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Chandra sai kiran Kammari

Mid-level Machine Learning Engineer specializing in fraud detection and real-time personalization

StripeUniversity of TampaSan Francisco, CA6 Years ExperienceMid LevelWorks On-Site

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ML/LLM engineer with Stripe and Adobe experience who productionized a transformer-based Payments Foundation Model for real-time fraud detection at global scale (billions of transactions). Built petabyte-scale ETL/feature pipelines (Spark/EMR, Airflow, dbt, Kafka/Flink) and achieved <100ms multi-region inference (EKS, TorchServe, edge/Lambda, GPU/CPU routing) with strong PCI-DSS/GDPR compliance and explainability (SHAP/LIME), reporting a 64% fraud accuracy improvement.

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Key Strengths

  • Built and deployed LLM/transformer-based real-time fraud detection at Stripe serving billions of transactions
  • Designed petabyte-scale feature engineering and distributed ETL with Spark on EMR orchestrated by Airflow + dbt
  • Achieved global <100ms inference via multi-region Kubernetes (EKS), TorchServe, edge/Lambda optimizations, and GPU/CPU hybrid routing
  • Production-grade rollout practices: blue-green/canary releases with automated rollback based on latency drift and false positives
  • Strong compliance and auditability focus (PCI-DSS, GDPR) using lineage/retention controls, OpenTelemetry traces, and explainability (SHAP/LIME)
  • Rigorous evaluation methodology: synthetic + historical test suites, shadow-mode testing, offline/online evals, and continuous monitoring (Prometheus/Grafana/OpenTelemetry)
  • Cross-functional delivery with non-technical Risk & Compliance stakeholders; translated ML concepts and defined acceptable false-positive/audit requirements
  • Reported outcome: improved fraud accuracy by 64% while meeting compliance requirements

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Experience

Machine Learning EngineerStripe · Jun 2023 – Present
Machine Learning EngineerAdobe · Jul 2020 – Dec 2021
AI EngineerIBM · Jun 2019 – Jun 2020

Education

University of Tampamaster, Information Technology and Management

Skills

PythonPyTorchTensorFlowScikit-learnPandasNumPyLightGBMXGBoostFastAPIJavaSQLPostgreSQLMicrosoft SQL ServerSQLAlchemyPySpark

Languages

English

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Typically responds within 24 hours

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Chandra sai kiran KammariMid-level Machine Learning Engineer specializing in fraud detection and real-time personalization