Rakuten Viber

Analyst

• Identify opportunities for improvement through data analysis aligned with company strategy and revenue KPIs.
• Partner cross-functionally to translate data findings into actionable business and marketing decisions.
• Design, run, and analyse A/B tests to evaluate sales strategies and revenue monetization.
• Build, automate, and maintain dashboards and reports to track sales insights, business behaviour, and key trends.
• Communicate findings clearly to stakeholders, influencing both tactical and strategic decisions.
• Leverage AI and automation tools to accelerate analytical workflows and uncover deeper insights.

Revenue Analyst

Product Manager

• Drive the strategy, roadmap, and execution of Viber’s platforms across mobile and desktop clients, in close collaboration with the R&D team.
• Partner with Engineering, Analytics, Business leadership, to define and deliver a product vision that balances user needs, business growth, and technical opportunities.
• Own the measurement and improvement of technical performance and usability across platforms.
• Scale usage, retention, user satisfaction, and monetization through scaling experiences across platforms.
• Define, monitor, and analyze Key Performance Indicators (KPIs) and Service Level Objectives (SLOs) for your products.
• Use this data to make difficult trade-off decisions, measure success, and drive continuous improvement.

Product Manager – Platform

Data Scientist

• Develop classical machine learning and deep learning models that will impact company goals directly.
• Work with partner teams to design and implement solutions in recommender systems, classification and prediction for given objectives.
• Find solutions to complex problems in social network recommendations, understand the data generation process and the challenges involved with working with big data.
• Analyze and leverage the extensive data received from our application to enhance model performance and accuracy.

Backend Engineer

• Design and develop robust client-server communication systems using C++
• Build and maintain VoIP server infrastructure components
• Optimize performance for real-time communication applications
• Collaborate with cross-functional teams to deliver reliable communication solutions
• Debug and troubleshoot complex networking and communication issues
• Participate in code reviews and maintain high code quality standards.

Senior C++ Developer

• Be a subject matter expert in the world of business messaging
• Drive Viber Business Messaging vision by understanding the competitive landscape including WhatsApp, Apple Messages for Business, RCS RBM, and SMS in order to position Viber as a leader in key markets.
• Define and execute a multi-quarter roadmap aligned to growth, reliability, and monetization OKRs for Business Messages together with the Product Lead.
• Work with external CPaaS/aggregators and enterprise companies on integrations, co-launches, and enablement.
• Partner with Sales, Support, and Customer Success to scale adoption.
• Oversee the entire lifecycle of the product, from ideation and concept development to launch and ongoing optimization.
• Conduct market and user research to identify trends and opportunities from partners and businesses using Business Messages.
• Gather and analyze feedback and requests from partners and businesses, to better inform product decisions and our long-term roadmap.
• Set and monitor key performance indicators (KPIs) related to business message solutions within Viber to assess product performance to inform and improve the product.

Product Manager – Business Messaging

Engineering Manager

• Work with high-performing engineers to deliver scalable, high-quality products.
• Stay hands-on with backend development - developing, mentoring, reviewing, and guiding engineers through complex Java-based systems.
• Drive execution of strategic product goals in partnership with Product, Business, and Senior Management.
• Architect and evolve our infrastructure for performance, reliability, and scale.
• Foster excellence - hire, coach, and grow world-class engineering talent.
• Champion innovation, exploring new technologies (including AI-assisted development) to increase productivity and quality.
• Measure and optimize system performance, scalability, and developer velocity.

• Own the end-to-end strategy, roadmap, and execution of Viber Dating.
• Define and deliver a product vision that balances user needs, business growth, and market differentiation
• Quickly identify opportunities and consistently focus the team in the most impactful direction
• Lead, mentor, and grow a team of high-performing product managers
• Drive usage, retention, and user satisfaction through data-driven experimentation and innovation
• Collaborate with Design, Engineering, Marketing, and Analytics to ship impactful features at speed
• Represent Viber Dating at the leadership level, influencing company-wide priorities and product direction

Director of Product – Dating

• Develop classical and deep learning models that directly impact company goals.
• Find solutions to complex problems in social network infrastructure, understanding data generation processes and big data challenges.
• Analyze and leverage extensive application data to enhance model performance and accuracy.
• Work with partner teams to design and implement classification and prediction solutions for given objectives, presenting them clearly.

Data Scientist – Infrastructure

DevOps Engineer

• Keep our production environments up and running
• Lead the implementation of DevOps engineering practices in the organization in collaboration with the Development and Architecture teams
• Design, create and improve infrastructure deployment and management using IaC
• Build and maintain tooling in various technologies
• Improve availability, scalability, observability, and cost-efficiency of our current and future products
• Support 24/7 on-call rotation

Human Resources

• Work closely with leaders in all levels to design and implement HR strategies that align with business objectives and drive organizational success.
• Serve as a trusted advisor to managers offering expert guidance, coaching, and support.
• Partner with managers to strengthen their leadership skills, support team development, and provide practical advice on day-to-day management challenges.
• Manage employee-related matters throughout the entire employee journey, from onboarding to offboarding.
• Serve as the primary point of contact for all employee-related matters, providing guidance and support as needed.
• Lead initiatives that foster employee engagement and wellbeing.
• Plan and execute creative programs such as onboarding experiences, team-building events, celebrations, and volunteer activities that reflect Viber’s values and culture.
• Build strong relationships across all levels of the organization, working closely with internal HR teams and cross-functional partners. Collaborate with teams such as Talent Acquisition, Finance, Office Manager and People Analytics, as well as global HRBPs, to deliver impactful people initiatives.

HR Business Partner

Project Manager

• Own end-to-end delivery of complex, cross-team, multi-disciplinary projects.
• Create and manage quarterly plans, including timelines, milestones, and deadlines.
• Ensure consistency and excellence in Agile execution across multiple teams.
• Drive continuous improvement of Scrum Master capabilities through coaching, feedback, and training.
• Manage crisis, identify and resolve major blockers & external dependencies.
• Collaborate closely with product managers, developers, QA engineers, and other stakeholders to deliver high-quality solutions.