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Devisri-B/README.md

Hi 👋, I'm Devi Sri Bandaru

I don't just train models; I engineer resilient, deterministic AI systems.
My passion lies in taking fragile LLM prototypes and hardening them into scalable, agentic microservices. Whether it's architecting graph-based Self-RAG pipelines with zero-cost NLI guardrails, publishing open-source data tooling, or optimizing low-latency vector databases, I operate at the intersection of high-performance engineering and applied cognitive intelligence.

Portfolio LinkedIn Medium Email


🔬 About Me

  • 🎓 MS in Computer Science from Kent State University (GPA: 3.97 / 4.0) | BS in CS (GPA: 3.7 / 4.0).
  • 📜 Researcher with peer-reviewed publications across IEEE CAI 2026, MDPI AI (2025), and SKASE (2024).
  • 📦 Open-Source Tooling: Creator & Maintainer of wranglefy and tprdbreader on PyPI (80% dataset parsing speedup).
  • 🛡️ Certifications: Anthropic Model Context Protocol (MCP) Specialized Engineer, AWS Machine Learning - Specialty, Microsoft Certified: Power BI Data Analyst Associate, Tableau Desktop Specialist, HackerRank Advanced SQL, and Databricks Generative AI Fundamentals.
  • 💡 Core Focus: Autonomous Agent Workflows (LangGraph, Anthropic SDK), Low-Latency Vector Databases (pgvector <120ms), Serverless Inference Optimization (ONNX Lambda <100ms), and Quantitative BI Analytics.

📦 Open Source on PyPI

Package Description Badges
wranglefy Automated tabular data preprocessing, schema validation, and missing data auditing across CSV, JSON, Excel, and Parquet. PyPI Version Downloads
tprdbreader High-performance custom byte-stream parser delivering an 80% speedup in dataset loading for research pipelines. PyPI Version Downloads

📚 Research Publications

Venue Paper Title Core Contribution
IEEE CAI 2026 Retrieval-Augmented AI Feedback in STEM Education RAG evaluation pipelines, metacognitive prompting, and factual grounding
MDPI AI 2026 Mapping the LLM Landscape: Cross-Family Survey Cross-family survey across 100+ LLMs, RLHF, DPO, and benchmark evals
SKASE 2025 The Behavioural Translation Style Space Temporal cognitive dynamics & RL agent behavioral trajectory simulation
TT8 2026 conference Assessing Pause Thresholds in Process Research Parametric & non-parametric latency distribution modeling on HCI data
Preprint 2026 Large Language Models: Architectures & Alignment Attention formulations, state-space models, PEFT/LoRA, and alignment
arXiv 2025 From Representation to Enactment: ABC Framework Cognitive state transitions and mental representation modeling in NLP

🚀 Featured Systems & Projects

  • Live Platform: multi-tenant-saas-platform-with-an-ai.onrender.com
  • Engineered an adaptive LangGraph Self-RAG state graph combining hybrid retrieval (pgvector + Postgres FTS via RRF) with local DeBERTa-v3 NLI cross-encoders (~20–40ms CPU latency) for zero-cost hallucination verification and dynamic online search fallback.
  • Built a production Model Context Protocol (FastMCP) server and autonomous ReAct agent over stdio, exposing tenant-isolated vector search and Self-RAG tools directly to Claude Desktop and Cursor IDE with zero unauthorized cross-boundary leakage.
  • Live Demo: deepalign-rl.streamlit.app
  • Implemented DeepSeek-style Group Relative Policy Optimization (GRPO) and DPO from scratch in PyTorch, standardizing group-wise advantages to eliminate the critic model and cut peak training VRAM by ~50%.
  • Engineered a zero-noise SymPy symbolic reward verifier and AST sandbox for mathematical equivalence and Chain-of-Thought format compliance, achieving 74.8% GSM8K / 49.3% MATH accuracy across automated ablation suites.
  • Live Demo: flowmatch-compress.streamlit.app
  • Implemented Optimal Transport Flow Matching (OT-CFM) and DiT with AdaLN-Zero from scratch in PyTorch, developing two-stage distillation (CFG + progressive trajectory consistency) to eliminate dual-pass evaluations and compress 50 ODE steps into 4 (22.05× inference speedup).
  • Engineered a modular Post-Training Quantization (PTQ) suite supporting IEEE FP8 (E4M3), per-channel INT8, and grouped INT4 with activation calibration, slashing model footprint by up to 56.3% with minimal discretization drift.
  • Integrated an AutoencoderKL VAE latent pipeline ($4 \times 32 \times 32$ latent space) for high-resolution $256 \times 256$ generation, validated against photographic benchmarks and visual ODE trajectory profilers.
  • Built a hybrid deep learning ensemble (Attention-LSTM + Ridge Regression) achieving 75% directional accuracy.
  • Exported the PyTorch computational graph to ONNX Runtime and deployed on serverless AWS Lambda (<100ms cold-start latency).
  • Live Tableau Dashboard: Public Tableau Visualization
  • Engineered quantitative data models across 50,000+ records, evaluating diagnostics via AUC-ROC, KS statistic, and Gini coefficient.

🛠️ Tech Stack & Tooling

Languages & Core

Python SQL TypeScript C++

Generative AI, Agents & Vector Systems

LangGraph Anthropic MCP LangChain Hugging Face pgvector FAISS Pinecone

Machine Learning, Optimization & Serving

PyTorch ONNX Scikit-learn XGBoost Pandas PyArrow

Cloud, Backend & DevOps

AWS GCP FastAPI Docker pytest Git

Business Intelligence & Observability

Tableau Power BI MLflow Streamlit

Library Usage

✍️ Latest Technical Articles & Publications


📊 GitHub Analytics

Profile Details
Stats Top Languages

GitHub Streak

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  1. Multi-Tenant-SaaS-Platform-with-an-AI-Product-Assistant Multi-Tenant-SaaS-Platform-with-an-AI-Product-Assistant Public

    A production-shaped SaaS foundation: many isolated customer workspaces served from a single codebase and a single Postgres schema, plus a retrieval-augmented assistant that answers questions from e…

    Python

  2. Olist-Ecommerce-Intelligence Olist-Ecommerce-Intelligence Public

    Enterprise Causal Decision & Experimentation Platform on 100K+ real Olist orders. Features CUPED variance reduction (30–50% test duration cuts), CausalML Uplift Modeling (CATE/X-Learner), Doubly Ro…

    Python

  3. Agentic_RAG_Knowledge_Search Agentic_RAG_Knowledge_Search Public

    A production-ready AI Microservice that uses an Agentic Router to intelligently decide between retrieving answers from user provided documents (RAG) or searching the live web and does self-Evaluation

    Python 1

  4. Financial-forecasting-pipeline Financial-forecasting-pipeline Public

    An end-to-end volatility forecasting pipeline for equity ETFs — LSTM + attention and a stacked ensemble, with Hydra config, MLflow tracking, ONNX export, and a FastAPI / AWS-Lambda serving layer

    Python

  5. Credit-Risk-Scoring-Model Credit-Risk-Scoring-Model Public

    Probability-of-default (PD) scoring on 50,000+ real Lending Club loans, from multi-format data wrangling through a stacked XGBoost + Logistic Regression model, credit-scorecard scaling, and stakeho…

    Python

  6. MedSeg-Explainable-Equitable-Medical-Segmentation-Pipeline-old MedSeg-Explainable-Equitable-Medical-Segmentation-Pipeline-old Public

    Multi-class semantic segmentation of nuclei in H&E histopathology, paired with the explainability, fairness, and monitoring layer that healthcare AI needs in practice.

    Python