Freelancer profile translated to English.

Description

Looking for a data expert who is technical, strategic, and results-oriented?

I am Raphaël Rolnik, founder of **Highlights**, a studio specializing in data & AI.

I have worked as a data scientist and analyst in leading organizations, from tech scale-ups like Choco to large insurance groups like AXA and SCOR.

My role: designconcreteandtailor-madesolutions combining data science, automation, and business analysis.

My goal: transform your data into **performance drivers**, with a clear, efficient, and results-oriented approach.

Among what I offer, you will find:

-Strategic dashboards(Power BI, Looker, Tableau)

-Automation scripts&data processing(Python, SQL, API)

-Predictive models(machine learning, scoring, forecasting…)

-AI prototypes(GPT/LLM, internal copilots, RAG assistants)

Are you a startup, an SME, a firm, or an independent with underutilized data? Let's talk! I can assist you with one-off projects or help you structure a sustainable and scalable tool.

My vision:

✅ Business-first approach

✅ Fast and rigorous execution

✅ Analytical and pedagogical mindset

Industry field of expertise

Languages

French
Native or bilingual
English
Native or bilingual
Spanish
Fluent

Workplace preferences

Remote only

Primarily works remotely

AXA
Data Scientist
BANKING AND INSURANCE
March 2024 - September 2024 (6 months)
Nanterre, France
Development of an algorithm to produce a detailed economic analysis (positions + evolutions) for the foreign exchange coverages held by the AXA group (FX forwards, FX collars, CCS).
BI data engineering: automation of the calculation of outputs from the consolidated financial result database in DAX/M (Power Query) and reports from the financial asset inventory database.
Development and integration of ML models for forecasting financial revenue and detecting anomalies in asset portfolios: forecasting of the Current Yield Rate and Tier 2 capital using supervised models (linear regressions, decision trees); anomaly detection in transaction and consolidation data using unsupervised models (clustering algorithms).
Development of a PySpark & SQL tool (large database + structured data) for the roll forward of investment income (adjustment of asset portfolios, consolidation and aggregation of transactions and databases of asset classes).
Analyse de données Business intelligence Automatisation Data Engineering
SCOR SE
Data Scientist
BANKING AND INSURANCE
September 2024 - July 2025 (10 months)
Paris, France
Structuring pipelines for processing reinsurance databases
Development and optimization of predictive models for contract pricing (regression, clustering, gradient boosting...)
Creation and maintenance of benchmarks and KPIs using visualization tools and workflow automation (Power BI, Python).
Sensitivity tests, calibrations, and evaluation of economic assumptions used in reinsurance/MGA/NatCat models
Choco
Data Analyst
DIGITAL AND IT
January 2023 - November 2023 (10 months)
Paris, France
Data entry, extraction, visualization, and cleaning, A/B testing
Market studies and statistical research that contributed to signing long-term financial contracts with over 45 new partners
Reorganization and automation of cost center data, which led to an 8% reduction in uncategorized expenses