Data Scientist, Fidelity

Data Scientist, Fidelity

Company Fidelity
Job title Data Scientist
Job location Boston, Massachusetts, US
Type Full Time

Responsibilities:

  • Performs exploratory analysis, data cleaning, preparation and annotation, ML pipeline design and development, model evaluation, and validation.
  • Develops models using supervised and unsupervised ML algorithms.
  • Develops models using algorithms, such as decision trees, isolation forests, autoencoders/neural networks, linear/logistic regression, and clustering.
  • Develops models that operate on both structured and unstructured data (Natural Language Processing).
  • Analyzes and preprocesses features for model training.
  • Collaborates with team to assess project scope, define data requirements, prioritize tasks, and share research findings and updates.
  • Researches new techniques and technologies to improve team knowledge and enhance solutions.
  • Creates presentations to provide team updates on project progress, research, and new findings.
  • Participates in code reviews to enable learning, collaboration, and mentoring of other team members.

Requirements & Skills:

  • Master’s degree (or foreign education equivalent) in Computer Science, Engineering, Information Technology, Information Systems, Mathematics, Physics, or a closely related field and no experience.
  • Demonstrated Expertise (“DE”) performing complex SQL queries to extract features from SQL databases; using Python language for typical DS workflow steps — data preprocessing, regression, decision trees/random forest, neural network, feature selection/reduction, clustering, and parameter tuning.
  • DE developing data pipelines on Amazon Web Services (AWS) using S3 storage services and EC2 Cloud computing services; performing supervised and unsupervised modeling on tabular data in Python, using DS libraries (Pandas, NumPy, SciPy, and Scikit-Learn); training models on imbalanced datasets using python libraries (IMBlearn); creating data visualizations to analyze and evaluate model results, using Python libraries (Matplotlib and Seaborn).
  • DE developing classification models on text data, using Spacy, NLTK, Tensorflow, Pytorch, and BERT frameworks.
  • DE communicates and collaborates across teams to break down complex business problems, translate them into ML projects, and deliver data products and insights for productization, using collaboration tools (JIRA).

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