Kévin L.

Evolution and optimization of the application ecosystem (SaaS / Business)

- Front & Performance Overhaul (Major Impact): Radical optimization of the Front-end application by identifying and removing an obsolete component library; result: build time and memory footprint divided by 10 (saving over 10 GB of RAM).

- Stack Migration: Led the migration of an Angular application to its latest version, including the successive and secure upgrade of associated Node.js runtime environments.

- CI/CD Optimization & Containerization: Redesigned and optimized multi-stage Dockerfiles to drastically reduce image build times and accelerate deployments via GitLab CI.

- Automation & Debt Management (MCO): Implemented and configured Renovate to automate dependency updates, securing the code lifecycle and reducing manual maintenance.

- Backend Development: Designed, optimized, and maintained performant, scalable APIs and microservices developed with NestJS.

Technologies: NestJS, Angular, Node.js, GitLab CI, Docker, Renovate, Git

Professional networking SaaS powered by AI (Deeptech)

- Data & AI Ingestion: Designed and optimized a massive import pipeline for over a million profiles, integrating an AI-powered automated Full-Text extraction system.

- DevOps & CI/CD: Fully automated the production deployment cycle by creating GitLab CI pipelines, ensuring continuous, secure, and uninterrupted service deployments.

- Infrastructure & Scalability: Robust and containerized deployment architecture using Docker and Traefik, ensuring high availability of the SaaS under heavy data loads.

- Core Dev & Database: Developed the application (NestJS / NuxtJS), integrated AI SDKs for recommendations, and optimized PostgreSQL indexing via Prisma for ultra-fast complex queries.

Technologies: NestJS, NuxtJS, GitLab CI, Docker, Traefik, PostgreSQL, Prisma, VERCEL AI SDK

Conversion Optimization Platform (SaaS)

- FinOps & Optimization (Major Impact): Reduced infrastructure costs by 20x and drastically cut client latency by redesigning and optimizing a data collector that was saturating resources.

- Cloud Architecture & IaC: Maintained, secured, and evolved the cloud infrastructure on GCP using Terraform and Terragrunt to industrialize environment management.

- Kubernetes Migration: Audited existing infrastructure and prepared technically (containerization, manifests) for migrating services to a Kubernetes cluster.

- CI/CD & Observability: Modernized GitLab CI pipelines and implemented a monitoring strategy for application performance and errors with Sentry.io.

Technologies: GCP, Kubernetes, Terraform, Terragrunt, GitLab CI, Docker, Sentry.io, MySQL, PHP Symfony, ReactJS, Shopify Remix, Python