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sdivyanshu90/README.md
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AI Engineer building reliable LLM applications, applied ML pipelines, and AI infrastructure.

I work across the complete AI product lifecycle: data → models → evaluation → APIs → production.



Open to AI Engineer roles

Professional Experience

Founding Engineer @ Uniiq.ai
May 2026 – Present · Production AI, Backend Systems & Product Engineering
  • Built and stabilized an AI-driven student onboarding platform across React, Express, MongoDB, and Gemini, delivering a three-phase conversational intake with follow-up questions, persisted transcripts, profile completion, structured validation, rate limiting, and fallback handling.
  • Improved AI reliability through schema validation, retry handling for transient Gemini 503 failures, and recoverable API responses.
  • Implemented secure profile-completion enforcement across student APIs and UI workflows, including role-aware access controls and international phone-number capture.
  • Expanded institution and opportunity administration with deep-partial updates, nested MongoDB normalization, validation, and source/external-ID uniqueness safeguards.
  • Added 1,199 lines of automated tests across 12 modules to strengthen regression coverage across critical workflows.
  • Improved frontend delivery by code-splitting 21 routes, refining vendor bundles, reducing Shiki payloads, enabling gzip and immutable asset caching, and introducing Lighthouse performance budgets.
  • Reduced the documented primary build entry from 1.45 MB to 278 KB, with an 81 KB gzipped artifact.
ML Researcher @ Yale University
October 2025 – March 2026 · Secure Deep Learning & Compiler-Centric MPC
  • Developed components for a secure, open-source deep-learning framework from first principles using Python and NumPy, without relying on external autograd frameworks.
  • Worked on a compiler-centric Multi-Party Computation architecture for privacy-preserving collaborative AI training.
  • Contributed cryptographic and neural-network components to the open-source sequre ecosystem.
  • Designed and trained a custom CNN with strided convolutions, achieving 88.08% test accuracy on the ChestMNIST benchmark in the documented experimental setup.
Quantitative Research Consultant @ WorldQuant BRAIN
November 2022 – July 2025 · Alpha Research & Workflow Automation
  • Built and automated 15+ quantitative-signal research workflows using Python and the WorldQuant simulation environment.
  • Replaced repetitive manual backtesting processes with automated signal-generation and evaluation pipelines.
  • Developed models with a documented average simulated Sharpe ratio of 1.8.
  • Ranked in the Top 1% globally and achieved Gold Level in the WorldQuant BRAIN Global Alphathon 2022.

Technical Stack

AI & Machine Learning PyTorch TensorFlow Hugging Face LangChain LLM evaluation and security Multi-Party Computation
Speech & NLP Whisper Librosa ASR Indic NLP Voice activity detection
Backend & Data FastAPI Express MongoDB PostgreSQL Qdrant Server-Sent Events
Product Engineering React TypeScript Vite REST APIs Role-based access control
MLOps & Infrastructure AWS Docker MLflow Airflow CI/CD
Languages Python C++ SQL

Featured Projects

Natural-language analytics over a transactional knowledge graph.


Graph Data Explorer technology

  • Transformed 21,393 transactional records across 19 relational tables into a knowledge graph containing 765 nodes and 877 edges.
  • Implemented a two-stage LLM orchestration pipeline with query classification, validation, graph traversal, and answer generation.
  • Delivered the system through a FastAPI backend and React interface with real-time streaming using Server-Sent Events.

End-to-end Hindi speech-recognition training, normalization, and evaluation pipeline.


Indic ASR technology

  • Fine-tuned Whisper-small using SpecAugment, label smoothing, and cosine learning-rate scheduling.
  • Built a Devanagari normalization engine with phonetic reverse transliteration to handle spelling variation and loanwords.
  • Combined five ASR outputs through word-level consensus evaluation and achieved a documented greater than 48-percentage-point absolute WER reduction against the stated baseline.

Privacy-preserving collaborative AI research at Yale University.


Secure ML technology

  • Developed deep-learning components from first principles without an external autograd framework.
  • Worked on compiler-centric MPC architecture and contributed to the open-source sequre ecosystem.
  • Designed a custom CNN that achieved 88.08% test accuracy on ChestMNIST in the documented evaluation.

Deep-learning experiments for particle-physics problems in the ML4SCI ecosystem.


ProblemPioneer technology

  • Developed ResNet-style and custom CNN architectures for photon identification and quark/gluon classification.
  • Explored graph-neural-network architectures for momentum regression on high-dimensional detector data.
  • Compared GCN and GAT approaches across accuracy, complexity, and latency considerations.

Retrieval-augmented generation for biomedical question answering.


BioMed Retrieval technology

Combined biomedical embeddings, Qdrant vector retrieval, and domain-focused generation to build a specialized scientific question-answering pipeline.

Awards & Achievements

WorldQuant Gold Level Global Alphathon Top 1% Kaggle 2x Expert 3000+ algorithmic problems

LeetCode Knight CodeChef rating TensorFlow Developer Certificate

GitHub Activity

GitHub statistics GitHub streak

Current Focus

Production LLM Applications · Applied Machine Learning · AI Infrastructure · Secure AI


GitHub followers

Pinned Loading

  1. Graph-Data-Explorer-AI Graph-Data-Explorer-AI Public

    Python 1

  2. build-your-own-inference-server build-your-own-inference-server Public

    Rust 1

  3. FromScratchQuant FromScratchQuant Public

    Python 1

  4. graph-rag-from-scratch graph-rag-from-scratch Public

    Python 1

  5. ProblemPioneer ProblemPioneer Public

    ML4SCI Task Solutions

    Jupyter Notebook 1

  6. 0xTCG/sequre 0xTCG/sequre Public

    A high-performance, Pythonic framework for secure computing

    Jupyter Notebook 27 4