freiberufler Data Science Consultant | Machine Learning | NLP auf freelance.de

Data Science Consultant | Machine Learning | NLP

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  • 47918 Tönisvorst
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  • de  |  en
  • 18.01.2024

Kurzvorstellung

Data Scientist with 4+ years of experience delivering data science projects (NLP, predictive modelling, data engineering) for market-leading German and international clients in telecoms, banking, gaming, transportation and legal.

Qualifikationen

  • Data Science
  • Deeplearning4j
  • Docker
  • Maschinelles Lernen
  • Microsoft Azure
  • Natural Language Processing (NLP)
  • Predictive analytics
  • Rasa
  • Scikit-learn
  • SQL

Projekt‐ & Berufserfahrung

Data Science Consultant
Kundenname anonymisiert, London
2/2023 – 8/2023 (7 Monate)
Versicherungen
Tätigkeitszeitraum

2/2023 – 8/2023

Tätigkeitsbeschreibung

AUTOMATED DATA EXTRACTION FROM INSURANCE DOCUMENTS

- Implemented an end-to-end data extraction workflow for insurance documents, involving use case discovery, AI vendor selection, model training and deployment.

Eingesetzte Qualifikationen

Data Science, Microsoft Azure, Microsoft Power Apps, Microsoft Power Automate, Natural Language Processing (NLP)

On-demand Data Science Consultant
Kundenname anonymisiert, London
1/2023 – 1/2024 (1 Jahr, 1 Monat)
Versicherungen
Tätigkeitszeitraum

1/2023 – 1/2024

Tätigkeitsbeschreibung

On-demand Data Science & AI Consulting
• Advising clients in the legal sector on building custom Azure OpenAI bots.
• Developing bots and enhancing performance with LlamaIndex.
• Delivering tailored data analyses.

Eingesetzte Qualifikationen

Microsoft Azure, Natural Language Processing (NLP), Python

Data Scientist (Positive Thinking Company) (Festanstellung)
Kundenname anonymisiert, Berlin
6/2022 – 12/2022 (7 Monate)
Logistikdienstleister
Tätigkeitszeitraum

6/2022 – 12/2022

Tätigkeitsbeschreibung

STREAMLINING DATA SOURCES AND PREDICTING CONDITION-BASED MAINTENANCE

I was responsible for all Data Science tasks in a team of three people (data engineer, data scientist and project lead).

- Data discovery and validation: there were multiple data sources for the same data.
- Creation of a process map and project plan.
- Writing of data engineering pipelines to turn data into input for ML models.
- Training and evaluation of ML models.
- Delivery of model output to another team as input for their model.

Eingesetzte Qualifikationen

Data Science, Docker, Git, Python, Scikit-learn

Lead Data Scientist (NLP) (Positive Thinking Company) (Festanstellung)
Kundenname anonymisiert, Berlin
4/2021 – 6/2022 (1 Jahr, 3 Monate)
Telekommunikation
Tätigkeitszeitraum

4/2021 – 6/2022

Tätigkeitsbeschreibung

MULTI-TURN CONVERSATIONAL VOICE ASSISTANT FOR MEDICAL APPOINTMENTS

I led the development of a multi-turn voice-based conversational AI (Natural Language Understanding, Speech-to-Text (STT), Text-to-Speech (TTS)) for scheduling medical appointments.

- Built, evaluated and deployed Transformer-based NLP pipelines.
- Trained, fine-tuned, evaluated and deployed STT and TTS models.
- Supported project management with resource allocation and requirements engineering.
- Mentored and onboarded other data scientists and developers.
- Ran regular product demonstrations for senior client stakeholders.

Eingesetzte Qualifikationen

Data Science, Deeplearning4j, Docker, Git, Microsoft Azure, Natural Language Processing (NLP), Python, Scikit-learn

Data Scientist (Positive Thinking Company) (Festanstellung)
Kundenname anonymisiert, Berlin
12/2020 – 3/2021 (4 Monate)
Banken
Tätigkeitszeitraum

12/2020 – 3/2021

Tätigkeitsbeschreibung

CUSTOMER ANALYTICS COACHING AND CHURN PREDICTION

- Data science project coaching: how to come up with use cases and how to set-up a data science project.
- Review of existing models.
- All aspects of the customer churn analysis:
- Data quality evaluation & data discovery.
- Preprocessing of data.
- Feature selection.
- Model training and evaluation.

Eingesetzte Qualifikationen

Python, Scikit-learn

Data Scientist (Positive Thinking Company) (Festanstellung)
Kundenname anonymisiert, Berlin
6/2020 – 12/2020 (7 Monate)
Banken
Tätigkeitszeitraum

6/2020 – 12/2020

Tätigkeitsbeschreibung

1. Project: Information extraction from banking documents
- Preprocessing of data.
- Training of a named entity recognition model to identify bank names.
- Visualisation of the relation between bank names in a network graph.

2. Project: Time-series analysis of net new money
- Data discovery and data preparation of internal and external data.
- Training of a time-series model (ArimaX).
- Documentation and hand-over.

Eingesetzte Qualifikationen

Data Science, Named-entity recognition (NER), Natural Language Processing (NLP), Python, Statistik (allg.)

Data Scientist (Positive Thinking Company)
Kundenname anonymisiert, Berlin
5/2020 – 7/2020 (3 Monate)
Konsumgüterindustrie
Tätigkeitszeitraum

5/2020 – 7/2020

Tätigkeitsbeschreibung

I was responsible for all aspects of the PoC
- Review of existing models.
- Creation of analytical project plan.
- Data discovery and data processing.
- Feature engineering, modelling and hyperparameter tuning.
- Evaluation, documentation and hand-over to internal team.

Eingesetzte Qualifikationen

Data Science, Predictive analytics, Python, Scikit-learn

Zertifikate

Rasa Developer Certificate
2021

Ausbildung

MSc
Behavioural Data Science
University of Amsterdam
2020
Amsterdam
MA
Political Science
Central European University
2018
Budapest
BSc
Liberal Arts & Sciences - Policy Science
Leiden University
2016
The Hague

Über mich

I am interested in the complete lifecycle of a data science project -> from understanding the business problem to modelling and deployment.

✨ SCOPE ✨

I would happily support you with

• the development of pilots and the transition to a live product.
• the identification and shaping of data science use cases.
• ad hoc analyses of relevant business questions.
• presenting findings to non-technical stakeholders in an understandable manner.

✨ EXPERIENCE ✨

I have 4+ years of experience as a data science consultant across a range of industries:

• Telecoms
• Banking
• Gaming
• Transportation
• Legal
• Insurance

Between 2020 and 2023, I was a data science consultant at an IT consulting company (Positive Thinking Company). I've been working as a freelancer since 2023.

Weitere Kenntnisse

MACHINE LEARNING & DEEP LEARNING
- Tools: Scikit-learn, Pandas, Jupyter, Matplotlib, NumPy, Statsmodels, Huggingface, Seaborn, PyTorch, Beautifulsoup, Selenium, NetworkX
- Concepts: Tree-based models, support vector machines, regression, dimensionality reduction, clustering, transformers, neural networks, time series, network science

NLP
- Python (NLTK, spaCy, gensim, flairNLP, fastText), large language models, OpenAI, LlamaIndex, RAG, Rasa, Rasa X, Azure Speech Studio, Azure Luis

DEVOPS & MLOPS
- Python, R, SQL, PyTest, Git, Gitlab, MLflow, CI/CD, Poetry, Docker, Azure, REST API

LOW-CODE/NO-CODE
- Microsoft Power Automate, Microsoft Power Apps, AWS Intelligent Document Processing

Persönliche Daten

Sprache
  • Deutsch (Muttersprache)
  • Englisch (Fließend)
Reisebereitschaft
auf Anfrage
Arbeitserlaubnis
  • Europäische Union
Home-Office
unbedingt
Profilaufrufe
265
Alter
29
Berufserfahrung
4 Jahre und 10 Monate (seit 06/2019)

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