Go Experts in Dortmund

KEY PROJECTS

Since 05/2023 | Bank | Senior Cyber Security Consultant (external)

• Advising and guiding the system owners in creating and further developing IT security concepts
• Coordinating and tracking the remediation of findings from reviews and audits
• Advising on the implementation of regulatory requirements for information security

10/2023 – 02/2024 | Fintech | Project Manager (external)

• Project management to close various audit gaps in the field of information security
• Conceptual design and implementation of an information security management system based on ISO/IEC 27001
• Creation and further development of ISMS documents and processes

• Architected and deployed end-to-end machine learning pipelines across classification and prediction datasets, ensuring robustness and reproducibility through MLOps best practices.
• Contributed directly to LLM model output accuracy improvement by designing and engineering specialised prompts grounded in end-to-end ML and SciML pipeline logic.
• Developed training data for large language models by formulating coding problems that models could not resolve and subsequently documenting the correct solutions.

• Production master data: bill of material, work center, routing and production version, customizing, FIORI
• Optimization and organization of production
• gATP and aATP training
• Classical MRP, pMRP and MRP Live
• Various planning strategies in PP
• Workflow and MDM tables and fields
• Metadata in SAP, fields and their mapping
• Creation of metadata in Excel
• LSMW basics: data cleansing with Excel + deduplication
• LTOM or Migration Cockpit
• Training in APO, later as ePP/DS master data, heuristics and optimizer CIF integration models
• Production orders and capacity planning, reconciliation and evaluation
• Net requirements calculation, lot sizes and pegging, detailed planning board, product view in PP/DS
• KUT test or migration test
• Digitization of maintenance plans, orders, checklist documents
• Technical objects, equipment, bills of material and their customizing
• Measuring points and serial numbers customizing
• Work and maintenance planning, cycles and different dimensions

• Challenging consulting services as well as interim, transformation, program and project management
• Program Manager for dormakaba International Holding AG: responsible for the SAP rollout in the German subsidiary consisting of 16 projects for Sales, Service, Operation and Finance, preparation through a fit template pre-project, development and formulation of end-to-end business processes, guidance and coaching of the business in use case and technical concept creation, introduction of integration test concept and implementation of integration tests
• Senior consultant for AGRAVIS Raiffeisen AG: specification of ITSM processes Incident and Release Management based on ITIL, examination of implementation options with SAP Solution Manager, managing the cutover of an SAP project
• Interim manager for bofrost DL GmbH & Co. KG: analysis and redesign of the existing business process model, management of strategic PMO including control of project portfolio management (up to 40 projects), project initiation process management, coaching of project managers, comprehensive reporting, ensuring economic viability of all projects, direct reporting to the advisory board, guidance for process and ITSM areas, management of strategic program including greenfield approach, system landscape redesign, end-to-end process introduction, CRM POC and platform provider beauty contest, development of target specifications using LEAN A3, design and implementation of POC with two platform providers
• Program Manager/PMO/PPM for Henkel KGaA global SCM consolidation: management of international template team for SAP landscape redesign, management of strategic partner Accenture
• Program Manager/PMO/PPM for Henkel KGaA migration from SAP BW to Microsoft BI: complete development lifecycle, transition of services to Accenture and hosting from HP to IBM, implementation according to PMI-based and agile standards, management of 20 projects, turnaround program setup, root cause analysis, contract amendments, governance, reporting, controlling, coaching of up to 60 employees, 20 MEUR budget, all milestones achieved on time and within budget
• Program Manager/PMO M&A IT for Henkel KGaA: SAP rollout and infrastructure transition worldwide after acquisition, carve-out management, onboarding of approx. 5 000 new SAP users, consolidation of servers and data centres, management of 30 projects across WEU, CEE, LA, NA and AP, PMI-based implementation, governance setup, coaching of up to 150 employees, 85 MEUR budget, 300 people worldwide, international tender management with providers such as Accenture, IBM, HP and Cisco, program completed on time, on quality and below budget
• Interim Manager for Bertelsmann AG: strategic IT sourcing program for Corporate CIO including six projects, planning, controlling, reporting, coaching, quality management, stakeholder management, contract transitions, development of system to verify savings, achieved 20% above planned savings
• Interim Manager IT Governance for Henkel KGaA: professionalisation of IT service management, audit and development of PMI-based project management process with group adaptations, group-wide rollout of ITIL processes incident, problem and change management
• Agile project for ALDI-Sued: finalisation and implementation of demand management process for IT requirements with interfaces to other processes and service catalogue
• Senior Consultant for hagebau IT GmbH: analysis of business processes, conception and implementation of NDA, RFI and RFP for Managed IT Services tender with EUR 30 million volume, transition planning of two data centres to Atos managed services, development of service catalogue and cost allocation model
• Interim Manager for Henkel KGaA: development of international resource management system for global IT to improve cost and capacity control, agile planning, controlling and scope management, realization of 25% capacity reserves
• Interim Manager for Netrada GmbH: professionalisation of IT service management, conception and creation of 16 SLAs, process analysis and documentation, service quality objectivisation reducing ad hoc workload by approx. 20%
• Senior Consultant for Saudi Telecom: introduction of PMI-based project management process, development of PMO, coaching of employees, support in acquisition of customer projects by applying the introduced method

Manufacturing intelligence platform with enterprise workflows, RAG, real-time AI assistant features, and multi-repository backend architecture.

• Built and extended production AI/backend services with Django, DRF, FastAPI, GraphQL, Celery, PostgreSQL, MySQL, Redis, and WebSockets across a modular multi-repository platform.
• Contributed to ARIS V2, a real-time manufacturing AI assistant using LangChain, LangGraph, MCP tool orchestration, planning/execution flows, OpenAI, AWS Bedrock, Qdrant, and Elasticsearch/OpenSearch-backed retrieval.
• Supported rollout expansion from ARIS V1 in 4 of 17 client production plants to ARIS V2 currently active in 13 of 17 plants, increasing real-world deployment coverage to more than 50% of the client footprint.
• Worked on document-grounded RAG functionality including ingestion, OCR, chunking, embeddings, indexing, retrieval, reranking, and grounded answer generation for industrial workflows.

Stack: Python, Django, DRF, FastAPI, LangChain, LangGraph, GraphQL, Celery, WebSockets, OpenAI, AWS Bedrock, Qdrant, Elasticsearch/OpenSearch, PostgreSQL, MySQL, Redis, Docker.

• Delivered MVP-focused full-stack architecture for a health-sector client: Vite/React frontend, backend services on Google Cloud Run, and Supabase for database plus IAM/authentication.
• Supported product requirements engineering and prioritized cost-aware workload placement, implementing browser-side/edge computation where feasible before moving logic to backend services.

• Complete greenfield rebuild across the whole stack — built AI-native: backend in Go and NestJS, PostgreSQL (CNPG) on K3s with GitOps/Terraform; frontend on Angular 22, zoneless.
• Orchestrated coding agents (e.g. Claude Code, Cursor) across the entire lifecycle — architecture, implementation, testing, reviews, documentation — driven by Specification-Driven Development (SDD).
• “Bruno” — LLM commentator persona backed by RAG and MCP for a personality that stays consistent across all generations (match previews, post-match reports, his own virtual bets).

Angular 22 (zoneless, without Zone.js), Claude Code, Claude Code Skills, CNPG, Cursor, Design Tokens (Spec for Code), Docker, Gherkin, Git, GitLab, GitOps, Go, Google Gemini, Grafana, Hetzner Cloud, K3s, Keycloak, Kubernetes, Lighthouse, LLM Integration, Model Context Protocol (MCP), NestJS, Node.js, NPM, Playwright, PostgreSQL, Prometheus, RAG, REST, Specification-Driven Development (SDD), Structured Outputs, Terraform, TypeScript, Vitest

• Technical design, prioritization, and hands-on implementation of AI automation, conversational AI, voice AI, and private AI solutions.
• Translation of business requirements into system architecture, conversation/workflow logic, APIs, data flows, and production-ready AI workflows.
• Development of backend and integration components with Python/FastAPI, PostgreSQL/pgvector, Redis, REST APIs, webhooks, and background jobs.
• Design and implementation of RAG architectures with local/private LLMs, embeddings, document processing, semantic search, and controlled access to company knowledge.
• Prompt engineering for LLM and voice/conversational AI applications; iterative optimization based on real processes, system responses, and quality requirements.
• Practical work with ElevenLabs and its APIs in a voice AI project, as well as technical evaluation and integration of voice AI components.
• Deployment and operation of Docker-based systems on Linux with Nginx, CI/CD, monitoring/logging, backup/restore, and reproducible deployment processes.

• Product Owner for the Digital Delivery team
• Company-wide Bosch digitalization project for software deliveries
• Technologies: SAP EMS, JFrog, Revenera
• Conducting PI Plannings

• Develop vision and business goals
• Define and implement strategy for different markets
• Build customer focus into processes
• Rebuild methods in lead generation

Conventional Paradigm Test (CPT) – AI Evaluation & LLM Research

Development of an experimental evaluation approach to examine “paradigmatic closure” in Large Language Models — that is, the question of how far LLMs can recognize the basic assumptions, values, and limits of the paradigms within which they generate answers.

Design and testing of an additional approach to classic AI benchmarks that does not primarily measure factual correctness or task performance, but instead examines a model’s ability to recognize alternative perspectives, make implicit assumptions visible, and reflect on the limits of its own answer or interpretation framework.

Focus areas: development of evaluation criteria and test questions · LLM evaluation and comparative model analysis · prompt and response analysis · qualitative classification of model answers · study of epistemic compression and value leakage · benchmark and literature research · development of structured assessment and analysis methods

As part of CPT, existing AI evaluation approaches and benchmarks were analyzed, and a minimalist test protocol was developed that classifies model answers by response patterns such as DIRECT, CLARIFY, PLURALIST, REFUSE, and META-AWARE. TruthfulQA was used as the basis for experimental application and comparison with existing reference answers.

Technologies & Methods: Large Language Models (LLMs) · Generative AI · Prompt Engineering · AI Evaluation · TruthfulQA · Benchmark Analysis · Human-in-the-Loop Evaluation · Qualitative Content Analysis · Research & Literature Review

As Managing Director of Ullertec GmbH, my focus is on advising and supporting companies in the areas of occupational health and safety, workplace safety, and operational safety organization.

As a specialist for occupational safety, I support companies with safety-related services in accordance with DGUV Regulation 2, the creation and further development of risk assessments, operating instructions, and occupational safety organizations, as well as with site inspections, safety committee meetings, and the implementation of legal requirements.

Ullertec GmbH, based in Bochum, has established itself as a specialized service provider for occupational health and safety in the Ruhr area and in North Rhine-Westphalia. Our customers include companies and organizations from industry, production, logistics, skilled trades, services, and public or municipal sectors.

In addition to working as an external specialist for occupational safety, our services also include fire protection, safety and health coordination (SiGeKo), expert noise measurements, inspections of work equipment, and practical training and instruction.

A key success is the continuous building of long-term safety-related support relationships and a growing customer base. In doing so, we combine many years of industry experience with modern, structured health and safety consulting.

Our goal is not to represent health and safety only on paper. We analyze workplaces, machines, and operational processes directly on site and develop clear measures that can be implemented economically.

Ullertec stands for practical, structured, and reliable health and safety from Bochum - across the Ruhr area, in North Rhine-Westphalia, and for selected services nationwide.