Freelance NLP/Machine Learning Developer
2018 - PRESENTDiscourse- Developed machine learning models for natural language understanding.
- Implemented models for dialog flow identification and classification.
- Developed unsupervised models for intent discovery and natural language generation.
Technologies: Continuous Deployment, Continuous Integration (CI), Rasa.ai, GitLab CI/CD, Apache Kafka, Apache Airflow, Data Pipelines, Docker, Big Data, PostgreSQL, Data Science, Machine Learning, PyTorch, Artificial Intelligence (AI), Natural Language Processing (NLP), Natural Language Understanding (NLU), Computational Linguistics, Pytest, SpaCy, Data Engineering, Kubernetes, Amazon Web Services (AWS), Scrum, Scikit-learn, Google Cloud Platform (GCP), Jupyter, Deep Learning, Chatbots, Statistical Data Analysis, NumPy, Python, Pandas, IBM WatsonFreelance Chatbot Developer
2018 - 2019BiggerBrains (via Toptal)- Developed a natural-language-understanding model for an educational chatbot.
- Integrated the chatbot with Slack, Facebook Messenger, and Microsoft Teams platforms.
- Implemented the chatbot dialog engine using a Rasa machine learning system.
Technologies: Machine Learning, Artificial Intelligence (AI), Natural Language Processing (NLP), Natural Language Understanding (NLU), Computational Linguistics, SpaCy, Scikit-learn, Deep Learning, Chatbots, NumPy, Python, Pandas, Django, Rasa.ai, TensorFlowFreelance NLP/machine learning Developer
2017 - 2018Cargo Chief (via Toptal)- Developed a system for data extraction from natural language sources.
- Implemented both rule-based extractions and machine learning for natural language processing.
- Developed tools for data curation and data preprocessing.
Technologies: Amazon Web Services (AWS), OCR, Data Pipelines, Image Processing, MySQL, Data Science, Machine Learning, PyTorch, Artificial Intelligence (AI), Natural Language Processing (NLP), Natural Language Understanding (NLU), Computational Linguistics, SpaCy, Data Engineering, LightGBM, Scrum, Flask, Scikit-learn, GitHub, Jupyter, SQL, Deep Learning, Statistical Data Analysis, NumPy, Python, PandasFreelance Data Scientist
2017 - 2017HumNutrition (via Toptal)- Implemented a product recommendation system that was also integrated with the webshop.
- Built a predictive model for the churning of subscription customers.
- Performed a clustering analysis of the customer space to extract insights for marketing.
- Developed REST web services to integrate the models into the main business application.
Technologies: ETL, Data Pipelines, Docker, MySQL, Data Science, Machine Learning, PyTorch, Forecasting, SpaCy, Data Engineering, Recommendation Systems, XGBoost, LightGBM, Scikit-learn, GitHub, Jupyter, SQL, Deep Learning, Web Scraping, Statistical Data Analysis, NumPy, Python, Pandas, TensorFlowFreelance Data Analyst
2014 - 2017Nespresso- Worked on the blueprint design and implementation of a new retail information system with responsibilities on customer service and supply chain flows.
- Developed web services for the eCommerce integration with supply chain (stock, availability, sales documents).
- Implemented an outlier detection system for alerts on customer service data entry.
- Developed an extensive set of automated unit tests for end-to-end supply chain flows.
- Analysed data log for bottleneck identification and performance improvement.
Technologies: ETL, Data Pipelines, Data Science, Machine Learning, Forecasting, Data Engineering, XGBoost, LightGBM, Scikit-learn, Jupyter, SQL, Statistical Data Analysis, NumPy, Python, Pandas, R, SAPFreelance Data Analyst and Developer
2013 - 2013Syncronic- Worked as a core developer of a new SaaS platform for sales forecasting.
- Created the general architecture design, forecasting model, back-end development, REST API, and integration with the ERP system.
- Developed a forecasting model by combining ARIMA and ETS with a machine-learning gradient-boosting model.
Technologies: ETL, Data Science, Machine Learning, Forecasting, Scikit-learn, Statistical Data Analysis, NumPy, Python, Pandas, Time SeriesData Analyst (Contract)
2011 - 2013Novozymes- Worked on the business blueprint and implementation of a new SAP supply chain solution.
- Designed and developed new production planning heuristics.
- Developed automated end-to-end tests.
Technologies: ETL, Data Science, Machine Learning, Scikit-learn, Jupyter, SQL, Statistical Data Analysis, NumPy, Python, Pandas, SAPWeb Developer (Contract)
2011 - 2011Unilever- Enhanced the Python back-end of Digpedia.net—a multimedia marketing internal web application.
- Developed, in Django, a system for multimedia management with fine-grained access control.
- Implemented in the Django application a system for temporary access to resources.
Technologies: Python, PostgreSQL, DjangoData Analyst | Developer (Contract)
2008 - 2011Tetra Pak- Designed and developed a block-planning extension to the production planning software.
- Collaborated on the design of the new available-to-promise solution and product-allocation solution.
- Designed and implemented enhancements to the SAP CIF interface to support a special VMI scenario.
- Supported and worked on solution enhancements for rollouts in multiple plants.
Technologies: Data Science, SQL, Statistical Data Analysis, Python, SAPData Analyst (Contract)
2009 - 2010Sony Mobile- Implemented a prototype for the available-to-promise system using rules-based functionality for the project proof of concept.
- Designed and implemented an SAP global available-to-promise system.
- Designed and built the technical specifications for enhancements in the APO interface, backorder processing, and special reports.
Technologies: Data Science, Python, SAPData Analyst (contract)
2008 - 2010Nestlé- Worked on the data analysis for performance improvement and issue resolution.
- Designed and implemented an algorithm to support products with shelf-life constraints in sales stock allocation.
- Enhanced the available-to-promise process in the supply chain management system.
- Designed and developed a simplified user interface for quotas/allocations maintenance; used dynamic source code generation.
Technologies: Data Science, ABAP, SQL, Python, SAPData Analyst (Contract)
2007 - 2007Philips Consumer Electronics- Collaborated on the business blueprint design for supply chain quota allocation as a technical expert.
- Implemented a prototype with the algorithm identified in the blueprint.
- Worked on the project SWOT analysis.
Technologies: Data Science, Python, SAPData Analyst (Contract)
2007 - 2007Johnson & Johnson Pharmaceutical- Conducted a data analysis in order to troubleshoot system issues and implement improvements.
- Designed and developed enhancements on the sales forecasting and a demand-planning system.
- Implemented enhancements to the production-planning detailed scheduling system.
Technologies: Data Science, SQL, Python, SAPData Analyst | Developer
2001 - 2006Sonae Industria- Worked on a new greenfield SAP implementation with a focus on the supply chain system.
- Analyzed data in order to achieve performance and stability improvement.
- Developed a real-time asynchronous interface for a SAP integration with shop-floor control.
- Implemented a web-based performance-monitoring dashboard.
Technologies: Java, Data Warehouse Design, Data Science, ABAP, SQL, Statistical Data Analysis, Python, R, Oracle, SAP