Full-Stack Product Designer — Growth + Core Product (backed by Y Combinator, $5M+ ARR, $23M+ raised)

📍 Job Overview

Job Title: Full-Stack Product Designer — Growth + Core Product

Company: Legion Health

Location: San Francisco, California, United States

Job Type: Full-Time

Category: Product Design / UX & UI / Brand / Growth Creative

Date Posted: September 23, 2026

Experience Level: 5+ years or equivalent evidence of exceptional shipped work

Remote Status: On-site

🚀 Role Summary

• This role is a critical blend of core product design and growth-focused creative, requiring end-to-end ownership from initial patient acquisition touchpoints to ongoing care experiences.

• A strong emphasis is placed on AI-native design methodologies, utilizing tools like v0, Claude Design, Figma AI, and Cursor for rapid iteration and implementation.

• The position demands a unique combination of deep product design expertise, strong visual and brand craft, and the ability to contribute directly to codebase implementation through production PRs.

• This is a hands-on individual contributor role focused on driving tangible improvements in user experience, onboarding conversion, and overall product adoption within a fast-paced, AI-driven healthcare startup.

📝 Enhancement Note: This role is highly specialized, requiring not only traditional product design skills but also a strong aptitude for front-end implementation and a proactive approach to leveraging AI tools. The "Full-Stack" aspect here specifically refers to the breadth of design surfaces (product and growth) and the hands-on coding contribution, rather than a purely engineering skillset.

📈 Primary Responsibilities

• Translate complex user needs and healthcare workflows into intuitive journeys, robust information architecture, and engaging interaction flows.

• Design and iterate on patient onboarding, ongoing care experiences, and clinician/operator tools, prioritizing clarity, trust, accessibility, and mobile usability.

• Develop a practical and scalable design system with reusable components and patterns to ensure consistent and rapid team output.

• Regularly ship well-scoped production PRs for UI improvements, internal tools, workflow logic, and prototypes, collaborating closely with the engineering team.

• Define and design for all interaction states, including loading, empty, error, and recovery scenarios, ensuring clear and concise interface copy.

• Bring Legion Health's brand identity to life across the website, landing pages, marketing communications, and acquisition creative assets.

• Conceptualize and develop paid creative concepts, collaborating with the Growth team to design and execute A/B experiments.

• Utilize user research, usability testing, product analytics, and experiment results to identify friction points and drive data-informed design decisions.

• Ensure a cohesive user journey by aligning acquisition promises with the actual product experience, from first impression to sustained engagement.

• Actively integrate AI-native design workflows using tools like v0, Claude Design, Figma AI, and Cursor to accelerate exploration, prototyping, and implementation.

📝 Enhancement Note: The responsibility of shipping production PRs is a significant differentiator for this role, indicating a need for a designer who is comfortable with code and can contribute directly to the product's implementation. This requires a strong understanding of Git and a collaborative approach to code reviews and safe rollouts.

🎓 Skills & Qualifications

Education: While no specific degree is mandated, a strong portfolio demonstrating equivalent knowledge and practical application of design principles is essential.

Experience: A minimum of 5 years of professional experience in product design, UX/UI, or a related field, with a proven track record of shipping exceptional work.

Required Skills:

• A comprehensive portfolio showcasing shipped product work, including problem framing, personal contribution, explored alternatives, documented tradeoffs, interaction details, and measurable outcomes.

• Demonstrated depth in product design principles coupled with strong visual craft across typography, layout, branding, and web design.

• Proven experience in taking ambiguous problems from discovery through polished UI and production collaboration with engineers.

• Comfort working directly within a codebase, utilizing Git and pull requests for well-scoped changes, and participating in code reviews for safe rollouts.

• Mandatory fluency with AI-native design and prototyping workflows, with the ability to showcase how tools like v0, Claude Design, Figma AI, Cursor, or comparable platforms have materially improved the speed, breadth, fidelity, or quality of shipped work.

• Experience designing for websites, landing pages, and developing effective acquisition creative, with a curiosity for performance marketing.

• Ability to leverage qualitative feedback and quantitative evidence to inform design decisions without over-reliance on single conversion metrics.

• Excellent written communication, a low-ego approach, high ownership, and the capacity to balance speed with quality in an early-stage environment. Preferred Skills:

• Experience within the healthcare industry or another trust-sensitive consumer product sector.

• Familiarity with building and maintaining design systems.

• Experience conducting and synthesizing user research and usability testing.

• Understanding of product analytics tools for performance measurement.

📝 Enhancement Note: The explicit requirement for AI-native design fluency is a critical filter. Candidates must be prepared to demonstrate their practical application of these tools and their impact on the design and development process, not just theoretical knowledge.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase at least one substantive product case study detailing the problem, your specific role and contribution, alternative solutions explored, key tradeoffs made, intricate interaction details, and quantifiable post-launch outcomes.

• Include work demonstrating your brand, website, or growth creative craft, clearly articulating your ownership and the impact of your contributions post-launch.

• Crucially, include at least one example of moving from problem framing to prototype or shipped experience specifically leveraging AI tools. This should detail which tools were used, what aspects of the process they accelerated, what elements were modified or rejected based on AI output, and how your judgment enhanced the final result.

• Demonstrate a clear understanding of user-centered design principles and how they were applied to solve user problems. Process Documentation:

• Highlight your process for translating ambiguous problems into actionable design requirements and user flows.

• Detail your approach to collaborative design, including how you partner with engineering, product management, and growth teams.

• Illustrate your methodology for iterating on designs based on user feedback, data analytics, and A/B testing results.

• Showcase your ability to define and maintain design systems, ensuring consistency and efficiency in product development.

📝 Enhancement Note: The portfolio is paramount, especially the requirement to demonstrate AI tool integration. Candidates should structure their case studies to explicitly call out the AI-assisted phases and the value derived from them.

💵 Compensation & Benefits

Salary Range: $180,000 – $230,000 annual base salary, commensurate with experience.

Benefits:

• Early-Stage Equity: Highly competitive stock options package.

• Health Insurance: Comprehensive medical, dental, and vision coverage.

• Flexible, Unlimited Vacation Policy: Encourages work-life balance and autonomy.

• In-person Retreats: Opportunities for team bonding and strategic alignment.

• Meal Stipends: Support for daily work expenses.

• Learning Stipend: Budget for professional development and skill enhancement.

• AI Tooling Budget: Dedicated resources for acquiring and utilizing advanced AI design tools.

Working Hours: Full-time, with an expectation of 40 hours per week, though flexibility is implied by the unlimited vacation policy and the nature of startup environments.

📝 Enhancement Note: The salary range provided is competitive for a senior-level product designer in San Francisco. The inclusion of an AI tooling budget is a unique perk that underscores the company's commitment to AI-native workflows. Research for San Francisco indicates this range aligns with senior and lead product designer roles, considering the high cost of living and competitive tech market.

🎯 Team & Company Context

🏢 Company Culture

Industry: Healthcare Technology (HealthTech), specifically focused on AI-driven autonomous medical care, starting with psychiatry.

Company Size: The company description mentions being backed by Y Combinator and having raised significant funding ($23M+), along with $5M+ ARR. This suggests a rapidly scaling startup, likely in the range of 50-150 employees, with potential for significant growth.

Founded: Founded recently (implied by rapid growth and funding rounds), focused on disrupting traditional healthcare economics with AI and blockchain technology.

Team Structure:

• The design team appears to be integrated within a lean, cross-functional structure, working closely with Growth, Product, Engineering, and Founders.

• This role is an individual contributor with end-to-end ownership, implying a collaborative environment where input is valued across disciplines.

• Collaboration is expected to be direct and hands-on, with a focus on shared ownership of outcomes. Methodology:

• Data-Driven Decision Making: Emphasis on using user research, product analytics, and experiment results to guide design improvements.

• AI-Native Workflow: Integration of AI tools is a core expectation, not an add-on, influencing the entire design process from ideation to implementation.

• Full-Stack Approach: Combining product design, growth creative, and direct codebase contribution for rapid iteration and ownership.

• First Principles Rebuilding: Reimagining healthcare delivery from the ground up using technology.

Company Website: https://legionhealth.com/

📝 Enhancement Note: Legion Health's mission to build "autonomous medical care" and leverage AI to "shift this industry’s economics from humans to tokens" indicates a highly innovative and potentially disruptive company culture. The focus on AI is not just a tool but a foundational element of their strategy.

📈 Career & Growth Analysis

Operations Career Level: This is a senior individual contributor role, referred to as "Full-Stack Product Designer." It sits at a crucial intersection of core product development and growth initiatives, demanding a high level of autonomy and impact.

Reporting Structure: The role reports into a product or design lead, working in close partnership with engineering and growth teams, and likely having direct interaction with founders due to the company's early stage.

Operations Impact: The designer will have a direct and significant impact on user acquisition, patient activation, retention, and overall user experience, influencing key business metrics like ARR and patient NPS. The role is pivotal in translating the company's innovative AI vision into tangible, user-friendly experiences.

Growth Opportunities:

• Design Leadership: Opportunity to shape and grow the design function as the company scales, potentially leading future design initiatives or teams.

• Skill Specialization & Expansion: Deepen expertise in AI-native design tools, front-end contribution, and growth experimentation within the unique context of healthcare.

• Strategic Influence: Contribute to product strategy and company direction through design insights and data-driven recommendations.

• Cross-Functional Mastery: Develop a comprehensive understanding of product development, engineering workflows, and growth marketing strategies.

📝 Enhancement Note: The "Full-Stack" nature of this role, combined with direct codebase contribution and AI tool integration, offers a unique growth trajectory for designers looking to bridge the gap between design and development in an AI-first environment.

🌐 Work Environment

Office Type: The job is explicitly listed as "Onsite in San Francisco, CA," indicating a physical office environment is required.

Office Location(s): San Francisco, California, United States. Specific office details beyond the city are not provided but can be assumed to be a modern tech office space conducive to collaboration.

Workspace Context:

• Collaborative Hub: The onsite requirement suggests an environment designed for close collaboration, brainstorming, and spontaneous interaction between design, engineering, product, and growth teams.

• AI-Centric Tools: Access to and expectation of using advanced AI design and development tools (v0, Claude Design, Cursor, etc.) will be integral to the workspace setup and daily workflow.

• Agile Development: The fast-paced startup environment likely employs agile methodologies, fostering rapid prototyping, testing, and iteration.

Work Schedule: Full-time, onsite in San Francisco. While specific hours aren't detailed, the flexible vacation policy suggests a results-oriented culture that values output over strict time-tracking, within the bounds of typical business operations.

📝 Enhancement Note: The mandatory onsite requirement in San Francisco points to a company that values in-person collaboration and team cohesion, which is common for early-stage startups aiming for rapid innovation.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Application & Portfolio Review: Focus on assessing the strength of your portfolio, particularly case studies demonstrating product design, visual craft, AI tool usage, and direct codebase contribution (PRs).

• Screening Call: Discussion with a recruiter or hiring manager to gauge fit, experience, and understanding of the role's unique requirements (AI-native design, full-stack contribution).

• Design Challenge/Case Study Presentation: Likely a take-home assignment or an in-depth discussion of a portfolio case study, focusing on problem-solving, design process, AI tool application, and impact. This may involve presenting well-scoped changes that could be implemented as PRs.

• Team Interviews: Meetings with cross-functional team members (Engineering, Product, Growth) to assess collaboration style, communication, and technical aptitude.

• Founder/Leadership Interview: Final discussion to evaluate strategic thinking, cultural fit, and long-term potential.

Portfolio Review Tips:

• Highlight AI Integration: Clearly present how AI tools were used in your workflow, detailing the problem, the AI's role, your subsequent actions, and the outcome. Use specific examples from tools like v0, Claude Design, Figma AI, or Cursor.

• Showcase End-to-End Ownership: For each case study, explicitly state what you personally owned, from initial concept to shipped product, including any code contributions.

• Quantify Impact: Wherever possible, use data and metrics to demonstrate the success of your designs, whether it's conversion rates, user engagement, or efficiency gains.

• Demonstrate Technical Aptitude: Include examples of well-scoped PRs or explain your process for testing and rolling out code changes safely.

• Tell a Story: Structure your case studies to clearly articulate the problem, your approach, the challenges, the solutions, and the results.

Challenge Preparation:

• AI Tool Proficiency: Be ready to discuss specific AI tools you've used, their strengths and weaknesses, and how you've integrated them into your design process.

• Code Contribution Strategy: Understand how to identify and scope small, impactful code changes for production PRs. Be prepared to discuss your Git workflow and collaboration with engineers.

• Growth Experimentation: Familiarize yourself with designing and testing growth experiments, including hypothesis formulation and performance analysis.

• Healthcare Context: Research Legion Health's mission, technology, and the specific challenges of designing for AI-driven healthcare.

📝 Enhancement Note: The application process heavily emphasizes practical demonstration of skills, particularly AI tool usage and code contribution. Candidates should prepare to articulate their process and impact with concrete examples.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma (with Figma AI capabilities), v0, Claude Design, Cursor. Expectation of advanced proficiency and integration of these AI tools into daily workflows.

• Version Control: Git, including experience with pull requests for code contributions.

• Design System Tools: Figma or similar platforms for component libraries and pattern definition.

Analytics & Reporting:

• Product Analytics tools (e.g., Amplitude, Mixpanel) for tracking user behavior, conversion funnels, and experiment results.

• A/B testing platforms for Growth experiments. CRM & Automation:

• While not explicitly mentioned for the designer, understanding how design impacts CRM workflows and user lifecycle communications (email, in-app messages) is beneficial.

📝 Enhancement Note: The explicit mention of AI design tools (v0, Claude Design, Figma AI, Cursor) is a key differentiator. Proficiency here is not just preferred but required, indicating a forward-thinking approach to design tooling.

👥 Team Culture & Values

Operations Values:

• Innovation & AI-First: A strong commitment to leveraging cutting-edge AI technology to revolutionize healthcare delivery.

• User-Centricity: Deep focus on creating world-class patient and clinician experiences that are high-quality, affordable, and scalable.

• Ownership & Accountability: Expectation of individuals taking end-to-end responsibility for their work, from concept to shipped result.

• Data-Driven Decision Making: Reliance on quantitative and qualitative data to inform strategy and design choices.

• Speed & Agility: A fast-paced environment that values rapid iteration, experimentation, and efficient execution.

• Collaboration: Emphasis on working closely and effectively with cross-functional teams.

Collaboration Style:

• Cross-Functional Integration: Designers will work seamlessly with Product, Engineering, and Growth, contributing directly to code and sharing insights from user research and analytics.

• Direct Communication: Open and honest communication is vital, with clear articulation of tradeoffs and rationale.

• Feedback Culture: An environment where constructive feedback is regularly exchanged to drive continuous improvement.

• Shared Learning: Encouragement to share knowledge and best practices, particularly around new AI tools and design methodologies.

📝 Enhancement Note: The culture at Legion Health appears to be driven by a mission to disrupt healthcare through AI, fostering a high-performance environment that values innovation, ownership, and data-driven results.

⚡ Challenges & Growth Opportunities

Challenges:

• Bridging AI and Human-Centric Design: Balancing the efficiency and capabilities of AI tools with the nuanced needs and trust requirements of healthcare users.

• End-to-End Ownership Complexity: Managing diverse responsibilities across core product, growth creative, and direct code contribution requires strong organizational and prioritization skills.

• Rapid Iteration in a Regulated Industry: Navigating the complexities of healthcare while maintaining the speed and agility expected in a startup environment.

• Defining and Evolving AI Workflows: Continuously exploring and refining how AI tools can best be integrated into the design and development process to maximize efficiency and quality.

Learning & Development Opportunities:

• AI Tool Mastery: Deep dive into leading AI design and development tools, becoming an expert in their application for product innovation.

• Full-Stack Design Practice: Gaining hands-on experience contributing code to production, significantly broadening skill sets.

• Healthcare Innovation: Immersing in the cutting-edge of AI-driven healthcare, understanding its unique challenges and opportunities.

• Startup Growth Dynamics: Experiencing rapid scaling and contributing to the foundational design strategy of a high-growth company.

• Strategic Impact: Directly influencing product direction and business outcomes in a critical role.

📝 Enhancement Note: This role presents a unique opportunity to grow at the intersection of AI, design, development, and healthcare, offering a steep learning curve and significant career advancement potential.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you used AI tools to significantly accelerate your design process. What was the problem, what tools did you use, what was the outcome, and what did you learn?"

• "How do you approach balancing the need for rapid iteration in a startup with the requirements for trust and clarity in healthcare design?"

• "Walk me through a complex user flow you designed. How did you ensure it was intuitive for both patients and clinicians, and what was your process for testing and refining it?"

• "What is your strategy for building and maintaining a design system that supports both core product consistency and rapid growth experimentation?" Company & Culture Questions:

• "What excites you most about Legion Health's mission to build autonomous medical care, and how do you see design playing a role in that?"

• "How do you ensure your design decisions are data-informed while also considering user empathy and qualitative feedback?"

• "Describe your experience working in a fast-paced, early-stage startup environment. What are your strategies for managing ambiguity and prioritizing effectively?" Portfolio Presentation Strategy:

• Lead with AI: Begin your portfolio presentation by highlighting your AI-native design case study. Clearly articulate the problem, the AI tools used, your specific contributions, and the measurable impact.

• Showcase Breadth and Depth: Present a mix of core product and growth/brand work. For each, clearly delineate your individual contribution, the problem you solved, and the outcome.

• Demonstrate Code Contribution: Be prepared to discuss your process for contributing code, showing well-scoped PR examples or explaining your workflow for testing and safe rollouts.

• Tell a Compelling Narrative: Structure your presentations to tell a clear story about the problem, your design process, the challenges faced, the solutions implemented, and the results achieved.

• Focus on Impact: Quantify your achievements whenever possible, using metrics to demonstrate the value of your design work.

📝 Enhancement Note: Candidates should prepare to speak extensively about their practical application of AI tools in design and development, their experience shipping code, and their ability to translate complex problems into user-friendly healthcare solutions.

📌 Application Steps

To apply for this Full-Stack Product Designer position:

• Submit your application through the provided link on Ashby HQ, ensuring your portfolio is prominently featured.

• Portfolio Customization: Tailor your portfolio to highlight case studies demonstrating core product design, brand/growth craft, and crucially, your AI-native design process and workflow. Explicitly detail your individual contributions and shipped outcomes.

• Resume Optimization: Ensure your resume clearly articulates your 5+ years of experience, proficiency with design tools (especially AI-native ones), experience with Git and PRs, and any healthcare industry experience. Quantify achievements where possible.

• Interview Preparation: Practice discussing your portfolio case studies, focusing on your problem-solving approach, design decisions, AI tool integration, and any code contributions. Prepare to answer strategic and behavioral questions related to design, AI, and the healthcare industry.

• Company Research: Thoroughly research Legion Health's mission, technology (AI-native care, autonomous medical care), funding, and recent news. Understand their market position and the challenges they aim to solve in healthcare.

⚠️ 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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