accounting

Landesbank Baden-Wuerttemberg (LBBW)

Design and implementation of business logic components of a web application for hedge transactions in accordance with IAS
Synchronization with the higher-level IAS-Mart via EAI
Introduction of automated tests and persistence using Entity Beans
Technologies: Java, J2EE, EJB, CMP, Unit-Tests, Oracle 8i, BEA WebLogic, Eclipse 2.1, JUnit

Oct 2001 - Jul 2003

1 year 10 months

Hedge Accounting and Other Projects

Dresdner Bank AG

Development of a web application for managing, valuing and maintaining derivatives, hedges and credit transactions with reporting according to IAS and US-GAAP
Automated testing of JSPs and Servlets using Cactus
Development of a Struts-based framework for web applications without custom Java code
Development of automated web reporting software with XML, XSLT, FOP and JMS distribution
Development of JDBC and LDAP realms for Tomcat
Technologies: Java, J2EE, JMS, JSP, Servlets, LDAP, XML, XSLT, FOP, JBuilder, Eclipse, CVS, Windows NT, Unix, Tomcat, Cactus, Log4J, Struts, JUnit, HttpUnit, PoolMan, DbForms, Informix, MQ-Series

Sep 2001 - Oct 2001

2 months

Direct Bank Core Systems

DaimlerChrysler Bank

Analysis and recommendation for integrating custody, credit card and call center systems via EAI
Comparison of effort and costs between an in-house solution and Vitria

May 2001 - Jul 2001

3 months

Maybach

Debis (T-Systems)

Implementation of a CRM web application on WebSphere with Siebel and Oracle database synchronization
Database access using JDBC in DAOs according to the MVC pattern
Technologies: Java, J2EE, Servlets, JSP, JDBC, SQL, HTML, VisualAge for Java, WebSphere, Oracle 8i

Apr 2001 - Jun 2001

3 months

SilverDAT II Inhouse

DAT

Replacement of legacy host systems with a distributed J2EE solution using a Swing client and Session EJBs
Database access using TopLink
Technologies: Java, J2EE, RMI, Swing, EJB, ORM, JBuilder, BEA WebLogic, TopLink, Oracle 8i, PVCS

Jun 2000 - Feb 2001

9 months

Db24

Emagine (Deutsche Bank)

Development of new business processes as CORBA components for the online banking server platform
Integration with host systems via MQ-Series and framework development for encapsulating infrastructure
Development of configuration tools in UML and Java with Swing GUI
Technologies: C++, CORBA, Java, UML, MQ Series, Solaris, Windows NT, Unix, Iona Orbix, CVS, javacc, JUnit

Aug 1999 - Apr 2000

9 months

PRISMA 98

Softlab

Refactoring of BMW's PRISMA 98 PDM system to restore maintainability
Migration to a new framework and introduction of unit tests
Technologies: Smalltalk, VisualWorks, Together, Windows NT, Solaris

Apr 1996 - Aug 1999

3 years 5 months

Engineering software in the automotive sector

ISW

Development of a network-enabled remote control for Smalltalk environments and integration of CAE kernels
Enhancement of a graphics evaluation program and development of CAE feedback messages
Optimization program for valve train dynamics and further development of GUIs
Development of a browser for ASAM-ODS
Technologies: Smalltalk, VisualWorks, Windows NT, IRIX, Unix, HP-UX

Dec 1992 - Dec 1996

4 years 1 month

CORBA Projects

DIGITAL (CEC)

Design and implementation of the IIOP in-line Bridge and reimplementation of ObjectBroker repositories
ACCENT project: Investigation of the XOM interface and implementation of a class library based on ObjectBroker
Mapping of DC++ to ObjectBroker and creation of C++ language bindings for ACAS
ACA/Trellis integration and documentation as well as test suites
Technologies: C/C++ GNU Tools, MS Visual C++, UNIX, OSF1

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Banking and Finance, Government and Administration, Information Technology, Automotive, Transportation, and Telecommunication.

Banking and Finance

Government and Administration

Information Technology

Automotive

Transportation

Telecommunication

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Business Intelligence, Finance, Quality Assurance, and Project Management.

Information Technology

Product Development

Business Intelligence

Finance

Quality Assurance

Project Management

Summary

Java Solution Architect for cloud-native enterprise systems and modernization of legacy applications (banks & SMEs)

Experienced software architect specializing in the development and modernization of complex enterprise systems based on Java. Many years of project experience with banks and IT service providers. Focus on scalable and maintainable software systems, cloud-ready platforms, and integration of distributed systems.

Skills

Soft Skills

Supporting Junior Developers By Sharing Best Practices In Time-Critical Projects. Sharing Knowledge Through Leading By Example. Enjoyment Of Knowledge Transfer. Coach Or Mentor For Junior Developers. Team Player.

Competencies

Software Architecture And Development, Domain Driven Design
Java, Jee, Spring Boot, Kubernetes, Openshift, Argocd, Tekton
Agile Methods
Test-Driven Development
Refactoring
Ai-Assisted Development

Programming Languages

Java
Go
Javascript
Python

Databases

Oracle
Db2

Operating Systems

Unix
Linux
Windows
Macos

Industries

Banks
Financial Services Providers
Telecommunications
Transportation
Airport Operators
Internet
It Service Providers
Automotive

Languages

German

Native

English

Intermediate

Education

Karlsruhe Institute of Technology

Diplom-Informatiker · Computer Science · Karlsruhe, Germany

SAE

SAE Diploma in Audio Engineering · Audio Engineering

Abitur

Certifications & licenses

iSAQB

Statistics

Experience

Total positions 34

Experience in Banking and Finance 13 y

Avg length 11 m

Longest experience 4 y

Global experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Analytics, Reporting and Publication Platform (MVP), Modularization of Offer Components (ModA) in Vendo

Main industries Banking and Finance, Government and Administration, Information Technology

Main business areas Information Technology, Product Development, Business Intelligence

Qualifications

Highest degree Bachelor

Certifications earned 2

Member since

June 2026

Last update

October 2026

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Frequently asked questions

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Ingo is based in Frankfurt am Main, Germany.

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

Ingo has at least 31 years of experience. During this time, Ingo has worked in at least 34 different roles and for 28 different companies. The average length of individual experience is 1 year and 11 months. Note that Ingo may not have shared all experience and actually has more experience.

Based on recent experience, Ingo would be well-suited for roles such as: Analytics, Reporting and Publication Platform (MVP), Modularization of Offer Components (ModA) in Vendo.

Ingo's most recent position is Analytics at BaFin - Federal Financial Supervisory Authority Frankfurt.

In recent years, Ingo has worked for BaFin - Federal Financial Supervisory Authority Frankfurt.

Ingo is most experienced in industries like Banking and Finance, Government and Administration, and Information Technology. Ingo also has some experience in Automotive, Transportation, and Telecommunication.

Ingo is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Ingo also has some experience in Business Intelligence, Finance, and Project Management.

Ingo has recently worked in industries like Government and Administration.

Ingo has recently worked in business areas like Information Technology and Business Intelligence.

Ingo holds a Bachelor in Audio Engineering from SAE.

Ingo has 2 certificates. These include: PRINCE2 (certified practioneer) and Certified Professional for Software Architecture.

Ingo will be available from May 2027.

Daily rate distribution

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<€480 €480-640 €800-960 €960-1120 €1120+

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Average rates for similar positions

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Daily rate avg. 899 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

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Median rate 924 €

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.