GitHub Experts in Vienna

I build. I advise. I think in systems. After years leading digital transformation at scale — Accenture, BP, Lidl — I made a deliberate choice: trade platform dependency for structural independence. My focus is at the intersection of AI systems, product strategy, and venture thinking. I work with operators and founders who want to move fast without losing control — of their data, their stack, their direction.

• 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.

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.

• Teaching & presenting
• Communication
• Effectively communicate complex technical topics to non-technical audiences through lectures
• Guided non-technical students from zero knowledge to confidently understanding and applying algorithms to achieve business outcomes

• 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

• Shaping service management framework as part of head office of RBI
• Service owner overseeing IT cloud services, accountable for overall quality, lifecycle, and success
• Managing customer relationships and satisfaction for 10 business units ensuring smooth business continuity and operations
• Single point of contact and service/process owner providing T-shaped expertise in IT domains, cloud platforms and services (AWS, Azure, Kubernetes, Salesforce, ServiceNow, Jira, Orca, CRM, GitHub, SFMC)
• ITSM/ITIL implementation and mentoring including design, definition, mapping, and execution
• Change and release management, UAT/test assurance, major incident management, SDLC management
• Managing regulatory and audit requirements, DORA, GDPR, ITPF compliance and reporting
• Acting as a point of escalation for complex customer issues, resolving conflicts, fostering a customer-centric culture
• People management: leading and managing service delivery teams, DevOps, vendors, and third-party teams
• Cross-tribe service delivery and contract management: KPIs, SLAs, OLAs, RPO, RTO, BCM/SCM management
• Agile/Scrum process delivery governance, stakeholder communication, and budget/cost management

• Accurate handling of customer transactions under time pressure, including cash and register processing with high care
• Reliable, consistent performance in a fast-paced, customer-focused environment; strengthened organization and multitasking skills

• Design workshop curricula for software engineers and technical leads on AI-enabled engineering and on adopting AI tools effectively.
• Technical talk, 17th TestIstanbul Conference, October 2026: "What If We Tested the Tester?", on how AI amplifies the tester's judgement, blind spots included.
• Built and run the company website and online course platform (WordPress, PHP, JavaScript) with Claude Code and Cursor, plus a Playwright test suite that checks the live site's pages, links and sign-up flow.
• Built Write Check, a Chrome extension backed by a local Node.js service that scores any text box for clarity and AI-sounding phrasing, falling back across Gemini, Kimi, GPT and OpenRouter when a provider fails.
• Built a Python video pipeline that turns my online course into short narrated videos: script, text-to-speech, captions and rendering, with a review gate before each episode.
• Work under a written protocol for AI coding agents (CLAUDE.md): a definition of done written as checks before the work starts, tests that fail before they pass, and independent reviewer agents that check each claim of the coder agents against its source.
• Author of The Maintenance Trap (Level Up newsletter, May 2026), on developer productivity: why high-performing engineers get pulled into maintenance work and how to make the ROI case for fixing it.

• 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.

• Pivoted the company into data-driven and AI-powered energy optimization solutions for microgrids, energy communities, and grid operators.

• I offer project-based short and long-term freelance services for Linux and open source projects
• DevOps/SecOps/Sysadmin for Linux operating systems with a strong focus on idempotent automation and high availability
• Migration projects: on-site to cloud (and vice versa) and cloud-to-cloud migrations between providers
• Development environments: standardizing customers' development and sysadmin workstations/clients
• Digital sovereignty solutions (independent of hyperscalers): Linux desktop (Ubuntu/SUSE), mail and communications (groupware mail/calendar/contacts), file sharing and collaboration (Nextcloud)

Completed project assignment · 12/2025 – 06/2026

• Current state & interviews: Analysis of team structure, roles, responsibilities, dependencies, knowledge distribution, seniority, and agile maturity through one-on-one, team, and stakeholder interviews.
• Team diagnosis & risks: Structured assessment of skill level, ownership, willingness to learn, collaboration, communication, and team fit; analysis of knowledge concentration, risks for operations, team, and product, as well as external perception with root causes and improvement suggestions.
• Target-state options & impact analysis: Development of structural options and assessment of their effects on collaboration, delivery speed, responsibilities, quality, and knowledge distribution.
• Organizational design & alignment: Introduction of measures to distribute knowledge and responsibility, improve collaboration with departments and external teams, define the stakeholder communication framework, and provide recommendations for involvement in the technology relaunch.
• Management decision basis: Documentation of implemented measures and their effects; option catalog with risks, consequences, and scenarios for team and product, plus a final overall recommendation. The scoped analysis and optimization assignment was successfully completed at the end of June 2026.

Current tasks

• Scrum Master / Agile Coach for two complex teams: Further development of agile collaboration and self-organization, facilitation of Scrum events, and impediment management.
• Delivery & team development: Improvement of requirements and refinement processes, clarification of roles, responsibilities, and workflows, as well as further development of the team and knowledge distribution.
• Cross-functional alignment: Coordination between development, Product Owner, Requirements Engineering, UX/UI, architecture, and stakeholders.
• Cross-area analysis: Examination of communication paths, process deviations, dependencies, processing times, and status transparency, with derivation of concrete improvement measures.