Ralf B. - Implementation of a Middleware Solution

Großhansdorf, Germany

Experience

Jun 2023 - Oct 2023

5 months

Implementation of a Middleware Solution

Utility provider

Analysis of the existing software landscape
Tool selection with evaluation of MuleSoft Anypoint and Talend Open Studio
Evaluation of integration services on the Azure platform
Setup of Azure App Services
Proof-of-concept implementation of offer data import with MuleSoft and Spring Boot in Azure App Service

Jan 2021 - Dec 2024

4 years

Interface redesign and development as part of an SAP S/4HANA migration

Transport company

Bug fixing and optimization of legacy systems
Analysis of existing system interfaces and their redesign
Setup of SAP BTP (IAM, deployment pipelines, logging, etc.)
Guidance for new developers in creating Spring Boot microservices
Migration of legacy SAP interfaces into Spring Boot microservices
Development of asynchronous interfaces using Protobuf and RabbitMQ
Introduction, hypercare, bug fixing, and performance optimization

Feb 2018 - Dec 2020

2 years 11 months

Migration of legacy backend application to an OpenShift cloud environment

Logistics company

Bug fixing and enhancements of existing backend applications
Re-implementation of backend applications in OpenShift, Kubernetes, and Docker environments using Spring Boot, REST, and Postgres
Creation of deployment pipelines with Jenkins
Design and implementation of application UIs with VueJS
Provisioning of application metrics with Prometheus and Grafana
Performance tuning in high-load systems
Development of stored procedures and database migration
Refactoring of existing legacy code
Operational responsibility for the migrated microservices

Aug 2013 - Jan 2018

4 years 6 months

Process automation and integration of external service providers; corporate customer portal

Insurance company

Integration of multiple external service providers via secure web services or SFTP connections
Implementation of B2B transformations using Apache Camel
Automation of insurance processes with Camunda
Creation of web services with JAXB
Implementation of PDF generation with iText
Rollout and bug fixing
Re-implementation of an existing legacy application
Integration of the new application into the existing IT landscape
Data migration
Lead development, project management, coordination of external service providers
Rollout, bug fixing, and continuous improvement

Jan 2013 - Jun 2013

6 months

Web-based sales system

Financial service provider

Development of modules for retirement planning, finance, goals, and documentation center
Development of custom GUI components
Refactoring, troubleshooting, and bug fixing

Jun 2009 - Dec 2012

3 years 7 months

Claims System

Insurance Company

Coached team members in Java and Swing-based frameworks
Developed components for quick claims capture, claims history, payment processing, and the participation business
Performed refactoring, troubleshooting, and bug fixing

Sep 2008 - May 2009

9 months

Master Data Applications

Logistics Group

Enhanced and fixed bugs in the existing customer profile application
Developed a new Web 2.0 frontend for the Quality Office of the Unique Customer Identification application
Developed a new SOAP web service for the Quality Office web frontend

Dec 2007 - Aug 2008

9 months

Customer Relationship System

Non-Profit Organization

Expanded and revised the client and server components for person merge and resubmission
Developed performance-critical batch jobs
Developed new job export and import components
Created and optimized Hibernate queries
Performed bug fixing and troubleshooting

May 2007 - Nov 2007

7 months

Data Warehouse

Bank

Designed and implemented key and market data import
Implemented supplementary processes and business methods
Enhanced the deletion process for faulty data deliveries
Designed and implemented deployment with Ant
Developed process control with shell scripts
Performed bug fixing and troubleshooting

Oct 2006 - May 2007

8 months

Point of Sale Backend

Trading Company

Developed parameter maintenance for the POS backend system
Created country-specific extensions
Extended existing standard GUI components
Performed bug fixing and troubleshooting

Apr 2006 - Sep 2006

6 months

Customer Relationship System

Non-profit organization

Development of client and server components for addresses, personal files, projects, and person merging
Writing Hibernate queries
Refactoring business object communication and server-side exception handling
Reviewing design documentation and framework components
Bug fixing and troubleshooting

Aug 2005 - Mar 2006

8 months

Credit Counterparty Risk System (Basel II)

Investment Bank

Implementation of logging using Log4J
Connecting Java components to Sybase servers via Hibernate
Design and implementation of the build and deployment process using Apache Ant
Stored procedure programming
Database performance tuning
Korn shell scripting
Overall process control with CA Autosys
Troubleshooting and error debugging

Aug 2002 - Jul 2005

3 years

Composite Policy Management System

Insurance company

Technical redesign of the Swing user interfaces
Design and implementation of the policy management component for industrial insurance
Design and implementation of the building policy management component
Design and implementation of the broker component
Design and implementation of the commission component
Troubleshooting and error debugging

Jan 2002 - Jul 2002

7 months

Corporate Customer Internet Portal

Bank

Redesign of the object model
Design of the persistence architecture in a three-tier environment
Implementation of the persistence layer using WebGain TOPLink
Performance tracing and tuning
Code reviews
JSP development

Apr 2001 - Dec 2001

9 months

Life insurance field service system

Insurance company

Implementation of Riester pension products
Creating automated test routines with QARun
Implementation of client-server communication between Smalltalk and Java using RMI

Jan 2001 - Mar 2001

3 months

Inventory Management System

Media Company

Design and development of the booking component
Object-oriented analysis and design
Data modeling
Implementation
Review of the history concept

Sep 2000 - Dec 2000

4 months

Coaching and Training

Consulting Company

Training in object-oriented analysis and design
Coaching and implementation of an application with modules for commission accounting, employee controlling and liquidity planning

Nov 1999 - Aug 2000

10 months

Composite Policy Administration System

Insurance Company

Design and development of the tariff calculation core
Smalltalk batch programming
Performance tuning
Data model optimization

Nov 1998 - Sep 1999

11 months

Composite Field Service System

Insurance Company

Design and implementation of the selection editor
Design and implementation of the concept for concurrent database access
Performance tuning
Troubleshooting and debugging errors

Jul 1998 - Oct 1998

4 months

Pension Fund Management

Software Vendor

Coaching on PMSmicado frameworks
Technical project management
Main development

Dec 1997 - Jun 1998

7 months

Composite Policy Management System

Insurance company

Extending a persistence framework to access DB2 for MVS through a transaction monitor (IMS)
Validating the frameworks to be used
Designing and overseeing the development process using ENVY

Mar 1997 - Nov 1997

9 months