Senior Product Designer

📍 Job Overview

Job Title: Senior Product Designer

Company: Flagstone Group LTD

Location: London, England, United Kingdom

Job Type: Full-time

Category: Product Design / User Experience

Date Posted: January 15, 2026

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

Remote Status: Hybrid

🚀 Role Summary

• Lead and drive the user experience for Flagstone's core savings platform, website, and internal systems, ensuring a cohesive and intuitive user journey.

• Champion UX strategy and cultivate a culture of design excellence within a cross-functional team, fostering innovation and best practices.

• Mentor and guide junior members of the design team, contributing to their professional growth and the overall quality of design output.

• Identify and implement opportunities to drive user engagement, conversion rates, self-service capabilities, and task efficiency through strategic design solutions.

📝 Enhancement Note: The role of Senior Product Designer at Flagstone Group LTD is positioned as a hybrid role, requiring at least one day per week in their London office. This suggests a need for strong collaboration and in-person mentorship, while also offering flexibility. The emphasis on "driving conversion, self-serve and task efficiency" indicates a strong focus on business outcomes and user-centric problem-solving within a fintech environment.

📈 Primary Responsibilities

• Oversee and execute the end-to-end user experience design for Flagstone's digital products, including web applications, mobile interfaces, and internal tools, from concept to implementation.

• Develop and evolve the company's design system, ensuring consistency, scalability, and adherence to established design standards across all product touchpoints.

• Conduct user research and usability testing in collaboration with dedicated researchers and data analysts to gather insights, validate design hypotheses, and identify areas for iteration.

• Create detailed wireframes, interactive prototypes, and high-fidelity UI designs using Figma and other relevant design tools to effectively communicate design concepts and user flows.

• Analyze existing user journeys ("as is") to identify pain points and opportunities for improvement, and envision and design future state user journeys that enhance user satisfaction and achieve business objectives.

• Collaborate closely with Product Managers and Engineering teams to ensure a deep understanding of project requirements, technical constraints, and to facilitate the smooth delivery of UIs that meet specification.

• Partner with content specialists to influence and drive best-practice copy that aligns with user needs and brand messaging, ensuring a holistic user experience.

• Proactively identify opportunities for innovation within the product offering and user interface, aiming to enhance user engagement and drive key performance indicators.

📝 Enhancement Note: The responsibilities highlight a blend of strategic UX leadership and hands-on design execution. The Senior Product Designer is expected to not only create user interfaces but also to understand and influence user journeys, contribute to business goals like conversion and efficiency, and mentor junior designers. This implies a need for strong analytical skills alongside creative design capabilities.

🎓 Skills & Qualifications

Education: While specific degree requirements are not listed, a Bachelor's degree in Design, Human-Computer Interaction, Computer Science, or a related field is typically expected for senior roles, or equivalent practical experience.

Experience:

• 5-10 years of progressive experience in Product Design, UX Design, or a similar role, with a proven track record of designing complex workflows and user interfaces for web and mobile applications.

• Demonstrated experience in developing and maintaining design systems, with a strong preference for hands-on experience with Figma.

• Experience working within cross-functional teams, including Product Management, Engineering, User Research, and Data Analysis.

Required Skills:

• Expert proficiency in wireframing, prototyping, and UI design using industry-standard tools, with a strong emphasis on Figma.

• Deep understanding of user-centered design principles, user experience strategy, and design thinking methodologies.

• Proven ability to analyze user needs and translate them into intuitive and effective design solutions that drive key business metrics.

• Strong communication, influencing, and stakeholder management skills, with the ability to articulate design rationale clearly to both technical and non-technical audiences.

• Experience in evolving and maintaining design systems, ensuring consistency and scalability across product portfolios.

Preferred Skills:

• Experience in the FinTech or financial services industry, understanding the unique challenges and opportunities within this sector.

• Familiarity with data analysis tools and methodologies to inform design decisions and measure impact.

• Experience in mentoring or leading junior design team members.

• Understanding of front-end development principles (HTML, CSS, JavaScript) to facilitate better collaboration with engineering teams.

📝 Enhancement Note: The "5-10 years" experience level suggests a need for candidates who can operate independently, mentor others, and contribute to strategic UX decisions, not just execute tasks. The emphasis on Figma, design systems, and collaboration with product managers and engineers points towards a highly integrated design process within the product development lifecycle.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A comprehensive portfolio showcasing a minimum of 3-5 distinct projects that demonstrate your expertise in end-to-end product design, from initial concept and user research to final UI implementation and iteration.

• Each project should clearly articulate the problem statement, your role and contributions, the design process followed, key challenges faced, and the measurable impact of your design solutions (e.g., increased conversion, improved task completion, enhanced user satisfaction).

• Demonstrate your experience with complex workflows and UIs, providing examples of how you've simplified intricate user journeys.

Process Documentation:

• Clearly outline the user research methodologies employed in your projects, such as user interviews, surveys, usability testing, and heuristic evaluations, and how the findings informed your design decisions.

• Provide detailed examples of your wireframing, prototyping, and UI design process, explaining the rationale behind your design choices and the evolution of your designs through iterative feedback loops.

• Detail your experience in collaborating with cross-functional teams, specifically highlighting how you worked with product managers, engineers, and data analysts to ensure successful product delivery and alignment with business goals.

• Include examples of how you have driven innovation and identified opportunities to improve conversion rates, self-serve capabilities, or task efficiency through your design work.

📝 Enhancement Note: For a Senior Product Designer role, the portfolio is paramount. It needs to go beyond just showcasing visual design. Candidates must demonstrate strategic thinking, problem-solving skills, a deep understanding of user-centered design processes, and the ability to articulate the business impact of their work. The emphasis on complex workflows and design systems is critical.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for Senior Product Designers in London with 5-10 years of experience, the estimated salary range is £65,000 - £90,000 per annum. This estimate accounts for the competitive FinTech market, the seniority of the role, and the cost of living in London.

Benefits:

• Hybrid Working: A flexible arrangement allowing employees to work from the London office at least one day per week, fostering team collaboration and culture.

• Competitive Bonus Scheme: A performance-based bonus designed to reward high achievement and contribution.

• Flexible Benefits Budget: A dedicated budget to fund personalized benefits, catering to individual needs such as health screenings, coaching, or other personal development areas.

• Salary Sacrifice Options: Opportunity to make tax-efficient savings on various lifestyle expenses, including electric cars, nursery fees, and home/tech goods.

• "Around the World" Scheme: A unique benefit allowing employees to work remotely from anywhere for up to three months.

• Mental Wellbeing Support: Access to therapy and mental health sessions through Spill.

• Learning and Development: An annual personal development budget of £1,000 to support professional growth and skill enhancement.

• Private Health Care: Comprehensive coverage through AXA, including potential for reduced gym memberships and disregarded medical history.

• Medical Cash Plan: Assistance with the costs of dental and optical expenses.

• Life Insurance and Income Protection: Financial security with coverage up to four times annual salary.

• Matched Pension Contributions: Company contributions matched up to 5% of employee pension contributions.

• Generous Holiday Allowance: 25 days of annual leave, plus bank holidays, well-being days, and volunteering days.

• Enhanced Parental Leave: Increased pay and support for maternity, paternity, and adoption leave.

Working Hours: The standard working hours are approximately 40 hours per week, with a hybrid model allowing for flexibility in location for a portion of the week.

📝 Enhancement Note: The provided benefits are extensive and reflect a modern, employee-centric approach, particularly within the tech and FinTech sectors. The "Around the World" scheme and the flexible benefits budget are notable differentiators. The salary estimate is based on typical London market rates for this level of seniority and specialization.

🎯 Team & Company Context

🏢 Company Culture

Industry: FinTech / Financial Technology, specifically focusing on online savings platforms. Flagstone operates within a dynamic and rapidly evolving sector, characterized by innovation, a strong emphasis on security, and a drive towards digital transformation in financial services.

Company Size: Flagstone Group LTD is a growing company, likely falling into the small to medium-sized business (SMB) category or approaching mid-market size. This size often implies a culture that balances structured processes with the agility and collaborative spirit of a smaller organization, offering opportunities for significant individual impact.

Founded: While the founding date is not provided, Flagstone's description suggests a company that has moved beyond its initial startup phase and is now focused on scaling and profitability, while retaining a strong emphasis on its unique culture.

Team Structure:

• The design team is part of a cross-functional product development unit, working closely with Product Managers, Engineers, User Researchers, and Data Analysts.

• As a Senior Product Designer, you will report into a Design Lead or Head of Product/Design, and will be responsible for mentoring junior designers within the team.

Methodology:

• Data-Driven Design: Decisions are informed by user research, usability testing, and data analysis to ensure designs are user-centric and effective.

• Agile Development: Projects likely follow an agile methodology, involving iterative development cycles, continuous feedback, and close collaboration between design and engineering.

• Design System-Centric: A strong reliance on and contribution to a robust design system to ensure consistency, efficiency, and scalability across all digital products.

Company Website: flagstoneim.com

📝 Enhancement Note: Flagstone positions itself as a company that values its culture as a competitive advantage, emphasizing kindness, respect, and growth. The FinTech industry context suggests a need for meticulous design, strong attention to detail, and an understanding of regulatory and security considerations.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a Senior Product Designer, indicating a mid-to-late career stage. It requires a blend of advanced design skills, strategic thinking, and leadership capabilities. The expectation is for the individual to not only execute design but also to influence product direction, mentor others, and contribute to the overall design strategy and culture.

Reporting Structure: The Senior Product Designer will likely report to a Design Manager, Head of Design, or Head of Product. They will also work closely with Product Managers and Engineering Leads on a day-to-day basis. There is a clear expectation of mentoring junior designers, suggesting a potential for future team leadership responsibilities.

Operations Impact: The Senior Product Designer has a direct impact on Flagstone's core business objectives:

• Conversion: Designing intuitive user flows and compelling interfaces that encourage new users to sign up and deposit funds.

• Self-Serve: Creating efficient and easy-to-use features that allow users to manage their accounts and savings independently, reducing support load.

• Task Efficiency: Optimizing internal and external platform workflows to ensure users can complete their desired actions quickly and with minimal friction.

• Brand Perception: Shaping the user experience to reflect Flagstone's values of trustworthiness, innovation, and customer-centricity.

Growth Opportunities:

• Leadership Development: Potential to grow into a Design Lead or Managerial role, overseeing a team of designers and shaping the design vision for specific product areas.

• Strategic Influence: Opportunity to take on greater responsibility in UX strategy, product roadmap input, and defining the future of Flagstone's user experience.

• Specialization: Deepen expertise in specific areas such as FinTech UX, design systems, or user research methodologies.

• Cross-Functional Mobility: Potential to move into Product Management roles or other strategic positions within the company, leveraging a strong understanding of user needs and product development.

📝 Enhancement Note: The "Senior" title implies a pathway for growth beyond individual contribution. Candidates should look for opportunities to demonstrate leadership potential, strategic thinking, and impact on key business metrics. The FinTech context also offers unique challenges and learning opportunities.

🌐 Work Environment

Office Type: Flagstone offers a hybrid working model, with a designated London office serving as a collaborative hub. This implies an office environment designed to facilitate teamwork, brainstorming sessions, and in-person interactions, likely featuring open-plan spaces, meeting rooms, and potentially dedicated areas for design collaboration.

Office Location(s): The primary office location is London, United Kingdom. Specific details about the office address and amenities would typically be provided during the interview process. The hybrid model requires employees to be within commuting distance to London for at least one day a week.

Workspace Context:

• Collaborative Environment: The expectation of at least one day a week in the office highlights a culture that values face-to-face interaction, team synergy, and spontaneous knowledge sharing among designers, product managers, and engineers.

• Tooling & Technology: Access to industry-standard design tools like Figma, prototyping software, and potentially collaboration platforms (e.g., Slack, Jira, Confluence) is expected to support efficient workflow and communication.

• Cross-Functional Interaction: The workspace is designed to encourage regular interaction with other departments, fostering a holistic understanding of the business and product development lifecycle.

Work Schedule: While standard hours are around 40 per week, the hybrid arrangement and the "Around the World" scheme suggest a degree of flexibility. However, core working hours and team collaboration days will likely be established to ensure effective team function and project momentum.

📝 Enhancement Note: The hybrid model is a key feature of the work environment. Candidates should consider how they best thrive in such a setup – balancing focused work at home with collaborative time in the office. The specific benefits like the "Around the World" scheme suggest a company that embraces flexible working arrangements beyond just hybrid.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with a recruiter or hiring manager to assess overall fit, experience, and alignment with company culture.

• Portfolio Review & Design Challenge: A more in-depth discussion where you'll present your portfolio, discuss specific projects, and likely be given a design challenge or case study to work through. This assesses your design process, problem-solving skills, and ability to articulate your rationale.

• Cross-Functional Interviews: Interviews with Product Managers, Engineers, and potentially other designers or stakeholders to evaluate collaboration skills, technical understanding, and cultural fit.

• Final Interview: A meeting with senior leadership (e.g., Head of Design, Head of Product) to discuss strategic vision, leadership potential, and final alignment.

Portfolio Review Tips:

• Tell a Story: For each project, clearly articulate the problem, your approach, your specific contributions, the challenges, and the outcomes. Focus on the "why" behind your design decisions.

• Quantify Impact: Whenever possible, use data and metrics to demonstrate the success of your designs (e.g., increase in conversion rates, reduction in support tickets, improved task completion time).

• Show Your Process: Include wireframes, user flows, prototypes, and iterations to illustrate your design thinking and problem-solving methodology.

• Highlight Collaboration: Demonstrate how you worked with cross-functional teams, incorporating feedback and aligning with business and technical requirements.

• Tailor to the Role: Emphasize projects that showcase experience with complex workflows, design systems, and ideally, FinTech or similar regulated industries.

Challenge Preparation:

• Understand the Brief: Carefully read and understand the design challenge. Ask clarifying questions if needed.

• Define Scope: Clearly define the problem you are solving and the scope of your solution.

• Think Aloud: If it's a live exercise, articulate your thought process, assumptions, and decisions as you work.

• Focus on Process: Even if you don't complete a fully polished design, demonstrate a sound design process and strategic thinking.

• Consider Edge Cases: Think about potential user scenarios, technical constraints, and how your design might scale.

📝 Enhancement Note: The interview process is likely rigorous, with a strong emphasis on evaluating both design craft and strategic thinking. The portfolio review is a critical gate, so candidates should prepare to discuss their work in depth and demonstrate tangible impact.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: The core tool for wireframing, prototyping, UI design, and collaboration. Proficiency is essential.

• Prototyping Tools: While Figma has robust prototyping capabilities, familiarity with other tools like InVision or Adobe XD may be beneficial.

• Design System Management: Experience with tools or methodologies for managing and scaling design systems.

Analytics & Reporting:

• Data Analysis Tools: Familiarity with tools such as Google Analytics, Amplitude, Mixpanel, or similar platforms to understand user behavior and measure design impact.

• Data Visualization: Ability to interpret data visualization dashboards and reports to extract actionable insights.

CRM & Automation:

• While not directly a design tool, an understanding of how designs integrate with CRM systems (e.g., Salesforce) and automation workflows can be advantageous for designing seamless user experiences.

📝 Enhancement Note: Figma is explicitly mentioned and is a non-negotiable skill. The emphasis on analytics suggests that designers are expected to be data-informed, using metrics to validate their work and drive improvements.

👥 Team Culture & Values

Operations Values:

• User-Centricity: A deep commitment to understanding and advocating for the user's needs and experience in all design decisions.

• Collaboration: A belief in the power of cross-functional teamwork, open communication, and shared ownership of product success.

• Kindness & Respect: Fostering an inclusive and supportive environment where diverse perspectives are valued and individuals are treated with dignity.

• Growth & Development: Encouraging continuous learning, skill enhancement, and personal professional development for all team members.

• Innovation: A drive to explore new ideas, challenge the status quo, and find creative solutions to complex problems.

Collaboration Style:

• Integrated Teams: Design is not siloed but works as an integral part of cross-functional product teams, participating in all stages of the product lifecycle.

• Open Feedback: A culture that encourages constructive feedback, both giving and receiving, to continuously improve designs and processes.

• Knowledge Sharing: Active participation in design critiques, team meetings, and potentially internal workshops to share learnings and best practices.

📝 Enhancement Note: Flagstone explicitly highlights its culture of "kindness, respect, and growth." Candidates should be prepared to demonstrate how they embody these values in their work and interactions. The emphasis on collaboration within cross-functional teams is also a key cultural aspect.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing User Needs with Business Goals: Effectively translating user desires and business objectives into cohesive and impactful design solutions within the FinTech space.

• Evolving Design System: Continuously maintaining and expanding the design system to support new features and evolving product requirements while ensuring adoption and consistency.

• Mentoring Junior Designers: Successfully guiding and developing the skills of junior team members while managing personal design responsibilities.

• Adapting to Critique: Remaining open and receptive to feedback on design work, iterating effectively while maintaining design integrity.

Learning & Development Opportunities:

• Advanced Design Techniques: Opportunities to explore and implement cutting-edge design methodologies, tools, and principles.

• FinTech Industry Expertise: Deepen understanding of the financial services landscape, regulatory requirements, and user behaviors specific to this sector.

• Leadership Skills: Develop mentorship and leadership capabilities through guiding junior designers and contributing to strategic design initiatives.

• Cross-Functional Exposure: Gain broader insights into product management, engineering, and business strategy through close collaboration.

📝 Enhancement Note: The challenges presented are typical for a senior role in a growing FinTech company. Framing these challenges as opportunities for growth and skill development will be key for candidates.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex workflow you designed. What were the challenges, and how did you simplify it for the user?" (Focus on process, problem-solving, and user-centricity).

• "How do you approach creating or evolving a design system? What are the key considerations for ensuring its adoption and scalability?" (Highlight your understanding of design systems, consistency, and collaboration).

• "Tell me about a time you received critical feedback on your design work. How did you handle it, and what was the outcome?" (Demonstrate adaptability, resilience, and a commitment to improvement).

Company & Culture Questions:

• "What interests you about Flagstone and our mission to reinvent the savings market?" (Research Flagstone's products, values, and recent news).

• "How do you see your role contributing to our culture of kindness, respect, and growth?" (Connect your personal values and working style to Flagstone's stated culture).

Portfolio Presentation Strategy:

• Structure: Begin with an overview of your career and design philosophy, then dive into 2-3 key projects.

• Project Deep Dive: For each project, clearly state the objective, your role, the problem, your process (research, ideation, design, testing), key decisions, challenges, and the measurable impact.

• Visuals: Use high-quality visuals, including wireframes, prototypes, user flows, and final UIs. Explain your design choices verbally.

• Q&A Readiness: Be prepared for in-depth questions about your decisions, your collaboration process, and how you handle trade-offs.

• Showcase Figma & Design Systems: Explicitly mention and demonstrate your proficiency with Figma and your experience with design systems.

📝 Enhancement Note: Preparation should focus on demonstrating not only design skill but also strategic thinking, leadership potential, and cultural fit. Candidates should be ready to articulate the "why" behind their design choices and quantify their impact.

📌 Application Steps

To apply for this Senior Product Designer position:

• Submit your application through the provided link on Greenhouse.

• Portfolio Preparation: Curate your portfolio to highlight 2-3 of your most impactful projects that best showcase your experience with complex workflows, design systems, and driving measurable business outcomes. Ensure each project clearly outlines the problem, your role, process, and results.

• Resume Optimization: Tailor your resume to emphasize keywords from the job description, such as "User Experience," "Design Systems," "Figma," "Wireframing," "Prototyping," "UI Design," "Usability Testing," "Mentoring," and "Collaboration." Quantify achievements wherever possible.

• Interview Practice: Prepare to articulate your design process, decision-making rationale, and leadership approach. Practice presenting your portfolio and be ready to discuss your experience with FinTech or similar complex digital products.

• Company Research: Thoroughly research Flagstone Group LTD, its products, mission, and stated company culture. Understand their position in the FinTech market and identify how your skills and values align with their objectives.

⚠️ 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.

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