vandana

vandana

Machine Learning Engineer/Data scientist
India

About Me

Machine learning engineer with 5 years of experience and a strong track record of implementing statistical machine learning and deep learning solutions to improve business performance. Key achievement: Pioneered the inte…

Experience

machine learning engineer

10 bet
Jun 2023 - Present · 3 years 1 month

Online gaming company based out of Malta offering sports betting, casino, and live casino experience.
● Successfully pioneered the integration of 6 machine learning models into core business operations
● Used EvalML to develop churn prediction model and anticipate churn rates based on varying activity
lengths and identify players at risk of churn to inform targeted engagement increasing retention by 70%
● Leveraged XGBoost to construct a predictive model, forecasting deposits for a 90-day period based on initial 7 days of activity helping strategic player acquisition decisions and resulting in a substantial 60% increase in revenue generation opportunities
● Employed RandomForest algorithm to detect sports fraudsters based on initial 10 sports bets helping to bolster platform security and trust, successfully reducing false negatives by 80% as a direct result

Machine Learning Engineer

10bet, Remote
Present

Successfully pioneered the integration of 6 machine learning models into core business operations
Used EvalML to develop churn prediction model and anticipate churn rates based on varying activity lengths and identify players at risk of churn to inform targeted engagement increasing retention by 70%
Leveraged XGBoost to construct a predictive model, forecasting deposits for a 90-day period based on initial 7 days of activity helping strategic player acquisition decisions and resulting in a substantial 60% increase in revenue generation opportunities
Employed RandomForest algorithm to detect sports fraudsters based on initial 10 sports bets helping to bolster platform security and trust, successfully reducing false negatives by 80% as a direct result

Data Science Consultant

Paymaya, Remote

Managed entire lifecycle of Machine Learning models including data analysis and pipeline development
Analyzed/preprocessed bank transaction data to be used in the creation of fraud detection models
Developed and hyper-tuned supervised ML models with Feedzai to detect cross-channel fraud with an accuracy of 80%
Ensured model precision and identified opportunities for improvement through weekly model evaluation
Implemented an Airflow DAG to automate the process of generating training and test datasets for modeling (involves data extraction from Redshift using custom SQL scripts, transferring data to an AWS S3 bucket, preprocessing with SageMaker and uploading back to AWS), this streamlined workflow not only reduced manual effort by 50% but also ensured timely execution triggered by Airflow

Python Developer - Machine Learning

Ntwist, Hyderabad, India

Researched, designed, and deployed over 30 machine learning models from initial raw data analysis to preprocessing to ensure data was appropriate for modeling and of sufficient quality
Visualized dataset with over 2,000 features to identify trends/patterns using PCA and performed feature engineering to identify the most prominent features for modeling
Built deep learning models using TensorFlow and Keras to predict pipeline flow and pressures achieving MAE of +-5 with 95% accuracy
Incorporated models with optimization module using Pyomo reducing operational expenses by 60%
Conducted comprehensive testing on over 20 edge cases to evaluate model performance and worked on an object detection module for computer vision project

Machine Learning Specialist

Dreamers Inc, US/California,Remote

Researched various trading frameworks such as Tensortrade and AI4 to stay up-to-date on the industry
Maintained strong knowledge of cryptocurrency trading strategies, technology, and market dynamics
Identified key features responsible for stock price movement, modeled a predictor to predict stock price direction using transformer, gan, and lstm yielding an impressive 82% accuracy rate
Utilized TensorTrade an open source deep reinforcement learning framework as the foundation for developing customized trading strategies
Applied reinforcement learning algorithms, including DQN and PPO, with the Sortino ratio as the primary reward metric, to create effective trade strategies with a sortino ratio of 2.5

Skills

Data Science Machine Learning Algorithms Predictive Models Machine Learning Quantitative Software Engineering Communication Python C++ Scikit-Learn NumPy Pandas Statsmodels OpenCv AutoML EvalML Scipy TensorFlow Keras Pytorch Matplotlib Seaborn Plotly Regression Clustering Kmeans KNN HDBSCAN Classification Predictive Modeling Random Forest XGBoost LightGBM Decision Tree Adaboost Ensemble GBM Statistical Modeling Neural Networks ANN Computer Vision Natural Language Processing Deep Learning Optimization Pyomo Gekko Reinforcement Learning Time Series Forecasting LSTM RNN Multivariate Time Series Neural Prophet
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