Senior Data Scientist

Envision Employment Solutions is currently looking for a Senior Data Scientist for one of our partners, a global leader in the IT Services and IT Consulting.

• Bachelor’s or Master’s degree in Data Science, AI, or Computer Science
  .
• 4 to 6 years of experience is required.
• Strong record of production-grade ML/NLP projects
  .
• Experience leading small data science teams or research initiatives.

• Deep expertise in model architecture design
  , feature stores
  , and model monitoring
  .
• Experience in ensemble blending
  , A/B testing
  , and model explainability (SHAP, LIME).
• Builds and fine-tunes transformer-based models for custom tasks (summarization, Q&A, document intelligence).
• Implements RAG (Retrieval-Augmented Generation) and embedding-based semantic search
  .
• Integrates vector databases (Pinecone, FAISS, Chroma).
• Uses Lang Chain or Llama Index for orchestration.
• Evaluates and optimizes prompt templates and context length efficiency
  .
• Designs data pipelines (Airflow, Spark, Dataiku).
• Deploys scalable APIs
  , manages CI/CD
  , monitoring
  , and drift detection
  .
• Works closely with product and engineering teams to embed AI in production systems.

• Leads small teams or work streams.
• Ensures project quality, deadlines, and alignment with business KPIs.
• Coaches mid-level team members and contributes to talent development.