Senior Data Scientist

Viber
London
Description

Rakuten Viber is one of the most popular and downloaded apps in the world. Working with us provides a unique opportunity to influence hundreds of millions of our users and to be part of the journey that makes us a super-app. Our mission is to make people's lives easier by enabling meaningful connections, from precious moments with family and friends, through managing business relationships to pursuing their passions.

Connecting people across the world is a complex problem with many machine-learning applications. The purpose of this role is to implement mathematical models and algorithms to solve complex business problems in recommendations and classification. Successful outcomes will significantly impact our hundreds of millions of daily active users around the globe.

As a Senior Data Scientist, you will work in a highly collaborative environment with extensive amounts of data to research and develop deep learning models in the domains of dating, moderation and content segmentation and apply them to tasks such as recommendation systems and analytics at a high scale.

Responsibilities

  • Work with management and partner teams to design and implement solutions in recommender systems for given objectives.
  • Lead technical efforts to improve the performance of deep learning models and propose initiatives to impact company goals directly.
  • Autonomously find solutions to complex problems in social network recommendations and understand the data generation process and challenges with the data.
  • Analyze and leverage the extensive data received from our application to enhance model performance and accuracy.
Requirements

  • Master's degree in Statistics, Mathematics or Computer Science.
  • Minimum of 4 years of experience in designing, developing and deploying production-level deep learning recommendation models with a proven business impact.
  • Fluency in Python, Pandas/Dask, SQL, PyTorch or Tensorflow. Ability to write readable and maintainable code.
  • Strong communication and storytelling skills with both technical and non-technical audiences. Ability to present complex technical subjects to non-technical stakeholders.
  • Ability to read AI research publications and implement the algorithms & architectures from scratch.
Advantages

  • Advanced knowledge in generative models: Auto-encoding, adversarial models, compression.
  • Worked on deep learning graph model solutions with 10's of TB of data.
  • Publication in peer-reviewed conferences or journals on reinforcement learning, deep learning, and machine learning.
  • Strong passion for machine learning and investing independent time towards learning, researching, and experimenting with new innovations in the field.
  • Experience working with technologies like SageMaker, Athena/Trino, Spark, Milvus, and OpenSearch.
Posted 2025-10-15

Recommended Jobs

Operations Manager - United Kingdom (London)

Accommodations Plus International
London

Summary: The Operations Center team provides 24-hour coordination and execution of client crew accommodation requests.  In coordination with other departments, the Operations Manager ensures that …

View Details
Posted 2025-09-12

Assistant Food and Beverage Services Manager - DoubleTree by Hilton Tower of London

Hilton
London

Assistant Food and Beverage Services Manager - DoubleTree by Hilton Tower of London WELCOME TO A WORLD OF OPPORTUNITIES AT THE UK's #1 GREAT PLACE TO WORK 2025, AS VOTED BY OUR TEAM MEMBERS!- No tw…

View Details
Posted 2025-10-15

Live-out Nanny

Exclusive Household Staff
Knightsbridge, Greater London

A young family living in Knightsbridge are seeking a live-out Italian or Spanish speaking Nanny for their 22 month old daughter, and after their Maternity Nurse departs in February 2023, to take over …

View Details
Posted 2025-09-10

M&E Project Manager

OHUK
Wandsworth, Greater London

M&E Project Manager required on a high end residential project . OHUK are seeking an experienced MEP Project Manager to oversee the full lifecycle of a luxury residential project in the Wandswor…

View Details
Posted 2025-09-10

Graduate FX Analyst

Central London

Our client is a foreign exchange specialist based in London and founded in 2011. They are one of the fastest-growing companies in the financial services sector. They provide services for companies …

View Details
Posted 2025-10-12

Software Developer

Aspen Technology, Inc.
City of London, Greater London

The driving force behind our success has always been the people of AspenTech. What drives us, is our aspiration, our desire and ambition to keep pushing the envelope, overcoming any hurdle, challengi…

View Details
Posted 2025-10-11

Client Advisor

Gucci
London

Gucci seeks an Arabic-speaking Client Advisor in London, responsible for delivering exceptional client experiences and achieving sales targets. The role involves utilizing cross-selling techniques, de…

View Details
Posted 2025-09-21

Property Compliance & Building Safety/Risk Manager

West London

Role Title: Property Compliance and Building Safety/Risk Manager Location: West London (Hybrid – on-site and remote working) Rate: £500 per day (umbrella) Contract: 3–6 months, with potential t…

View Details
Posted 2025-09-19

VIP Event & Travel Designer

Platinum Travel Recruitment Ltd
London

We are collaborating with a forward thinking and dynamic travel company that offers experiences across luxury travel, VIP events, and hospitality who are now seeking an experienced  VIP Luxury Travel…

View Details
Posted 2025-10-15

SEN Teaching Assistant

Riley Personnel
Richmond upon Thames, Greater London

Location: Richmond Upon Thames, London Pay: £90 - £110 per day (dependent on experience) Start Date: ASAP Contract: Long-term, with potential to become permanent We are working with a number of outst…

View Details
Posted 2025-09-10