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Avantik Tiwari

Junior Data Scientist / Big Data Engineer specializing in ML, LLMs, and analytics platforms

Tempe, ArizonaResearch Aide – Data Science & Analytics3 years experienceJuniorTelecommunicationsTechnologyData & Analytics
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About

Backend/data platform engineer who led a major redesign of a hybrid streaming+batch analytics platform processing 10+ TB/day (Airflow/Hive/BigQuery) with strong data-quality automation. Also built a production RAG PDF assistant with concrete mitigations for hallucinations and prompt injection (re-ranking, grounding, verifier step) and has deep experience executing low-risk migrations (dual-write, blue-green, rapid rollback) and implementing JWT-based row-level security.

Experience

Research Aide – Data Science & AnalyticsArizona State University
Rust Developer InternASU SolarSPELL Initiative
Big Data EngineerReliance Jio Platforms Limited

Education

Arizona State Universitymaster, Data Science, Analytics and Engineering (2026)
University of Mumbai, Mumbaibachelor, Information Technology (2022)

Key Strengths

  • Designed and scaled a data platform ingesting/processing 10+ TB per day for analytics and ML
  • Strong architectural tradeoff judgment (latency vs cost; streaming vs batch) with stakeholder alignment
  • Production-grade API engineering in Python/FastAPI (async, caching, observability, CI/CD, canary deploys)
  • Built a RAG PDF assistant with layered defenses against hallucinations and prompt injection (grounding, re-ranking, verification)
  • Led high-safety backend migration using expand/contract, dual writes, checksums/row-level validation, blue-green cutover, and fast rollback
  • Implemented fine-grained auth and row-level security using JWT claims and database policies for multi-tenant systems
  • Proactively identified subtle edge cases (aggregation key sparsity, UI/DB race conditions) and fixed with targeted tests

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Languages

English

Skills

PythonSQLRustJavaJavaScriptAndroid Development (Java)MySQLPostgreSQLBackend ServicesRESTful APIsETL PipelinesData ModelingScalable Data ArchitectureData ValidationSystem Reliability