Senior Android Performance Engineer

Yubo is hiring!

About

📱 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.

Job Description

Who we are 

📱 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, Jacksonville), 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. 

Challenges:

Within the Performance team and in close collaboration with the Yubo mobile and live team you will be in charge of improving the overall performance of the application (instant app startup, APK size reduction, memory footprint reduction, CPU and GPU usage reduction, bandwidth reduction), evangelizing on code and architecture best practices.

Technical & Mindest Prerequisites

  • Professional background:
  • > 5 years
  • Specific knowledge:
  • Kotlin 
  • Have worked in a team
  • Have worked on an application with:
  • a lot of dependencies
  • a lot of codes
  • in a multithreaded environment
  • Nice to have:
  • audio or video background
  • work on embedded devices
  • work on high performance application
  • network knowledge
  • Soft skills:
  • Pedagogue
  • Great communication
  • Ability to gather teams around a subject
  • Curiosity / Autonomy
  • Technologies we use

  • iOS architecture: 100% Swift, Clean Architecture (mainly VIPER, work in progress), Dependency manager (CocoaPods (Texture, IGListKit, Realm, ...), Live technology: WebRTC (C++/Objective-C)
  • Android app: 100 % Kotlin 
  • Server-side: NodeJS, Express
  • Client-side: React, Redux
  • Databases: Elastic Search, MongoDB, BigTable, BigQuery, Redis
  • Infrastructure: Docker containers orchestrated with Kubernetes on Google Cloud.
  • Live Techno: WebRTC (C++)
  • The recruitment Process

  • Interview with TAM
  • Interview with Lead Performance
  • Android Tech test
  • Fit Interview with CTO & Lead dev
  • Fit Interview with CEO & Head of People
  • 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 🍾

    Additional Information

    • Contract Type: Full-Time
    • Location: Paris, France (75008)
    • Experience: > 5 years