Linux Expert in Vienna

• Organizational Change Management as part of a group-wide, supranational sales transformation, serving as the core of a broad restructuring of business-critical areas, with end-to-end control of the change process and long-term embedding and securing the future readiness of sales.
• Initiation and end-to-end steering of the sales transformation program, including in-depth analysis to identify, assess, and strategically involve all relevant stakeholders, making tactical use of their specific business interests and influence.
• Conducting advanced, detailed change impact analyses to predict the organizational effects of the transformation, deriving a tailored change strategy, and developing a change roadmap and a change story as the core narrative of the campaign.
• Designing and implementing an integrated communication and action plan to ensure maximum transparency, effectively manage unspoken expectations, and actively guide a change process that is clear and understandable for all stakeholders.
• Active management of all transformation phases, including the setup of robust monitoring mechanisms for continuous progress analysis and forecasting based on recommended and jointly defined KPIs.
• Establishing an agile analysis and adjustment cycle to continuously assess the effectiveness of implemented measures, identify challenges early, and fine-tune the change strategy in time.
• Conducting precise gap analyses to identify skill gaps in the sales team in the context of the new strategic direction, and deriving and developing targeted qualification measures (e.g. coaching, training).
• Comprehensive reduction of resistance to change by turning opposing stakeholder mindsets into proactive change-driving change ambassadors.
• Deep and sustainable realignment of sales structures and processes in full alignment with the company’s overall goals.
• Qualitative and quantitative improvement of sales efficiency and performance as a direct result of the implemented transformation initiatives and capability-building programs.

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

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.

• 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)

• 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

• Development of a charging station for electric vehicles
• Tools: C/C++/Matlab/Simulink
• Development and testing of functional software with various communication buses

Delivered a digital, non-profit neighborhood platform to connect older adults with volunteers for practical support and social companionship. Responsible for business analysis, requirement definition, platform evaluation and delivery of a locally scalable service solution focusing on AI-driven enhancements, data-based optimization and clear market positioning. Evaluated several low-code/business platforms including Odoo and Glide Apps and assessed monday.com as a CRM-like option before selecting Glide Apps for implementation. Implemented a non-native mobile and desktop application with Glide Apps and the web presence with WordPress. Tasks

• 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 core user journeys, business processes and operational workflows for older adults, volunteers and administration
• Translating business requirements into functional requirements for profiles, task management, coordination, communication and notifications
• Guiding the implementation of the non-native mobile and desktop application in Glide Apps as well as the web presence in WordPress
• Preparing the business side for future AI-powered features such as intelligent matching and data-based optimization
• Ensuring compliance with GDPR requirements Results
• Successfully delivered digital support platform connecting older adults with volunteers
• Solid foundation for market positioning through market, target group and competitor analyses
• Delivered a functional non-native mobile and desktop application with Glide Apps and a supporting web presence with WordPress
• Established foundation for scaling and AI-based further development

Development of a structured framework and comprehensive guidelines for documenting business and audit processes in a regulated financial environment. Support for the standardization of process documentation to improve transparency, consistency, and traceability across all operational workflows. Contribution to defining documentation standards, templates, and governance principles for internal process management and audit readiness.

• Planning and monitoring sprints and holding the scheduled meetings

• Analyzing and resolving issues in the development process

• Error analysis, bug management and correction in individual process steps

• Stakeholder management

• Documentation and improvement of the development process

• Tools: JIRA, Confluence

• Designed and implemented simulation software for electrical power systems, focusing on dynamic element interaction and user interface optimization using C++, wxWidgets, Windows, and Visual Studio.

• Replacement of original Dopix documents and modules into the Quadient document environment
• Extension of document logic