SENIOR FULL STACK DEV.·PLATFORM IMPROVEMENT·2024 - 2025

Storengy: ENGIE

SENIOR FULL STACK DEV.

Rebuilt core features of a gas storage access system. Cut page load by 35%, form latency by 50%.

Remote, France, Energy

THE STACK

AngularAngular MaterialTypeScriptSCSSREST APIsAJAXPHPDoctrineSymfonyAWS S3AWS Lambda

LINKS

Visit Site

CASE STUDY

Rebuilding Storengy's Access Management System

The Problem

Storengy manages gas storage sites in France. Their internal access management system — used to control who can enter which sites — was slow, clunky, and frustrating for users. Page loads were sluggish, forms lagged, and the developer experience was poor enough that the team was losing velocity.

What I Did

Rebuilt core features of the access management system (Angular 14, REST APIs, AJAX), targeting the worst performance offenders.
Delivered a new UX/UI design using Angular Material for key features, focused on reducing navigation time.
Proposed and led a Developer Experience (DX) initiative to streamline internal processes and reduce friction in the development workflow.
Collaborated with a team of four fullstack developers.

The Result

35% reduction in page load time.
50% reduction in form latency.
20% increase in user satisfaction due to reduced navigation time.
15% improvement in team productivity — saving an average of 10 hours per week per developer.

Key Decision

The DX initiative wasn't in my brief — I proposed it after seeing how much time the team was losing to process friction. Improving developer velocity had a multiplier effect: every feature after that shipped faster.