Jules Royet
FR

ORANGE · 2022 to 2025

Enterprise Carbon Footprint Calculator

Enterprise Carbon Footprint Calculator for Telecom E-Commerce

Shopeen ecological footprint calculator
Role
Full Stack Engineer (Apprenticeship)
Timeline
2022 to 2025
Context
Orange Online Store Team
Infra
Spring Boot • Kotlin • Svelte • MongoDB • Kubernetes

Developed an internal platform evaluating the greenhouse gas emissions and electrical consumption of server racks, microservices, and network hardware powering the Orange web store.

The Challenge: Quantifying Microservice Environmental Impact

Evaluating the environmental footprint of an e-commerce platform serving 600,000+ yearly visitors requires factoring in CPU utilization, memory allocation, storage lifecycles, and datacenter PUE (Power Usage Effectiveness). Shopeen provided a standardized calculator adhering to INR standards.

Reactive Full-Stack Architecture

Built with a Spring Boot and Kotlin reactive backend, paired with Svelte on the frontend for minimal client-side JavaScript execution overhead. Data pipelines ingest hardware telemetry into MongoDB with automated aggregation jobs.

Key Engineering Challenges

  1. 1

    Aligning algorithmic models with French ADEME carbon emission factors.

  2. 2

    High test coverage (85%+) with JUnit, Hurl, and Cypress in GitLab CI.

Key Results

600,000+
Yearly visitors analyzed
87%
Test coverage
< 45 KB
Bundle size
INR & Green IT
Compliance

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