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Antal International
Senior Data Scientist (AI/LLM )Antal International • Chennai, India
Senior Data Scientist (AI/LLM )

Senior Data Scientist (AI/LLM )

Antal International • Chennai, India
15 days ago
Job description

AI & LLM Engineering

  • Design and develop LLM-powered features including RAG (Retrieval-Augmented Generation) pipelines, prompt engineering.
  • Build and evaluate agentic AI systems using frameworks.
  • Integrate vector databases for semantic search and knowledge retrieval.
  • Explore self-hosted LLM deployments using Ollama, vLLM, or similar frameworks.

Machine Learning & Modeling

  • Build, train, and evaluate ML models for credit risk, fraud detection, anomaly detection, and customer segmentation.
  • Perform feature engineering, hyperparameter tuning, model selection, and error analysis.
  • Apply ensemble methods (boosting, bagging, stacking) to improve model robustness.
  • Conduct A/B testing, multivariate experiments, and statistical analysis to validate model performance.

Cloud & Production

  • Build and maintain scalable ML pipelines and data workflows on cloud infrastructure.
  • Collaborate with data engineers to integrate models into production systems using MLOps best practices.
  • Write clean, production-level Python code and contribute to shared AI tooling and libraries.


Who you need to be?
Minimum Qualification & Experience

  • 3+ years of industry or project experience in AI/ML engineering (internships and academic projects strongly count).
  • Bachelor’s OR master’s degree in statistics, computer science, Engineering, Mathematics, or a related technical field.

AI & LLM Skills (Must Have)

  • Hands-on experience or strong project exposure to LLMs — prompt engineering, RAG pipelines.
  • Familiarity with Hugging Face Transformers, OpenAI API, or equivalent LLM frameworks.
  • Understanding of vector embeddings, semantic search, and knowledge retrieval concepts.
  • Awareness of GenAI and Agentic AI methodologies and their practical applications.


Programming / Cloud / Data Skills (Must Have)

  • Strong Python programming skills — clean, maintainable, production-ready code.
  • Proficient in ML libraries: scikit-learn, TensorFlow or PyTorch, XGBoost, pandas, NumPy.
  • Solid SQL skills for data querying, transformation, and mining structured datasets.
  • Experience normalizing and preprocessing data for consistency, quality, and model readiness.
  • Working knowledge of at least one major cloud platform: AWS, GCP, or Azure.
  • Understanding of cloud storage, compute, and containerization basics (Docker, Kubernetes).
  • Exposure to big data tools such as Spark or Hadoop (MapReduce, Hive, Pig) is a plus.


Machine Learning Algorithms (Good to Have)

  • Clear understanding, coding, implementation, error analysis, and model tuning across:
  • Supervised Learning: Linear Regression, Logistic Regression, SVM, Decision Trees, Random Forest, XGBoost.
  • Neural Networks: Shallow Neural Networks and familiarity with deep learning architectures.
  • Unsupervised Learning: Clustering (K-Means, DBSCAN), Recommender Systems.
  • Time Series & Anomaly Detection: ARIMA, Isolation Forest, statistical anomaly methods.
  • Strong command of model selection, cross-validation, feature selection, and ensemble methods (boosting, bagging, stacking).
  • Ability to perform hyperparameter tuning using Grid Search, Random Search, or Bayesian optimization.

Nice to Have

  • Experience in fintech, credit scoring, risk analytics, or financial inclusion domains.
  • Contributions to open-source ML/AI projects or a strong personal project portfolio on GitHub.
  • Familiarity with MCP (Model Context Protocol) or building AI tool integrations.
  • Experience with MLflow, Weights & Biases, or other experiment tracking tools.

Soft Skills

  • Genuine curiosity about AI/ML and eagerness to learn in a fast-moving field.
  • Strong problem-solving mindset — able to break down complex challenges into actionable steps.
  • Clear communication skills to present model results and insights to non-technical stakeholders.
  • Collaborative team player who thrives in a cross-functional, mission-driven environment.

Job location

  • Chennai/Bangalore (work from office-Hybrid)
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Senior Data Scientist (AI/LLM ) • Chennai, India

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