Franck G.

• Designed and implemented fault-tolerant microservices in Node.js and Go from scratch, using MongoDB, Redis, and Cadence workflows; Cadence enabled reliable retry mechanisms and state management, reducing lead loss due to backend failures

• Participated in the successful migration of legacy PHP services to a scalable backend architecture, cutting hosting costs and tech debt

• Built a geospatial address resolution service using OpenStreetMap data with PostgreSQL/PostGIS, replacing Google Maps APIs and significantly cutting geolocation costs

• Designed and implemented from scratch a crypto trading system in Golang using Kafka and InfluxDB

• Created DIA, a blockchain oracles platform open source project for financial data

• Deployed and administered the stack on AWS instances using docker

• Designed and maintained Python microservices leveraging Kafka for event streaming and MongoDB for data storage, orchestrating real-time taxi dispatching and improving system scalability and reliability.

• Led the development of a new version of the iOS mobile application from scratch, implementing modern UI/UX, optimized performance, and seamless integration with backend services.

• Automated the generation of custom white-label mobile apps, reducing manual effort, speeding up release cycles, and ensuring consistent quality across multiple client deployments.