Senior Product Designer

📍 Job Overview

Job Title: Senior Product Designer

Company: Fyxer

Location: London, England, United Kingdom

Job Type: FULL_TIME

Category: Product Design / UX/UI

Date Posted: 2026-05-14

Experience Level: 5-10 years

Remote Status: Hybrid

🚀 Role Summary

• Lead the design vision for an AI-powered productivity platform, focusing on human behavior and user motivation.

• Design complex, intuitive interfaces for AI-driven features such as live transcription and personalized draft generation.

• Collaborate closely with early-stage Product Managers and Engineers to define and build seamless cross-surface workflows.

• Drive the adoption of AI-native workflows and component systems that integrate seamlessly with engineering processes.

• Conduct independent user research to inform design decisions and ensure product-market fit.

📝 Enhancement Note: This role is positioned as the senior design voice within a fast-growing, early-stage company. The emphasis is on a proactive, hands-on approach to design leadership, with significant influence over product strategy and company-wide design thinking. The "AI-Native Workflows" aspect suggests a need for designers comfortable with the nuances of designing for AI-generated content and experiences.

📈 Primary Responsibilities

• Spearhead the design strategy by applying a deep understanding of human behavior, motivation, and friction to all product decisions.

• Design and prototype user interfaces and interaction models for complex AI-driven features, ensuring a calm, intuitive, and coherent user experience.

• Conduct comprehensive user research, including interviews, session recordings, and data analysis (leveraging PostHog), to validate design hypotheses and iterate on product solutions.

• Work in close partnership with Product Management and Engineering teams to translate user needs and business objectives into tangible design outcomes.

• Champion and evolve the company's design system, ensuring component alignment (e.g., ShadCN, Tailwind CSS) and seamless integration into engineering workflows.

• Contribute to the development of custom internal tooling to empower engineers with design-aligned components and efficient workflows.

• Proactively identify opportunities to enhance user experience through AI, considering the unique UX challenges and opportunities presented by AI-generated outputs.

• Maintain high standards of craft and execution, moving quickly without compromising the premium feel and quality of the product.

📝 Enhancement Note: The responsibilities highlight a blend of strategic design leadership and hands-on execution. The expectation to "run your own user research" and "understand technical constraints well enough to have a real conversation with an engineer" points to a senior individual contributor role with significant autonomy and cross-functional engagement, typical of early-stage companies.

🎓 Skills & Qualifications

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

Experience:

• 5+ years of product design experience, with a significant portion in high-growth, early-stage startup environments.

Required Skills:

• Human Behavior First: Demonstrated ability to think in terms of motivation, habit, and friction, and to translate these insights into impactful product decisions.

• Craft and Execution: High proficiency in end-to-end product design, from concept to high-fidelity execution, with a strong portfolio showcasing shipped products.

• Technical Fluency: Deep understanding of modern engineering practices, comfortable discussing technical constraints and collaborating closely with engineers.

• AI-Native Workflows: Experience designing for or around AI-generated outputs, with a thoughtful approach to the UX implications.

• User Research: Proven ability to conduct independent user research, analyze findings, and advocate for user needs.

• Design Tools: Expert proficiency in Figma for UI design and prototyping, and Miro for collaboration and ideation.

• Component Systems: Familiarity with component libraries and utility-first CSS frameworks like ShadCN and Tailwind CSS.

Preferred Skills:

• Experience with V0 for AI-powered UI generation.

• Familiarity with analytics and session recording tools like PostHog.

• Experience designing cross-surface workflows (web, mobile web).

• Understanding of visual identity principles and branding.

• Experience with AI transcription and personalized content generation interfaces.

📝 Enhancement Note: The emphasis on "building structure" and "defining foundational relationships" suggests a need for a candidate who is not only skilled but also a proactive culture builder and process architect within the design function. The explicit mention of Figma, ShadCN, and Tailwind CSS indicates a need for practical, implementation-focused design skills.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase a minimum of 3-5 distinct product design projects that demonstrate a strong understanding of human behavior and its application to user experience.

• Include case studies that detail your process, from initial problem definition and user research through to final execution and iteration.

• Highlight projects where you significantly influenced product strategy or built design processes in an early-stage environment.

• Demonstrate experience designing for complex workflows and AI-generated outputs.

Process Documentation:

• For each project, clearly articulate the problem statement, your role, the methodologies used (e.g., user research, ideation, prototyping, testing), and the outcomes achieved.

• Emphasize how user insights and behavioral understanding drove key design decisions.

• Detail your approach to evolving component systems and ensuring design consistency across platforms.

• Include examples of how you worked with engineers to implement designs effectively, potentially mentioning tools like ShadCN or Tailwind CSS in practice.

📝 Enhancement Note: The portfolio requirements are geared towards demonstrating strategic thinking, process ownership, and practical execution in a startup context. The emphasis on "building structure" and "influencing product strategy" means candidates should highlight projects where they had significant impact beyond just UI design.

💵 Compensation & Benefits

Salary Range: £100,000 - £130,000 per annum.

Benefits:

• Equity: Opportunity to own a stake in a high-growth, early-stage company.

• Autonomy & Ownership: Significant freedom and responsibility to shape product direction and design processes.

• Velocity & Impact: Fast-tracked opportunities for senior responsibilities and direct impact on a rapidly scaling product.

• Health & Wellness: Comprehensive benefits package (details to be confirmed, but typically includes health, dental, and vision insurance).

• Professional Development: Support for continuous learning and skill advancement.

• Remote Work Flexibility: Ability to work remotely within the United Kingdom, offering a hybrid environment.

Working Hours: Full-time, with an estimated 40 hours per week. The hybrid model allows for flexibility in balancing remote and in-office work, accommodating deep work sessions and collaborative team interactions.

📝 Enhancement Note: The salary range provided is competitive for a Senior Product Designer in London with the specified experience level, especially for a high-growth startup. The benefits emphasize ownership, autonomy, and the unique growth trajectory of an early-stage company.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology / Software / AI / Productivity Platform. Fyxer operates in the rapidly evolving AI and productivity software market, aiming to leverage AI to streamline complex user workflows.

Company Size: Early-stage, with a focus on building a small, exceptional team. The company is on track to hit $100M in revenue by the end of 2026, indicating significant growth and ambition.

Founded: The founding date is not explicitly stated, but the company's rapid growth trajectory suggests it is a relatively young, dynamic organization.

Team Structure:

• Reports to the Chief Product and Growth Officer, indicating a direct line to executive leadership.

• Works closely with an existing Product Designer, an early Product Manager hire, and direct engineers.

• The Senior Product Designer will be the most senior design hire, establishing a foundational design voice and potentially building out the team in the future.

Methodology:

• Human Behavior First: Design decisions are rooted in understanding user psychology and behavior, not just functional requirements.

• AI-Native Workflows: Designing with an awareness of how AI tools are used by engineers and how AI-generated outputs impact UX.

• Agile & Iterative: Moving fast, shipping frequently, and iterating based on user feedback and data.

• Collaborative Implementation: Close partnership between design, product, and engineering to ensure seamless execution.

Company Website: https://www.fyxer.com

📝 Enhancement Note: The company culture is defined by a commitment to hiring exceptional talent, fostering autonomy, and achieving rapid growth. The "small, exceptional team" philosophy is a key differentiator, suggesting a high-performance environment where individual contributions are highly valued and directly impactful.

📈 Career & Growth Analysis

Operations Career Level: Senior Individual Contributor (IC) with significant leadership influence. This role is not just about executing designs but about shaping the design philosophy, strategy, and potentially the future of the design team. It's a "senior design voice" role, implying a strategic and foundational impact.

Reporting Structure: Direct reporting to the Chief Product and Growth Officer. This provides high visibility and direct access to executive decision-making, enabling swift alignment and impact.

Operations Impact: The Senior Product Designer will have a direct and profound impact on Fyxer's product development, user experience, and overall growth trajectory. By ensuring products are designed around human behavior and are intuitive to use, the role directly contributes to user adoption, retention, and ultimately, revenue growth, especially given the company's ambitious revenue targets.

Growth Opportunities:

• Design Leadership: Opportunity to become the de facto design leader, setting standards, mentoring other designers, and potentially building a design team.

• Strategic Influence: Direct input into product strategy and roadmap decisions, shaping the future of an AI-powered productivity platform.

• Skill Specialization: Deepen expertise in AI-driven UX, human behavior analysis, and building component systems in a fast-paced environment.

• Career Acceleration: Rapid progression and exposure to high-level business challenges due to the company's high-growth stage and lean team structure.

• Equity Growth: Potential for significant financial upside through equity in a company aiming for substantial revenue milestones.

📝 Enhancement Note: The growth trajectory for this role is exceptional, offering a blend of leadership, strategic impact, and accelerated career development, characteristic of joining a successful early-stage tech company.

🌐 Work Environment

Office Type: Fyxer operates a hybrid work model. While not fully remote, it offers significant flexibility, allowing employees to work from home within the United Kingdom. This suggests a modern approach to work, balancing in-office collaboration with remote autonomy.

Office Location(s): Based in London, England, United Kingdom. While specific office details aren't provided, a London location implies access to a vibrant tech ecosystem and potential for in-person team meetups or dedicated office space for collaborative days.

Workspace Context:

• Collaborative Environment: Encourages close collaboration with Product Managers and Engineers, fostering a team-centric approach to problem-solving.

• Tooling & Technology: Access to modern design and collaboration tools such as Figma, Miro, and PostHog, enabling efficient workflows and data-driven decisions.

• AI Integration: Design work will be closely integrated with AI technologies, providing exposure to cutting-edge product development practices.

• High-Focus Culture: The emphasis on a "small, exceptional team" suggests an environment conducive to deep work and focused problem-solving.

Work Schedule: Full-time (approx. 40 hours/week) with a hybrid arrangement. This allows for flexibility in structuring the workday to accommodate deep design thinking, user research, and collaborative sessions, while respecting the need for work-life balance.

📝 Enhancement Note: The hybrid model is designed to offer the best of both worlds: the flexibility and focus of remote work, combined with the collaborative benefits of in-person interaction, typical for innovative tech companies in major hubs like London.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Review of application and portfolio to assess alignment with role requirements and company values.

• Portfolio Presentation & Design Challenge: Candidates will likely present their portfolio, focusing on case studies that demonstrate their approach to human behavior, AI design, and collaboration. A practical design challenge, potentially involving AI-generated outputs or complex workflow design, may be administered.

• Cross-Functional Interviews: Conversations with Product Management and Engineering leads to assess technical understanding, collaboration style, and ability to work within an AI-native workflow.

• Executive Interview: Meeting with the Chief Product and Growth Officer to discuss strategic vision, leadership potential, and cultural fit.

Portfolio Review Tips:

• Human Behavior Focus: Clearly articulate how your understanding of user psychology and motivation drove your design decisions in each case study.

• AI Design Nuances: Showcase projects where you've thoughtfully addressed the unique challenges and opportunities of designing for AI-generated content or workflows.

• Process & Collaboration: Detail your end-to-end design process, emphasizing how you collaborated with engineers and product managers, especially in an early-stage or high-growth environment.

• Impact & Outcomes: Quantify the impact of your designs wherever possible, using metrics related to user engagement, efficiency, or business goals.

• Technical Alignment: Demonstrate familiarity with tools and technologies relevant to the stack (Figma, ShadCN, Tailwind CSS) and your ability to work closely with engineers.

Challenge Preparation:

• AI UX Scenarios: Prepare for challenges that might involve designing an interface for an AI assistant, optimizing an AI-generated output, or creating a workflow that integrates AI seamlessly.

• Workflow Design: Practice designing complex, multi-step user journeys that require careful consideration of friction points and user motivation.

• Technical Communication: Be ready to discuss technical constraints and trade-offs with engineers, demonstrating a practical understanding of implementation.

• Figma & Prototyping: Ensure you can quickly and effectively prototype solutions in Figma to illustrate your ideas.

📝 Enhancement Note: The interview process is designed to rigorously evaluate a candidate's strategic thinking, practical design skills, and cultural fit within Fyxer's high-performance, AI-focused environment. The portfolio is central to demonstrating these capabilities.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: The core tool for UI design, prototyping, and component system development. Proficiency is essential for creating high-fidelity mockups and interactive prototypes.

• Miro: Used for collaborative ideation, user journey mapping, wireframing, and workshop facilitation, supporting the "human behavior first" approach.

• Lucide: Likely used for icon design or as part of a component library.

Analytics & Reporting:

• PostHog: A comprehensive product analytics platform used for user research, including surveys, session recording, and general analytics. Essential for understanding user behavior and informing design decisions.

CRM & Automation:

• ShadCN UI: A popular, re-usable component library built with Tailwind CSS, designed for accessibility and customization. Critical for ensuring design consistency and efficient implementation.

• Tailwind CSS: A utility-first CSS framework used for rapidly building custom designs. Demonstrates a close alignment with modern front-end development practices.

• V0: An AI-powered tool for generating UI code from prompts, suggesting an interest in leveraging AI for design and development efficiency.

📝 Enhancement Note: The technology stack reflects a modern, AI-forward approach to product development, emphasizing efficiency, collaboration, and close integration between design and engineering. Proficiency in these tools is paramount.

👥 Team Culture & Values

Operations Values:

• Human Behavior First: This is the foundational principle, driving all design and product decisions. It emphasizes empathy and a deep understanding of user motivations.

• Craft and Execution: A commitment to high-quality, polished product experiences that feel premium and are delivered efficiently.

• AI-Native Workflows: Embracing and integrating AI into design and development processes, viewing it as a tool for enhancement and efficiency.

• Autonomy & Ownership: Expectation that team members take initiative, own their work, and drive outcomes with minimal oversight.

• Velocity & Scale: A focus on rapid progress and contributing to ambitious growth targets, while maintaining quality.

Collaboration Style:

• Cross-Functional Integration: Close working relationships with Product Managers and Engineers are essential, fostering a shared understanding of goals and challenges.

• Direct Communication: Emphasis on clear, concise communication to ensure alignment and quick decision-making in a fast-paced environment.

• Process Building: A culture of creating and refining processes, as opposed to inheriting them, suggesting a proactive and iterative approach to teamwork.

• Data-Informed Decisions: Leveraging tools like PostHog to ground discussions and decisions in user insights and performance data.

📝 Enhancement Note: The culture values proactive, skilled individuals who can thrive in an autonomous, fast-paced environment and contribute to building both the product and the company's operational framework.

⚡ Challenges & Growth Opportunities

Challenges:

• Establishing Design Authority: As the most senior design hire, you'll need to establish and evangelize the "human behavior first" design philosophy across the company.

• Designing for AI Complexity: Creating intuitive and coherent user experiences for AI-powered features that are inherently complex requires careful consideration of UX patterns and potential pitfalls.

• Building Processes from Scratch: In an early-stage company, you'll be responsible for defining design processes, systems, and potentially team structures, which can be demanding.

• Balancing Speed and Quality: The need to move fast and scale quickly while maintaining a premium user experience requires strong prioritization and execution skills.

• Integrating AI Workflows: Effectively integrating AI tools into design and engineering workflows, ensuring consistency and leveraging their full potential.

Learning & Development Opportunities:

• Strategic Design Leadership: Gain experience in shaping product strategy and influencing executive decisions at a rapidly growing startup.

• AI UX Specialization: Become an expert in designing for AI-driven products, a highly in-demand skill set.

• System Design & Architecture: Contribute to the development and evolution of a robust design system and component library.

• High-Growth Environment Acumen: Develop skills in navigating rapid scaling, building processes, and working within a lean, high-performance team.

• Mentorship: Opportunity to mentor junior designers (if the team expands) and learn from executive leadership.

📝 Enhancement Note: The challenges are significant but directly correlate with the substantial growth and impact opportunities available. This role is ideal for someone who thrives on building and shaping rather than maintaining.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you used a deep understanding of human behavior to solve a complex product problem. What was your process, and what was the outcome?" (Focus on your "Human Behavior First" approach and ability to translate insights into actionable design).

• "How would you approach designing an AI-powered feature, like live transcription or personalized drafting, to feel intuitive and valuable to users?" (Prepare to discuss AI UX considerations, user control, and managing expectations).

Company & Culture Questions:

• "What makes you excited about Fyxer's mission and our focus on AI-powered productivity?" (Show genuine interest and alignment with the company's vision).

• "How do you approach collaboration with Product Managers and Engineers, especially when there are differing opinions?" (Emphasize your communication skills, empathy, and data-driven approach to resolving conflict).

Portfolio Presentation Strategy:

• Storytelling: Frame each case study as a narrative with a clear problem, your role, your process, your decisions (backed by research/behavioral insights), and the quantifiable results.

• Focus on Impact: Highlight instances where your design decisions directly led to improved user engagement, efficiency, or business metrics.

• Technical Integration: Be prepared to discuss how your designs were implemented and how you worked with engineers, perhaps showing how ShadCN or Tailwind CSS was utilized.

• AI Design Examples: If you have them, showcase projects that specifically address AI-generated outputs or AI-driven workflows.

• Conciseness: Keep your presentation focused and within the allotted time, emphasizing the most impactful aspects of your work.

📝 Enhancement Note: Preparation should focus on demonstrating not just design skill, but strategic thinking, a deep understanding of user behavior, and the ability to thrive in a fast-paced, AI-centric startup environment.

📌 Application Steps

To apply for this Senior Product Designer position:

• Submit your application through the provided link on Ashby.

• Portfolio Customization: Tailor your portfolio to highlight projects demonstrating your expertise in human behavior analysis, AI-native workflows, and experience in early-stage/high-growth environments. Focus on case studies that showcase your process and impact.

• Resume Optimization: Ensure your resume clearly articulates your 5+ years of experience, specifically mentioning your work in high-growth settings and your proficiency with key tools like Figma, ShadCN, and Tailwind CSS. Quantify achievements where possible.

• Interview Preparation: Practice articulating your design philosophy, especially the "human behavior first" approach, and prepare to discuss your experience with AI UX, user research, and cross-functional collaboration. Rehearse your portfolio walkthrough.

• Company Research: Thoroughly research Fyxer, its product, its mission, and its stated values. Understand their ambitious growth targets and how design plays a critical role in achieving them.

⚠️ 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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