Stephan R. - Deployment/Integration of a Customer Engagement & Loyalty Solution

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Langenthal, Switzerland

Experience

Feb 2024 - Oct 2024

9 months

Deployment/Integration of Customer Engagement & Loyalty Solution

PostFinance AG

Deployment of a Customer Engagement & Loyalty Solution in the AWS Cloud and integration into the existing on-premise system landscape
Role: ICT architect/developer, DevOps, design, implementation, testing, documentation
Technologies: AWS EKS (Kubernetes), Helm, AWS EC2, AWS S3, PostgreSQL, SAP GLIF, RabbitMQ, Git, GitLab, ArgoCD, GitOps, CI/CD, Terraform, HashiCorp Vault, JFrog Artifactory, Splunk, Prometheus, Grafana, Linux, bash, IntelliJ, draw.io, Confluence
Result: Cross-product loyalty program for retail customers embedded in online and mobile banking; increased profitability and loyalty; promotion of cross- and upselling; long-term improvement of customer satisfaction and positive impact on the company's image.

Sep 2022 - Oct 2025

3 years 2 months

Infrastructure as Code - Oracle Fusion Middleware

SV Informatik GmbH

Automated, parameterized deployment of Oracle Fusion Middleware environments of all types (Oracle WebLogic, Data Integrator, Service Bus, SOA-Suite)
Role: DevOps, design, implementation, testing, documentation
Technologies: Oracle SOA-Suite 12.2.1.4, Oracle FMW Infrastructure 12.2.1.4, Oracle Data Integrator 12.2.1.4, Oracle HTTP Server 12.2.1.4, Oracle Enterprise Database 12.2.0.1, HashiCorp Vault, WLST (IaC), Python, Linux, bash, IaC, DevOps, CI/CD, IntelliJ, Git, draw.io, Confluence
Result: Enables fast and reproducible deployment of parameterized Oracle Fusion Middleware environments.

Jan 2022 - Feb 2023

1 year 2 months

APIs for the integration of legacy systems with SAP S/4HANA

Rhätische Bahn AG

Implementation of interfaces between SAP S/4HANA and various legacy systems
Role: Architect/developer, design, implementation, testing, documentation
Technologies: Java SE/EE, Quarkus, Apache Camel, Apache ActiveMQ, Red Hat OpenShift/Kubernetes, SAP IDoc, JMS, REST, SOAP, SoapUI, CI/CD, Bitbucket, Git, Maven, Bamboo, JUnit, Mockito, WireMock, Confluence, Jira (SCRUM), IntelliJ, draw.io
Result: Functional interfaces based on Java SE/EE, Quarkus, Camel, and OpenShift/Kubernetes.

Jun 2021 - Dec 2021

7 months

APIs and microservices for integrating a CRM system

EnBW Energie Baden-Württemberg AG

Integration of a CRM system into existing cloud and on-premise landscapes for energy trading
Role: Senior Software Engineer, design, implementation, testing, documentation
Technologies: Java SE/EE, AWS CloudFormation, Terraform, AWS SAM, CI/CD, AWS Lambda, Amazon DynamoDB, S3, API Gateway, Cognito, CloudWatch, Step Functions, EventBridge, Secrets Manager, Route 53, REST, SoapUI, Gradle, JUnit, Mockito, WireMock, Confluence, Jira (SCRUM), IntelliJ
Result: Scalable, fault-tolerant microservices in the AWS Cloud.

Jan 2021 - Apr 2021

4 months

Landing Zone for AWS - Security Governance at Scale

Amazon Partner Network

Development of two service packages for AWS Landing Zone consulting and implementation
Role: AWS Select Partner, design, implementation, testing, documentation
Technologies: AWS Control Tower, AWS Organizations, Service Catalog, Single Sign-on, Config, CloudFormation, CloudWatch, CloudTrail, IAM, S3, SNS, Lambda, Step Functions, CodeCommit, CodePipeline, SQS, KMS
Result: Two hands-on packages for secure, scalable multi-account AWS environments, including a PoC concept and customizable extensions.

Sep 2019 - Dec 2020

1 year 4 months

Automated, parameterized provisioning Oracle SOA Suite

SV Informatik GmbH

Automated, parameterized provisioning of complete Oracle SOA Suite 12.2.1.3 environments
Role: design, implementation, testing, documentation, DevOps
Technologies: Oracle SOA Suite 12.2.1.3, FMW Infrastructure 12.2.1.3, HTTP Server 12.2.1.3, Enterprise Database 12.2.0.1, WLST (IaC), Python, Linux, bash, IaC, DevOps, CI/CD, Git, Jira (SCRUM), Confluence
Result: Enables fast, consistent provisioning of various applications on Oracle SOA Suite.

Jan 2019 - Dec 2019

1 year

Migration Oracle Service Bus from on-premise to AWS Cloud

Deutsche Bahn AG

Migration of highly available Oracle Service Bus environments (11.1.1.9 on-premise) to version 12.2.1.3 in AWS Cloud, automated and versioned
Role: ICT architect, design, implementation, documentation, DevOps
Technologies: Oracle Service Bus 12.2.1.3, WebLogic Server 12.2.1.3, JMS, SaltStack, WLST (IaC), Python, Linux, bash, GitLab, DevOps, CI/CD, SOAP/REST, Jira (SCRUM), Confluence, AWS CloudFormation, IAM, S3, EC2, EBS, EFS, Data Lifecycle Manager, RDS, Prometheus, ELK
Result: Replicable migration and preparation for CI/CD deployment pipeline (DevOps).

Jan 2018 - Dec 2018

1 year

Provisioning Oracle Enterprise Manager Cloud Control

Centris AG

Provisioning a highly available Oracle Enterprise Manager Cloud Control 13c Release 2 environment (MAA Level 3) for monitoring and life-cycle management of >10,000 targets
Role: design, installation, configuration, testing, documentation, training
Technologies: Oracle EM Cloud Control 13c R2, EMCLI, Python, Linux, bash, SSL/TLS, IaC, DevOps, CI/CD
Result: Company-wide monitoring and life-cycle management of applications, middleware, databases, and server systems.

Jan 2018 - Dec 2018

1 year

PoC IaC Oracle Service Bus

Deutsche Bahn AG

Execution of a proof of concept for automated provisioning of Oracle Service Bus 12.2.1.3 environments
Role: ICT architect, design, implementation, testing, documentation
Technologies: Oracle Service Bus 12.2.1.3, FMW Infrastructure 12.2.1.3, HTTP Server 12.2.1.3, Enterprise Database 12.2.0.1, WLST (IaC), Python, Linux, bash, IaC, DevOps, CI/CD, Git, SOAP/REST, Jira (SCRUM), Confluence
Result: Demonstrated all steps for integration and provisioning as a basis for automation.

Jan 2017 - Dec 2017

1 year

Automated provisioning Oracle Service Bus using SaltStack

Deutsche Bahn AG

Company-wide, automated, parameterized provisioning of Oracle Service Bus 12c and WebLogic Server 12c installations and domains using SaltStack
Role: ICT architect, implementation, testing, documentation, IaC
Technologies: Oracle Service Bus 12.2.1.2, WebLogic Server 12.2.1.2, Apache ZooKeeper, Apache Kafka 2.11, SOAP/REST, Apache SaltStack, WLST (IaC), Python, Linux, bash
Result: Fast, environment-specific provisioning of complex SOA topologies to increase efficiency and quality in all environments.

Jan 2016 - Dec 2016

1 year

PoC Integration Oracle Service Bus with SAP R/3

Deutsche Bahn AG

Conducted a PoC for integrating Oracle Service Bus with SAP R/3
Role: ICT architect, design, implementation, documentation, testing
Technologies: Oracle Service Bus 12.2.1.2, SAP R/3
Result: Functional proof and documentation of all steps as a basis for automation.

Jan 2015 - Dec 2015

1 year

Provisioning/Management of Oracle Fusion Middleware OEMCC

Centris AG

PoC to demonstrate features: Multiple Domain Discovery, Compare Configurations, Provision Home and Domains, Scale Up/Out Clusters, Deploy/Undeploy Java apps, Credential Management, configuration of domain/cluster/server/machine
Implementation via GUI and EMCLI using selected scenarios (User Defined Deployment Procedures, Fusion Middleware Profile, parameterization, scale up/out)
Role: design, implementation, testing, documentation
Technologies: OEMCC 12.1.0.4, ODB 11.2.0.4, WLS 12.1.1.0.0, adcubum SYRIUS, Chef, EMCLI, Python, Linux, bash, Confluence
Result: Demonstrated feasibility, reproducibility, and stability.

Jan 2015 - Dec 2015

1 year

XA Test of EAI Message Exchange Patterns

Deutsche Bahn AG

Designed and implemented a test environment for about 30 EAI message exchange patterns (JMS, SOAP/HTTP, MQ – one-way, req./resp. sync./async., pub./sub., claim check)
Role: ICT architect, design, implementation, documentation, testing
Technologies: Oracle Service Bus 12c, Oracle WebLogic Server 12c, WLST (IaC), Python, Java SE/EE, JMS, SOAP/REST, MQ 7.5, XA, HA
Result: Demonstrated compliance with all requirements for transaction safety and high availability of the SOA infrastructure.

Jan 2014 - Dec 2014

1 year

Component Design Guidelines for OSB and HA Messaging

Deutsche Bahn AG

Developed guidelines for component design for Oracle Service Bus and test cases to ensure high availability of a JMS-based messaging infrastructure
Role: ICT architect, design, documentation, testing
Technologies: Oracle Service Bus 11g, WebLogic Server 12c, JMS, high availability, load tests with The Grinder
Result: Unified design for quality assurance, reusability, scalability, and maintainability; demonstrated compliance with all high availability requirements.

Jan 2013 - Dec 2014

2 years

Automatic Extension of JSR-88 Deployment Plan

Centris AG

Automated declaration and configuration of additional parameters in the JSR-88 deployment plan for different environments without modifying deployment descriptors
Role: design, implementation, documentation, testing
Technologies: Oracle WebLogic Server, JSR-88, XML, XSL
Result: Enables automated adjustments of deployment plans for Java EE applications.

Jan 2013 - Dec 2013

1 year

Asynchronous Communication Architecture

Baloise Insurance AG

Architectural design for processing conjunctive dependencies of asynchronous processes using the JMS Unit Of Work of the WebLogic Server JMS implementation
Role: Design
Technologies: Oracle WebLogic Server Platform, JMS
Result: Cost savings and simplification in asynchronous process handling through configuration-based implementation.

Jan 2011 - Dec 2011

1 year

Private Cloud

Internal

Design, installation, configuration, and integration of storage, collaboration server, application server, VPN, replication, failover, and disaster recovery
Role: Design, installation, configuration, integration
Technologies: IBM iDataplex, VMware vSphere, Red Hat Enterprise Linux, illumos ZFS, VMware Zimbra Collaboration Server, Oracle GlassFish Server
Result: Flexible, location-independent infrastructure for communication, administration, development, integration, testing, and production.

Jan 2009 - Dec 2009

1 year

Error Analysis in Production System

Federal Office for Information Technology and Telecommunications BIT

Coordination and support of a PoC to identify causes of sporadic long response times in production
Role: Coordination, moderation, support
Technologies: dynatrace Diagnostics 2.6
Result: Precise identification and documentation of root causes without interrupting operations; reduced effort from 46 to 3 working days; basis for targeted issue resolution.

Jan 2009 - Dec 2009

1 year

Application Performance Management Infrastructure

Federal Office for Information Technology and Telecommunications BIT

Operational concept and provision of a dynatrace Diagnostics server infrastructure in the existing IT landscape
Role: Design, installation, integration, operational concept creation
Technologies: dynatrace Diagnostics 3.1, Microsoft SQL Server
Result: Provision of the Diagnostics server for integration, acceptance, and production, including the operational concept.

Jan 2009 - Dec 2009

1 year

Application Performance Management Training

Federal Office for Information Technology and Telecommunications BIT

Coordination, moderation, and delivery of two 4-day basic courses on dynatrace Diagnostics
Role: Coordination, moderation, delivery
Technologies: dynatrace Diagnostics 2.6
Result: Provided fundamental knowledge to 17 participants from operations, integration, testing, and development.

Jan 2008 - Dec 2012

5 years

Automated Provisioning of Oracle WebLogic Server Platform

Federal Office for Information Technology and Telecommunications BIT

Operation concept and automation of the provisioning of 150 Oracle WebLogic Server Platform instances including patches
Role: Design, implementation, integration, testing, documentation
Technologies: WebLogic Server Platform, Node Manager, VMware ESXi, SUSE Linux Enterprise Server, WLST (IaC), Python, Linux, bash
Result: Reduced provisioning time from several days to 30 minutes; automated SSH and SSL key trust management.

Jan 2006 - Dec 2007

2 years

Migration of BEA WebLogic Server Platform

BEKB | BCBE

Migration of BEA WebLogic Server Platform from 8.1 to 9.x and J2SE from 1.4 to 5.0; automation of domain configurations and deployments
Role: Consulting, design, development of automation processes
Technologies: WebLogic Server Cluster 8.x/9.x, J2SE 1.4/5.0, Java EE 1.3/1.4, Oracle RDBMS, Solaris, Red Hat Linux, WLST (IaC), Python, Linux, bash
Result: Successful, on-time migration of all applications and platforms.

Jan 2006 - Dec 2006

1 year

J2EE Infrastructure Consolidation

Bank Vontobel AG

Outline design for enterprise-wide consolidation of J2EE application server technology
Role: Analysis, implementation proposals, presentation of possible approaches
Technologies: J2SE 1.4, J2EE 1.3, Solaris
Result: Complete, on-time delivery of all agreed artifacts.

Jan 2005 - Dec 2005

1 year

Migration of BEA WebLogic Server

Deutsche Telekom MMS GmbH

Migration of WebLogic Server Platform from 6.1 to 8.1; design and implementation of SNMP system management; JVM GC tuning under load
Role: Analysis, installation, configuration, design, implementation, troubleshooting support
Technologies: J2SE 1.4, J2EE 1.3, WebLogic Server Cluster 6.1/8.1, Solaris 9.0, HP LoadRunner
Result: Complete, on-time delivery of all agreed artifacts.

Jan 2005 - Dec 2005

1 year

BEA WebLogic Server Administration Training

Deutsche Telekom MMS GmbH

Instructional development of customized training materials and exercises; conducting a 2x4-day training course to prepare for the BEA 8.1 Certified Administrator exam
Role: Instructor, training manager
Technologies: J2SE 1.4, J2EE 1.3, WebLogic Server Cluster 8.1, Solaris 9.0
Result: Complete and on-time delivery of all agreed artifacts.

Jan 2004 - Dec 2005

2 years

Implementation of Web Services

Deutsche Post AG

Implementation of web services for a B2C application; installation and configuration of WebLogic Server clusters; technology and design consulting
Role: developer, consultant
Technologies: J2SE 1.4, J2EE 1.3, SQL, JAX-RPC, SOAP/REST, design patterns, WebLogic Server 8.1, Node Manager, Oracle RDBMS, Solaris 9.0
Outcome: on-time delivery of all artifacts; BEA reference project.

Jan 2004 - Dec 2004

1 year

Error Analysis – Production System – 4,000 Users

Polish Ministry of Agriculture

Analysis and documentation of root causes for sporadic high disk usage and resulting functional limitations
Role: analyst, documenter
Technologies: J2SE 1.4 (JFC/Swing), J2EE 1.3 (EJB, JMS), WebLogic Server 7.0, Oracle 9i, Wilytech Introscope 5.0
Outcome: complete, on-time delivery of all agreed artifacts.

Jan 2004 - Dec 2004

1 year

High-Availability J2EE Application Server Cluster

Sun Microsystems Inc.

Installation, configuration, and documentation of a high-availability J2EE application server cluster for integration, testing, and production
Role: implementer, documenter
Technologies: WebLogic Server Platform 8.1, Node Manager, Apache Web Server 2.0, Solaris 9.0
Outcome: complete, on-time delivery of all agreed artifacts.

Jan 2004 - Dec 2004

1 year

Error Analysis and Optimization – Production System – 700,000 Users

Česká spořitelna a.s.

Analysis and elimination of memory leaks; optimization of JVM/GC behavior; improvement of response times by 10%
Role: analyst, optimizer, tester
Technologies: J2SE 1.3 (JFC/Swing), J2EE 1.2 (EJB, JMS, JSP), WebLogic 6.1, Oracle 9i, Introscope 5.0, HPjtune, HPjmeter
Outcome: restored error-free application and 10% faster response times without downtime.

Jan 2003 - Dec 2003

1 year

J2EE Technology Seminar

DFS Deutsche Flugsicherung GmbH

Preparation and delivery of a seminar on J2EE basics, advanced programming, WebLogic Server administration, and web services (SOA, SOAP, WSDL, JAX-RPC)
Role: seminar leader
Technologies: J2SE 1.4, J2EE 1.3, web services, WebLogic Server 8.1
Outcome: complete and on-time delivery of all agreed artifacts.

Jan 2003 - Dec 2003

1 year

Implementation of Enterprise Service Bus

Deutsche Post AG

Implementation of an Enterprise Service Bus based on the WebLogic Server platform; integration of IBM MQ-Series with WebLogic
Role: Implementer
Technologies: J2EE 1.3 (EJB, MDB, JMS), JAAS, LDAP, WebLogic Server 7.0, IBM MQ-Series 5.1
Result: Complete and on-time delivery of all agreed artifacts.

Jan 2002 - Dec 2002

1 year

Implementation of Knowledge Management System

Droege Group AG

Design and implementation of import/export for legacy flat files; dynamic transformation and formatting of XML report data into PDF; data exchange between frontend and CMS
Role: Design, Implementation
Technologies: J2SE 1.3, HTTP, Servlet, JAXP, XML, XSLT, XSL-FO, PDF, SVG, Oracle 9i
Result: Complete and on-time delivery of all agreed artifacts.