OpenShift Experts in Austria

Owned the end-to-end architecture and the transition for the fourth licence period of the UK National Lottery: a complete technology stack replacement delivered against a hard regulatory deadline. Produced the end-to-end high-level architecture that served as the delivery baseline for the replacement of all major IT service components including infrastructure

Target architecture across two geo-redundant UK data centres: multiple VMware ESX clusters, OpenShift, MS SQL Server clusters, Oracle Exadata, integrated with AWS-hosted components and a retailer WAN over VSAT, DSL and LTE

Business continuity concept and geo-redundant high availability design

Review and approval authority over all low-level designs, application and infrastructure: network security, Oracle RAC, VMware, OpenShift, SQL clustering, geo-redundancy

Designed and implemented full hardware and network separation between test environments and staging/production

SME for third-party security audits against CIS benchmarks and NIST standards: preparation, execution, findings analysis, remediation prioritisation

Delivered software deployment to 45,000 retail terminals with minimal downtime, plus data migration from the incumbent end-to-end landscape to the new architecture

Transitioned 45,000 POS terminals and 19 million online players on time with no critical incidents

Owned the integrated transition plan for the full replacement of the lottery technology stack: work packages, milestones, dependencies and critical path across parallel technical sub-projects

Central organisational interface between internal IT leads, technical workstream leads, multiple external vendors and client executive stakeholders

Planned and led migration and cutover of live, regulated national infrastructure, including 80+ bare metal servers running VMware ESX, Microsoft VMs across several Active Directory domains, Linux VMs, OpenShift on Linux, 2 SANs, 2 Oracle Exadata systems, AWS components and a retailer WAN

Ran 4 full cutover dress rehearsals ahead of the 2 major go-live releases

Governed all changes through the ITIL change process and CAB; ran risk, issue and escalation management with regular status reporting to the Program Director and client's CTO

Onboarded the internal cyber security team and acted as architecture SME in pre-deployment security audits for client and internal security teams, including prioritisation and remediation of findings

Joined the programme as Enterprise Architecture Lead from May to September 2022, gaining detailed knowledge of the target infrastructure before taking overall delivery responsibility; after go-live, supported the delivery teams through the warranty phase

Project Tech Stack: Python, AWS, Azure, FastAPI, openai, pandas, unittest/pymock

Achievements:

• Engineered automated data extraction pipelines to transform complex Excel datasets into structured formats via LLM-driven workflows.
• Architected a generative slide-deck engine that translates natural language prompts into formatted presentation assets.
• Integrated advanced LLM capabilities with the OpenAI Response API, implementing sophisticated tool-calling and structured output logic.
• Developed and containerized scalable backend microservice using FastAPI, Docker, and OpenShift to host and serve agentic skills.

Implementation and operation of OpenShift / Kubernetes solutions for customers, focusing on aspects such as storage, virtualization, security, logging, monitoring, and high availability. Support with application containerization and modernization.

• Backend / Microservices Developer, DevOps, Test Automation
• ~100 Developers, ~10 Teams, per Team: 1 PO, 1 ScrumMaster, 1UX, 1 Developers, 1 Tester
• .net core 8, 9, C#
• Microservices, Clean Architecture, MediatR, CQRS
• GraphQL, REST, SDL
• Azure DevOps, CI / CD pipelines, Azure Service Bus, Rabbit-MQ, Kafka, Azure App Configuration, Azure KeyVault, Azure Kubernetes AKS
• Splunk, dashboards, custom metrics, Elastic-Search, Kibana (ELK)
• Azure SQL Databases, Azure Cosmos DB
• Architecture decisions, event governance, COP (Backend, DevOps, FrontEnd, Test Automation)
• AI, Copilot, creating Test Templates
• Scheduler, Hangfire, Quartz
• Automated Unit and Integration Tests
• Automated E2E Tests, Playwright Test Automation, BDD, Gherkin, Cucumber
• Shipment tracking
• GIS, GPS data, geofence, geo search, position tracking, asset positions
• Jira, Confluence
• Focus on high-performance message-oriented architecture (~xx e6 messages / month / service)
• Structured logging, Serilog, OTel, Splunk, Application Monitoring
• Integration of different position data sources (GPS-based data) into AzureDataLake

Focus:

• Developing and providing Cloud Native Courses
• Architecture Consulting for Platform Engineering and Cloud Native
• Supporting Teams and People on their Cloud Native Journey

Delivered Trainings:

• Kubernetes Fundamentals - From Pods to Ingresses; 2 Days
• Platform Engineering on GKE - Operators, GitOps, Gateway API, Policy Management, Storage; 2 Days
• Platform Engineering on AKS - GitOps, External Secrets, Policy Management, Ingress/Gateway API and Storage; 4 Days

Currently In Progress:

• Platform Engineering Basic / Advanced on OpenShift - OpenShift/Kubernetes Basics, GitOps, External DNS, External Secrets; Multi-Step Program with 2 Course Blocks (3 and 2 Days) and self-paced projects

• Architected and deployed a highly available, multi-tenant Kubernetes platform on Google Kubernetes Engine (GKE) for business-critical microservices.
• Designed and implemented a comprehensive Infrastructure-as-Code strategy using Terraform for managing GKE clusters, networking (VPCs, Subnets), and IAM policies.
• Engineered optimized storage solutions for stateful workloads (MongoDB) using GKE PersistentVolumes, enhancing performance and data resiliency.
• Established a full-stack observability framework using Google Cloud Monitoring, Logging, Prometheus, and Grafana.

• Developed a CRM solution using the Vaadin UI framework
• Implemented a digital audit workflow for efficient handling of review and approval processes
• Supported structured management of customer and project data and ensured compliance
• Focused on usability, process automation, and integration into existing systems

• Implemented and maintained 443 automated test cases with a 99% pass rate (441/443)
• Enabled CI for test automation: automated runs on review/merge, reporting via Xray
• Introduced accessibility and performance checks and established them in reporting
• Served as QA lead in daily operations with stand-ups, Kanban progress tracking, prioritization, and targeted task distribution
• Handled defect triage and stakeholder communication with daily triage, QA status analysis, and actionable recommendations
• Developed and maintained a stable regression suite for CRM/Salesforce flows (UI/E2E and near-API validations)
• Integrated CI/CD using Jenkins pipelines with Groovy (IaC)
• Maintained QA documentation, test conventions, and processes in Confluence, aligned across the team
• Conducted Salesforce Einstein chatbot testing with intent/topic validation and output checks, and used Robot Framework/Python suites for continuous quality monitoring
• Technology stack: Jira, Xray, Confluence, Jenkins, Groovy, Git, Java, Selenium, Playwright, Cucumber, TypeScript, Postman, REST, Salesforce, Google Cloud, Lighthouse, Evinced, Scrum/Kanban, BDD (Gherkin)

• I am responsible for providing solution architecture and technical assistance for a migration initiative aimed at transitioning to a new core banking system.
• The project involves replacing in-house development with a commercially available off-the-shelf core banking system operated as SaaS on AWS.
• Duties encompass solution design, technical coordination, supporting development teams, and providing IT support and troubleshooting.
• Managing over 10 global vendors and partners is crucial to project success.
• Technologies: VMWare ESXi, AWS, EKS Kubernetes, Mastercard Payment Transaction Service, Avaloq, A1 Telekom Austria infrastructure, CheckPoint FW, F5, Site-to-Site VPNs, PingID, Futurae SDK, Airlock, UC4/Automic, Firebase, iOS/Android lifecycle management, AWS IAM, AWS AppStream, AWS S3, AWS Transfer Family, QlikView, OpenAPI.

• Migrating from VMware to OpenShift Virtualization, 40+ workstreams / projects in parallel (Small- to Medium Sized VM Operators / Critical Factory Workload Owners / Large-Scale Data Center Operators)

• Custom anonymized research data analyzer, providing insights and facilitating data-driven decision-making.
• Designed and developed back- and frontend.
• Delivered end-to-end solution.
• Accelerated research timeline by 2 months.

• Planning, monitoring, coordination, and documentation of the output project as part of the policy migration to the UNIQA Insurance Platform.
• Planning and design of new requirements.
• Designing a consistent, maintainable, and scalable application architecture.

Further development, configuration and operation of DOXiS, a document management system at a large financial services company. Development of a document interface as a REST API to integrate with third-party systems using the Java Spring Framework. Programming client scripts in Visual Basic, as well as workflow and agent scripts in Groovy.