Selected machine learning work spanning production LLM agents, retrieval systems built from scratch, applied forecasting, and ML surrogates that accelerate first-principles numerical solvers.

LLM Agents Retrieval & RAG Time-Series Forecasting Causal Inference GPU / ML Surrogates
Machine learning

LLM & Retrieval Systems

Adaptive LLM Tutoring Agent

Data Scientist (Contract) · Faculty AI, London — 2025

Deployed an adaptive LLM agent for Python education: generates a personalised learning roadmap per student, tracks progress in real time, and produces structured reports for students, parents and teachers — end-to-end from interaction data to deliverable output. Built the learning-map engine sequencing lessons to each student's level, iterated across diverse learner profiles.

LLM agent designPersonalisationNLPStructured reporting

Hybrid Retrieval Document-QA System

Independent — from scratch, no retrieval frameworks

Built a retrieval-augmented QA engine combining BM25 lexical scoring with dense embedding similarity, fused with reciprocal rank fusion, exposed through a Streamlit query interface — every scoring component hand-written rather than assembled from a framework.

BM25 (handwritten)Sentence-TransformersReciprocal rank fusionStreamlit
View repository →

Transformer-Based Market-Commentary Generator

Machine Learning Engineer (Freelance) — 2022 – Present

Full pipeline from source to generated text: automated scraping via Playwright (Cointelegraph, Decrypt, CoinDesk), memory-efficient preprocessing with HuggingFace Datasets, and domain-specific language-model fine-tuning for automated commentary.

PlaywrightHuggingFace DatasetsLLM fine-tuningPyMuPDF

LLM Customs Classification Pipeline

Freelance client engagement — logistics & trade compliance

A staged LLM pipeline that enriches and validates HS (Harmonized System) customs codes at scale: prompt generation, LLM inference, rule-based post-processing and a Streamlit review step, run as independently testable phases rather than one script.

Prompt engineeringStructured extractionRule validationStreamlit review

Forecasting & Applied ML

Multi-Model Demand Forecasting Suite

NYC Citibike — Machine Learning Engineer (Freelance)

Engineered a forecasting suite (ARIMA, Prophet, Exponential Smoothing, XGBoost, LSTM, Gaussian Processes) for bike-share demand — a 12% accuracy improvement enabling a 25% cost reduction in fleet redistribution.

ARIMAProphetLSTMGaussian Processes

Customer Churn Prediction

Machine Learning Engineer (Freelance)

Random Forest, XGBoost and ANN churn models achieving a 15% improvement in retention-strategy effectiveness, deployed as scoring APIs for downstream product use.

Random ForestXGBoostANNScoring APIs

Causal Inference & Anomaly Detection

Data Scientist (Contract) · Extellio — 2025 – 2026

Built causal-inference models on large-scale behavioural data to estimate true effect beyond correlational readouts, plus anomaly-detection systems flagging irregular user and traffic patterns; designed A/B tests and automated analytics dashboards for product and engineering stakeholders.

Causal inferenceA/B testingAnomaly detectionDashboards

Physics-Informed ML & Scientific Computing

CUDA logo

GPU-Accelerated Thermodynamic (PVT) Engine

Research Scientist · Stealth-mode Startup, with L'CADAME/UFRJ — 2025 – Present

CUDA C++ (NVCC / C++17) engine from first principles: cubic equations of state (SRK/PR), multiphase flash, stability analysis, phase-envelope construction, excess-Gibbs mixing rules (Huron-Vidal/NRTL). Now developing ML surrogate models of the flash solver to cut iterative cost toward real-time flow simulation — validated to production tolerances against a commercial reference; export pipelines feed LedaFlow and PIPESIM for production, flow-assurance and CCUS applications.

CUDA C++Cubic EoSML surrogatesMultiphase flash

Reduced-Order Model for Boundary Layer Flow

Research Associate (Computational Scientist) · Imperial College London — 2023 – 2024

Regression + dimensionality reduction over DNS-LES boundary-layer data, cutting simulation time from several weeks to a single day. Demonstrated a potential 10% drag-force reduction with direct implications for aerospace fuel cost, contributing to peer-reviewed output.

PCARegressionHPCCFD

Open Source

Machine Learning Projects

github.com/Pasha0313/MachineLearning

Source behind the projects above — LLM pipelines, retrieval, forecasting, and applied ML experiments — plus course work and notebooks.

View repository →

More background on skills & tools · full history on LinkedIn · code on GitHub