UX/UI Designer

📍 Job Overview

Job Title: UX/UI Designer

Company: Happy Mammoth LLC

Location: Barcelona, Catalonia, Spain

Job Type: FULL_TIME

Category: UX/UI Design (E-commerce Focus)

Date Posted: 2026-09-09

Experience Level: 2-5 Years

Remote Status: Fully Remote

🚀 Role Summary

• Design and optimize user interfaces and user experiences for a direct-to-consumer (DTC) e-commerce platform, focusing on conversion rate optimization (CRO).

• Develop visually compelling and intuitive campaign creatives that align with brand guidelines and drive customer engagement.

• Collaborate closely with the e-commerce team to enhance website functionality, user flow, and overall customer journey across desktop and mobile devices.

• Translate business briefs and rough concepts into high-fidelity, polished designs that achieve both aesthetic quality and measurable business impact.

• Ensure a consistent visual identity and brand experience across all digital touchpoints, from product pages to marketing campaigns.

📝 Enhancement Note: This role is specifically focused on the e-commerce storefront and campaign creatives, not general product design or brand identity. The emphasis is on driving conversions through strong UI/UX principles within a DTC context.

📈 Primary Responsibilities

• Design and iterate on product pages, ensuring optimal placement of key information, calls-to-action (CTAs), trust signals, and benefit highlights to maximize conversion.

• Create visually engaging and persuasive campaign creatives that effectively communicate marketing messages and encourage desired user actions.

• Conduct UX research and analysis to identify areas for website redesign and improvement, aiming to enhance user experience, engagement, and conversion rates.

• Transform initial briefs, concepts, and campaign ideas into polished, high-quality designs, ensuring adherence to brand standards and business objectives.

• Map out and refine user journeys to ensure a seamless and frictionless experience from initial interaction through to purchase.

• Maintain and enforce visual design consistency across the website, campaign assets, and other digital platforms.

• Rapidly adapt and refine designs based on performance data, A/B test results, user feedback, and evolving business priorities.

• Ensure all designs are fully responsive and optimized for a flawless experience on both desktop and mobile devices.

📝 Enhancement Note: The responsibilities highlight a strong focus on conversion optimization and a data-informed design approach, critical for a DTC e-commerce environment. The need to "think through the user journey" and ensure "natural and without friction" flow emphasizes a deep understanding of user behavior.

🎓 Skills & Qualifications

Education: While no specific degree is mandated, a strong understanding of design principles equivalent to a Bachelor's degree in Graphic Design, Interaction Design, Human-Computer Interaction, or a related field is expected.

Experience: Minimum of 2+ years of dedicated UX/UI design experience specifically for e-commerce or direct-to-consumer (DTC) brands. Experience within the health, wellness, or supplements industry is a significant advantage.

Required Skills:

• Proven track record as a UX/UI Designer with a robust portfolio showcasing digital and web design work for e-commerce or DTC brands.

• Minimum 2+ years of direct experience designing for e-commerce or DTC brands (essential).

• Strong UI design skills with meticulous attention to detail and a high standard for visual quality and aesthetics.

• Solid understanding of UX principles, user-centered design methodologies, and conversion-optimized design strategies.

• Ability to effectively balance strong visual design with user experience requirements and overarching business goals.

• Proficient understanding of conversion principles and how design elements influence user behavior and decision-making.

• Experience designing responsive websites that perform exceptionally well on both desktop and mobile platforms.

• High proficiency in Figma for design, prototyping, and collaboration.

• Demonstrated ability to take a concept or rough brief and develop it into a polished, well-thought-out, and actionable design. Preferred Skills:

• Experience in the health, wellness, or supplements industry.

• Familiarity with A/B testing methodologies and interpreting performance data to inform design decisions.

• Basic understanding of front-end development principles (HTML, CSS) to better collaborate with developers.

• Experience with user research techniques and usability testing.

• Knowledge of current e-commerce design trends and best practices.

📝 Enhancement Note: The explicit requirement for 2+ years in e-commerce/DTC design and Figma proficiency are critical filters. The preference for health/wellness experience suggests the company values domain-specific knowledge.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A curated portfolio showcasing a minimum of 3-5 significant e-commerce or DTC design projects.

• Each project should clearly articulate the problem statement, your role, the design process undertaken, and the measurable outcomes (e.g., conversion lift, engagement increase, reduced bounce rate).

• Demonstrations of UI design craft, including high-fidelity mockups, style guides, and design systems elements if applicable.

• Evidence of UX thinking, such as user journey maps, wireframes, and prototypes, illustrating the thought process behind design decisions.

• Specific examples of conversion-focused design elements and how they were implemented and tested.

• Designs demonstrating responsiveness across various devices (desktop, tablet, mobile). Process Documentation:

• Clarity on your design process from brief to final delivery, including how you gather requirements, conduct research, ideate, prototype, and iterate.

• Examples of how you have used data (e.g., analytics, A/B test results) to inform and refine your design decisions.

• Documentation of how you ensure design consistency and adherence to brand guidelines across multiple projects and platforms.

• Examples of how you have collaborated with cross-functional teams (e.g., marketing, development) to bring designs to life.

📝 Enhancement Note: A strong portfolio is paramount for this role. The emphasis should be on quantifiable results and demonstrating a clear understanding of the e-commerce conversion funnel and DTC customer journey.

💵 Compensation & Benefits

Salary Range: As this is a contractor role and specific salary figures are not provided, a competitive market rate for a UX/UI Designer with 2-5 years of experience in a remote, EU-hours-aligned role in Spain would typically range from €35,000 to €55,000 annually (gross). This estimate is based on regional salary benchmarks for design professionals in Barcelona, considering the cost of living and the demand for specialized e-commerce design skills.

Benefits:

• Strong Salary Package: Competitive compensation commensurate with skills and experience.

• Paid Holidays: Generous paid time off for rest and rejuvenation.

• Work from Anywhere: Fully remote flexibility, allowing you to work from any location.

• Vibrant Global Team: Opportunity to collaborate with a diverse and international team.

• Flexible Working Hours: Autonomy to manage your work schedule within EU hours.

• Growth Opportunities: Access to free books, courses, and resources for professional development.

• Dynamic Work Environment: Exposure to exciting challenges in a fast-paced setting.

• Make a Difference: Contribute to a mission focused on improving customer health and well-being.

Working Hours: This is a full-time contractor role, typically requiring approximately 40 hours per week. While the role offers flexible working hours, candidates must be available during EU business hours (GMT) for effective collaboration with the international team.

📝 Enhancement Note: The salary estimate is based on typical contractor rates in Spain for this experience level and specialization. The benefits package emphasizes flexibility and professional growth, aligning with modern remote work expectations.

🎯 Team & Company Context

🏢 Company Culture

Industry: Food Tech, Health & Wellness, E-commerce (specifically gut health, digestive aids, and microbiome-focused supplements). Happy Mammoth operates in a rapidly growing market focused on natural health solutions and consumer well-being.

Company Size: Happy Mammoth LLC is described as a "rapidly expanding" company with a presence in the US, Australia, and Europe, suggesting a mid-sized to large organization with a significant international footprint and potentially a growing workforce.

Founded: While the founding date is not specified, the company's "rapid expansion" and established presence across multiple continents indicate a mature yet growth-oriented organization.

Team Structure:

• The UX/UI Designer will be embedded within the e-commerce team, indicating a specialized focus within a larger marketing or digital operations department.

• Collaboration will be cross-functional, involving marketing, product management, and potentially development teams to execute website and campaign designs.

• The team is described as "vibrant, diverse, and international," suggesting a collaborative and inclusive work environment. Methodology:

• Data-Driven Design: Emphasis on conversion optimization, A/B testing, and using performance data to inform design decisions.

• Agile Adaptation: Ability to adapt and improve designs quickly based on feedback and business priorities, suggesting an agile or iterative design process.

• Customer-Centricity: Focus on understanding the user journey and creating intuitive, friction-free experiences to meet customer needs and drive business goals.

Company Website: https://store.happymammoth.com/

📝 Enhancement Note: The company's focus on health and wellness supplements, combined with its DTC e-commerce model, means design decisions will heavily impact customer acquisition and retention, requiring a strong understanding of consumer psychology and conversion best practices.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a specialist UX/UI Designer with a clear focus on e-commerce and DTC conversion. It's an individual contributor role that offers significant autonomy and direct impact on revenue-generating activities. The experience level (2-5 years) suggests an intermediate to senior specialist.

Reporting Structure: The designer will be embedded within the e-commerce team, likely reporting to an E-commerce Manager, Head of Digital Marketing, or a Lead UX/UI Designer. This structure allows for direct collaboration with stakeholders responsible for website performance and campaign execution.

Operations Impact: The role has a direct and significant impact on the company's revenue. By designing and optimizing product pages, campaign creatives, and the overall user journey, the UX/UI Designer directly influences conversion rates, average order value, and customer lifetime value, making it a critical function within the GTM (Go-To-Market) operations.

Growth Opportunities:

• Skill Specialization: Deepen expertise in e-commerce UX/UI, conversion rate optimization (CRO), and DTC strategies.

• Leadership Potential: Opportunity to become a lead designer on key projects or mentor junior designers as the team grows.

• Cross-Functional Exposure: Gain broader experience by working closely with marketing, product, and development teams, potentially leading to roles in product management or digital strategy.

• Continuous Learning: Access to provided resources like books and courses to stay current with design trends, tools, and e-commerce best practices.

📝 Enhancement Note: The role offers a clear path for growth within a specialized e-commerce design function, with opportunities to influence business strategy through design expertise.

🌐 Work Environment

Office Type: This is a fully remote contractor role, meaning there is no central office to work from. The "work from anywhere" benefit provides maximum flexibility.

Office Location(s): While the company has a global presence, this specific role is remote, and candidates are restricted from the US, UK, and Netherlands. This implies the company may have operational or legal reasons for these restrictions, potentially related to contractor agreements or tax implications. The role requires availability during EU hours (GMT).

Workspace Context:

• Autonomous Environment: The remote nature requires self-discipline, strong time management, and effective communication skills.

• Digital Collaboration Tools: Reliance on tools like Figma, Slack, email, and video conferencing for team interaction and project management.

• Flexible Setup: Employees are encouraged to set up their workspace in a way that maximizes productivity and comfort, whether at home, a café, or a co-working space.

Work Schedule: The role offers flexible working hours, allowing individuals to structure their workday around their personal preferences and peak productivity times, provided they are available and responsive during core EU business hours for meetings and urgent tasks.

📝 Enhancement Note: The "work from anywhere" combined with "flexible working hours" and "EU hours availability" creates a unique work-life integration opportunity, but requires strong self-management and asynchronous communication skills.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Review of CV and portfolio to assess experience, skills, and alignment with e-commerce/DTC requirements.

• Portfolio Presentation & Technical Interview: Candidates will likely present their portfolio, walking through key e-commerce/DTC projects, discussing their design process, problem-solving approach, and measurable results. Expect questions on UX principles, conversion optimization, and Figma proficiency.

• Team/Cultural Fit Interview: Discussion with members of the e-commerce team to assess collaboration style, communication skills, and fit with the company's dynamic and international culture.

• Final Interview: Potentially with a senior leader to discuss overall fit, long-term aspirations, and finalize terms.

Portfolio Review Tips:

• Quantify Achievements: For each project, clearly state your role, the specific problem addressed, your design solution, and quantifiable results (e.g., "Increased conversion rate by 15%," "Reduced bounce rate by 10%").

• Showcase DTC/E-commerce Focus: Highlight projects specifically related to product pages, checkout flows, landing pages, or campaign creatives for online stores. Emphasize how your designs drove sales or engagement.

• Demonstrate UX Process: Include wireframes, user flows, and prototypes to show your thought process and how you considered the user journey and conversion path.

• Highlight Figma Skills: Showcase your proficiency in Figma, perhaps by including examples of components, auto-layout usage, or interactive prototypes.

• Tell a Story: Structure your portfolio presentation as a narrative for each project, guiding the interviewers through your decision-making process and the impact of your work.

Challenge Preparation:

• Be prepared for a design challenge that might involve optimizing a given product page or creating campaign creatives based on a brief.

• Focus on demonstrating your ability to quickly grasp business objectives, apply UX/UI best practices, and produce a conversion-focused design solution.

• Practice articulating your design choices clearly and concisely, explaining the rationale behind your UI elements and UX flow.

📝 Enhancement Note: The interview process heavily relies on portfolio demonstration and the ability to articulate how design directly impacts business outcomes in an e-commerce context.

🛠 Tools & Technology Stack

Primary Tools:

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

• Design Systems: While not explicitly mentioned, familiarity with creating or working within design systems for consistency is highly valued.

• Prototyping Tools: Figma's built-in prototyping capabilities are key.

Analytics & Reporting:

• Web Analytics Platforms: Familiarity with tools like Google Analytics, Adobe Analytics, or similar platforms to understand user behavior, track conversions, and identify design improvement opportunities.

• A/B Testing Tools: Experience with platforms like Optimizely, VWO, or Google Optimize for testing design variations and measuring their impact on conversion rates.

CRM & Automation:

• While not a direct requirement for the designer, understanding how CRM data and marketing automation tools (e.g., Klaviyo, Mailchimp) influence customer journeys and content strategy can be beneficial.

📝 Enhancement Note: Figma is the non-negotiable tool. Understanding how design integrates with analytics and A/B testing platforms is crucial for demonstrating a data-driven approach to conversion optimization.

👥 Team Culture & Values

Operations Values:

• Impact-Driven: A strong focus on delivering measurable business results, particularly in conversion rates and revenue generation.

• Customer-Centricity: Designing with the end-user experience at the forefront, aiming for intuitive and enjoyable interactions.

• Collaboration: Working effectively within a global, diverse, and remote team, valuing open communication and feedback.

• Efficiency & Agility: Embracing a fast-paced environment, adapting quickly to new information, and iterating designs efficiently.

• Continuous Improvement: A commitment to learning, growth, and constantly seeking ways to enhance both personal skills and business outcomes.

Collaboration Style:

• Remote-First: Open communication via digital channels (Slack, email, video calls) is paramount.

• Cross-Functional Integration: Designers work closely with marketing, e-commerce management, and potentially developers, requiring strong communication and the ability to translate design concepts to non-design stakeholders.

• Feedback Culture: Openness to receiving and providing constructive feedback to improve designs and processes.

📝 Enhancement Note: The company culture emphasizes agility, results, and collaboration in a remote setting, requiring designers to be proactive communicators and adaptable team players.

⚡ Challenges & Growth Opportunities

Challenges:

• Remote Collaboration: Effectively communicating design ideas and collaborating with a distributed international team without in-person interaction.

• Balancing Aesthetics and Conversion: Consistently creating visually appealing designs that also adhere to strict conversion optimization goals.

• Rapid Iteration: Adapting to frequent feedback and business priority shifts in a fast-paced e-commerce environment.

• Global Reach, Localized Needs: Designing for a diverse customer base while maintaining brand consistency.

Learning & Development Opportunities:

• Specialized E-commerce Design Training: Access to resources to deepen knowledge in conversion rate optimization (CRO), A/B testing strategies, and e-commerce UX best practices.

• Industry Conferences & Webinars: Opportunities to attend events focused on digital design, e-commerce, and marketing technology.

• Mentorship: Potential to learn from experienced team members in marketing, e-commerce, and leadership roles.

• Exposure to New Markets: Understanding design considerations for different international markets as the company expands.

📝 Enhancement Note: The primary challenge lies in navigating remote collaboration and rapid iteration while consistently delivering high-impact, conversion-focused designs. Growth opportunities are geared towards specialization in e-commerce design.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you used UX principles to significantly improve conversion rates on an e-commerce product page." (Prepare a specific case study with metrics.)

• "How do you approach balancing visual aesthetics with conversion optimization goals in your designs?" (Focus on your process and trade-offs.)

• "Walk us through your process for designing a new campaign creative. How do you ensure it aligns with business objectives and drives action?" (Detail your workflow from brief to final asset.) Company & Culture Questions:

• "What interests you about Happy Mammoth's mission and our focus on gut health and wellness?" (Research the company's products and values.)

• "How do you typically collaborate with marketing and development teams in a remote setting?" (Highlight your communication and collaboration strategies.)

• "How do you stay updated on the latest trends in e-commerce design and conversion optimization?" (Discuss your continuous learning habits.) Portfolio Presentation Strategy:

• Structure: Organize your presentation by project, starting with the business problem/goal, your role and process, key design decisions, and finally, the results/impact.

• Quantify Everything: For each project, clearly state the metrics achieved (e.g., conversion lift, AOV increase, engagement metrics) and how your design contributed to them.

• Showcase Figma Skills: Be ready to demonstrate interactive prototypes or specific Figma features you utilized.

• Focus on DTC/E-commerce: Emphasize projects directly related to online sales, customer journeys, and conversion funnels.

• Be Concise and Clear: Practice your delivery to ensure you convey your message effectively within the allotted time.

📝 Enhancement Note: Prepare to discuss your portfolio projects in detail, focusing on quantifiable results and demonstrating a deep understanding of the e-commerce conversion funnel and DTC customer psychology.

📌 Application Steps

To apply for this UX/UI Designer position:

• Submit your CV and portfolio through the provided application link.

• Portfolio Customization: Ensure your portfolio prominently features e-commerce and DTC projects. Highlight quantifiable results (e.g., conversion rate improvements) and clearly define your role in each project. Tailor your presentation to showcase Figma proficiency and your understanding of conversion optimization principles.

• Resume Optimization: Clearly articulate your 2+ years of e-commerce/DTC design experience. Use keywords from the job description such as "UX/UI Design," "Figma," "Conversion Optimization," "DTC," and "E-commerce." Quantify achievements on your resume where possible.

• Interview Preparation: Practice presenting your portfolio, focusing on your design process, problem-solving skills, and the business impact of your work. Prepare specific examples for strategy and behavioral questions.

• Company Research: Familiarize yourself with Happy Mammoth's products, mission, and target audience. Understand their current website and marketing efforts to better tailor your responses and demonstrate genuine interest.

⚠️ 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.