Guillaume Surroca

Leading the technical evolution as an all-stack engineer, architecting and delivering cloud-native solutions for Smart City parking infrastructure across Europe and Asia-Pacific. Architected event-driven microservices with NATS for real-time vehicle detection and payment processing, handling high-throughput IoT data streams from 35,000+ connected meters. Integrated WebAssembly to port critical business logic into JavaScript environments, unifying the tech stack while maintaining performance and type safety. Built AI-powered tooling with LangChain and RAG to automate data transforms and accelerate development workflows, reducing manual engineering overhead. Delivered end-to-end production systems spanning React frontend, Go/Node.js backends, GraphQL APIs, and MongoDB, with multi-cloud deployments (GCP, AWS) and Kubernetes for zero-downtime releases.

Senior Full Stack Engineer driving the development of an enterprise trade finance infrastructure processing over $1B+ daily transactions for 300+ multinational corporates and global banks. Operated in a fast-paced environment requiring constant context-switching between frontend, backend, data, and DevOps domains. Delivered end-to-end product features across two complete technology stacks: JavaScript/TypeScript frontends (React/Redux, GraphQL, Prisma, MongoDB microservices) and Java-based backends (Kotlin/Java, Spring, Hibernate, PostgreSQL). Built robust frontends and backends, exposed APIs for digital letters of credit, and established production-ready CI/CD with multi-cloud deployments.

Delivered features across two technology stacks (Go/Node.js backend, React frontend, GraphQL APIs, PostgreSQL/MongoDB) for a FinTech/trade finance platform handling large-scale transactions. Built CI/CD pipelines across multi-cloud deployments, implemented monitoring and log aggregation, and leveraged Kubernetes orchestration to ensure reliability for mission-critical financial services.