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cheugs/README.md

Hi, I'm Marie Louise Chengho Fongang

Data engineer and data scientist in training, with a full-stack background (Angular, Spring Boot).

I am a fourth-year computer science student. I build data platforms end to end: streaming pipelines, data warehouses, forecasting models and the dashboards that make the results usable. The data projects below are documented in French and English, the pipelines are tested in CI, and most have a live demo.

Open to: Data Engineering · Data Science · AI Engineering · Data Analysis · Full-Stack Development (Angular / Spring Boot)

Featured projects

Data engineering

Project What it does Stack Demo
Retail Inventory & Supply Chain Warehouse Star-schema warehouse answering where stock is missing, which suppliers deliver on time and how fast inventory turns. Refreshed every morning by GitHub Actions; 14 of 14 reconciliation checks pass. dbt · PostgreSQL · Airflow · Docker · GitHub Actions Live dashboard
Smart City Mobility Data Platform Streaming platform for traffic sensors and public transport events with geospatial joins. 1,000,000 events processed with 0 lost and 0 duplicated. Kafka · PySpark Structured Streaming · PostGIS · Airflow · Grafana Live demo
Real-Time Financial Transaction Platform Payment monitoring pipeline with a live dashboard. About 3,000 events/s end to end on a laptop, 2.5 s median latency, no loss under a 1M-event burst. Kafka · PySpark · PostgreSQL · dbt · Streamlit Live dashboard

Data science and analysis

Project What it shows Stack Demo
Electricity Demand & Renewable Energy Forecasting Day-ahead demand forecast for Germany with 1.9% error, against 4.3% for the seasonal naive baseline and 2.6% for SARIMA. Errors translated into reserve requirements. Python · XGBoost · SARIMA · pandas Notebook
Credit Risk & Financial Inclusion Study Explainable default model on 1,000 real bank loans, with a cost-based decision threshold, SHAP explanations and a fairness audit by age group. Python · scikit-learn · SQL · SHAP Report (PDF)
Climate Risk & Human Development Observatory Tests whether the most climate-exposed regions are also the least developed, across 105 regions in France, India and the USA, using public data. Python · statistics · data visualisation Live dashboard

Full-stack

Project What it is Stack
Logistics Tracking Frontend Parcel tracking application with separate dashboards for customers, delivery agents and administrators. Angular · TypeScript
E-Quiz Admin Dashboard Administration dashboard for an online quiz platform. Angular · TypeScript

Team projects

Projects owned by teammates or team organisations, where I was one of the contributors. My part is stated for each.

Project What it is My contribution Stack
Logistics Tracking System (team of 5) Parcel delivery platform built as Java microservices: parcel, delivery, payment, notification and user services behind an API gateway, run with Docker Compose. Built the web frontend, including the administrator and delivery-agent dashboards, and contributed backend features. Angular · Java microservices · Docker
Gestion Immobilière Property rental management application for three roles: super administrator, owner and tenant. Built the Angular frontend (feature-based architecture, authentication, owner pages for room occupancy, arrears and reminders, tenant pages, contract and rent-receipt PDFs) and contributed backend features. Angular · Java (Maven) · SQL
MeetIn (team organisation) Meeting-room booking system for companies. Designed and built the admin side of the frontend (dashboard, user, room and booking management pages) and contributed backend features. Angular · TypeScript · Java
Online Reservation System (team of 4) Web reservation application built with Spring Boot. Worked on the page designs and user interface, and contributed backend features. Spring Boot · Java · HTML
EQuiz (team organisation) Online quiz platform with a web admin dashboard, a mobile app and a backend. Built the web admin dashboard and contributed backend features. Angular · TypeScript · JavaScript
Smart City web application (private repository) University group project: a Java web application for a smart city. Contributed to the tourist section. Java

Tech stack

Data engineering

Python SQL Apache Kafka Apache Spark Airflow dbt PostgreSQL Docker GitHub Actions

Data science and AI

pandas scikit-learn XGBoost Jupyter Streamlit Grafana FastAPI

Full-stack

Angular TypeScript Spring Boot Java

How I work

  • Results first: each project states the question, the answer and the numbers before the code.
  • Tested and reproducible: the data platforms run CI on every push, start locally with Docker Compose, and ship benchmarks you can rerun.
  • Honest about limits: synthetic data is labelled as synthetic, and each README lists what the project does not prove.
  • Bilingual: documentation in French and English.

Pinned Loading

  1. climate-risk-observatory climate-risk-observatory Public

    Do the regions with the most extreme climate also have the lowest human development? 105 regions in France, India and the USA, public data, statistical tests and an online dashboard.

    HTML

  2. credit-risk-financial-inclusion credit-risk-financial-inclusion Public

    Credit default study on 1,000 real bank loans: statistical tests, explainable logistic regression, cost-based decision threshold, SHAP and a fairness audit.

    Jupyter Notebook

  3. Electricity-Demand-Renewable-Energy-Forecasting Electricity-Demand-Renewable-Energy-Forecasting Public

    Day-ahead electricity demand and wind/solar forecasting for Germany (2015-2019) with SARIMA and XGBoost: 1.9% MAPE vs 4.3% for the seasonal naive baseline.

    Jupyter Notebook

  4. Real-Time-Financial-Transaction-Data-Platform Real-Time-Financial-Transaction-Data-Platform Public

    Real-time payment monitoring pipeline: Kafka, PySpark Structured Streaming, PostgreSQL, dbt and a live Streamlit dashboard. About 3,000 events/s end to end, zero loss.

    Python

  5. Smart-City-Mobility-Data-Platform Smart-City-Mobility-Data-Platform Public

    Streaming data platform for urban mobility: Kafka + PySpark Structured Streaming + PostGIS + Airflow + Grafana. 1M events processed with zero loss or duplicates.

    Python

  6. Retail-Inventory-or-and-Supply-Chain-Warehouse Retail-Inventory-or-and-Supply-Chain-Warehouse Public

    Star-schema retail data warehouse (dbt, PostgreSQL, Airflow) tracking stockouts, supplier OTIF and inventory turnover, refreshed daily by GitHub Actions with a live dashboard.

    Python