Senior Backend Engineers NodeJs - API


Senior Backend Engineers NodeJs - API

  • Permanent contract 
  • Paris

The company



  • Mobile Apps
  • From 50 to 250 employees

The job

Senior Backend Engineers NodeJs - API

  • Permanent contract 
  • Paris

Who are they?

📱 Yubo is a safe space for young people to socialize and make connections while streaming and chatting online through an app.

🔒 The platform boasts an innovative suite of safety tools that guarantee all its users’ security, moderation, and privacy.

Faced with a new generation of hyperconnected digital natives who are lonely and overwhelmed, Yubo helps Gen Z engage with the world and learn about themselves. Inspired by the best of offline interactions and the possibilities of digital life, Yubo’s vision is to fix online social interactions for the next generation. Unlike traditional social networks, Yubo prioritizes people over content, real-time interactions over likes, and real connections over followers.

🌍Created by three friends/engineers who are passionate about consumer apps and thanks to a team of 60 people in 3 different offices (Paris, Londres, New York), Yubo now has 50 million users across and attracts approximately 2 million new users every day.

Since its launch in 2015, the app’s users have:
✔️made more than 2 billion real connexions/friendships on the platform.
✔️ sent more than 10 billion chat messages.
✔️ streamed live almost 30 million times.

Want to know more about Yubo?Company culture, teams, technical stack, jobs... Let's go for an immersion!
Visit the profile

Job description

As a small and fast team, we can offer a fun and challenging environment where you will instantly see the value of your contribution to our community.

Today the Backend development tasks are handled by the CTO and Arnaud, the Lead Backend who are looking for someone to rely on for this part. You will be in charge of implementing the backend side of all the cool new features of the Yubo app while making sure that the codebase remains scalable. The main API is in NodeJS.

Technologies we use

  • Server-side: NodeJS v12, Express framework, SocketCluster framework, Redis-based queues
  • Infrastructure: Docker containers orchestrated with Kubernetes on Google Cloud, Elastic Search, MongoDB, BigTable, BigQuery, Monitoring with Prometheus/Grafana, Continuous delivery with Google Cloud Build, 2m+ commands per second on Redis
  • Android  architecture: Kotlin
  • iOS app: Swift
  • Client-side: React, Redux, SocketCluster
  • Live Techno: WebRTC (C++)
  • Your challenges as Senior Backend Engineer

  • Build a scalable and stable app for millions of users
  • Implement new features
  • Deal with legacy
  • Use real-time technologies such as WebRTC, WebSockets, etc.
  • Technical & Mindest Prerequisites

  • Deep knowledge in NodeJS development practices
  • Experience in deploying large-scale backend applications
  • Good Practice / Code Quality / Code Review
  • Performance-driven mindset
  • We are looking for smart, self-motivated software developers to join our team
  • Humility and team spirit will make a difference in this position.
  • You love solving issues and you are hunger to learn and grow in skill and impact.
  • Recruitment Process

  • Fit interview with the CEO (30 min)
  • Fit interview with the CTO (45 min)
  • A remote Technical test (4h) followed by a debrief with the CTO
  • Fit interview with the lead Data Engineering and the lead DevOps
  • Fit interview with the lead Backend and the Safety Engineering Developer
  • Fit interview with the CPO
  • What we can offer you 

    Our culture :  

    ✨Yubo is a tribe of diverse backgrounds and expertise (tech, marketing & communication, safety, support functions...) that share common values like a results-based culture, total transparency, a strong team spirit, the drive to continue learning, and courage to face challenges head-on. 

    Our policy about diversity & inclusion :

    🏳️‍🌈 We’re serious about diversity and inclusion at Yubo. People of color, gay, lesbian, transgender, non-binary people, parents, and people with disabilities are all welcome on our team. We hold regular workshops to foster a culture of empathy and compassion for minority issues. We are proud that diversity and inclusion are crucial assets to our team.

    Working at Yubo means : 

    🗽Flexibility and autonomy: the chance to work remotely when you want and where you want and with the material and tools of your choice

    🔥 Trust and empowerment: We’ve only just begun this adventure, and there are plenty of projects to work on. So it’s up to you to shape your role according to your skills and career path with the support of your manager. 

    🥰 Care and well-being: We care a lot about our people with a lot of benefits such as... Health insurance 100% reimbursed, lunch vouchers 60% reimbursed,  sick leave 100% covered, parental leave for both parents, brand new offices in the Paris, London, and Jacksonville, Pass Navigo (metro/bus) 100% covered, transport cost reimbursement for people who bike to work, and a kitchen stocked with free snacks and drinks.

    🥳 Togetherness and fun: 1 monthly team-building to celebrate, 1 incredible trip per year to relax and disconnect, quarterly team-buildings per team to rediscover each other and reconnect, Switch games after lunch, and, of course, kind and friendly teammates

    🎉We are certified HappyIndex® / AtWork StartUp 2021, Tech AtWork® 2021, and Hybrid Worplace® 2021 🍾



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