Charles is available for hire
Hire CharlesCharles Camp
Verified Expert in Engineering
Machine Learning Developer
Location
Barcelona, Spain
Toptal Member Since
August 24, 2020
Charles is certified in both artificial intelligence and data science. He is indeed very good at producing high-performing models and making them easy to use. He adapts very well to all kinds of environments and has already worked for banks, startups, IT firms, and laboratories. His fields of expertise are, in particular, natural language processing and time series analysis.
Portfolio
Non-Fungible Films, Inc.
Python, Artificial Intelligence (AI), Natural Language Processing (NLP), GPT...
Global CPG Company
Python, Machine Learning, PySpark, Scikit-learn, Pandas
Phragmites, Inc.
Generative Pre-trained Transformers (GPT), GPT...
Experience
Availability
Part-time
Preferred Environment
Python, Amazon Web Services (AWS), Natural Language Processing (NLP), Time Series Analysis, Transformers, Reinforcement Learning
The most amazing...
...model I've built could identify people with some connection to financial crimes.
Work Experience
AI Developer
2023 - 2023
Non-Fungible Films, Inc.
- Fine-tuned stable diffusion models to be usable with the company's fictive characters.
- Deployed a Discord bot similar to Midjourney but using the custom stable diffusion model.
- Integrated the model with a stable diffusion UI to enable inpainting, image to image, and other applications.
Technologies: Python, Artificial Intelligence (AI), Natural Language Processing (NLP), GPT, Generative Pre-trained Transformers (GPT), Computer Vision, Machine Learning, Node.js
ML Engineer
2022 - 2023
Global CPG Company
- Created a pipeline to automate look-alike audience computations leveraging internal consumer behavior data.
- Compared models to achieve the highest performances and hyperparameters tuning.
- Created custom PySpark and scikit-learn estimators to integrate with PySpark and scikit-learn pipelines, respectively.
Technologies: Python, Machine Learning, PySpark, Scikit-learn, Pandas
ML and NLP Engineer
2021 - 2022
Phragmites, Inc.
- Set up an EC2 server, analyzed Telegram messages stored on a Postgres DB, and classified them as relevant or not for a given crypto-related project.
- Built a bot message-detection model using near-duplicates clustering approaches.
- Quantified the influence of Telegram users in crypto-centered conversations using graph theory.
- Trained a NER model to detect crypto project names in Telegram messages.
Technologies: Generative Pre-trained Transformers (GPT), GPT, Natural Language Processing (NLP), Machine Learning, Trend Analysis, Sentiment Analysis, Cryptocurrency, Artificial Intelligence (AI), Google Cloud, Python, SQL, Pandas, Scikit-learn, Data Science, Natural Language Toolkit (NLTK), SpaCy, Hugging Face, Neural Networks, Communication, Elasticsearch
Senior Data Scientist
2021 - 2022
Trust & Safety Laboratory
- Trained machine learning models to find controversial topics in tweets. Controversial topics were defined as potentially containing harmful misinformation.
- Trained ML models to detect false claims and misinformation in tweets.
- Built a pipeline to collect human loop reviews (AWS), automated the labeling of potentially misleading tweets, and performed website scraping.
- Developed a serverless framework to automatize social media screening tasks.
Technologies: Generative Pre-trained Transformers (GPT), GPT, Natural Language Processing (NLP), Docker, Kubernetes, Bazel, Machine Learning, Python, Scikit-learn, Pandas, Data Science, Linux, Amazon Web Services (AWS), Neural Networks, SpaCy, Artificial Intelligence (AI), Sentiment Analysis, Test Automation, Hugging Face
Python Developer | AI
2020 - 2021
Click Factura SA de CV
- Transcribed and summarized Spanish audio meetings: fine-tuned text-to-speech models ( DeepSpeech, NeMo, and Wav2Vec) and used text summary and diarisation models.
- Trained an OCR model to extract the information on Mexican expense tickets.
- Integrated the models into the existing Django application by creating APIs.
- Deployed the models using Docker containers and Flask.
Technologies: Python, Machine Learning, TensorFlow, Test Automation, Generative Pre-trained Transformers (GPT), GPT, Natural Language Processing (NLP), Artificial Intelligence (AI), Amazon Web Services (AWS), Kubernetes, Docker, Django, APIs, OCR, Speech to Text, SQL, Data Science, Linux, Neural Networks, Communication, Google Cloud, Hugging Face
Machine Learning Expert | Digital Advertisement
2020 - 2020
Primal Analytics
- Deployed Lambda to detect anomalies in Google ads statistics automatically.
- Compared various state-of-the-art ML models for time-series anomaly detection.
- Set up the AWS account for data storage and Lambda execution.
Technologies: Machine Learning, Digital Advertising, Python, Time Series Analysis, Scikit-learn, Anomaly Detection, SQL, Pandas, Data Science, Amazon Web Services (AWS), Neural Networks, ARIMA Models, Artificial Intelligence (AI), Trend Analysis
Senior Data Scientist
2019 - 2020
Glovo
- Designed, implemented, and deployed a customer lifetime value model. This was deployed on an EC2 instance using Luigi and scheduled with Jenkins.
- Used linear programming to optimize pickers' time shifts.
- Built an end-to-end pipeline to decide whether or not to show a product in the app based on its probability of being available in the store to improve the customer experience. The model was trained on SageMaker and then deployed on an EC2 instance.
Technologies: Linear Programming, TensorFlow, Data Science, Pandas, Machine Learning, Scikit-learn, Python, XGBoost, Redshift, Amazon SageMaker, Amazon Web Services (AWS), Luigi, SQL, Communication, Artificial Intelligence (AI), Anomaly Detection
Data Scientist
2016 - 2019
Credit Suisse
- Designed and deployed machine learning models to detect money laundering using transaction data.
- Led the Negative News screening project to automatically screen news data and find associations with financial crimes to enrich the risk scoring model.
- Used NLP to measure the impact of news data on the sales of financial products.
- Organized data sourcing and mapping of various transaction and KYC data sources on a big data platform. Also handled the design and implementation of a data model for the transaction and KYC data to facilitate transaction monitoring.
Technologies: Generative Pre-trained Transformers (GPT), GPT, Natural Language Processing (NLP), TensorFlow, PySpark, Data Science, Pandas, Machine Learning, Scikit-learn, Python, SpaCy, SQL, Artificial Intelligence (AI), Communication, Natural Language Toolkit (NLTK), R, Time Series Analysis, ARIMA Models, XGBoost, Sentiment Analysis, Anomaly Detection, Hugging Face, Elasticsearch, Test Automation
Research Scholar
2016 - 2016
Carnegie Mellon University
- Designed and implemented a model to predict the survival of patients after a cardiac arrest using their brain activity data (multivariate time series).
- Built an evaluation to give a better score to models predicting the survival earlier.
- Clustered patients to identify common characteristics and deduce specific preventive actions to increase their survival rate.
Technologies: ARIMA Models, Time Series Analysis, R, Data Science, Pandas, Machine Learning, Scikit-learn, Linux, Artificial Intelligence (AI), Trend Analysis, Anomaly Detection
Data Scientist Intern
2015 - 2015
Capgemini
- Set up a Spark cluster to read sensor data from HDFS and preprocess it.
- Built a scalable supervised model to detect manufacturing breakdowns using multivariate time series data (sensor data).
- Fine-tuned and validated the model. Identified main features leading to breakdowns.
Technologies: ARIMA Models, Time Series Analysis, PySpark, Data Science, Pandas, Machine Learning, Scikit-learn, Python, Linux, XGBoost, Artificial Intelligence (AI), Anomaly Detection
Experience
Recommender System
We are provided a matrix V of dimensions (number of users, number of movies). This matrix is filled with 0 if the user did not like the movie and one if the user liked it. The rest of the values are NaNs.
In the first step, we use non-negative matrix factorization (NMF) to find two matrices W and H of respective sizes (number of users, K) and (K, number of movies) that minimize the difference between V and WH where K is a small value (< 10). That means we look for W and H such as WH is close to V.
Afterward, we use W and H to cluster the users and can now recommend movies that will be liked by their assigned cluster.
In the first step, we use non-negative matrix factorization (NMF) to find two matrices W and H of respective sizes (number of users, K) and (K, number of movies) that minimize the difference between V and WH where K is a small value (< 10). That means we look for W and H such as WH is close to V.
Afterward, we use W and H to cluster the users and can now recommend movies that will be liked by their assigned cluster.
Face and Image Recognition
A facial recognizer to detect faces using a webcam and OpenCV. This project was first extended to simple objects before being extended again to custom objects retraining a pre-trained state-of-the-art TensorFlow model.
Skills
Languages
Python, SQL, R
Libraries/APIs
Scikit-learn, Pandas, PySpark, SpaCy, Natural Language Toolkit (NLTK), XGBoost, TensorFlow, Luigi, OpenCV, Node.js
Paradigms
Data Science, Anomaly Detection, Linear Programming, Test Automation
Other
Time Series Analysis, Natural Language Processing (NLP), Machine Learning, Artificial Intelligence (AI), Communication, GPT, Generative Pre-trained Transformers (GPT), Neural Networks, ARIMA Models, Sentiment Analysis, Cryptocurrency, Hugging Face, Analysis of Variance (ANOVA), APIs, Speech to Text, OCR, Decentralized Finance (DeFi), Trend Analysis, Digital Advertising, Computer Vision, Reinforcement Learning, PEFT, LoRa, Transformers
Platforms
Linux, Amazon Web Services (AWS), Docker, Kubernetes
Frameworks
Django
Tools
Amazon SageMaker, Bazel
Storage
Redshift, Google Cloud, Elasticsearch
Education
2014 - 2016
Master's Degree in Data Science
Grenoble Institute of Technology - Grenoble, France
2011 - 2014
Bachelor's Degree in Computer Science
Grenoble Institute of Technology - Grenoble, France
Certifications
JULY 2023 - PRESENT
Generative AI with Large Language Models
Coursera
APRIL 2022 - PRESENT
Decentralized Finance (DeFi)
Coursera
FEBRUARY 2022 - FEBRUARY 2025
AWS Solutions Architect Associate
Pearson VUE
DECEMBER 2020 - PRESENT
Django for Everybody
University of Michigan | via Coursera