Sylvain Corsini

Cloud Engineer — GenAI Team

Betclic Group · Bordeaux, France

Cloud and platform engineer in the Generative AI team, building and running the infrastructure behind Betclic's internal LLM products.

Infrastructure behind the Generative AI team's internal LLM products: run the centralised LLM gateway (LiteLLM) in front of Azure AI Foundry, AWS Bedrock and OpenAI, several million tokens per hour, per-team quotas and cost tracking.

• Run the centralised LLM gateway (LiteLLM) in front of Azure AI Foundry, AWS Bedrock and OpenAI Platform: several million tokens per hour across regions, with per-team quotas, rate limiting and cost tracking.
• Deployment, scaling, observability and cost-efficiency of the team's AI workloads on AWS and Azure.

• LiteLLM
• Azure AI Foundry
• AWS Bedrock
• OpenAI
• AWS
• Azure

Cloud Engineer — Online Team

Asobo Studio · Bordeaux, France

Designed and ran the cloud infrastructure behind Microsoft Flight Simulator 2024's online services.

Cloud infrastructure behind Microsoft Flight Simulator 2024's online services: an internal platform (Helm, CDKTF, CI/CD) for shipping to Kubernetes, autoscaling for spiky game traffic, ML and GPU infrastructure, on-call from launch through the live service.

• Built the internal platform layer (a Helm framework, a Python CDKTF library and CI/CD templates) that let application teams ship to Kubernetes with minimal effort.
• Tuned the Kubernetes clusters for spiky game traffic with event-driven autoscaling and zero-downtime deployments.
• Built and ran the ML infrastructure for the data and world teams: GPU clusters and the ML workloads behind the game's world data.
• On-call, incident response and post-mortems through the day-one launch and the live service that followed.

• Kubernetes
• Helm
• CDKTF
• Python
• PowerShell

Backend Developer

ENACO, Whatwapp · Roubaix, Milan · freelance

Two short missions, in e-learning and mobile games.

ENACO's e-learning platform (architecture, Node.js APIs on GCP, move to GKE); a real-time leaderboard and matchmaking for Whatwapp's mobile games.

• ENACO, an online business school: led the architecture and build of the new e-learning platform, Node.js APIs on GCP (Cloud Run, MongoDB Atlas, Terraform), workloads moved from serverless to GKE for scalability and cost.
• Whatwapp, mobile games: an optimised real-time leaderboard and a matchmaking system.

• Node.js
• TypeScript
• GCP
• Terraform
• GKE

Lead Backend Developer

Virtual Regatta · Villeneuve-d'Ascq, France

Led the backend team and ran the game's whole AWS infrastructure: core servers and live services for real-time races with up to a million concurrent players.

Led the backend team and the whole AWS infrastructure of a real-time racing game (up to a million concurrent players): migration off GameSparks to a serverless stack as infrastructure as code (CDK, Lambda, Step Functions, DynamoDB), on-call, engine rewritten from Node.js to Go (from 5 minutes down to 10 seconds).

• Infrastructure: led the full migration off GameSparks to a custom serverless AWS stack (Lambda, Step Functions, API Gateway, DynamoDB), as infrastructure as code (CDK) with mirrored dev and prod environments.
• Rewrote the asynchronous game engine from Node.js to Go, cutting processing time from about 5 minutes to 10 seconds and lowering operating cost.
• Owned reliability end to end: on-call, incident response and post-mortems through major live events.

• AWS
• CDK
• Lambda
• DynamoDB
• Go
• Node.js

Technical Lead

Adfinitas · La Madeleine, France

internship 2018 → apprenticeship 2018–20 → technical lead 2020–22

Led the technical team, internal and client projects, and the whole infrastructure; advised on GDPR compliance and data management.

Led the technical team and the whole infrastructure, serverless on GCP: Calicut, an event-driven webhook platform (thousands of requests per second), GDPR-compliant data lakes, client migrations to GCP.

• Infrastructure: designed and ran the whole infrastructure on GCP (serverless), and migrated clients to GCP.
• Calicut: an event-driven webhook platform handling thousands of requests per second to automate client workflows such as emails and unsubscriptions.
• GDPR-compliant data lakes and multi-tenant apps, including Prometer (NPS collection and lead generation).

• GCP
• Serverless
• Go
• Svelte