Freelancer profile translated to English.
Back to original languageAbout Rifion
I develop structured financial models and KPI systems that translate operational data into robust decision-making foundations.
Many companies collect large amounts of data but lack clear transparency into what truly drives profitability, risk, and performance. My focus is on developing clean analytical structures that connect operational processes, financial logic, and executive reporting.
My work typically includes:
• Financial model architecture (Excel / Google Sheets)
• KPI systems and executive dashboards
• Budget vs. Actual performance models
• Profitability and contribution margin analyses
• Model reviews, debugging, and structural improvements
Most recently, I developed a multifamily asset management model that integrates:
• Rent roll dynamics and vacancy status
• Tracking of lease expirations and renovation events
• NOI variance analyses against budget
• CapEx ROI and rent lift modeling
• a decision-oriented owner dashboard
The model is based on an event-driven structure where operational changes automatically propagate through financial metrics and reporting levels.
My background is strongly analytical and systems-oriented. I place great value on models that remain transparent, auditable, and truly relevant for decision-making.
If you need structured financial modeling instead of spreadsheet chaos, let's talk.
German
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Dr. Ing. h.c. F. Porsche AGSimulation Engineer | System Modeling & Analytical DevelopmentAUTOMOBILEOctober 2012 - Today (13 years and 10 months)Weissach, GermanyDevelopment and validation of complex technical systems using advanced simulation and analytical modeling methods.My responsibilities include:• Translation of real-world systems into structured, parameterized models• Evaluation of system performance using quantitative metrics• Identification of optimization potentials• Support of data-based decision-making processes at both operational and strategic levelsThis role requires distinct analytical precision, structured thinking, and the ability to methodically master complex, variable systems.
- Mercedes-Benz GroupThesis Student | System Modeling & Performance AnalysisAUTOMOBILEApril 2012 - September 2012 (5 months)Stuttgart, GermanyIndependent management of an analytical development project in an industrial environment.Focus areas:• Development of a structured model to represent real system parameters• Definition and evaluation of quantitative performance indicators• Identification of optimization potentials• Preparation of results for decision supportThe work required independent modeling, systematic analysis, and clear result interpretation for technical decision-makers.
- Mercedes-Benz GroupAnalytical Engineering Intern | System ModelingAUTOMOBILEOctober 2011 - March 2012 (5 months)Stuttgart, Germany• Support in the development of structured simulation models• Analysis of system behavior using quantitative metrics• Execution of sensitivity and comparative analyses• Documentation and interpretation of technical resultsEarly application of structured modeling and evaluation logics in complex development projects.
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Education
- DiplomingenieurKarlsruhe Institute of Technology: KIT2012Diplomstudium Maschinenbau mit Fokus auf mathematischer Modellierung, Systemanalyse und numerischen Verfahren. Schwerpunkte: • Differentialgleichungssysteme und numerische Simulation • Thermodynamik und Strömungsmechanik • Statistische Methoden und Messdatenanalyse • Optimierung technischer Systeme • Modellbasierte Systembewertung Das Studium legte die Grundlage für strukturiertes analytisches Denken, quantitative Problemlösung und die Reduktion komplexer Systeme auf messbare Entscheidungsparameter.