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mohpezeshki/README.md
Mohammad Pezeshki — AI / Machine Learning Engineer

Hi, I'm Mohammad

AI/ML engineer with a software-engineering foundation. I work across the full path from model to product: training and fine-tuning deep learning models, building LLM-backed systems with retrieval and structured outputs, and deploying them as real services rather than leaving them in notebooks.

What I focus on

  • LLM systems — RAG pipelines with hybrid retrieval and reranking, LoRA fine-tuning, prompt design for structured JSON outputs, hallucination guardrails, and evaluation that goes beyond eyeballing answers.
  • Deep learning — CNNs and transformers in PyTorch, transfer learning, and computer vision including 3D perception on point clouds.
  • Classical ML — gradient boosting, embedding models, and the unglamorous baselines that tell you whether a neural network is even worth training.
  • Production engineering — FastAPI, WebSockets, Postgres, Docker, and React frontends, so the model reaches a user.

I also work on decision-making under uncertainty — Markov Decision Processes and Bayesian methods — in a research context.


Selected work

LLM and retrieval systems

Project What it is
Speak Fill Voice-dictated form filling. The browser streams 16 kHz PCM over a WebSocket to a FastAPI backend running faster-whisper in-process, reconstructing an interim/final transcript contract through polled re-transcription with bounded chunk commits. An LLM maps free-form speech onto an arbitrary form schema as {field_key: value} JSON, with an explicit null contract for low-confidence values and anti-cross-fill constraints. Runs against GPT-4o-mini or a local Qwen2.5-7B-Instruct behind one provider flag.
Spotify Song Recommendation Word2Vec trained on playlists-as-sentences — 157K playlist sequences, a 2.7M-track vocabulary, recommendations by cosine similarity in embedding space. Postgres trigram search, live metadata enrichment, React 19 + Tailwind frontend.
Plant Identifier & AI Care Assistant A fine-tuned EfficientNet identifies 50 houseplant species; an LLM generates location- and season-aware care advice with Pydantic-structured outputs, hallucination guardrails, and response caching. Deployed on Hugging Face Spaces.

Modeling and data

Project What it is
Higgs Boson Detection Deep feedforward network vs XGBoost on the UCI HIGGS dataset (28 features, 11M events). XGBoost led on AUC (0.81 vs 0.74) and calibration (Brier 0.18 vs 0.26); the network won on recall (0.77 vs 0.32) and F1 (0.76 vs 0.48) — a clean illustration of the precision/recall trade-off between model families.
LinkedIn Scraper Python client covering 45 endpoints of the Fresh LinkedIn Scraper API — jobs, profiles, companies, posts, ads, groups — with input validation on every category.

Toolbox

Deep learning & LLMs

Python PyTorch Hugging Face LangChain OpenCV Open3D scikit-learn

Engineering

FastAPI WebSockets Docker PostgreSQL SQLAlchemy React TypeScript C++


Background

Education

  • M.Sc. Computer Engineering in Artificial Intelligence — University of Padova. Focus on computer vision, 3D perception, robotics, and decision-making models. Thesis on an MDP-based automated experiment-design framework.
  • B.Sc. Computer Engineering — Persian Gulf University.

Academic projects

  • 3D point cloud matching with PointNet — a modified PointNet architecture producing 3D descriptors for point-cloud alignment, with improved robustness in noisy environments.
  • Food recognition and segmentation — a CV pipeline detecting and segmenting food items, comparing remaining against original portions.

Earlier career

Two and a half years as a senior mobile developer — React Native, Kotlin, Flutter — shipping to real users. It's why the ML work here tends to come with a working frontend attached.

Certifications

Deep Learning Specialization and Machine Learning Specialization, DeepLearning.AI.

Languages

English (professional working) · Persian (native) · Italian (basic)


Get in touch

LinkedIn Email   Followers Stars

Open to conversations about LLM systems, deep learning, and applied ML.

Pinned Loading

  1. speak-fill speak-fill Public

    Voice-dictated form filling. Build a form, then fill it out by talking instead of typing — speech is transcribed in real time by an LLM maps what you said onto the right fields.

    TypeScript

  2. Spotify-Song-Recommendation Spotify-Song-Recommendation Public

    A song recommender built on real Spotify playlist co-occurrence data. Type a track, pick it, and get back songs that tend to show up in the same playlists — enriched with real cover art and Spotify…

    Python

  3. Plant-identifier-and-ai-care-assistant Plant-identifier-and-ai-care-assistant Public

    Upload a photo of a houseplant and get back its species — plus a personalized watering, light, and seasonal care plan generated by an LLM. A CNN classifier identifies the plant, and a language mode…

    Jupyter Notebook

  4. Higgs-Boson-Detection Higgs-Boson-Detection Public

    Deep neural network vs XGBoost for Higgs boson signal detection on the UCI HIGGS dataset (11M events). Reproduces Baldi et al. (2014), Nature Communications.

    Jupyter Notebook

  5. Linkedin-Scraper Linkedin-Scraper Public

    Python client for the Fresh LinkedIn Scraper API (RapidAPI). Covers 45 endpoints — job search, user profiles, company data, posts, ads, groups, and search. Includes input validation for all categor…

    Python 1