Senior Data Scientist

Job Description

Must Have Technical/Functional Skill

Hands-on Experience On

• Programming Languages
• Strong Python familiarity (hands on) for data prep, modeling, and building ML components.
• SQL - Skills: joins, window functions, CTEs, query optimization
• Machine Learning
• Linear/Logistic Regression
• Decision Trees, Random Forest, XGBoost, LightGBM
• SVM, KNN
• Model evaluation - Precision/Recall, F1, ROC-AUC, MSE, RMSE
• Model tuning - Grid search, randomized search, cross validation
• Deep Learning
• Frameworks: TensorFlow, Keras, PyTorch
• CNNs, RNNs, LSTMs, Transformers
• Use cases: NLP, computer vision, time-series forecasting
• Data Wrangling & Preprocessing
• Missing data handling
• Feature engineering
• Data cleaning
• Outlier detection
• Normalization/standardization
• Data Visualization & BI Tools
• Python: Matplotlib, Seaborn, Plotly
• Tools: Tableau, Power BI
• Dashboards, reporting, storytelling with data
• Big Data & Cloud Tools

(Needed for production-scale roles)

• Big Data Frameworks: Spark, Hadoop
• Cloud Platforms (any one strongly):
• AWS (S3, EC2, SageMaker)
• Azure (Data Factory, Databricks, ML Studio)
• GCP (BigQuery, Vertex AI)
• Deployment Skills (advanced roles)
• Model deployment: Flask, FastAPI
• Docker, Kubernetes (optional)
• CI/CD basics
• Databases & Data Engineering Basics
• Relational: MySQL, PostgreSQL, SQL Server
• NoSQL: MongoDB, Cassandra
• Data pipelines: Airflow, Prefect (optional)

Roles & Responsibilities

• Define the ML use case, success metrics, and evaluation criteria; Liaise with business directly and translate business needs into an ML approach.
• Perform data exploration, data quality checks, feature engineering, and dataset preparation for training and testing.
• Build, train, validate, and iterate ML models; compare experiments and select the best candidate model.
• Package the solution f or production (e.g., containerized scoring/service endpoint) and support deployment with engineering/MLOps practices
• Set up basic monitoring (model accuracy/health) and support continuous improvement post release. Required Skills & Experience
• Solid foundation in ML concepts (supervised/unsupervised, evaluation, validation) and practical experimentation.
• Experience taking models to production in a cloud agnostic way (portable design; API/service mindset).
• Working knowledge of version control and basic CI/CD-style collaboration with engineering teams.

Salary Range: $125,000-$145,000 a year

TCS Employee Benefits Summary

Discretionary Annual Incentive.

Comprehensive Medical Coverage: Medical & Health, Dental & Vision, Disability Planning & Insurance, Pet Insurance Plans.

Family Support: Maternal & Parental Leaves.

Insurance Options: Auto & Home Insurance, Identity Theft Protection.

Convenience & Professional Growth: Commuter Benefits & Certification & amp; Training Reimbursement.

Time Off: Vacation, Time Off, Sick Leave & Holidays.

Legal & Financial Assistance: Legal Assistance, 401K Plan, Performance Bonus, College Fund, Student Loan Refinancing.

Qualifications: BACHELOR OF COMPUTER SCIENCE