Portfolio · Calgary, AB

Stephen Situ

ML/AI Data Engineer  ·  Machine Learning · Data Engineering · Cloud · GenAI

Certifications

☁ Cloud

AWS Solutions Architect – Associate AWS Machine Learning – Specialty Azure Data Engineer Associate Microsoft Fabric Analytics Engineer Microsoft Fabric Data Engineer Snowflake SnowPro Core

⚙ Data Engineering

Databricks Data Engineer Professional Databricks Apache Spark 3.0 Developer Apache Airflow Fundamentals Airflow DAG Authoring IBM Data Engineering Foundations

◈ Machine Learning & AI

Databricks ML Professional Databricks Generative AI Engineer TensorFlow Developer Certificate LangGraph Foundations

⬡ DevOps & Infrastructure

GitHub Actions HashiCorp Terraform Associate (003) CKAD: Certified Kubernetes Application Developer

◉ Analytics

Google Data Analytics Professional Google Advanced Data Analytics

Achievements

🥉 2023 Zeroing Methane Emissions Datathon — 3rd Place

CDC-Climate Data Catalysts

Website ↗ Video ↗

🥈 2023 YYC Hacks Calgary — 2nd Place

YYC Winter Project

Event ↗ Project ↗

🏆 2024 YYC Hacks Calgary

Calgary Newcomer Statistics Dashboard

Event ↗ Live App ↗ GitHub ↗

Competitive Programming

⚡ LeetCode Profile — wssitu ↗

Generative AI / LLM

01 Using LangGraph to Create Agentic Graph Workflows for Text Classification & Sentiment Analysis → 02 Local RAG System with PyTorch and Ollama → 03 Math MCP Server & ReAct Agent — Demonstrating Tool Decoupling →

Full Stack Development

01
Calculator App — React frontend + Java Spring Boot backend
Frontend Repo Backend Repo Live Site Swagger UI
02 Golang Linear vs Concurrent Programming Benchmark →

Data Analytics / Data Science / Machine Learning

01Video Game Sales Analysis→ 02Gender Prediction Using Body Measurements — Random Forest→ 03Predicting Voting Behaviour Using XGBoost→ 04Python Data Cleaning — Car Sales Data→ 05Visualizing Canada Election Data→ 06Deep Learning Regression for Air Quality — TensorFlow/Keras→ 07Commodity Price Time Series — Seasonal Naive, ETS & ARIMA→ 08PCA on Credit Card Transaction Data→ 09SQL Querying Practice on Retail Sales Data→ 10Power BI Dashboard on Financial Data→ 11A/B Testing & Hypothesis Testing — Fast Food Marketing Campaign→ 12K-Means Clustering on Wine Data→ 13Twitter API — Word Frequency & Word Cloud→ 14Cohort Analysis & Customer Churn — Online Retail→ 15Monte Carlo Simulation — Tesla & Apple Stock Price→ 16Pumpkin Seed Classification — LDA, QDA, SVM→ 17Pumpkin Seed Classification — KNN→ 18Logistic Regression — Breast Cancer Diagnosis→
19
IBM Cognos Analytics Dashboard for Retail Sales
Part 1 Part 2 Part 3
20
Animal Multi-class Classification Neural Network — TensorFlow & TensorBoard
Notebook TB 1 TB 2 TB 3
21
Tweet NLP Classification — Naive Bayes, Dense NN, LSTM, GRU, BiLSTM, Conv1D, TF Hub
Notebook Embedding Projector
22Time Series Modeling — Temperature & Climate (FF NN, LSTM, Conv1D, Uni/Multivariate)→ 23Methane Emissions Computer Vision Model — CNN (2023 Datathon)→

Data Engineering

01Webscraping Real Estate Data — Python BeautifulSoup→ 02ETL Process on CSV, JSON & XML Files→ 03Apache Spark DataFrames — PySpark & Spark SQL→ 04Scikit-Learn Pipelines & Transformers for Data Preprocessing→ 05Advanced SQL Querying on IBM DB2 with SQLAlchemy→ 06CRUD Operations on MongoDB with pymongo→ 07CRUD Operations on DataStax Astra Cassandra→
08
Scheduling Cronjobs with Linux Shell & Bash
Notebook Cron Stock 2 Stock 3 Stock 4
09
Apache Airflow for Data Orchestration & Workflow Scheduling
1 2 3 4 5 6 7
10
Apache Kafka Streaming — Real-Time Data Pipelines
Producer Consumer
11FastAPI Deployment — Breast Cancer Logistic Regression on render.com→ 12Scalable Big Data Pipelines — Spark Pipelines & TF Data API→
13
Data Modeling — ERD, Fact/Dimension Tables, Star & Snowflake Schemas
Star Schema Snowflake Schema
14
MLflow — Experiment Tracking & Deployment for Elastic Net Regression
Notebook 1 2 3 4 5 6

DevOps

01 Rental Data Webscraper & ML Prediction — End-to-End FastAPI App in Docker →