Seniorbackend&DevopsEngineer

🎯 CONTEXT Vizzia's IoT platform is what lets operations teams monitor the fleet of cameras deployed across French local authorities, get alerted when something breaks, and intervene before it impacts a city. FleetAPI, device provisioning, the routing and monitoring services — these are the backend systems that carry the day-to-day product. 250+ local authorities now rely on Vizzia to keep their streets clean and safe. As the fleet grows, the backend services that power monitoring, alerting and intervention need a dedicated owner: someone who ships robust APIs, keeps the services reliable in production, and makes the underlying AWS infrastructure evolve when the product needs it to. You will join a 4-person team (Tech Lead, PM, one engineer, one incoming full-stack hire) reporting to Wilfried as Tech Lead. Your mission: develop, maintain and evolve the backend and cloud services of the IoT platform — with the backend side as the core of your day-to-day, and the cloud side as the foundation it runs on. 🛠️WHAT YOU'LL DO 1. Backend services and APIs for fleet monitoring, alerting and intervention - Develop and maintain the backend services that give operations teams the tools to monitor the camera fleet, get alerted, and intervene. - Ship APIs and backend services in Python / Node.js / TypeScript that are robust, tested, observable, and documented. - Own the evolution of the existing APIs and the surrounding services as the product and the fleet grow. 2. IoT verticals ownership - Within the first 6 months, take ownership of one major technical domain : provisioning, fleet drift detection, or the routing & monitoring stack, with a measurable improvement on either reliability or operational quality. - Work day-to-day with the OpenVPN multi-shard architecture and the router fleet: connectivity, segmentation, scaling the shards horizontally as the fleet grows. 3. AWS architecture and Infrastructure as Code - Handle the AWS architecture supporting the team evolves where th