Tim De Winter

Steering the strategy and technical implementation for a LegalTech start-up. Design of a resilient Big Data & Generative AI architecture.

DevOps, Cloud & Infrastructure

● Hybrid Architecture: Design of a distributed Kubernetes cluster, coupling the power of AWS Cloud with On-Premise nodes for sensitive data processing.

● Infrastructure as Code (IaC): Full provisioning via Terraform and Helm, deployment management via ArgoCD, ensuring complete environment reproducibility.

● Network & Storage: mTLS communication between nodes, ingress traffic via modern Envoy gateway, persistent distributed storage, and Longhorn disaster recovery.

● Data Lakehouse: Building a high-performance S3 Data Lake (Minio/AWS), orchestrated by Apache Airflow. Cold data processing via DeltaLake, Pandas, and Arrow.

● Serverless Analytics: Implementation of a log and traffic analysis system via AWS Athena (on CloudFront logs) for low-cost SEO and security monitoring.

Artificial Intelligence & MLOps

● Advanced RAG: "Retrieval-Augmented Generation" architecture using Qdrant (vectors) and OpenSearch (semantic/full-text search) to contextualize LLMs.

● AI Workflow: Orchestration of autonomous agents via LangChain/LangGraph. Fine-tuning models via Label Studio and monitoring generation quality (hallucinations/coherence) via Langfuse.

● Event-Driven Backend: Decoupled Nest.js (TypeScript) API, using BullMQ for massive asynchronous processing and AI worker orchestration.

● 360° Observability: Complete stack Prometheus, Grafana, Loki, Jaeger. Custom instrumentation for tracking business metrics (DMARC, Business KPIs).

● Frontend Performance: React (SPA) and Astro (SSR) applications optimized for Core Web Vitals. Management of a Turbo Monorepo and a Design System documented in Storybook.

Responsible for back-end ELT development for a high-volume B2B marketplace (millions of products and thousands of customers). Creation of a serverless data ingestion solution. Integration with AWS via TypeScript CDK. Local emulation with Localstack. Ingestion into Opensearch, optimization of batching indexes and FinOps.

Web/Mobile Front-end Development

● Participation in the development of an instant messaging solution (custom fork of Mattermost), available as a WebApp (React) and mobile application (React Native).

● Front-end Development within kSuite, the collaborative space bringing together Infomaniak's sovereign tools.

● Contribution to the creation and evolution of the Front-end architecture through the implementation of a Design System (Stencil.js).

● Integration of Storybook for component documentation. Ensuring the quality and stability of deliverables through the integration of end-to-end (E2E) tests.