SAP Expert in Berlin

Part-time assignment since 01.09.2026.

• Operational support for fixed asset and investment accounting
• Support with the accounting treatment of assets under construction
• Processing of related accounting transactions in SAP R/3

System: SAP R/3

Assignment focus: Leading digital restructuring in a highly regulated Defence and Aerospace environment. Focus areas: improving data flows and data quality, introducing paperless data collection in production, integrating machine data for automatic SPC calculation and process control, as well as cybersecurity analyses.

Main objectives:

• Analyze, structure and improve data flows and data quality in production
• Introduce paperless data collection in manufacturing areas
• Integrate machine data for automatic SPC data calculation and process control
• Implement digital restructuring while meeting regulatory requirements in the Defence environment

Measures and results:

• Analyzed and structured existing production data flows as a basis for control and reporting
• Established mechanisms to ensure data quality and availability across manufacturing areas
• Introduced paperless data collection in production — replacing manual and paper-based processes
• Integrated machine data for automatic SPC data calculation (control charts, Cp/Cpk) and real-time process control
• Conducted cybersecurity analyses in the production and IT environments

Area of responsibility: Project management for digital restructuring, paperless production, data management and data quality in a highly regulated Defence and Aerospace environment.

Evidence-led health intelligence platform turning published research into personal health protocols. It scores 430 habits, foods, and supplements against the studies behind them, and moves the score when the evidence moves. Built solo.

• Built the daily ingestion pipeline across PubMed, bioRxiv, and medRxiv: 43,000+ papers from 3,400+ journals processed into 230,000+ typed evidence claims, each one traceable back to the study it came from.
• Designed the six-factor evidence scoring model and the public changelog behind it, so no recommendation ever appears without the papers underneath it. 23,000+ grade changes recorded and explained to date.
• Shipped an entity information model connecting every intervention to its mechanisms, biomarkers, and outcomes: 118 biomarkers with region-specific reference ranges, 77 mechanisms, 32 graded outcomes.
• Built the personalisation layer: blood panel ingestion that reads lab PDFs with a vision model and corrects results for draw time against the user's wake anchor, plus Oura, WHOOP, and Withings integration for daily readiness context.
• Operate eleven specialised review agents over the corpus and codebase, covering paper curation, retrieval quality, health-claim compliance across EU and US regimes, and security.
• Shipped the Evidence Assistant, a RAG assistant that answers from the claim database and cites the underlying papers, plus a B2B practitioner tier, an Expo React Native app, and localisation across 3 languages and 7 markets.

Stack: Next.js 16, TypeScript, Supabase, pgvector, Anthropic Claude, Vercel, DeepInfra.

Led a six-person multidisciplinary team delivering an 18-month organizational transformation program. Designed governance and decision-making structures, roles and responsibilities, capability- and knowledge-building approaches, learning interventions, and communication and implementation plans, and supported their execution to embed new ways of working across the ministry.

• Led a six-person multidisciplinary team delivering an 18-month organizational transformation program
• Designed governance, decision-making structures, roles and responsibilities
• Developed capability- and knowledge-building approaches and learning interventions
• Created communication and implementation plans
• Supported execution to embed new ways of working across the ministry

• Spearheaded the transformation of Telefonica Germany’s cloud journey into a self-service, automated marketplace by leading process analysis and design efforts; facilitated UX/UI collaboration and served as Scrum Master for cross-functional agile teams to ensure timely and quality delivery
• Designed, launched, and managed an enterprise-wide Learning & Development program focused on cloud-native skills, upskilling over 1,500 employees; undertook full vendor management including sourcing, tendering, contract negotiation, and ongoing partnership to ensure curriculum alignment with evolving organizational needs
• Implemented cloud migration processes aligned with corporate compliance and process governance; improved process transparency and audit readiness while reducing operational risks
• Architected and led a cross-divisional communication strategy to enhance organizational engagement; developed multiple channels including newsletters and intranet content, acting as single point of contact for all departmental communications to ensure consistency and alignment

• Detecting fraud patterns and implementing effective anti-fraud rules while maintaining acceptable false positive rates to ensure a balance between safety and a frictionless user experience
• Supporting ideation and roll-out of new trust and safety features to the platform to block fraudulent activity and increase user awareness for fraud
• Supporting Product, Development and Customer Support with BI reports and further guidance to identify and fight fraud and policy violations

• Further development and harmonization of cross-site HR structures and processes to increase efficiency and governance in close, ongoing collaboration with the (Group) Works Council.
• Management of the HR transformation during the change of ownership and realignment of the holding structures, generating annual savings of around €1.5 million
• Strategic development and restructuring of the Finance function with the CFO, establishment of a performance culture and optimization of structures and processes with a positive P&L impact.
• Realignment of Talent Acquisition, reducing time-to-hire from 7 months to 8 weeks, optimizing the cost and supplier structure, and introducing data-based management

• Business analysis of the Instant Win Games segment (financial, IT landscape, organization, customers)
• Gap analysis and resulting requirements, project planning, milestone planning, stakeholder management, risk analysis, project documentation, playbooks
• Successful establishment of sales activities and sales processes for Instant Win-Games

• Advising executives on steering strategic initiatives and complex programs
• Focus on structuring, decision support, and implementation under uncertainty
• Most recently supporting a leading consulting firm on a defense sales project for the Ukrainian market

• Implementation of data models in BW/4HANA, ABAP CDS Views, HANA Calculation Views, AMDP Scripts, OData Services, object-oriented ABAP in BW, SAC.
• Adjustments in BPC for BW/4HANA.

• Building up the Enterprise Architecture department. Preparing the convergence of IT / OT.
• Mapping the global business application landscape (6 countries).
• Concept for a graph model of the application landscape. Storing the results in the open-source graph database Neo4J. Various reports in the database query language CYPHER and the visualization component BLOOM. Automatic generation of IT architecture diagrams.
• Development of an application taxonomy to identify redundant applications.
• Applying Gartner's Software Portfolio Management TIME model (Tolerate, Invest, Migrate, and Eliminate) for portfolio management.
• Enterprise Architecture Governance: establishing architecture guidelines for documenting measures and decisions.
• Process modeling according to Porter (Value Chain).
• Various architecture approvals for change requests and documentation in Architecture Decision Records (ADR).
• Working on the RACI matrix for various processes.
• Working on business capabilities as preparation for a LeanIX rollout.
• Contributing to the concept for IT/OT convergence.
• Establishing architecture guidelines in a very pragmatic corporate culture. Knowledge about applications and responsibilities is spread across the world.

Operational end-to-end recruiting in a mid-sized company environment. Main focus on filling positions in the German market and internationally (Switzerland), with a focus on Sales and Blue Collar roles (Junior – Teamlead) for Falk & Ross. Stakeholder management, high-volume recruiting, and active sourcing. Ensuring an optimal candidate experience and conducting interviews.

• Stakeholder-Management
• High Volume Sales Recruiting / Blue Collar
• Filling key positions in the areas of: Sales and Blue Collar (including Field Sales Representatives, Inside Sales, Head of Sales)
• International recruiting for Switzerland
• Tools: Microsoft Teams, TestGorilla, LinkedIn Recruiter, Indeed Smart Sourcing

I served as the Lead Designer for two cross-functional teams at Casavi, a software platform for property managers. Casavi is a central platform for all aspects of digital property management, which streamlines operations and business processes.

SmartTask: The team focuses on ticket management, workflow automation, AI integration, enhancing communication between property managers and their clients.

Customer app/portal: The team is dedicated to fostering community engagement among residents of managed properties. The customer portal in combination with the Casavi app solves the challenges for property and facility managers.

My role spans the full design lifecycle, covering UX/UI design, user research, usability testing, and strategic design planning, across Casavi's web platform, mobile app, and customer portals. Each team comprises around 10 members, including a project manager, designer, developers, and QA testers. I am also responsible for the accessibility assurance of the whole product.

Design unit role: In addition to my core responsibilities, I actively contribute to the development and maintenance of the company's design system and style guide ensuring consistency and scalability across all products. Mentor junior designers is my official and moral responsibility.

• Full-service marketing agency for global technology groups