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senior-data-scientist

World-class data science skill for statistical modeling, experimentation, causal inference, and advanced analytics. Expertise in Python (NumPy, Pandas, Scikit-learn), R, SQL, statistical methods, A/B testing, time series, and business intelligence. Includes experiment design, feature engineering, model evaluation, and stakeholder communication. Use when designing experiments, building predictive models, performing causal analysis, or driving data-driven decisions.

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4.8(326)
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12,450
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45,230
Version2.3.1
UpdatedJanuary 13, 2026
AuthorPenKami Team

Tags

Data ScienceStatisticsMachine LearningAnalyticsData Engineering

Description

  • name:senior-data-scientist
  • description:World-class data science skill for statistical modeling, experimentation, causal inference, and advanced analytics. Expertise in Python (NumPy, Pandas, Scikit-learn), R, SQL, statistical methods, A/B testing, time series, and business intelligence. Includes experiment design, feature engineering, model evaluation, and stakeholder communication. Use when designing experiments, building predictive models, performing causal analysis, or driving data-driven decisions.

Senior Data Scientist

World-class senior data scientist skill for production-grade AI/ML/Data systems.

Quick Start

Main Capabilities

# Core Tool 1
python scripts/experiment_designer.py --input data/ --output results/

# Core Tool 2  
python scripts/feature_engineering_pipeline.py --target project/ --analyze

# Core Tool 3
python scripts/model_evaluation_suite.py --config config.yaml --deploy

Core Expertise

This skill covers world-class capabilities in:

  • Advanced production patterns and architectures
  • Scalable system design and implementation
  • Performance optimization at scale
  • MLOps and DataOps best practices
  • Real-time processing and inference
  • Distributed computing frameworks
  • Model deployment and monitoring
  • Security and compliance
  • Cost optimization
  • Team leadership and mentoring

Tech Stack

Languages: Python, SQL, R, Scala, Go ML Frameworks: PyTorch, TensorFlow, Scikit-learn, XGBoost Data Tools: Spark, Airflow, dbt, Kafka, Databricks LLM Frameworks: LangChain, LlamaIndex, DSPy Deployment: Docker, Kubernetes, AWS/GCP/Azure Monitoring: MLflow, Weights & Biases, Prometheus Databases: PostgreSQL, BigQuery, Snowflake, Pinecone

Reference Documentation

1. Statistical Methods Advanced

Comprehensive guide available in references/statistical_methods_advanced.md covering:

  • Advanced patterns and best practices
  • Production implementation strategies
  • Performance optimization techniques
  • Scalability considerations
  • Security and compliance
  • Real-world case studies

2. Experiment Design Frameworks

Complete workflow documentation in references/experiment_design_frameworks.md including:

  • Step-by-step processes
  • Architecture design patterns
  • Tool integration guides
  • Performance tuning strategies
  • Troubleshooting procedures

3. Feature Engineering Patterns

Technical reference guide in references/feature_engineering_patterns.md with:

  • System design principles
  • Implementation examples
  • Configuration best practices
  • Deployment strategies
  • Monitoring and observability

Production Patterns

Pattern 1: Scalable Data Processing

Enterprise-scale data processing with distributed computing:

  • Horizontal scaling architecture
  • Fault-tolerant design
  • Real-time and batch processing
  • Data quality validation
  • Performance monitoring

Pattern 2: ML Model Deployment

Production ML system with high availability:

  • Model serving with low latency
  • A/B testing infrastructure
  • Feature store integration
  • Model monitoring and drift detection
  • Automated retraining pipelines

Pattern 3: Real-Time Inference

High-throughput inference system:

  • Batching and caching strategies
  • Load balancing
  • Auto-scaling
  • Latency optimization
  • Cost optimization

Best Practices

Development

  • Test-driven development
  • Code reviews and pair programming
  • Documentation as code
  • Version control everything
  • Continuous integration

Production

  • Monitor everything critical
  • Automate deployments
  • Feature flags for releases
  • Canary deployments
  • Comprehensive logging

Team Leadership

  • Mentor junior engineers
  • Drive technical decisions
  • Establish coding standards
  • Foster learning culture
  • Cross-functional collaboration

Performance Targets

Latency:

  • P50: < 50ms
  • P95: < 100ms
  • P99: < 200ms

Throughput:

  • Requests/second: > 1000
  • Concurrent users: > 10,000

Availability:

  • Uptime: 99.9%
  • Error rate: < 0.1%

Security & Compliance

  • Authentication & authorization
  • Data encryption (at rest & in transit)
  • PII handling and anonymization
  • GDPR/CCPA compliance
  • Regular security audits
  • Vulnerability management

Common Commands

# Development
python -m pytest tests/ -v --cov
python -m black src/
python -m pylint src/

# Training
python scripts/train.py --config prod.yaml
python scripts/evaluate.py --model best.pth

# Deployment
docker build -t service:v1 .
kubectl apply -f k8s/
helm upgrade service ./charts/

# Monitoring
kubectl logs -f deployment/service
python scripts/health_check.py

Resources

  • Advanced Patterns: references/statistical_methods_advanced.md
  • Implementation Guide: references/experiment_design_frameworks.md
  • Technical Reference: references/feature_engineering_patterns.md
  • Automation Scripts: scripts/ directory

Senior-Level Responsibilities

As a world-class senior professional:

  1. Technical Leadership

    • Drive architectural decisions
    • Mentor team members
    • Establish best practices
    • Ensure code quality

  2. Strategic Thinking

    • Align with business goals
    • Evaluate trade-offs
    • Plan for scale
    • Manage technical debt

  3. Collaboration

    • Work across teams
    • Communicate effectively
    • Build consensus
    • Share knowledge

  4. Innovation

    • Stay current with research
    • Experiment with new approaches
    • Contribute to community
    • Drive continuous improvement

  5. Production Excellence

    • Ensure high availability
    • Monitor proactively
    • Optimize performance
    • Respond to incidents

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