Linux Experts in Austria

Organizational Change Management for the strategic setup of a hybrid GBS rollout as part of a global, AI-driven Finance Transformation. End-to-end management of the OCM architecture in a highly complex on-, near-, and offshore partner setup [IN, PL, RO]. Successful completion of Phase 1 (Initial Strategy) and strategic pausing by the Executive Board after the early disclosure of critical vendor-side OPEX risks

• Systemic Baseline Assessment & Stakeholder Diagnostics: Evaluation of the global organization and analysis of the process landscape across 21 countries [AT, DE, CH, FR, UK, SI, RO, UA, RU, US, CD, CN, AR, MX, ZA, IN, JP] to precisely determine change requirements

• Architecting the OCM Strategy & Master Roadmap: Independent development of a comprehensive, AI-centered Change Roadmap for end-to-end management of all change initiatives across every project phase

• Data Quality & AI Agent Risk Mitigation: Auditing of Process Data Repositories (Celonis analysis); prevention of the ingestion of 58% synthetic training data to safeguard AI model reliability amid geopolitical supply chain tensions

• GBS Vendor BAFO Triage & Contractual Commitment: Critical review of Tier-1 vendor pitches and contractual commitment to a reduced Non-STP rate (from 7% to 4%) to avoid extreme manual rework with a planned FTE reduction (-63%)

• Executive Enablement & Board Alignment: Design of the GBS Transformation Executive Board Deck to strategically enable C-level executives and transparently present completely overlooked AI tokenization costs

• Targeted Change Communications & Engagement: Design and development of audience-specific communication measures to align the highly diverse, globally distributed stakeholder network

• Adoption Velocity & Resistance Measurement: Engineering of quantitative measurement tools (Pulse Check Survey) using Behavioral Dyads to identify resistance based on data and ensure sustainable success measurement

Results:

• Avoidance of disruptive misallocations: Stopping the ingestion of 58% synthetic AI-agent training data after discovering only 42% compatibility with existing processes, preventing critical GBS cascade errors
• Significant OPEX & effort reduction: Reduction of the Non-STP rate in Tier-1 vendor BAFOs from 7% to 4% alongside an impending 63% Finance-FTE reduction; avoidance of thousands of time-consuming manual correction processes
• 100% Delivery of the OCM architecture & ROI protection: Delivery of all OCM artifacts (Change Roadmap, Comms Plan, Executive Board Deck, Pulse Check Survey) and protection of ROI by identifying incalculable LLM runtime token costs

Sole responsibility for the design, development and deployment of the bilingual Qwik platform eventvideo.at. Responsible for frontend performance optimization (PageSpeed 97/100/100/100), SEO engineering with Schema.org, integration of Google Search Console and IndexNow, and building the GitHub Actions CI/CD pipeline. Requirements gathering and technical implementation.

• Performance Engineering: Google PageSpeed Score 97/100/100/100 (Performance / Accessibility / Best Practices / SEO) through frontend optimization (lazy loading, thumbnail-first, lightweight media integration)
• Full-Stack Web Development: Sole responsibility for development with the Qwik.js framework from frontend to deployment for the bilingual (DE/EN) platform eventvideo.at, marketing personalized, fully automated participant videos for sports events
• Qwik.js Resumability Architecture: Server-side rendering with minimal JavaScript hydration overhead; the page remains immediately interactive even with extensive video and event content, without a full-page load.
• API Integration: Google Search Console API and IndexNow API for automated indexing and SEO monitoring
• SEO Engineering: Schema.org Structured Data implementation for rich snippets and improved search engine visibility
• Mobile-First with minimal bundle size: CSS3 layout without UI framework overhead, consistently lean use of resources for excellent PageSpeed on desktop and mobile.
• GitHub Actions CI/CD: Automated build, test and deployment pipeline for continuous integration

Technologies: Qwik.js Framework, TypeScript, JavaScript, Internationalization (i18n DE/EN), GitHub Actions CI/CD, Google Search Console API, IndexNow API, Schema.org, Google PageSpeed Insights, Lazy Loading, CSS3, Responsive Design

• Planning and implementation of IT infrastructures for customers
• Automation of provisioning with AWS CloudFormation and AWS CDK
• Monitoring and optimization of cloud environments and the entire IT infrastructure
• Technical support and troubleshooting for infrastructure issues
• Collaboration with development teams on CI/CD processes

Refactoring and improving core APIs; implementing client change requests. Setting up metrics, traces, and logs monitoring infrastructure to support operations. Designing GitOps deployment and infrastructure as code. Applications and systems configuration in ArgoCD and Openshift. Confluence documentation of design, approach, and solution. Tech Stack: Java 8 & 21, Spring framework, JSP, JavaScript, Bash scripts, SQL, Grafana Stack, OpenTelemetry, Docker, DB2, Maven, Kubernetes Kompose.

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

• Develop AWS-based components connecting Python backend services to React/TypeScript frontends.
• Improve database queries and application workflows for document processing and screening.
• Evaluate LLM retrieval and document-review workflows as part of the product stack.

• Design and implementation of new functionalities in the areas of Lifecycle Management (LCM), Role Management (RLM) and Access Governance

• Adjustment of the company-wide Segregation of Duties (SoD) matrix to ensure regulatory and internal compliance requirements

• Further development and configuration of recertification processes

• Creation and adaptation of custom workflows, rules and tasks in SailPoint IdentityIQ (BeanShell, XML, Java)

• Use of static code analysis with SonarQube to ensure code quality and compliance with defined development standards

• Regular code reviews within the development team to ensure quality, share knowledge and follow clean code principles

• Work in an agile Scrum team with daily communication, sprint planning and reviews

• Coordination with testers, test managers and business departments to ensure quality and smooth production rollout

• Active involvement in release planning and deployment coordination, including test preparation, cutover activities and rollback strategies

• Analysis and sustainable resolution of issues in the IAM production environment (2nd- and 3rd-level support)

• Reproduction of complex errors, identification of root causes and implementation of lasting fixes

• Creation of technical analyses and recommendations for operations and further development

• Development of a power distribution solution for motorhomes
• Extension and adaptation of the existing prototype software for some parts of the power distribution system
• Development of missing firmware for other modules of the system
• Automation of the firmware build process through continuous integration (CI)
• Technologies used include C, Jira, Confluence, Git, GitHub, STM32, ESP32, CAN, CANopen, UART, and Zephyr

• Custom software development
• Web hosting
• Support
• DevOps
• Technologies: C#, Node.js, Web, Windows, Linux, SQL, MS365, Azure, AWS

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.

Delivery of a digital, non-profit neighborhood platform connecting older people with volunteers for practical support and social companionship. Responsibility for business analysis, requirements definition, platform evaluation and delivery of a locally scalable service solution, with a focus on AI-supported development, data-driven optimization and clear market positioning. Evaluation of several low-code/business platforms, including Odoo and Glide Apps, as well as assessment of monday.com as a CRM-related option, before selecting Glide Apps for implementation. Implementation of a non-native mobile and desktop application with Glide Apps and the website with WordPress. Responsibilities

• Gathering, analyzing and structuring business requirements for the product and service model
• Conducting market, target group and competitor analyses to position the offering
• Evaluating and selecting suitable low-code/business platforms for implementation
• Defining key user journeys, business processes and operational workflows for older people, volunteers and Administration
• Translating business requirements into requirements for profiles, task management, coordination, communication and notifications
• Supporting the implementation of the non-native mobile and desktop application in Glide Apps and the website in WordPress
• Preparing future AI-supported functions such as intelligent matching and data-driven optimization
• Ensuring compliance with GDPR requirements Results
• Successfully delivered digital support platform connecting older people with volunteers
• Solid foundation for market positioning through market, target group and competitor analyses
• Implemented functional non-native mobile and desktop application with Glide Apps and accompanying website with WordPress
• Created foundation for scaling and AI-based further development

• Incident analysis and troubleshooting
• Process improvements in collaboration with the business teams
• Joint design and implementation of requirements with the business department and architecture
• Planning and execution of quality management

WFC is a web-based application and allows extensions in the form of TypeScript libraries.

• Programming and scripting languages: JavaScript, TypeScript, ControlScript from WinCC OA

• Creation of test scenarios, manual test cases and test data using boundary value analysis and equivalence partitioning
• Execution of functional and non-functional tests (manual with Postman and web application, automated with WebDriver, JUnit and NUnit)
• Setup, automation and maintenance of the Test Automation Framework with Java, Spring Boot, Selenium and Cucumber in IntelliJ (system, regression, smoke, UI and integration tests for web frontend and SOAP API backend interfaces)
• Automation of backend NUnit test cases in Visual Studio
• Test management: development and implementation of the test strategy and test plans, test coordination, quality responsibility and prioritization of risk-based tests, as well as documentation management in Confluence
• Detailed analysis and quality assurance of requirements
• Creation and maintenance of Jenkins pipelines, quality assurance during build & deployment
• Close cooperation with business analysts, developers, testers and test management
• Identification, creation and tracking of errors/defects, as well as careful test documentation
• Reporting of test results and defect reports
• Monitoring of test processes and continuous improvement
• Verification of test data and test results in a PostgreSQL database in pgAdmin
• Support with effort estimates and backlog prioritization
• Analysis and debugging of development code

System environment: Java, JUnit, Spring Boot, Selenium, Cucumber, JavaScript, Jenkins, C#, NUnit, Postman, Bitbucket, Confluence, Jira, xRay, pgAdmin, PostgreSQL, SonarQube, Maven, IntelliJ, Visual Studio, CI/CD, SOAP API interfaces