Freelancer profile translated to English.
Back to original languageAbout Sebastien
Hello,
I am aCertified AWS Architect & Backend Leadwith over 10 years of experience in complex backend projects and high-stakes cloud architectures.
Among my achievements:
— Founding Engineer at 2501.ai: designed the backend architecture for an AIOps platform based on autonomous AI agents for incident remediation in enterprise environments (production LLM integration, open-source model evaluation, agentic architectures).
— Put into production a real-time payment system for Total Energies, deployed across the European service station network.
— Designed a matchmaking platform for Riot Games (League of Legends), serving several million players in Europe.
— AWS audit for an international fintech, identifying nearly $10,000 in monthly savings.
Here's how I can support you:
Services offered:
— AWS Architecture & Audit (Security, FinOps, Scalability)
— Backend Lead on Complex Projects (Microservices, Event-Driven, Distributed Systems)
— LLM / AI Agent Integration in Enterprise Environments (RAG, Autonomous Agents, Model Evaluation)
— Fractional CTO / Technical Consulting for Early-Stage Startups
Main Stack:
— Backend: TypeScript / Bun / NestJS, Rust (Actix/Tokio), Python
— Data: PostgreSQL, Redis, ElasticSearch, MongoDB
— Cloud: AWS (Certified SAA-C03), Docker, Kubernetes, KVM
— IaC & Security: Terraform, Vault, AWS KMS/SSM, CloudFormation
— Events: Kafka, RabbitMQ, SQS
Feel free to contact me to discuss your project.
English
Native or bilingual
French
Native or bilingual
Remote only
Primarily works remotely
Experience
- 2501.aiFounding EngineerSOFTWARE PUBLISHINGAugust 2024 - May 2026 (1 year and 9 months)Founding Engineer at 2501.ai, an AIOps startup developing autonomous AI agents for IT incident remediation in enterprise environments (on-premise infrastructure, sovereign inference).Main responsibilities:— Design and development of the agentic architecture and backend (TypeScript / Bun, PostgreSQL, KVM).— Deployment of a multi-VPC AWS infrastructure (NetApp/ONTAP, NFS) for a major US bank's client demo, contributing to the signing of a strategic enterprise contract.— Prompt engineering and evaluation of open-source models to ensure reliability and optimize agents in production.— Member of an engineering team of 10 people delivering agents in production to large enterprise clients.
- Blacksmith StudioCTO as a ServiceSOFTWARE PUBLISHINGSeptember 2023 - July 2024 (10 months)Paris, FranceI assist Blacksmith in executing their clients' projects, prepare quotes, and communicate with the team daily.I primarily focus on overseeing the entire backend design and AWS infrastructure for a Web3 Marketplace.
- GreenscopeSenior BackendSOFTWARE PUBLISHINGJuly 2023 - September 2023 (2 months)Paris, FranceWith the CTO, we designed new features to evolve Greenscope.io's proposed solution. We discussed how to design the backend, and I developed new features in NextJS.
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Education
- AWS Solutions Architect AssociateAWS2023https://www.credly.com/badges/63e42e1f-9dcc-4d0c-813f-7fd9ed8b55ee/public_url
- Degree in New Technologies Developer (CQP) iOS/Android/ASP.NETF2I Paris Vincennes2013
Certifications
- AWS Security best practicesAWS2020
- AWS Certified Solutions Architect Associate SAA-C03AWS2023