Senior Back-end Engineer Node.Js - Wizz
Job Summary
Job Description
Voodoo seeks a Senior Backend Engineer to join the Wizz team, a social app for teens with 3 million monthly active users. This role involves owning the backend architecture, ensuring scalability and reliability for millions of users. Collaboration with the product team to influence product decisions is crucial. Responsibilities include designing, implementing, and maintaining highly scalable backend systems; defining and promoting best practices; contributing to backend infrastructure evolution; and improving system performance and scalability. The ideal candidate will be proactive, challenge assumptions, and collaborate effectively to create a robust and innovative platform.
Must have:
- Own backend architecture
- Ensure scalability and reliability
- Collaborate with product team
- Design, implement, and maintain systems
- Define and promote best practices
- Improve system performance
Perks:
- Best Office Space in France Award
13 skills required
Job Details
Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Mob Control and Block Jam, alongside popular apps such as BeReal and Wizz.
Team
Our consumer apps teams are at the forefront of crafting innovative and engaging apps for daily enjoyment.
Our ambition extends beyond gaming to entertain a global audience. Millions of people around the world, especially in the US, download and use the apps we create.
You'll be working on Wizz, a social app specifically designed for teens, boasting over 3 million monthly active users in the US and UK.
As a member of a high-performing team of 15, you'll collaborate to further scale and enhance Wizz, fostering a spirit of goodwill and creativity. As Wizz continues its dynamic growth and development, we are seeking an ambitious Senior Backend Engineer to join.
Role
- We are looking for :
- Your mission:
A Senior Backend Engineer who is not only technically strong but also eager to contribute to the product vision and actively participate in decision-making. You won’t just be writing code, you’ll have a key role in shaping the architecture, scalability, and long-term strategy of Wizz. Your ability to think beyond execution and take ownership will be crucial: we want someone who is proactive, challenges assumptions, and collaborates with product and engineering teams to create a robust, scalable, and innovative platform.
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.
Define and promote best practices in reliability, observability, and infrastructure management.
Contribute to backend infrastructure evolution, ensuring that it supports rapid product iterations and growth.
Improve system performance and scalability, particularly around high-traffic distributed systems.
Our stack
- Language and libraries: Node.js, Fastify, Socket.io, Go, Firebase
- Databases: MongoDB, Redis
- Infrastructure: Cloud Run, Pub/Sub, S3, CloudFront, Big Query
- Ops: Github Action, AWS CLI, gcloud CLI, Docker, microservice architecture
- iOS: XCode, GitHub, Cocoapods (public and private)
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