Senior Back-end Engineer Node.Js - Wizz
Wizz (Wizz App, originally developed by Voodoo) · Posted Apr 29, 2026
- Paris, Île-de-France, France
- Hybrid
- Full-time · Senior
- 5+ years
Seeking a Senior Backend Engineer to join Wizz, a flirting and dating app for Gen Z. The role involves shaping architecture, scalability, and long-term strategy while collaborating with product engineering teams.
Compensation
Competitive salary upon experience
Responsibilities
- Own the backend architecture, ensuring scalability, performance, and reliability for millions of users
- Collaborate closely with product teams to shape and influence product decisions with a strong technical perspective
- Design, implement, deploy, and maintain highly scalable and available backend systems, including features that enhance user safety and content moderation
- Integrate and manage third-party services (e.g., analytics, moderation, cloud tools) to ensure a secure and seamless user experience
- Define and promote best practices in reliability, observability, and infrastructure management
Requirements
- Nice to have: Fastify
- Nice to have: Socket.io
- Nice to have: Go
- Nice to have: Firebase
- Nice to have: MongoDB