Senior Fullstack Software Engineer at Vizzia

💡 MISSION At Vizzia, we're building a platform capable of deploying and operating multiple independent SaaS environments at scale. Your mission: design and deliver the cloud architecture that makes it possible — reliably, efficiently, and built to last. You'll work at the core of our platform: multi-tenant architecture, deployment infrastructure, identity management, and media processing systems. Beyond development, you'll raise the engineering bar — shaping architectural decisions and helping build a foundation that supports Vizzia's rapid growth. 🛠️ RESPONSIBILITIES 1. Multi-SaaS Architecture - Design and maintain isolated SaaS environments (Dev, Staging, Production, Demo) - Build modular platform components that make country-specific deployments frictionless 2. Cloud Infrastructure & CI/CD - Own our AWS infrastructure — reliability, security, and scalability are non-negotiable - Automate CI/CD pipelines and deployment processes to reduce operational friction 3. Backend & Distributed Systems - Build and maintain TypeScript / Node.js services at scale - Contribute to media pipelines where performance is measured in milliseconds 4. Identity & Access Management - Implement a centralized SSO layer across all platforms - Design role and permission systems that scale with the product 5. Technical Leadership - Guide architectural decisions and mentor engineers - Champion AI-assisted development tools (Claude Code, Cursor) across the team ✅ YOUR PROFILE - Strong backend engineering experience in TypeScript / Node.js - Proven track record designing cloud architectures on AWS - You've built or operated multi-tenant / multi-SaaS platforms before - Solid grasp of distributed systems and scalability trade-offs - Comfortable with DevOps, CI/CD, and infrastructure automation - You raise the bar without slowing the team down - Professional proficiency in English. At Vizzia, we build infrastructure that cities depend on. We're looking for engineers who take that seriously — and find it motivating. ⭐ HIRING PROCESS - Recruiter interview - Hiring Manager interview - Technical and Product interview - CTO Interview Benefits 🏡 Hybrid work 🏝 “Contrat cadre” and RTT (between 8-12 per year depending on the number of public holidays in the current year) 💻 A Mac or PC depending on your preferences 💸 BSPCE 🍜 60% coverage of meal vouchers worth €9 per worked day 🚃/🚲 Sustainable mobility allowance 🏥 Mutuelle (Alan) 💼 Offices located in central Paris (9th arrondissement) ☀️ Annual offsite with the whole team and plenty of company events