Senior Fullstack Software Engineer
💡 Mission
At Vizzia, we are building a platform capable of deploying and operating multiple independent SaaS environments at scale.
Your mission is to design and deliver a scalable multi-SaaS cloud architecture and media infrastructure that allows Vizzia to deploy, operate, and scale independent SaaS platforms reliably and efficiently.
You will work at the core of our platform: multi-tenant architecture, deployment infrastructure, identity management, and media processing systems.
Beyond development, you will play a key role in raising the engineering bar of the team, shaping architectural decisions, and helping build a platform that can support Vizzia’s rapid growth.
🛠️ Responsabilités
Design and maintain a scalable multi-SaaS architecture enabling the deployment of isolated SaaS environments.
Build infrastructure that allows teams to automatically deploy new environments (Dev, Staging, Production, Demo).
Develop and maintain backend services in TypeScript / Node.js.
Design and operate scalable cloud infrastructure on AWS with strong reliability and security standards.
Build and improve CI/CD pipelines, infrastructure automation, and monitoring systems.
Implement a centralized identity and access management layer (SSO) across SaaS platforms.
Design and maintain cross-platform role and permission management systems.
Contribute to distributed systems capable of handling high workloads, including media pipelines and encoding jobs.
Maintain high engineering standards through strong testing practices, documentation, and technical debt reduction.
Contribute to the architecture of modular and configurable platform components supporting country-specific configurations.
Provide technical leadership within the engineering team, guiding architecture decisions and mentoring engineers.
Use AI-assisted development tools (such as Claude Code or Cursor) to improve development velocity and engineering workflows.
✅ Your Profile
Strong experience in backend engineering (TypeScript / Node.js) and building reliable services.
Proven experience designing cloud architectures on AWS.
Experience building or operating multi-tenant / multi-SaaS platforms.
Solid understanding of distributed systems and scalability challenges.
Comfortable working with DevOps practices, CI/CD pipelines, and infrastructure automation.
Experience with test-driven approaches (TDD / BDD) and functional testing frameworks such as Cucumber.
Comfortable contributing to multi-language environments (TypeScript, Rust, Go, C or similar).
Ability to provide technical leadership, mentor engineers, and guide architectural decisions.
Strong engineering discipline with attention to code quality, testing, and maintainability.
Interest in AI-assisted development ecosystems and modern engineering workflows.
English professional proficiency
⭐ 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