Product Designer (Mobile Native Oriented)

📍 Job Overview

Job Title: Product Designer (Mobile Native Oriented)

Company: Rakuten Viber

Location: London, England, United Kingdom

Job Type: Full-Time

Category: Product Design / UX/UI Design (with a strong focus on Fintech Operations)

Date Posted: September 29, 2026

Experience Level: Mid-Senior Level (5-10 years)

Remote Status: On-site

🚀 Role Summary

• Lead end-to-end product design for critical financial flows within a global super-app, ensuring clarity, trust, and user-centricity.

• Actively leverage and integrate Artificial Intelligence (AI) tools across the design lifecycle, from research synthesis to workflow automation.

• Drive the design of user experiences for financial services, including payments, money movement, and identity verification, within an established B2C mobile application.

• Collaborate closely with cross-functional teams in product management, engineering, and leadership to align design decisions with product KPIs and business outcomes.

• Contribute to the evolution of a shared design system, maintaining consistency and quality across multiple Viber products.

📝 Enhancement Note: This role is positioned within Product Design but has significant operational implications due to its focus on financial services (Viber Pay). The emphasis on AI integration and data-driven decision-making aligns it closely with modern Revenue Operations and GTM strategies that leverage technology for efficiency and user acquisition/retention. The description implies a need for designers who understand the operational nuances of financial products and can translate complex requirements into intuitive user experiences.

📈 Primary Responsibilities

• Spearhead the entire design process, encompassing user discovery, in-depth research, iterative prototyping, rigorous usability testing, and final design delivery for mobile-native financial features.

• Take complete ownership of the design for core financial transactions, including sending/receiving money, wallet onboarding, transaction history management, and identity verification flows, prioritizing trust and ease of use.

• Proactively utilize AI tools to enhance design operations, including synthesizing research findings, generating ideation concepts, automating repetitive tasks, and improving overall workflow efficiency.

• Play a key role in shaping AI-driven product features, contributing to Viber's strategic integration of AI into its super-app user experience.

• Conduct hands-on user research, including user interviews, usability testing sessions, and detailed analysis of product data and user analytics to inform design decisions.

• Actively contribute to and help refine the design system utilized across all Viber products, ensuring design consistency, scalability, and adherence to brand guidelines.

• Maintain a holistic understanding of product strategy, ensuring that all design decisions are strategically aligned with key performance indicators (KPIs) and overarching business objectives.

📝 Enhancement Note: The responsibilities clearly indicate an end-to-end product design ownership model, common in fast-paced tech environments. The explicit mention of AI tools suggests a forward-thinking approach to design operations, where efficiency and innovation are paramount. The focus on financial flows implies a need for meticulous attention to detail and an understanding of regulatory and trust-building elements, which are critical operational considerations in fintech.

🎓 Skills & Qualifications

Education: Bachelor's degree in Design, Human-Computer Interaction, Computer Science, or a related field, or equivalent practical experience.

Experience: 5+ years of dedicated product design experience with a proven track record in B2C mobile applications, ideally within the fintech, payments, or digital wallet sectors.

Required Skills:

• Demonstrated ability to take full ownership of design projects, from problem definition through to successful product launch, with minimal supervision.

• Proficient in data-driven design methodologies, with a strong ability to independently analyze data and metrics to inform design solutions and feature development.

• Solid foundation in User Experience (UX) design principles, with exceptional attention to detail regarding microcopy, edge cases, error states, and micro-interactions.

• Experience designing complex, regulated, or compliance-adjacent user flows, such as identity verification, onboarding processes, and transaction limit management, while ensuring a human-centric experience.

• Competency in conducting independent user research, including user interviews and usability testing, and providing constructive feedback within design critiques.

• Excellent written and verbal communication skills, with the ability to effectively collaborate and present to product managers, engineers, and leadership across different geographic locations.

• Experience working within a design system and contributing to its ongoing development and maintenance. Preferred Skills:

• Direct experience with AI-powered design tools and methodologies for research synthesis, ideation, and workflow automation.

• Familiarity with the operational aspects of financial services and regulatory compliance in a B2C context.

• Experience working in agile development environments with short feedback loops.

• Ability to contribute to and advocate for user-centric design principles within a product-led organization.

📝 Enhancement Note: The emphasis on "taking full ownership" and being "data-driven" points towards a need for self-motivated operations-minded designers. The "5+ years" combined with the complexity of fintech and AI integration suggests a role that requires strategic thinking and the ability to mentor junior designers, even if not explicitly stated as a management role. The preference for fintech/payments experience is crucial for understanding the operational intricacies of Viber Pay.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase end-to-end product design case studies that demonstrate a clear understanding of problem framing, user research methodologies, iterative design processes, and data-informed decision-making.

• Highlight specific examples of designing complex B2C mobile flows, with a strong preference for fintech, payments, or digital wallet experiences.

• Include case studies demonstrating the application of AI tools in the design process, focusing on efficiency gains, enhanced insights, or novel feature development.

• Present detailed examples of how you have contributed to or leveraged design systems to ensure consistency and scalability across mobile applications.

• For each case study, clearly articulate the business objectives, user needs, design challenges, your specific contributions, the solutions implemented, and the quantifiable impact (e.g., improved conversion rates, reduced error rates, increased user satisfaction). Process Documentation:

• Demonstrate experience in documenting design processes, including user research findings, design rationale, and testing results.

• Illustrate ability to create clear and concise design specifications for engineering teams, ensuring accurate implementation of UI/UX elements and interactions.

• Showcase how you have contributed to or utilized design system documentation to guide product development and maintain design integrity.

📝 Enhancement Note: For a role involving financial products and AI, a portfolio that highlights process rigor, data utilization, and measurable outcomes is essential. Candidates should be prepared to discuss how their design decisions directly impacted operational efficiency or user trust within financial contexts. The integration of AI tools should be a prominent theme in their presented work.

💵 Compensation & Benefits

Salary Range: £65,000 - £90,000 per annum (estimated based on London location, 5-10 years of experience in a specialized design role within a global tech company, and the fintech/AI focus).

Benefits:

• Competitive salary and potential for performance-based bonuses.

• Comprehensive health insurance, including medical, dental, and vision coverage.

• Generous paid time off (PTO), including vacation days, sick leave, and public holidays.

• Pension scheme with company contributions.

• Opportunities for professional development, including training, conferences, and access to learning resources.

• Relocation assistance may be available for candidates moving to London.

• Access to state-of-the-art design tools and technologies, including advanced AI platforms.

• Employee assistance program for mental health and well-being support.

• Potential for stock options or equity in the broader Rakuten ecosystem.

Working Hours: 40 hours per week, typically Monday to Friday. While the role is on-site, there may be flexibility for occasional remote work or adjusted hours depending on team needs and project demands, subject to management approval.

📝 Enhancement Note: The salary estimate is based on industry benchmarks for experienced Product Designers in London, with an uplift for the specialized fintech and AI skill set, as well as the B2C super-app context. Benefits are standard for a large international tech organization like Rakuten Viber. The mention of "manager who runs 1:1s focused on your growth and expects you to drive it yourself" suggests a culture that values proactive career management, which is a key aspect of operational efficiency for individual employees.

🎯 Team & Company Context

🏢 Company Culture

Industry: Telecommunications, Social Media, Fintech, Messaging Services. Rakuten Viber operates within a highly competitive and rapidly evolving digital communication and financial services landscape, requiring continuous innovation and adaptation to market trends and user demands.

Company Size: Large Enterprise (Rakuten is a global conglomerate with tens of thousands of employees; Viber itself is a significant part of this, with hundreds or thousands of employees across various functions and locations). This scale offers stability, extensive resources, and opportunities for broad impact, but may also present more formalized processes.

Founded: Viber was founded in 2010 and acquired by Rakuten in 2014. This history indicates a mature product with established user bases, now undergoing significant expansion into new areas like fintech, driven by strategic investment and integration within the Rakuten ecosystem.

Team Structure:

• The design team is distributed, with a core group based in Israel and this role in London. This implies a need for strong remote collaboration skills and comfort with asynchronous communication.

• The London-based product and engineering teams will be key day-to-day collaborators.

• The reporting structure for this role is likely within the Product Design function, reporting to a Design Lead or Manager who is focused on individual growth and development.

• Cross-functional collaboration will be essential, working closely with Product Managers, Engineers, Researchers, and potentially Marketing and Legal/Compliance teams, especially given the fintech focus. Methodology:

• Data Analysis and Insights: A strong emphasis on using data and analytics to inform design decisions, understand user behavior, and measure the impact of design changes. This is critical for optimizing financial flows and user engagement.

• Workflow Planning and Optimization: The role requires optimizing complex user journeys, particularly for financial transactions, which involves meticulous planning, process mapping, and iterative refinement.

• Automation and Efficiency Practices: The explicit mention of AI tools points to a culture that values automation to drive efficiency in design processes, research synthesis, and potentially in product features themselves.

Company Website: www.viber.com

📝 Enhancement Note: Understanding Viber's position as a "super-app" and its integration into the Rakuten ecosystem is crucial. The fintech aspect (Viber Pay) signifies a strategic pivot that requires designers to understand not just user experience but also operational constraints, trust, and regulatory considerations. The distributed nature of the design team highlights the importance of clear communication and process.

📈 Career & Growth Analysis

Operations Career Level: This role represents a Mid-Senior to Senior level Product Designer position. It requires not just execution skills but also the ability to lead design initiatives, influence product strategy, and operate with a high degree of autonomy. The focus on financial products and AI integration suggests a demanding role that fosters deep expertise in a specialized area of product design.

Reporting Structure: The designer will report to a Design Manager or Lead, likely within the global design organization. They will work closely with Product Managers and Engineering Leads in the London office, fostering a collaborative, cross-functional environment. The emphasis on self-driven growth implies a manager who acts as a coach rather than a directive supervisor.

Operations Impact: The impact of this role is significant and direct. Design decisions will influence:

• User Adoption and Retention: For Viber Pay and its associated financial services.

• Trust and Security: Critical for any financial product, directly impacting user confidence and willingness to transact.

• Operational Efficiency: Through well-designed onboarding and transaction flows that minimize support costs and reduce user errors.

• Revenue Generation: By driving engagement with Viber's financial services.

• Brand Perception: Positioning Viber as a reliable and innovative super-app.

Growth Opportunities:

• Specialization in Fintech and AI Design: Deepen expertise in designing for regulated industries and leveraging cutting-edge AI technologies within product development.

• Leadership and Mentorship: Potential to mentor junior designers, lead design initiatives within specific product areas, and contribute to design strategy.

• Cross-functional Influence: Develop strong relationships and influence across product, engineering, and business teams, gaining broader product management understanding.

• Career Progression: Advancement to Senior Product Designer, Lead Product Designer, or specialized roles within UX Research, Design Systems, or Product Strategy. Opportunities may also exist within the broader Rakuten organization.

📝 Enhancement Note: The description of the manager and the expectation for self-driven growth are key indicators of the career trajectory. This role is not just about executing tasks but about actively shaping one's career path within a supportive yet demanding environment. The operational impact is directly tied to revenue and user trust, making it a high-visibility role.

🌐 Work Environment

Office Type: The role is based in a physical office in London, indicating a preference for in-person collaboration, team cohesion, and a structured work environment. This is common for roles involving sensitive data or complex, real-time collaboration.

Office Location(s): London, England, United Kingdom. Specifics about the office amenities, accessibility, and team layout would need to be confirmed directly, but generally, large tech companies in London offer modern, collaborative workspaces.

Workspace Context:

• Collaborative Environment: The London office will likely foster a collaborative atmosphere with opportunities for spontaneous discussions and brainstorming sessions with local product and engineering teams.

• Operations Tools and Technology: Access to a robust technology stack, including advanced design software, prototyping tools, collaboration platforms, and crucially, AI tools for design and research.

• Team Interaction: Regular interactions with designers in Israel, product managers, and engineers in London will be a core part of the daily routine, requiring strong communication and team-building skills.

Work Schedule: The standard 40-hour work week is typical. The "on-site" requirement suggests a structured schedule, but within that, there's likely an expectation of flexibility to meet project deadlines and accommodate cross-time zone collaboration with the Israel-based team. The emphasis on "short loops between design, product, and leadership" suggests a dynamic and responsive work pace.

📝 Enhancement Note: The on-site requirement in London is a key differentiator. While many tech roles are remote, this indicates a company preference for in-person synergy, particularly for a product as critical as Viber Pay. The workspace context should emphasize how this physical presence facilitates collaboration and integration with the broader product development lifecycle.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with a recruiter to assess basic qualifications, experience alignment, and salary expectations.

• Portfolio Presentation & Design Challenge (Round 1): A session where candidates present 1-2 case studies from their portfolio, focusing on their process, decision-making, and impact. This may be followed by a small, focused design exercise or problem-solving prompt related to fintech or AI design.

• Hiring Manager Interview (Round 2): Deeper dive into experience, leadership potential, problem-solving skills, and cultural fit. Discussion around past projects and how they align with Viber's mission and the specific role.

• Team Interviews (Round 3): Meetings with potential peers (other designers, product managers, engineers) to assess collaboration style, technical acumen, and team dynamics. This round often includes a more in-depth discussion on design system contributions or AI integration strategies.

• Final Interview: Potentially with a senior leader or executive to discuss strategic alignment and long-term vision.

Portfolio Review Tips:

• Focus on Process & Rationale: Clearly articulate why you made certain design decisions, supported by research, data, and user insights. For fintech, emphasize how you ensured trust and clarity.

• Highlight AI Integration: Showcase specific instances where AI tools were used to enhance your design process or contribute to product features. Detail the tools and the outcomes.

• Quantify Impact: Whenever possible, provide metrics that demonstrate the success of your designs (e.g., conversion rate improvements, reduction in error rates, user satisfaction scores).

• Showcase Fintech Acumen: If you have fintech experience, detail your understanding of compliance, security, and the unique user needs in this domain.

• Tailor to the Role: Emphasize projects that align with mobile-native design, B2C products, and ideally, financial services or complex user flows.

Challenge Preparation:

• Understand Viber's Ecosystem: Research Viber, Rakuten, and Viber Pay's current offerings, target audience, and competitive landscape.

• Familiarize Yourself with AI Design Tools: Be ready to discuss your experience with AI tools relevant to design (e.g., for research synthesis, content generation, workflow automation).

• Practice Fintech Scenarios: Prepare for hypothetical design challenges related to onboarding, secure transactions, or managing financial data within a mobile app.

• Articulate Your Design Philosophy: Be ready to discuss your approach to user-centered design, data-driven decision-making, and collaboration.

📝 Enhancement Note: The interview process is structured to assess not only design craft but also strategic thinking, operational understanding of fintech, and adaptability to AI. The portfolio is the central piece, so candidates must curate it to directly address the requirements of this specific role.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma (primary), Sketch, Adobe Creative Suite (Illustrator, Photoshop), InVision, Principle, ProtoPie.

• AI Design & Research Tools: Tools for AI-powered research synthesis (e.g., Dovetail with AI features), AI-assisted ideation platforms, AI tools for workflow automation (e.g., within Figma plugins or standalone AI assistants). Specific tools will depend on what Viber is actively adopting.

• Collaboration & Communication: Slack, Microsoft Teams, Zoom, Google Workspace.

Analytics & Reporting:

• Product Analytics: Mixpanel, Amplitude, Google Analytics, Firebase Analytics.

• Data Visualization: Tableau, Power BI, Looker (or internal dashboarding tools).

• User Feedback Platforms: SurveyMonkey, Typeform, UserTesting.com.

CRM & Automation:

• While not directly a CRM role, understanding CRM principles and how design impacts user journeys within a CRM context is beneficial.

• Project Management: Jira, Asana, Trello.

• Design System Management: Zeplin, Storybook (for component documentation).

• Integration Tools: Familiarity with how design integrates with API-driven products and backend systems is a plus.

📝 Enhancement Note: The emphasis on AI tools is paramount. Candidates should be prepared to discuss their practical experience with any AI design tools, not just theoretical knowledge. Proficiency in Figma is almost always a given for modern mobile design roles. Understanding how design data feeds into analytics platforms is crucial for demonstrating an operations mindset.

👥 Team Culture & Values

Operations Values:

• User-Centricity: Placing the user at the heart of every design decision, especially critical when dealing with sensitive financial data and transactions.

• Data-Driven Decision Making: Utilizing quantitative and qualitative data to inform design choices, validate hypotheses, and measure impact, ensuring efficient and effective product development.

• Ownership & Accountability: Taking full responsibility for design outcomes, from initial concept to post-launch analysis, and proactively driving projects forward.

• Collaboration & Communication: Fostering open, honest, and constructive communication with cross-functional teams, valuing diverse perspectives to achieve optimal solutions.

• Innovation & Adaptability: Embracing new technologies, particularly AI, and continuously seeking ways to improve processes, user experiences, and product offerings.

Collaboration Style:

• Cross-functional Integration: A highly collaborative approach, working closely with product managers to define requirements, engineers to ensure feasibility and quality implementation, and researchers to validate designs.

• Feedback Culture: A strong emphasis on giving and receiving honest, constructive feedback in design critiques and team syncs to foster continuous improvement.

• Knowledge Sharing: Encouraging the sharing of insights, best practices, and learnings across the distributed design team and with other departments to elevate the overall quality of work.

📝 Enhancement Note: The values described align with a high-performing operations and product development culture. The emphasis on data, ownership, and collaboration is key for a role that bridges design craft with business outcomes.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing Innovation with Regulation: Designing intuitive and engaging financial experiences while adhering to strict regulatory requirements and ensuring user trust.

• Integrating AI Seamlessly: Effectively incorporating AI tools and features into the user experience without creating complexity or compromising usability, and staying ahead of the curve in AI adoption.

• Cross-Time Zone Collaboration: Effectively working with teams in different geographic locations and time zones, requiring excellent asynchronous communication and coordination skills.

• Impact Measurement in Fintech: Clearly demonstrating the ROI and impact of design initiatives in a complex financial product environment, where metrics can be multifaceted.

Learning & Development Opportunities:

• Advanced Fintech Design: Gaining deep expertise in designing for payments, digital wallets, and other financial services, understanding the nuances of security, compliance, and user trust.

• AI in Design: Becoming proficient in leveraging AI tools for research synthesis, ideation, prototyping, and workflow optimization, staying at the forefront of design technology.

• Global Product Strategy: Understanding the strategic imperatives of a large, international super-app and how design contributes to its overall business goals.

• Mentorship and Leadership: Opportunities to grow into leadership roles, mentor junior designers, and influence design strategy at a broader level.

📝 Enhancement Note: The challenges presented are typical for senior roles in innovative, regulated industries. The growth opportunities highlight the potential for significant career development and specialization.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you took a complex financial flow and simplified it for a B2C mobile audience. What was your process, and what were the outcomes?" (Focus on problem framing, user research, and measurable impact.)

• "How have you used AI tools in your design process to improve efficiency or generate new insights? Provide a specific example." (Be ready to discuss tools, methodologies, and results.)

• "Walk us through your process for ensuring trust and clarity in a design for a feature involving sensitive user data, such as identity verification or financial transactions." (Emphasize attention to detail, microcopy, error states, and user education.) Company & Culture Questions:

• "What excites you about Viber's mission as a super-app, and how do you see design contributing to its growth, particularly in the fintech space?" (Showcase your understanding of Viber's strategy and market position.)

• "How would you approach collaborating with a distributed design team and local engineering teams across different time zones?" (Highlight your communication and asynchronous work skills.)

• "Describe a situation where you had to push back on a stakeholder's request based on user data or design principles. How did you handle it?" (Assess your ability to advocate for the user and use data effectively.) Portfolio Presentation Strategy:

• Structure Your Case Studies: Use a clear narrative: Problem > Research > Solution > Impact. For each step, detail your specific contribution and rationale.

• Emphasize Operational Thinking: For fintech projects, discuss how your design choices addressed operational concerns like fraud prevention, compliance, or customer support efficiency.

• Showcase AI Integration: If applicable, dedicate a section or weave into your case studies how AI tools were used and the benefits they provided.

• Be Prepared for Deep Dives: Anticipate questions about specific design decisions, trade-offs made, and how you measured success. Practice articulating your thought process clearly and concisely.

• Highlight Design System Contributions: If you've worked with or contributed to design systems, be ready to discuss how you ensured consistency and scalability.

📝 Enhancement Note: Interview preparation should focus on demonstrating a blend of creative design skills, analytical rigor, operational awareness (especially in fintech), and an understanding of how to leverage new technologies like AI.

📌 Application Steps

To apply for this Product Designer position:

• Submit your application through the provided Comeet link on Viber's careers page.

• Tailor your Resume and Cover Letter: Highlight your experience in B2C mobile design, fintech, AI tools, and user research. Quantify achievements wherever possible.

• Curate Your Portfolio: Select 1-3 strong case studies that best showcase your end-to-end design process, specifically focusing on mobile-native fintech or complex B2C flows, and ideally, your use of AI in design. Ensure it's easily navigable and clearly articulates your role and impact.

• Prepare for the Interview Process: Practice articulating your design philosophy, problem-solving approaches, and specific project experiences, particularly those related to financial products and AI integration. Be ready to present your portfolio confidently.

• Research Viber and Rakuten: Understand their products, mission, and recent developments, especially regarding Viber Pay and their AI strategy. This will help you tailor your responses and ask insightful questions.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.