Product Designer (m/f/d) for digital wellness app (iOS)

📍 Job Overview

Job Title: Product Designer (m/f/d) for digital wellness app (iOS)

Company: Lemio

Location: United States

Job Type: CONTRACTOR

Category: Product Design / Growth Operations

Date Posted: 2026-04-15

Experience Level: Mid-Level (2-5 years)

Remote Status: Fully Remote

🚀 Role Summary

• Design and iterate on user interfaces and experiences for an iOS digital wellness application, focusing on user growth and retention metrics.

• Implement A/B testing strategies for paywalls and onboarding flows to optimize Lifetime Value (LTV) per download and trial conversion rates.

• Leverage AI design tools to create compelling Vibe Marketing campaigns for social media and to rapidly prototype and test new feature concepts.

• Collaborate closely with the founding team to translate product vision into tangible design solutions that drive user engagement and business objectives.

• Contribute to a mission-driven company focused on improving mental health and combating smartphone addiction through innovative digital solutions.

📝 Enhancement Note: While the role is titled "Product Designer," the emphasis on "improving LTV per download," "trial start rate through paywall and onboarding design," and "KPIs" strongly indicates a focus on Growth Operations and Product-Led Growth (PLG) principles. The "hands-on" and "not a strategic role" comment suggests a focus on execution and iteration rather than high-level strategy. This role requires a blend of UX/UI design skills with a strong analytical and data-driven approach to product development.

📈 Primary Responsibilities

• Design and optimize user onboarding flows to maximize trial conversion rates and user engagement from the initial download.

• Conduct A/B testing on paywall designs and subscription models to enhance revenue per user and improve Lifetime Value (LTV).

• Utilize AI design tools for rapid prototyping, concept validation, and the creation of visually engaging marketing assets for social media campaigns.

• Collaborate with the product team to define and implement user research methodologies, translating insights into actionable design improvements.

• Analyze key performance indicators (KPIs) related to user acquisition, retention, and monetization, and iterate on designs based on data-driven feedback.

• Develop and maintain design systems and style guides to ensure brand consistency and efficient design execution across the iOS application.

• Partner with engineering teams to ensure accurate and high-quality implementation of designs, providing clear specifications and support.

• Contribute to the product roadmap by identifying opportunities for design-led growth initiatives and feature enhancements.

📝 Enhancement Note: The responsibilities are framed to highlight the operational aspects of design, focusing on quantifiable outcomes like LTV and trial rates, and the use of tools for rapid iteration and testing, which are core to growth and operations functions.

🎓 Skills & Qualifications

Education: A Bachelor's degree in Design, Human-Computer Interaction, Psychology, or a related field is preferred but not strictly required if equivalent practical experience can be demonstrated.

Experience: A minimum of 2 years of professional work experience in product design, UX/UI design, or a related field, with a proven track record of working on mobile applications (preferably iOS).

Required Skills:

• Strong proficiency in UI/UX design principles and best practices for mobile applications, particularly iOS.

• Experience with design and prototyping tools such as Figma, Sketch, Adobe XD, or similar.

• Demonstrated experience in A/B testing and data-driven design, with a focus on improving user conversion rates and engagement metrics (LTV, trial start rate).

• Familiarity with user research methodologies and the ability to translate user feedback into design solutions.

• Experience designing and optimizing user onboarding flows and paywall/subscription interfaces.

• Understanding of key performance indicators (KPIs) relevant to mobile app growth and monetization.

• Excellent communication and collaboration skills, with the ability to articulate design decisions and rationale effectively.

Preferred Skills:

• Experience with AI design tools for rapid prototyping, content generation, or campaign creation.

• Familiarity with "Vibe Marketing" concepts and their application in social media campaigns.

• Knowledge of digital wellness, mental health, or behavioral design principles.

• Experience working in a startup environment and contributing to product growth strategies.

• Basic understanding of mobile development processes and constraints.

📝 Enhancement Note: The requirements emphasize practical experience with growth-related design tasks (paywalls, onboarding, LTV optimization) and the use of modern design and AI tools, aligning with the "hands-on" and execution-focused nature of the role.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase at least 2-3 case studies demonstrating direct impact on key growth metrics such as LTV, trial conversion rates, or user engagement.

• For each case study, clearly articulate the problem, your design process, the solutions implemented, and the measurable results achieved.

• Include examples of A/B testing scenarios where your design decisions led to quantifiable improvements.

• Demonstrate experience with designing and optimizing paywalls, subscription flows, or onboarding sequences.

Process Documentation:

• Be prepared to discuss your systematic approach to user research and how you translate findings into design iterations.

• Explain your process for conducting A/B tests, from hypothesis generation to design implementation and analysis of results.

• Detail your workflow for collaborating with product managers, engineers, and other stakeholders to ensure successful design implementation.

• Demonstrate how you approach problem-solving for user acquisition, retention, and monetization challenges.

📝 Enhancement Note: The portfolio requirements are heavily geared towards demonstrating a data-driven, results-oriented approach to design, aligning with growth operations principles, rather than purely aesthetic or conceptual design work.

💵 Compensation & Benefits

Salary Range: As this is a contractor position with compensation "tbd depending on seniority," and the role is based in the United States, a competitive hourly rate or project-based fee would be expected. For a mid-level Product Designer with 2-5 years of experience specializing in growth and mobile (iOS), typical contractor rates in the US can range from $50 to $90+ per hour, depending on specific skills, portfolio strength, and the urgency of the need.

Benefits:

• Impactful Work: Opportunity to contribute to a mission-driven product aimed at improving global mental health and combating smartphone addiction.

• Global Scaling Potential: Be part of a project with significant potential for worldwide impact and growth.

• Founding Team Support: Direct collaboration with experienced founders from the Sigma Squared Society, offering mentorship and a fast-paced learning environment.

• Agile & Actionable Environment: Experience a company culture that values speed, execution, and quick decision-making.

• Team Events: Participation in team parties, sports activities, and trips as rewards for hard work and success.

• Flexibility: As a remote contractor, enjoy the flexibility to work from any location within the United States.

Working Hours: While not explicitly stated, typical contractor roles in the US often involve a commitment of around 40 hours per week. The emphasis on "getting hands dirty" suggests a dedicated effort may be required, but the remote nature offers flexibility in scheduling as long as deliverables are met.

📝 Enhancement Note: The salary estimate is based on current US contractor market rates for mid-level designers with specialized skills. The benefits are derived directly from the provided text, emphasizing the unique aspects of the startup's culture and mission.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology / Mobile Applications / Digital Wellness / HealthTech

Company Size: Startup (Small team, likely under 20 employees given the mention of two founders and a core team)

Founded: The company is likely relatively young, as indicated by the "young but already have quite some founding experience" statement and the founders' involvement in the Sigma Squared Society, which often supports early-stage ventures.

Team Structure:

• The core team appears to consist of the two founders, Tom and Stephan, who are actively involved in product and operations.

• The design function will likely report directly to one of the founders, given the "direct work with Tom" statement.

Methodology:

• Data-Driven Iteration: A strong focus on metrics (LTV, trial starts) and A/B testing for continuous improvement.

• Rapid Prototyping & Testing: Utilization of AI design tools to quickly validate ideas and features before full development.

• Outcome-Oriented: Emphasis on "impact" and "execution" rather than lengthy strategic planning.

• Agile & Fast-Paced: A culture that values speed, actionability, and quick pivots.

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

📝 Enhancement Note: The company culture is characterized by a strong mission, a fast-paced startup environment, and a focus on measurable impact, driven by experienced founders. The operations aspect is embedded in the product development and growth strategies.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a mid-level Product Designer with a significant focus on Growth Operations. While the title is "Product Designer," the responsibilities and expectations align with a Growth Designer or Product Operations specialist who uses design skills to drive business metrics. The "not a strategic role" comment implies a focus on execution and iteration rather than high-level strategy setting.

Reporting Structure: You will report directly to one of the founders, likely Tom, who is described as "a product person by heart." This offers direct access to decision-makers and a clear line of communication.

Operations Impact: Your work will have a direct and measurable impact on Lemio's core business objectives: increasing user lifetime value, improving trial conversion rates, and driving overall user acquisition and retention. The design decisions made will directly influence revenue and the company's ability to scale.

Growth Opportunities:

• Specialization in Growth Design: Deepen expertise in product-led growth, A/B testing, paywall optimization, and user onboarding strategies within a mission-driven context.

• Leadership Potential: As an early member of the design function, there's potential to shape the design process, build out a design system, and eventually lead design initiatives as the company grows.

• Entrepreneurial Experience: Gain hands-on experience in a startup environment, working closely with founders and contributing to key business decisions that drive product success.

• Skill Expansion: Opportunity to learn and implement AI design tools, Vibe Marketing techniques, and advanced analytics for product optimization.

📝 Enhancement Note: The growth analysis focuses on how the role, despite its title, offers significant opportunities within the growth operations and product-led design space, with clear pathways for skill development and impact.

🌐 Work Environment

Office Type: Fully Remote. This position is a telecommuting role, allowing you to work from anywhere within the United States.

Office Location(s): Not applicable, as the role is fully remote.

Workspace Context:

• Independent Work: You will be expected to manage your own time and workflow effectively from your remote workspace.

• Digital Collaboration Tools: Reliance on digital communication and collaboration tools (e.g., Slack, potentially project management software) for interaction with the founders and any other team members.

• Focus on Deliverables: The environment is likely results-driven, with an emphasis on delivering high-quality design work that meets defined KPIs.

• Mission-Driven: A work environment that is deeply connected to a meaningful mission of improving mental health and digital well-being.

Work Schedule: While the specific working hours are not detailed, a contractor role typically implies a commitment of around 40 hours per week. The remote nature allows for flexibility in when work is done, but the emphasis on "getting hands dirty" suggests a need for consistent availability and dedication to meeting project deadlines and objectives.

📝 Enhancement Note: The remote nature is a key aspect, and the context emphasizes the need for self-discipline and effective digital collaboration within a results-oriented, mission-driven startup.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Likely a brief call with a founder (Tom or Stephan) to assess initial fit, motivation, and understanding of the role's growth-focused nature.

• Portfolio Review & Discussion: A deeper dive into your portfolio, focusing on case studies that demonstrate impact on LTV, trial conversion, and user engagement. Expect to discuss your design process, A/B testing experience, and how you used data to drive decisions.

• Skills Assessment/Challenge: You may be given a small design challenge or asked to walk through a hypothetical scenario related to optimizing a paywall or onboarding flow, potentially involving AI tools.

• Cultural Fit & Motivation: Discussions about your passion for mental health, healthy lifestyles, and your willingness to "get your hands dirty" in a startup environment.

Portfolio Review Tips:

• Quantify Everything: For each case study, clearly state the problem, the solution, and the quantifiable results (e.g., "Increased trial start rate by X%", "Improved LTV by Y%").

• Focus on Growth: Select projects that explicitly show how your design work contributed to user acquisition, activation, retention, or revenue.

• Process Over Polish: While aesthetics matter, emphasize your process for problem-solving, iteration, and data analysis. How did you arrive at your solution?

• AI Tool Integration: If you have experience with AI design tools, showcase how you've used them to accelerate your workflow or test ideas.

• Be Ready to Discuss "Why": Be prepared to explain the rationale behind your design choices, especially concerning user psychology and business objectives.

Challenge Preparation:

• Hypothetical Scenarios: Think about common challenges in mobile app growth: low trial conversion, low LTV, user drop-off during onboarding.

• Design Thinking: Practice applying a structured design thinking approach (empathize, define, ideate, prototype, test) to these scenarios.

• Metrics-Driven Solutions: Frame your solutions around specific KPIs and how you would measure their success.

• AI Tool Application: Consider how you might use AI tools to rapidly prototype or test potential solutions for these challenges.

📝 Enhancement Note: This section provides actionable advice for tailoring the application and portfolio specifically to the growth-focused nature of this product design role, emphasizing data and measurable impact.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma, Sketch, Adobe XD, or similar industry-standard tools.

• AI Design Tools: Tools capable of generating design assets, copy, or assisting in rapid prototyping (e.g., Midjourney, Stable Diffusion for visuals; AI copywriters; potentially AI-powered UX tools).

• Collaboration & Communication: Slack, Zoom, potentially project management tools like Asana, Trello, or Jira.

Analytics & Reporting:

• Product Analytics Platforms: Familiarity with tools like Amplitude, Mixpanel, or Firebase Analytics is highly beneficial for understanding user behavior and tracking KPIs.

• A/B Testing Tools: Experience with platforms like Optimizely, VWO (Visual Website Optimizer), or in-app A/B testing frameworks.

CRM & Automation:

• While not explicitly mentioned, an understanding of how design impacts CRM data or user segments managed by marketing automation tools can be a plus.

📝 Enhancement Note: The tools listed are specific to product design, growth operations, and the emerging use of AI in the design process, reflecting the job description's focus.

👥 Team Culture & Values

Operations Values:

• Impact-Driven: A core value is making a significant positive impact on humanity, specifically in mental health and attention span.

• User-Centricity: A strong focus on understanding and serving users, coupled with a passion for KPIs that reflect user success and business growth.

• Actionability & Speed: A culture that prioritizes execution, quick decision-making, and moving fast to achieve goals.

• Collaboration & Hustle: A willingness to "get hands dirty," work hard, and collaborate closely as a team.

• Fun & Reward: An appreciation for celebrating successes and enjoying the journey through team events and activities.

Collaboration Style:

• Direct & Open: Expect close collaboration with the founders, involving direct feedback and open communication.

• Cross-Functional: While the team is small, collaboration will likely extend across product, design, and potentially early marketing or growth initiatives.

• Hands-On: A collaborative style that involves active participation and a "doer" mentality, rather than purely supervisory roles.

• Mission-Aligned: A shared commitment to the company's overarching mission will likely foster a cohesive and motivated team dynamic.

📝 Enhancement Note: The culture emphasizes a blend of meaningful work, rapid execution, and a team-oriented approach, all driven by the founders' vision and experience.

⚡ Challenges & Growth Opportunities

Challenges:

• Startup Pace & Ambiguity: Navigating the fast-paced and sometimes ambiguous environment of a growing startup, requiring adaptability and proactive problem-solving.

• Balancing Design & Growth Metrics: Effectively balancing user experience quality with the need to drive specific business KPIs like LTV and trial conversion rates.

• Leveraging AI Tools: Mastering and integrating new AI design tools into the workflow to maximize efficiency and innovation.

• Remote Collaboration: Maintaining strong communication and collaboration while working remotely within a small, distributed team.

• Mission Criticality: The high stakes of the company's mission mean that design decisions have significant implications for user well-being.

Learning & Development Opportunities:

• Growth Design Specialization: Become an expert in product-led growth, user acquisition, and retention strategies through practical application.

• AI Tool Proficiency: Gain hands-on experience with cutting-edge AI design technologies, enhancing your skillset for the future of design.

• Startup Operations: Learn the intricacies of building and scaling a tech startup, working directly with founders and contributing to critical business functions.

• Impactful Product Development: Develop products that have a tangible positive impact on millions of users' mental health and digital habits.

• Mentorship: Benefit from the experience and networks of founders with backgrounds in impactful organizations.

📝 Enhancement Note: The challenges are framed as opportunities for growth and skill development, typical of a startup environment, especially for roles that blend design with operational execution.

💡 Interview Preparation

Strategy Questions:

• "How would you approach designing a paywall to increase trial subscriptions by 15% for a digital wellness app?" (Focus on A/B testing, user segmentation, value proposition).

• "Describe a time you used data to significantly improve a user onboarding flow. What metrics did you track, and what were the results?" (Quantifiable impact, process, user psychology).

• "How can AI design tools be leveraged to test new feature concepts for an iOS app before full development?" (Prototyping, rapid iteration, efficiency).

Company & Culture Questions:

• "What interests you most about Lemio's mission to combat smartphone addiction and improve mental health?" (Genuine interest, alignment with values).

• "How do you feel about working in a 'hands-on' role where you're expected to execute and iterate quickly, rather than focusing solely on high-level strategy?" (Willingness to execute, startup mindset).

Portfolio Presentation Strategy:

• Storytelling with Data: Structure your case studies like compelling stories, clearly defining the problem, your unique approach, the solution, and most importantly, the quantifiable results you achieved.

• Focus on Growth Impact: Highlight how your design contributions directly led to improvements in LTV, trial conversion, engagement, or other key growth metrics.

• Showcase Your Process: Be ready to walk through your thought process, research, iteration, and decision-making, especially how you incorporated data and user feedback.

• Demonstrate AI Tool Usage: If applicable, show examples of how AI tools accelerated your work or enabled new possibilities.

• Conciseness: Be prepared to present your most impactful work concisely, respecting the interviewer's time.

📝 Enhancement Note: These questions and strategies are tailored to assess the candidate's suitability for a growth-oriented, execution-focused design role within a mission-driven startup.

📌 Application Steps

To apply for this product design position:

• Submit your application through the provided link on join.com.

• Curate Your Portfolio: Select 2-3 of your most impactful case studies that demonstrate direct contributions to growth metrics (LTV, trial conversion, engagement). Ensure clear articulation of problems, solutions, and quantifiable results.

• Tailor Your Resume: Highlight experience with mobile app design (iOS), A/B testing, user onboarding, paywall optimization, and any use of AI design tools. Emphasize achievements with specific numbers.

• Prepare Your Pitch: Be ready to articulate your passion for the mission, your growth design philosophy, and how your skills align with Lemio's needs. Practice presenting your portfolio and discussing your process.

• Research Lemio: Understand their mission, target audience, and the digital wellness space. Be prepared to discuss how your design approach can contribute to their specific goals.

⚠️ 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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