Rakuten Viber

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. As a Director in Analytics, you will work in a highly collaborative environment with extensive amounts of data to research and develop deep learning models to solve real-world problems and apply them to tasks such as identifying bad actors, preventing fraud, building anomaly detection models, and analytics at a high scale. As a senior manager, you are expected to create an alignment across different divisions, focus on strategic business KPIs and lead other managers to collaborate and perform shared goals. Successful outcomes in this role will significantly impact the business. Responsibilities Lead the development and optimization of spam and fraud detection systems using machine learning and rule-based engines. Work closely with management, product, engineering, compliance, legal, and security teams to align, present, and implement end-to-end fraud solutions. Ensure adherence to KYC, AML, and other financial regulations while managing fraud risks. Leverage the extensive data received from our application to enhance model performance and accuracy. Requirements 7+ years of experience in hands-on working on spam and fraud problems at a scale of at least 1MM transactions /events per day, deployed solutions to production with a proven impact. 3+ years of experience in managing fraud prevention and risk teams at a corporation, preferably in fintech or cyber-tech companies with a proven business impact. 3+ years of experience in Python, SQL, and AWS cloud. Ability to write readable and maintainable code. Master's degree in Statistics, Finance, Data Science, or Computer Science. Advantages Background in data science or cybersecurity with a focus on spam and fraud. Proven track record of reducing fraud and spam actors at scale, with strong type-1 and type-2 error estimates. Strong understanding of hypothesis testing and RCT. Background in applied statistics. Working in high scales of >10MM transactions/day. Experience working with technologies like Athena/Trino, Spark, AML, CI/CD, and Tableau. At Rakuten Viber, we connect people-no matter who they are, or where they are from. As a communication platform that connects hundreds of millions of people around the world, we know that the way people communicate changes on an almost daily basis. That's why we dedicate ourselves to providing added value to communication - from private and group chats to audio and video calls to the ability to follow and contact brands, businesses and celebrities. Viber is an all-in-one platform for everything communications-based, and all Viber communications are protected by end-to-end encryption. Viber is part of the Rakuten Group, a world leader in e-commerce and financial services

Sales, London, UK (hybrid), June 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. As part of Viber's fast-growing Advertising team, you'll join a passionate group of ad tech and monetization experts. Reporting to the Sr. Director of Advertising Solutions, you'll play a key role in driving day-to-day ad monetization efforts and maximizing revenue opportunities across the platform. you'll be working closely with our existing Advertising Solutions team members to ensure ad tech reliability, streamline processes, and drive continuous revenue optimization. The role offers a unique opportunity to collaborate cross-functionally with internal teams and key partners, helping to shape and scale Viber's advertising business. Responsibilities Take ownership of ad revenue performance and inventory management, demonstrating strong business acumen and accountability. Build and nurture collaborative relationships with 3rd-party partners, including ad networks, mediation platforms, and demand-side partners, fostering trust and driving mutual value. Partner cross-functionally with Product Managers to launch impactful advertising features and optimizations that balance user experience with monetization goals. Work closely with Executive, Product, and Operations teams to align on revenue strategy and deliver measurable results through advanced yield and monetization initiatives. Identify and capitalize on new business opportunities through creativity, strategic insight, and a strong understanding of the digital advertising landscape. Evaluate and onboard new ad network partners, applying critical thinking and due diligence to assess revenue potential and alignment with business objectives. Champion innovation by exploring and piloting new ad formats that enhance both monetization and user experience. Manage integration and optimization roadmaps with internal stakeholders, demonstrating strong project management and communication skills. Requirements 5+ years of experience in mobile advertising or with an app developer, with a proven ability to drive monetization outcomes. Entrepreneurial mindset with the ability to thrive in a fast-paced, evolving environment and embrace new challenges with agility and resilience. Self-starter with a strong sense of ownership - able to drive initiatives and deliver results independently, while also collaborating effectively within cross-functional teams. Excellent communication, relationship-building, and project management skills, with the ability to engage and influence executive-level stakeholders. Solid understanding of advertising technologies, including SSPs, DSPs, and mediation platforms, rewarded video, and advanced ad targeting capabilities. A MS degree in business or a related field is preferred. Strong analytical and modeling skills, with a data-driven mindset; experience using BI tools to generate insights and guide decision-making is a plus. Fluent in English (written and spoken); additional language skills are a plus and will support global collaboration. At Rakuten Viber, we connect people-no matter who they are, or where they are from. As a communication platform that connects hundreds of millions of people around the world, we know that the way people communicate changes on an almost daily basis. That's why we dedicate ourselves to providing added value to communication - from private and group chats to audio and video calls to the ability to follow and contact brands, businesses and celebrities. Viber is an all-in-one platform for everything communications-based, and all Viber communications are protected by end-to-end encryption. Viber is part of the Rakuten Group, a world leader in e-commerce and financial services