Senior Mobile UX Designer

📍 Job Overview

Job Title: Senior Mobile UX Designer

Company: WISEcode

Location: United States

Job Type: Contract

Category: Product Design / UX/UI

Date Posted: May 13, 2026

Experience Level: Senior (5-10 years)

Remote Status: Remote OK (within the United States)

🚀 Role Summary

• Lead the end-to-end design process for native mobile engagement systems on iOS and Android, focusing on creating intuitive and motivating user experiences.

• Architect and refine the full engagement loop strategy, incorporating interaction design, behavioral psychology, and progression models to drive sustained user retention.

• Translate product requirements and behavioral goals into comprehensive design artifacts, including wireframes, user flows, mockups, and interactive prototypes.

• Champion the use of AI tools within design workflows to accelerate ideation, prototyping, documentation, and iteration, thereby increasing velocity and scalability in a lean startup environment.

• Collaborate closely with Product Managers, Engineers, and Data Scientists in agile sprints to iterate and refine solutions, ensuring pixel-accurate implementation and delivering exceptional user-centered designs.

📝 Enhancement Note: While the raw job title is "Senior Mobile UX Designer", the responsibilities and required experience strongly indicate a Product Design role with a heavy emphasis on UX/UI, particularly in the realm of engagement and retention systems for consumer mobile applications. The role requires a deep understanding of behavioral design principles and the ability to translate them into actionable design strategies. The "Contract" employment type suggests this may be a project-based engagement or a fixed-term role.

📈 Primary Responsibilities

• Lead the end-to-end user experience (UX) and user interface (UI) design process for mobile applications (iOS and Android), specifically focusing on engagement and progression systems.

• Develop and own the complete engagement loop strategy, encompassing interaction design, motivation systems, and iterative progression models to foster user commitment.

• Translate complex product requirements and behavioral objectives into detailed wireframes, user flows, high-fidelity mockups, and interactive prototypes.

• Design intuitive, cross-generational mobile experiences that facilitate shared family interaction on a single device, catering to diverse user needs.

• Architect scalable interactive systems, including achievements, progression models, challenges, streaks, and reward frameworks, to enhance user motivation and loyalty.

• Design engagement loops that can evolve from lightweight gamification to more intricate interactive systems as the product matures.

• Apply principles of behavioral psychology and motivation theory to drive sustained user engagement, ensuring ethical design standards are maintained.

• Ensure interactive systems encourage curiosity and learning without resorting to manipulative or coercive mechanics.

• Design specifically to optimize retention metrics such as Day 1, Day 7, Day 30, and Day 90 engagement.

• Maintain and evolve a scalable mobile design system within Figma, ensuring consistency and efficiency across all design efforts.

• Ensure design consistency and usability across platforms by adhering to Apple’s Human Interface Guidelines and Google’s Material Design principles.

• Collaborate closely with Product Managers, Engineers, and Data Scientists within agile sprints to iterate on and refine design solutions.

• Leverage AI tools effectively to accelerate ideation, prototyping, documentation, and iteration throughout the design lifecycle.

• Champion AI-enabled design workflows that enhance velocity and scalability within a lean startup environment.

• Conduct user research and usability testing with both adult and youth audiences to validate and refine interaction models.

• Support the Quality Assurance (QA) process during development sprints by reviewing builds and ensuring pixel-accurate implementation of designs.

• Clearly communicate design rationale and strategic decisions to cross-functional teams and executive stakeholders.

📝 Enhancement Note: The responsibilities emphasize a strong focus on designing for engagement and retention within a mobile context. The mention of "engagement loop strategy," "progression models," and "retention metrics" points to a need for a designer who understands gamification, behavioral economics, and long-term user motivation. The requirement to design for "cross-generational" and "shared family interaction" adds a unique layer of complexity to the user-centered design approach. The emphasis on AI tools suggests a forward-thinking design team.

🎓 Skills & Qualifications

Education: [While not explicitly stated, a Bachelor's or Master's degree in Design, Human-Computer Interaction, Psychology, or a related field is typically expected for a Senior role. Candidates may substitute formal education with equivalent professional experience and a strong portfolio.]

Experience:

• Minimum of 5 years of professional experience in UX or Product Design.

• At least 2 years of experience specifically designing interactive systems or game-based engagement models within mobile applications is highly desirable.

• Proven track record of designing products that demonstrably drive measurable engagement and retention metrics.

• Experience designing for native iOS and Android mobile applications is essential.

Required Skills:

• UX/UI Design: Expertise in the full design lifecycle, from concept to handoff, for mobile applications.

• Mobile-First Design: Deep understanding of designing for iOS and Android platforms, adhering to platform-specific guidelines.

• Figma Proficiency: Expert-level proficiency in Figma, including experience managing shared libraries and scalable design systems.

• Interaction Design: Ability to craft intuitive user flows, wireframes, mockups, and interactive prototypes.

• Engagement System Design: Proven experience designing and implementing progression models, gamification elements, achievements, and reward frameworks.

• Behavioral Psychology & Motivation Theory: Strong understanding of intrinsic/extrinsic motivation, behavioral psychology, and retention design principles.

• User Research & Usability Testing: Experience conducting user research and usability testing, particularly with diverse age groups (adults and youth).

• Design Systems: Experience creating, maintaining, and scaling design systems.

• Agile Methodology: Comfort working within agile development teams, utilizing tools like JIRA or Notion.

• Communication: Excellent verbal and written communication skills, with the ability to clearly articulate design rationale to stakeholders.

• Ethical Design: Commitment to designing ethical engagement systems appropriate for family and youth audiences.

Preferred Skills:

• Portfolio: A strong portfolio demonstrating progression systems, motivation loops, or educational discovery experiences.

• AI-Enabled Design: Experience leveraging AI tools in design workflows.

• Consumer Wellness/Health Tech: Passion for or experience in health, education, consumer wellness, or mission-driven products.

• Cross-Generational Design: Experience designing for diverse age groups and shared family experiences on a single device.

• Data-Driven Design: Ability to interpret user data and metrics to inform design decisions.

📝 Enhancement Note: The requirements clearly lean towards a designer with a specialized focus on engagement and retention strategies, often found in mobile gaming or highly interactive consumer apps. The emphasis on "progression systems," "motivation loops," and "retention design" within the portfolio and experience sections is critical. The mention of "AI tools" is a significant differentiator, indicating a need for a forward-thinking candidate.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Mobile-First Excellence: Showcase a minimum of 5 years of work focused on mobile-first consumer products, highlighting end-to-end design processes.

• Engagement & Retention Focus: Include case studies that specifically demonstrate your experience in designing and implementing progression systems, motivation loops, or educational discovery experiences. Quantifiable results related to engagement and retention metrics are highly valued.

• System Architecture: Present examples of how you've architected scalable interactive systems, such as achievements, streaks, challenges, or reward frameworks, and explain their strategic purpose.

• Ethical Design Application: Demonstrate how you've applied behavioral psychology and motivation theory to drive engagement while adhering to ethical design standards, particularly for youth and family audiences.

• Figma & Design Systems: Provide evidence of expert-level Figma proficiency, including examples of maintained and scaled design systems, shared libraries, and adherence to platform guidelines (HIG, Material Design).

Process Documentation:

• End-to-End Design Process: Clearly articulate your design process from discovery and user research through wireframing, prototyping, interaction design, and final handoff to engineering, with a focus on mobile engagement systems.

• AI Integration in Workflow: Detail how you have leveraged AI tools within your design workflow to accelerate ideation, prototyping, documentation, or iteration, showcasing efficiency gains.

• Collaboration & Iteration: Illustrate your collaborative process with Product Managers, Engineers, and Data Scientists in agile environments, focusing on iterative refinement based on feedback and data.

• User Research & Validation: Document your approach to conducting user research and usability testing, including methodologies and how insights informed design decisions, especially for diverse age groups.

📝 Enhancement Note: The portfolio requirements are highly specific, demanding concrete examples of engagement system design and a demonstration of ethical application of behavioral psychology. The integration of AI in design workflows is a key differentiator for this role. Candidates should prepare to walk through their portfolio, explaining the "why" behind their design choices, particularly concerning engagement mechanics and retention strategies.

💵 Compensation & Benefits

Salary Range: As this is a contract role based in the United States, and specific salary details are not provided, a competitive hourly rate or project fee would be expected. Based on the "Senior" title and the demand for specialized mobile UX/Product Design skills, particularly in engagement systems and AI integration, typical contract rates can range from $70 to $120+ per hour, depending on experience, location, and the specific project scope.

Benefits: As this is a contract position, standard full-time employee benefits such as health insurance, paid time off, and retirement plans are typically not included. Contract employees may receive benefits through a third-party staffing agency if applicable, or may be responsible for their own benefits.

Working Hours: The role is listed with an implied 40-hour work week, typical for contract positions. However, the fast-paced startup environment may require flexibility and dedication beyond standard hours during critical project phases.

📝 Enhancement Note: Salary estimation for contract roles requires careful consideration of market rates, the specialized nature of the skills required (e.g., engagement design, AI tools), and the geographic location. The provided range is an estimate based on industry benchmarks for senior contract UX/Product Designers in the US. It's crucial for candidates to negotiate their rate based on their specific experience and the project's demands.

🎯 Team & Company Context

🏢 Company Culture

Industry: Health Technology / Consumer Wellness / AI-driven Food Data. WISEcode operates at the intersection of health tech and AI, aiming to revolutionize how individuals and families approach nutrition and food choices. This industry is characterized by rapid innovation, a focus on data integrity, and a growing emphasis on user engagement and behavior change.

Company Size: The description implies an early-stage startup environment. While not explicitly stated, this suggests a lean team, potentially fewer than 50 employees, where individual contributions have a significant impact.

Founded: The founding date is not provided, but the company's mission and focus on AI suggest a relatively modern venture.

Team Structure:

• Operations Team: The role reports into a Product Design function, likely within a broader Product or Engineering team. Collaboration is expected with Product Managers, Engineers, and Data Scientists.

• Reporting Structure: As a Senior Designer, the role may report directly to a Head of Product, Design Lead, or even a co-founder, depending on the company's current structure.

• Cross-functional Collaboration: The role emphasizes close, agile collaboration with Product Managers for requirements, Engineers for implementation, and Data Scientists for insights and metrics.

Methodology:

• Agile Development: The team operates within agile sprints, requiring iterative design and development cycles.

• AI-Driven Workflows: A key aspect of the company's methodology involves leveraging AI tools to enhance efficiency and innovation across the design lifecycle.

• Data-Informed Design: User research, usability testing, and analysis of retention metrics are integral to the design process, suggesting a data-informed approach.

Company Website: WISEcode.ai (derived from the domain).

📝 Enhancement Note: The company culture is described as mission-driven, focusing on health empowerment through intelligent technology. The startup environment suggests a fast-paced, collaborative, and hands-on atmosphere where individuals are expected to be proactive and adaptable. The integration of AI is a core strategic element.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a "Senior Mobile UX Designer," indicating a mid-to-late career stage for specialized UX/Product Designers. It requires significant autonomy, leadership in design execution, and the ability to influence product direction, particularly within the mobile engagement space.

Reporting Structure: The Senior Designer will likely report to a design lead, Head of Product, or potentially a founder, working closely with Product Managers and Engineers. This structure allows for direct impact and visibility.

Operations Impact: The designer will directly shape the user experience of WISEcode's core mobile product, with a significant influence on user engagement, retention, and ultimately, the company's success in empowering families with health information. The focus on engagement systems means this role is critical to user adoption and long-term product stickiness.

Growth Opportunities:

• Specialization: Deepen expertise in behavioral design, gamification, and AI-driven design within the health tech sector.

• Leadership: Potential to grow into a Design Lead or Head of Design role as the company scales, mentoring junior designers and defining the overall design strategy.

• Product Influence: Contribute significantly to product strategy and roadmap through design leadership and user advocacy.

• Industry Impact: Be part of a mission-driven company making a tangible difference in consumer health and wellness through innovative technology.

📝 Enhancement Note: This role offers a significant opportunity for a designer to make a substantial impact in a growing startup, particularly in a niche area like health tech engagement. The growth potential is tied to the company's success and the individual's ability to drive product innovation through design leadership.

🌐 Work Environment

Office Type: The company is based in the United States, and the role is advertised as "Remote OK," implying that the primary work environment will be remote. This suggests a distributed team culture.

Office Location(s): While the company headquarters are not specified, the remote status indicates that candidates within the United States are being considered.

Workspace Context:

• Remote Collaboration: Expect a digitally-enabled collaborative environment, relying heavily on tools like Figma, Slack, video conferencing, and project management software.

• Tools & Technology: Access to industry-standard design tools (Figma) and potentially AI design assistants will be central to the workflow.

• Team Interaction: While remote, there will be opportunities for regular interaction with cross-functional teams through scheduled meetings, design reviews, and collaborative working sessions.

Work Schedule: The standard work schedule is likely based on a 40-hour week, but the startup environment may necessitate flexibility. Adherence to agile sprint cadences will require consistent availability during core working hours for team collaboration.

📝 Enhancement Note: The remote nature of the role emphasizes the need for strong self-discipline, proactive communication, and proficiency with digital collaboration tools. Candidates should be comfortable working independently and effectively contributing to a distributed team.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Likely a brief call with a recruiter or hiring manager to assess basic qualifications, experience, and cultural fit.

• Portfolio Review: A dedicated session where candidates present their portfolio, focusing on mobile UX, engagement systems, and AI integration. Be prepared to discuss design decisions, processes, and outcomes.

• Design Challenge/Case Study: May involve a take-home assignment or a live design exercise to assess problem-solving skills, design thinking, and ability to apply concepts relevant to WISEcode's mission.

• Cross-functional Interviews: Meetings with Product Managers, Engineers, and potentially Data Scientists to evaluate collaboration skills, technical understanding, and ability to work within an agile framework.

• Founder/Executive Interview: A final discussion to assess strategic alignment, passion for the mission, and overall fit with the leadership team.

Portfolio Review Tips:

• Curate Strategically: Select 2-3 projects that best showcase your expertise in mobile UX, engagement systems, progression models, and ethical design for consumer products.

• Highlight Impact: For each project, clearly articulate the problem, your role, the design process, key decisions (especially regarding engagement mechanics), and measurable outcomes (engagement, retention). Quantify results whenever possible.

• Showcase AI Integration: If applicable, include a project where you leveraged AI tools and explain the benefits to your workflow or the final product.

• Demonstrate Process: Be ready to walk through your thought process, from user research and ideation to wireframing, prototyping, and handoff. Explain the "why" behind your design choices.

• Platform Expertise: Ensure examples highlight proficiency in both iOS and Android design, referencing HIG and Material Design principles where relevant.

Challenge Preparation:

• Understand the Mission: Research WISEcode's mission, target audience (families, youth), and AI-driven approach.

• Focus on Engagement: If given a design challenge, prioritize solutions that drive user engagement and retention, drawing on behavioral psychology principles.

• AI Application: Consider how AI could be integrated into your proposed solution or design process.

• Ethical Considerations: Be prepared to discuss the ethical implications of engagement design, especially for younger users.

• Conciseness and Clarity: Practice presenting your ideas clearly and concisely, focusing on the most impactful aspects of your solution.

📝 Enhancement Note: The interview process will heavily scrutinize the candidate's portfolio for specific skills related to engagement design and ethical considerations. The ability to articulate design rationale and demonstrate AI tool proficiency will be key. Candidates should prepare to present case studies that directly align with WISEcode's mission and product goals.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: Expert-level proficiency is a must for UI design, prototyping, and managing design systems.

• Prototyping Tools: Likely integrated within Figma, or potentially specialized tools for advanced interactive prototypes.

• AI Design Tools: Experience with AI-powered design assistants (e.g., for ideation, content generation, workflow automation) is highly valued and expected.

Analytics & Reporting:

• Analytics Platforms: Familiarity with mobile analytics tools (e.g., Amplitude, Mixpanel, Google Analytics for Mobile) to understand user behavior and retention metrics.

• Data Visualization Tools: Experience interpreting data visualizations and dashboards to inform design decisions.

CRM & Automation:

• Project Management: Proficiency with agile project management tools such as JIRA, Notion, Asana, or similar.

• Collaboration Tools: Slack, Zoom, Google Workspace (or similar) for team communication and collaboration.

📝 Enhancement Note: The technology stack emphasizes modern design and collaboration tools, with a specific emphasis on Figma and AI design assistants. Familiarity with mobile analytics platforms is crucial for a role focused on engagement and retention metrics.

👥 Team Culture & Values

Operations Values:

• Mission-Driven: A strong commitment to improving health and well-being through technology.

• Transparency: Open communication and clear sharing of information.

• Creativity & Innovation: Encouraging new ideas and exploring novel solutions, particularly leveraging AI.

• Collaboration: Working effectively across disciplines to achieve shared goals.

• Empowerment: Valuing individual contributions and empowering team members to leverage their unique strengths.

• Efficiency: A focus on streamlined processes and leveraging tools (like AI) to increase productivity in a lean startup.

Collaboration Style:

• Agile & Iterative: Working in sprints with continuous feedback loops.

• Cross-Functional Integration: Close collaboration between design, product, engineering, and data science.

• Data-Informed: Decisions are guided by user research, usability testing, and product analytics.

• Proactive Communication: Emphasis on clear and frequent communication, especially in a remote setting.

📝 Enhancement Note: The company culture appears to be a blend of mission-driven purpose, startup agility, and a forward-thinking approach to technology, particularly AI. Candidates should demonstrate an alignment with these values and a proactive, collaborative working style.

⚡ Challenges & Growth Opportunities

Challenges:

• Rapid Iteration in a Startup: Adapting to fast-paced development cycles, shifting priorities, and tight deadlines common in early-stage companies.

• Designing for Diverse Audiences: Creating engaging and ethical experiences that cater to both adults and youth within a family context.

• Balancing Engagement with Ethics: Developing motivational systems that drive retention without being manipulative or detrimental to user well-being.

• Integrating AI Seamlessly: Effectively incorporating AI tools into the design process and product features to enhance user experience and efficiency.

• Remote Collaboration: Maintaining strong team cohesion and effective communication in a fully remote environment.

Learning & Development Opportunities:

• Specialization: Deepen expertise in behavioral economics, gamification, and AI-driven design for consumer health applications.

• Scalability: Contribute to building scalable design systems and engagement frameworks for a growing user base.

• Product Strategy: Gain exposure to strategic product decision-making and influence the product roadmap.

• Industry Exposure: Work within the dynamic and impactful health technology sector.

📝 Enhancement Note: The challenges presented are typical of a senior role in a growing startup, requiring adaptability, strong problem-solving skills, and a commitment to ethical design. The growth opportunities are significant for individuals looking to specialize and gain strategic influence.

💡 Interview Preparation

Strategy Questions:

• Engagement System Design: "Describe a complex engagement system you designed. What were the core mechanics, how did you ensure ethical implementation, and what were the key retention metrics you targeted?" (Prepare a case study from your portfolio.)

• AI in Design Workflow: "How have you leveraged AI tools in your design process? Provide a specific example of how AI improved your efficiency or the quality of your output."

• Cross-Functional Collaboration: "Walk me through a time you had to collaborate with engineers and product managers on a challenging feature. How did you align on requirements and resolve design disagreements?"

• Ethical Design for Families: "How would you approach designing an engagement feature for a family app that needs to appeal to both children and parents, while also promoting healthy habits ethically?" (Consider hypothetical scenarios or examples from your experience.)

Company & Culture Questions:

• Mission Alignment: "What excites you most about WISEcode's mission to empower families with health information through AI?"

• Startup Environment: "How do you handle ambiguity and shifting priorities in a fast-paced startup environment?"

• Remote Work Philosophy: "What strategies do you employ to stay productive and connected when working remotely?"

Portfolio Presentation Strategy:

• Narrative Arc: Structure your portfolio presentation around a compelling narrative for each case study: problem, your unique contribution, process, key decisions (emphasizing engagement/ethical design), and quantifiable results.

• Focus on Impact: Clearly articulate the business and user impact of your designs, especially concerning engagement and retention metrics.

• Demonstrate Process & Tools: Show, don't just tell, your design process. Explain your rationale for tool choices (especially Figma and AI tools) and how they facilitated your work.

• Conciseness: Be mindful of time. Focus on the most impactful aspects of your projects and be prepared for follow-up questions.

📝 Enhancement Note: Interview preparation should heavily focus on the candidate's portfolio, specifically highlighting experience with engagement systems, ethical design, and AI tool utilization. Candidates should be ready to discuss their design philosophy and how it aligns with WISEcode's mission and the demands of a startup environment.

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📌 Application Steps

To apply for this Senior Mobile UX Designer position:

• Submit your application through the provided Lever.co link.

• Portfolio Customization: Curate your portfolio to prominently feature projects demonstrating mobile UX expertise, engagement system design, progression models, and ethical considerations.

• Resume Optimization: Tailor your resume to highlight keywords such as "UX Design," "Mobile Design," "Figma," "Engagement Systems," "Behavioral Psychology," "Retention Design," and "AI-Enabled Design." Quantify achievements wherever possible.

• Interview Preparation: Practice articulating your design process, rationale behind key decisions, and experience with AI tools. Prepare to present 2-3 key portfolio projects in detail.

• Company Research: Thoroughly research WISEcode's mission, product, and target audience to demonstrate genuine interest and alignment during interviews. Understand their AI-driven approach to health empowerment.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and industry-standard assumptions tailored for a Senior Mobile UX Designer role. All details, especially regarding compensation and specific benefits for contract roles, should be verified directly with the hiring organization or their representative before making application decisions.