Stephan R.-ICT Architect/Programmer, DevOps, Design, Implementation, Testing, Documentation
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Experience
ICT Architect/Programmer, DevOps, Design, Implementation, Testing, Documentation
PostFinance AG
Delivery of a Customer Engagement & Loyalty Solution in the cloud (AWS) and integration into the existing on-premise system landscape.
Technology: 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: Delivery of a cross-product rewards program for retail banking customers, integrated into online and mobile banking; building both practical and emotional customer loyalty; increasing profitability and loyalty; encouraging cross-selling and upselling; improving customer satisfaction over the long term and positively influencing the company’s image.
DevOps, Design, Implementation, Testing, Documentation
SV Informatik GmbH
Automated, parameterized provisioning of Oracle Fusion Middleware environments.
Technology: 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: The solution enables automated, parameterized provisioning of Oracle Fusion Middleware environments in various configurations (Weblogic, Data Integrator, Service Bus, SOA-Suite) for different applications.
Architect/Programmer, Design, Implementation, Testing, Documentation
Rhätische Bahn AG
Implementation of interfaces between SAP S/4HANA and various legacy systems.
Technology: Java SE/EE, Quarkus, Apache Camel, Apache ActiveMQ, Redhat OpenShift/Kubernetes, SAP IDoc, JMS, REST, SOAP, SoapUI, CI/CD, Bitbucket, Git, Maven, Bamboo, Junit, Mockito, WireMock, Confluence, Jira (SCRUM), IntelliJ, draw.io
Result: Interfaces between SAP S/4HANA and various legacy systems based on Java SE/EE, Quarkus, Apache Camel and Redhat OpenShift/Kubernetes.
Senior Software Engineer - Design, Implementation, Testing, Documentation
EnBW Energie Baden-Württemberg AG
Integration of a cloud-based Customer Relationship Management (CRM) system into the existing system landscape (cloud and on-premise).
Technology: Java SE/EE, AWS CloudFormation, Terraform, AWS SAM, CI/CD, AWS Lambda, Amazon DynamoDB, Amazon S3, Amazon API Gateway, Amazon Cognito, Amazon CloudWatch, AWS Step Functions, Amazon EventBridge, AWS Secrets Manager, Amazon Route 53, REST, SoapUI, Gradle, JUnit, Mockito, WireMock, Confluence, Jira (SCRUM), IntelliJ
Result: Freely scalable and fault-tolerant microservices in the AWS cloud.
AWS Select Partner - Design, Implementation, Testing, Documentation
Amazon Partner Network
Development of two service packages for "Landing Zone for AWS - Security Governance at Scale - Quick Start - Consulting and Implementation".
Technology: AWS Control Tower, AWS Organizations, AWS Service Catalog, AWS Single Sign-on, AWS Config, AWS CloudFormation, Amazon CloudWatch, AWS CloudTrail, AWS Identity and Access Management, Amazon Simple Storage Service, Amazon Simple Notification Service, AWS Lambda, AWS Step Functions, AWS CodeCommit, AWS CodePipeline, Amazon Simple Queue Service, AWS Key Management Service
Result: Two service packages for a practical introduction to a secure, scalable multi-account AWS environment; foundation for an AWS Landing Zone through a pre-built PoC concept and a portfolio of different extensions.
Design, Implementation, Testing, Documentation, DevOps
SV Informatik GmbH
Automated, parameterized provisioning of Oracle SOA Suite 12.2.1.3 environments.
Technology: Oracle SOA Suite 12.2.1.3, Oracle FMW Infrastructure 12.2.1.3, Oracle HTTP Server 12.2.1.3, Oracle Enterprise Database 12.2.0.1, WLST (IaC), Python, Linux, bash, IaC, DevOps, CI/CD, Git, Jira (SCRUM), Confluence
Result: The solution enables automated, parameterized provisioning of complete Oracle SOA Suite environments for various applications.
ICT Architect, Design, Implementation, Documentation, DevOps
Deutsche Bahn AG
Migration of highly available Oracle Service Bus environments (Dev, Test, Acceptance, Production) from version 11.1.1.9 OnPremise to version 12.2.1.3 in the AWS Cloud, automated, replicable, and versioned.
Technology: Oracle Service Bus 12.2.1.3, WebLogic Server 12.2.1.3, JMS Messaging, Saltstack, WLST (IaC), Python, Linux, bash, GitLab, IaC, DevOps, CI/CD, SOAP/REST, Jira (SCRUM), Confluence, AWS CloudFormation, AWS IAM, Amazon S3, Amazon EC2, Amazon EBS, Amazon EFS, Amazon Data Lifecycle Manager, Amazon RDS, Prometheus, ELK
Result: Automated, replicable, and versioned migration of Oracle Service Bus environments; foundation for a future CI/CD deployment pipeline.
Design, Installation, Configuration, Testing, Documentation, Training
Centris AG
Provisioning of a highly available Oracle Enterprise Manager Cloud Control environment (MAA Level 3) for monitoring and life-cycle management of more than 10'000 targets.
Technology: Oracle Enterprise Manager Cloud Control 13c Release 2, EMCLI, Python, Linux, bash, SSL/TLS, IaC, DevOps, CI/CD
Result: Company-wide monitoring and life-cycle management of applications, services, Oracle Fusion Middleware, and databases, as well as the underlying server systems.
ICT Architect, Design, Implementation, Testing, Documentation
Deutsche Bahn AG
PoC for automated provisioning of Oracle Service Bus 12.2.1.3 environments.
Technology: Oracle Service Bus 12.2.1.3, Oracle FMW Infrastructure 12.2.1.3, Oracle HTTP Server 12.2.1.3, Oracle Enterprise Database 12.2.0.1, WLST (IaC), Python, Linux, bash, IaC, DevOps, CI/CD, Git, SOAP/REST, Jira (SCRUM), Confluence
Result: Proof of functionality and documentation of all integration and provisioning steps as a basis for automation.
ICT Architect, Implementation, Testing, Documentation, IaC
Deutsche Bahn AG
Company-wide, automated, parameterized provisioning of Oracle Service Bus 12c and Oracle Weblogic Server 12c installations and domains using SaltStack.
Technology: Oracle Service Bus 12.2.1.2, Oracle 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, parameterized provisioning of complex SOA topologies and significant improvements in efficiency and quality.
ICT Architect, Design, Implementation, Documentation, Testing
Deutsche Bahn AG
PoC for integrating Oracle Service Bus with SAP R/3®.
Technology: Oracle Service Bus 12.2.1.2, SAP R/3®
Result: Functional proof and documentation of all steps for integration and deployment as a basis for automation.
Design, Implementation, Testing, Documentation
Centris AG
PoC to demonstrate the functionality of Oracle Fusion Middleware OEMCC: Multiple Domain Discovery; Compare Configurations; Provision Home and Domains; Scaling Up/Out Clusters; Deploy/Undeploy Java-Apps; Credential Management; Configure Domain, Cluster, Server, Machine.
Implementation using GUI and EMCLI based on scenarios: User Defined Deployment Procedures (JDK); Fusion Middleware Profile - Oracle Home/WLS Domain; Parameterization of Deployment Procedures; Deploying/Redeploying/Undeploying Java EE Application; Scale Up/Scale Out WLS Cluster.
Technology: 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: Proof of feasibility, reproducibility, and stability.
ICT Architect, Design, Implementation, Documentation, Testing
Deutsche Bahn AG
Design and implementation of a test environment, and testing of approx. 30 EAI Message Exchange Patterns (JMS, SOAP/HTTP, MQ – One Way, Req./Resp. sync./async., Pub./Sub., Claim Check) with regard to transactional behavior (XA) in simulated failure scenarios.
Technology: Oracle Service Bus 12c, Oracle Weblogic Server 12c, WLST (IaC), Python, Java SE/EE, JMS, SOAP/REST, MQ 7.5, XA, HA
Result: Proof and conditions for fully meeting all requirements for transaction security and high availability of the SOA infrastructure.
ICT Architect, Design, Documentation, Testing
Deutsche Bahn AG
Developed component design guidelines for Oracle Service Bus; designed and carried out test cases to ensure high availability of a messaging infrastructure based on Oracle Weblogic Server.
Technology: Oracle Service Bus 11g, Oracle Weblogic Server 12c, JMS, high availability, load tests, The Grinder
Result: Consistent design for quality assurance, reusability, scalability, and maintainability; proof of the high availability of the messaging infrastructure.
Design, Implementation, Documentation, Testing
Centris AG
Automated declaration and configuration of additional parameters for the JSR-88 Deployment Plan for different environments.
Technology: Oracle Weblogic Server, JSR-88, XML, XSL
Result: The procedure enables automated configuration without modifying the deployment descriptors.
Conceptualization
Baloise Versicherung AG
Architecture for processing conjunctive dependencies in asynchronous processes through programmatic replacement and use of the JMS Unit-of-Work functionality of Oracle Weblogic Server.
Technology: Oracle Weblogic Server Platform, JMS
Result: Savings and simplification in the processing of asynchronous processes.
Conceptualization, Installation, Configuration and Integration
intern
Private cloud: Network Attached Storage, Collaboration Server, Application Server, VPN access, Replication, Failover, Disaster Recovery.
Technology: 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.
Conceptualization, Installation and Integration
Bundesamt für Informatik und Telekommunikation BIT
Operating concept and provision of the infrastructure for Application Performance Management.
Technology: dynatrace Diagnostics 3.1, Microsoft SQL Server
Result: Provision of the dynatrace Diagnostics Server for integration, acceptance and production, and delivery of the operating concept.
Coordination, Facilitation and Delivery
Bundesamt für Informatik und Telekommunikation BIT
Delivered two 4-day dynatrace Diagnostics basic courses for 17 participants from operations, integration, testing and development.
Technology: dynatrace Diagnostics 2.6
Result: Provided basic knowledge for using dynatrace Diagnostics.
Coordination, Facilitation and Support
Bundesamt für Informatik und Telekommunikation BIT
Analyzed errors in a production system to identify sporadically long response times using a POC.
Technology: dynatrace Diagnostics 2.6
Result: Precise and verifiable identification of the causes of errors without interrupting operations; reduced effort to 10%; targeted elimination of the causes.
Design, Implementation, Integration, Testing, Documentation
Federal Office of Information Technology, Systems and Telecommunication BIT
Operating concept and automated provisioning of 150 Oracle Weblogic Server Platform instances, taking high availability requirements into account.
Technology: Oracle Weblogic Server Platform, Oracle Weblogic Node Manager, VMWare ESXi, SuSE Linux Enterprise Server, WLST (IaC), Python, Linux, bash
Result: Reduced provisioning effort from several days to 30 minutes; efficient SSH and SSL key trust management.
Consulting and design, development
BEKB | BCBE
Migration of the BEA Weblogic Server Platform from 8.1 to 9.x and J2SE 1.4 to 5.0; automation of domain configuration provisioning and deployments.
Technology: BEA Weblogic Server Cluster 8.x/9.x, J2SE 1.4/5.0, Java EE 1.3/1.4, Oracle RDBMS, Sun Solaris, Red Hat Enterprise Linux, WLST (IaC), Python, Linux, bash
Result: Successful, on-time migration of all applications and the platform.
Analysis, design
Bank Vontobel AG
High-level design for company-wide consolidation of J2EE application server technology.
Technology: J2SE 1.4, J2EE 1.3, Sun Solaris
Result: Complete, on-time delivery of all agreed artifacts.
Analysis, installation, design, implementation, support
Deutsche Telekom MMS GmbH
Migration of the BEA Weblogic Server Platform from 6.1 to 8.1; analysis of optimization potential; SNMP system management; JVM GC optimization; troubleshooting.
Technology: J2SE 1.4, J2EE 1.3, BEA Weblogic Server Cluster 6.1/8.1, Sun Solaris 9.0, HP LoadRunner
Result: Complete, on-time delivery of all agreed artifacts.
Instructional design, delivery
Deutsche Telekom MMS GmbH
BEA Weblogic Server Administration training (2×4 days) in preparation for the BEA 8.1 Certified Administrator exam.
Technology: J2SE 1.4, J2EE 1.3, BEA Weblogic Server Cluster 8.1, Sun Solaris 9.0
Result: Complete, on-time delivery of all agreed artifacts.
Web service implementation, installation, configuration, consulting
Deutsche Post AG
Implemented web services for a B2C application; installed and configured a BEA Weblogic Server Cluster; advised on technology, architecture and design.
Technology: J2SE 1.4, J2EE 1.3, SQL, JAX-RPC, SOAP/REST, Design Patterns, BEA Weblogic Server Cluster 8.1, Nodemanager, Oracle RDBMS, Sun Solaris 9.0
Result: Delivered all agreed artifacts in full and on time.
Analysis and documentation
Polish Ministry of Agriculture
Analyzed errors in a production system (4,000 users) to identify increasing memory usage and functional limitations.
Technology: J2SE 1.4, J2EE 1.3, BEA Weblogic Server Platform 7.0, Oracle Database 9i, Wilytech Introscope 5.0
Result: Delivered all agreed artifacts in full and on time.
Installation, configuration and documentation
Sun Microsystems Inc.
Configured highly available J2EE Application Server clusters for a data center (integration, test, production).
Technology: BEA Weblogic Server Platform 8.1, Nodemanager, Apache Webserver 2.0, Sun Solaris 9.0
Result: Delivered all agreed artifacts in full and on time.
Analysis, optimization
Česká spořitelna a.s.
Analyzed errors and optimized a production system (700,000 users): fixed memory leaks; tuned JVM/GC; improved response times by 10% without downtime.
Technology: J2SE 1.3, J2EE 1.2, BEA Weblogic Server 6.1, Oracle Database 9i, Wilytech Introscope 5.0, HPjtune, HPjmeter
Result: Error-free application and improved performance.
Instructional design, delivery
DFS Deutsche Flugsicherung GmbH
J2EE technology seminar: presentations, discussions and exercises on J2EE fundamentals, complex programming, Web Services, SOA, SOAP, WSDL, JAX-RPC and BEA Weblogic Server Platform administration.
Technology: J2SE 1.4, J2EE 1.3, Webservices, BEA Weblogic Server Platform 8.1
Result: Delivered all agreed artifacts in full and on time.
Implementation of Enterprise Service Bus, Integration
Deutsche Post AG
Implementation of an Enterprise Service Bus based on the BEA Weblogic Server Platform; integration of IBM MQ-Series with BEA Weblogic.
Technology: J2EE 1.3, JAAS, LDAP, BEA Weblogic Server Platform 7.0, IBM MQ-Series 5.1
Result: Complete and on-time delivery of all agreed deliverables.
Design, Implementation
Droege Group AG
Implementation of key components of a Knowledge Management System: import/export of legacy flat files; dynamic transformation and formatting of XML report data into PDF; data exchange between the frontend and CMS.
Technology: J2SE 1.3, HTTP, Servlet, JAXP, XML, XSLT, XSL-FO, PDF, SVG, Oracle Database 9i
Result: Complete and on-time delivery of all agreed deliverables.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Transportation, Government and Administration, Banking and Finance, Telecommunication, and Insurance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Operations, Quality Assurance, Product Development, and Marketing.
Languages
Education
University of Applied Sciences for Scientific Instrument Engineering “Carl Zeiss”
Diplom-Ingenieur (FH) · Precision Engineering/Electronics · Jena, Germany
Certifications & licenses
AWS Certified Advanced Networking – Specialty
AWS Certified DevOps Engineer – Professional
HashiCorp Certified Terraform Associate
AWS Certified: SAP on AWS – Specialty
AWS Certified Developer – Associate
AWS Certified Solutions Architect – Professional
Oracle WebLogic Server 12c Certified Implementation Specialist
Certificate BEA Weblogic Adminstrator
Sun Certified Enterprise Architect for Java
Certificate BEA Weblogic Developer
Statistics
Experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Stephan is based in Langenthal, Switzerland.
Stephan speaks the following languages: German (Native), English (Advanced), Russian (Elementary).
Stephan has at least 24 years of experience. During this time, Stephan has worked in at least 30 different roles and for 20 different companies. The average length of individual experience is 1 year and 9 months. Note that Stephan may not have shared all experience and actually has more experience.
Based on recent experience, Stephan would be well-suited for roles such as: ICT Architect/Programmer, DevOps, Design, Implementation, Testing, Documentation, DevOps, Design, Implementation, Testing, Documentation, Architect/Programmer, Design, Implementation, Testing, Documentation.
Stephan's most recent position is ICT Architect/Programmer, DevOps, Design, Implementation, Testing, Documentation at PostFinance AG.
In recent years, Stephan has worked for PostFinance AG, SV Informatik GmbH, Rhätische Bahn AG, and EnBW Energie Baden-Württemberg AG.
Stephan is most experienced in industries like Information Technology, Transportation, and Government and Administration. Stephan also has some experience in Banking and Finance, Telecommunication, and Insurance.
Stephan is most experienced in business areas like Information Technology, Operations, and Quality Assurance. Stephan also has some experience in Product Development and Marketing.
Stephan has recently worked in industries like Information Technology, Transportation, and Banking and Finance.
Stephan has recently worked in business areas like Information Technology, Operations, and Marketing.
Stephan holds a Bachelor in Precision Engineering/Electronics from University of Applied Sciences for Scientific Instrument Engineering “Carl Zeiss”.
Stephan has 13 certificates. Among them, these include: AWS Certified Advanced Networking – Specialty, Certified SAFe® 6 Agilist, and AWS Certified DevOps Engineer – Professional.
The availability of Stephan needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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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 6 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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