UX/UI Designer

📍 Job Overview

Job Title: UX/UI Designer

Company: Happy Koala LLC

Location: Lisboa, Portugal

Job Type: FULL_TIME

Category: E-commerce Design / Digital Product Design

Date Posted: 2026-09-09

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

Remote Status: Fully Remote

🚀 Role Summary

• Focus on designing and optimizing the user interface (UI) and user experience (UX) for a direct-to-consumer (DTC) e-commerce storefront, with a strong emphasis on conversion optimization and visual design.

• Develop visually compelling and intuitive product pages, campaign creatives, and website elements that drive user engagement and sales.

• Collaborate closely with the e-commerce team to ensure a cohesive and frictionless user journey across all digital touchpoints.

• Leverage a robust understanding of UX principles and conversion-focused design to translate business objectives into impactful digital solutions.

• Maintain a high standard of visual quality and brand consistency across all digital assets, ensuring responsive design for both desktop and mobile platforms.

📝 Enhancement Note: This role is specifically embedded within the e-commerce team, focusing on the DTC storefront, not general product or brand design. The ideal candidate will possess a strong UI craft with a solid UX foundation, capable of delivering high-quality designs that balance aesthetics with tangible business impact, particularly in a B2C/e-commerce context.

📈 Primary Responsibilities

• Design and iteratively improve product pages to enhance visual appeal, clarity, and ease of navigation, directly impacting conversion rates.

• Create engaging campaign creatives that effectively communicate brand messaging and drive desired user actions, such as purchases or sign-ups.

• Redesign and optimize existing website sections, proactively identifying opportunities to elevate the user experience, boost engagement metrics, and increase conversion rates.

• Transform initial briefs, concepts, and campaign ideas into polished, high-fidelity designs that align with brand guidelines and business objectives.

• Strategically apply UX knowledge to determine optimal placement of critical elements like key information, calls-to-action (CTAs), trust signals, and benefit highlights to influence user decision-making.

• Meticulously consider the end-to-end user journey during the design of new pages, ensuring a natural, intuitive, and friction-free flow.

• Uphold and refine visual design consistency across the website and various campaign experiences, reinforcing brand identity.

• Demonstrate agility in adapting and enhancing designs based on performance feedback, A/B testing results, and evolving business priorities.

• Ensure all designs are fully responsive, delivering an optimal user experience across a range of desktop and mobile devices.

📝 Enhancement Note: The responsibilities highlight a strong emphasis on conversion-focused design within an e-commerce context. This implies a need for a designer who understands not just aesthetics but also the psychology of online purchasing and how design choices directly influence key performance indicators (KPIs) like conversion rate, average order value (AOV), and customer lifetime value (CLV).

🎓 Skills & Qualifications

Education: While no specific degree is mandated, a Bachelor's degree in Graphic Design, Human-Computer Interaction, Digital Media, or a related field is often preferred for foundational understanding. Equivalent practical experience will be strongly considered.

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 supplement industry is considered a significant advantage.

Required Skills:

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

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

• Strong UI design capabilities with exceptional attention to detail and a commitment to high visual quality standards.

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

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

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

• Experience designing responsive websites that perform seamlessly across both desktop and mobile devices.

• 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 high-fidelity design. Preferred Skills:

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

• Familiarity with A/B testing methodologies and incorporating test results into design iterations.

• Basic understanding of front-end development principles (HTML/CSS) to better inform design feasibility.

• Experience with user research techniques and usability testing.

• Knowledge of analytics tools (e.g., Google Analytics) to understand user behavior patterns.

📝 Enhancement Note: The explicit requirement for 2+ years of e-commerce/DTC design experience is critical. Candidates should be prepared to showcase a portfolio that clearly demonstrates this specific expertise, highlighting projects where their design directly contributed to business outcomes like increased sales or improved conversion rates on online platforms.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A comprehensive portfolio is mandatory, showcasing a minimum of 2 years of experience in UX/UI design for e-commerce or DTC brands.

• Projects should demonstrate a clear understanding of conversion-driven design principles and their application in real-world scenarios.

• Include case studies detailing the design process, from initial brief and user research to final UI implementation and outcome.

• Highlight your proficiency with Figma, including examples of interactive prototypes and design system elements if applicable.

• Showcase designs for both desktop and mobile interfaces, emphasizing responsive design strategies.

• Projects should illustrate your ability to translate business goals into effective design solutions that improve user experience and drive business metrics. Process Documentation:

• Demonstrate a systematic approach to design problem-solving, including user research, ideation, wireframing, prototyping, and high-fidelity design.

• Clearly articulate how you incorporate user feedback and business requirements into your design process.

• Provide examples of how you have used UX principles to improve user flows, reduce friction, and enhance conversion rates.

• Explain your workflow for ensuring design consistency and maintaining visual brand identity across various digital touchpoints.

📝 Enhancement Note: The portfolio is the most crucial element for this role. Candidates must curate their submissions to specifically highlight e-commerce and DTC projects, detailing the challenges, their design approach, the tools used (especially Figma), and the measurable impact of their work on key business metrics like conversion rate, average order value, or customer engagement.

💵 Compensation & Benefits

Salary Range: For a Mid-Level UX/UI Designer with 2-5 years of experience in Lisbon, Portugal, the estimated annual gross salary typically ranges from €30,000 to €45,000. This estimate is based on industry benchmarks for similar roles in the Portuguese market, considering the cost of living and demand for specialized digital design skills in the e-commerce sector.

Benefits:

• Strong Salary Package: Competitive remuneration reflecting the candidate's skills and contributions.

• Paid Holidays: Generous paid time off to ensure work-life balance and employee well-being.

• Work from Anywhere: Fully remote position offering flexibility to work from any location.

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

• Flexible Working Hours: Ability to manage work schedule to best suit personal productivity and lifestyle.

• Opportunities for Growth: Access to free books, courses, and professional development resources to foster skill enhancement and career advancement.

• Dynamic Work Environment: Engaging and fast-paced workplace with daily opportunities for new challenges and excitement.

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

Working Hours: 40 hours per week, with flexible working hours. Candidates must be available during EU hours (GMT) for collaboration and meetings.

📝 Enhancement Note: The salary range provided is an estimate for Lisbon, Portugal, and may vary based on the candidate's specific experience, skill set, and negotiation. The "Work from Anywhere" benefit is qualified by the requirement to be available during EU hours, suggesting a need for timezone alignment for core working periods.

🎯 Team & Company Context

🏢 Company Culture

Industry: Food Tech / Health & Wellness / E-commerce. Happy Koala LLC (operating as Happy Mammoth) is a rapidly growing company focused on gut health, digestive aids, and microbiome-focused supplements, leveraging a direct-to-consumer (DTC) e-commerce model. Their market position is within the thriving wellness and natural health sector.

Company Size: While specific numbers aren't provided in the raw data, the description implies a growing international presence with teams in the US, Australia, and Europe, suggesting a medium-sized, scaling organization. This size often allows for both impactful individual contributions and the development of structured processes.

Founded: The company was founded with a mission to empower clients towards lasting health transformations and vibrant living, focusing on science-backed gut health solutions. The founding ethos drives innovation and a commitment to customer well-being.

Team Structure:

• The UX/UI Designer will be embedded within the e-commerce team, indicating a collaborative structure focused on online sales and customer acquisition/retention.

• Reporting likely goes to an E-commerce Manager, Head of Digital, or Marketing Lead, with close collaboration across marketing, content, and potentially product development teams.

• Cross-functional collaboration is key, especially with marketing teams for campaign creatives and content creators for product page assets. Methodology:

• Data-Driven Design: Emphasis on using analytics and conversion principles to inform design decisions and measure impact.

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

• Customer-Centricity: A core value focused on helping clients improve their health, which translates to designing user experiences that are intuitive, supportive, and effective.

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

📝 Enhancement Note: The company's focus on health and wellness, combined with a DTC e-commerce model, means the UX/UI designer will be instrumental in communicating complex health benefits visually and making the purchasing process seamless for a health-conscious consumer base.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a Mid-Level UX/UI Designer, requiring 2-5 years of experience. It's a specialized position focused on the digital storefront, offering the opportunity to significantly impact revenue through design.

Reporting Structure: The designer will likely report into a team lead or manager within the e-commerce or marketing department, working closely with cross-functional teams to execute digital strategies.

Operations Impact: The designer's work directly influences customer acquisition, conversion rates, average order value, and overall customer experience on the e-commerce platform. Their contributions are measurable and directly tied to business revenue and growth.

Growth Opportunities:

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

• Leadership Potential: Opportunities to lead design initiatives for specific product launches, campaigns, or website features as experience grows.

• Learning & Development: Access to provided resources like free books and courses allows for continuous skill enhancement in design, UX, and e-commerce best practices.

• Broader Exposure: Potential to contribute to other digital design aspects of the company as the organization scales.

📝 Enhancement Note: The emphasis on "Opportunities for Growth" with free books and courses suggests a company culture that values continuous learning and professional development, particularly relevant for a rapidly evolving field like UX/UI design in e-commerce.

🌐 Work Environment

Office Type: Fully remote. The role offers the flexibility to work from anywhere, with the primary constraint being availability during EU working hours (GMT).

Office Location(s): While the company has a presence in the US, Australia, and Europe, this specific role is remote and not tied to a physical office location, beyond the need for EU timezone availability. The company headquarters are not explicitly stated, but the derived location is Lisbon, Portugal.

Workspace Context:

• Autonomy & Flexibility: A high degree of autonomy is expected, with flexible working hours allowing individuals to structure their day for optimal productivity.

• Digital Collaboration Tools: The environment will rely heavily on digital collaboration tools (e.g., Slack, Zoom, Figma) for communication, project management, and design reviews.

• International Team Interaction: Opportunities to collaborate with a global team, fostering diverse perspectives and cross-cultural communication skills.

Work Schedule: Full-time, with flexible working hours. Core availability during EU (GMT) hours is required for team synchronization and meetings. This means the candidate should be prepared to align their working day with European time zones.

📝 Enhancement Note: The "Work from Anywhere" benefit is a significant draw, but the "EU hours (GMT)" requirement is a crucial qualifier. Candidates must ensure their preferred working location and schedule align with this timezone constraint for effective collaboration.

📄 Application & Portfolio Review Process

Interview Process:

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

• Design Challenge/Portfolio Review: A practical exercise or in-depth discussion of portfolio projects. Candidates will be expected to articulate their design process, rationale, and the impact of their work on business goals. Focus will be on UI craft, UX thinking, and conversion optimization.

• Team/Hiring Manager Interview: Discussion about team fit, work style, problem-solving approach, and understanding of Happy Mammoth's mission and market.

• Final Interview: Potentially with a senior leader to discuss overall fit and long-term potential.

Portfolio Review Tips:

• Curate for Relevance: Prioritize e-commerce and DTC projects. Clearly label and describe each project, highlighting your specific role and contributions.

• Showcase Process: For each project, detail your design thinking: problem identification, research methods, user flows, wireframes, UI mockups, prototypes, and iteration based on feedback or testing.

• Quantify Impact: Whenever possible, include metrics demonstrating the success of your designs (e.g., % increase in conversion rate, % reduction in bounce rate, improvement in task completion time).

• Figma Proficiency: Ensure your portfolio demonstrates strong Figma skills, including interactive prototypes and potentially examples of design systems.

• Visual Polish: Ensure your portfolio itself is visually appealing, well-organized, and error-free, reflecting your high standards for UI design.

Challenge Preparation:

• Anticipate E-commerce Scenarios: Prepare for challenges involving optimizing product pages, checkout flows, promotional banners, or landing pages for conversion.

• Focus on Conversion Principles: Be ready to discuss how specific design elements (e.g., CTAs, imagery, copy placement, trust signals) influence user behavior and purchasing decisions.

• Articulate Trade-offs: Understand that design often involves balancing competing priorities (e.g., aesthetics vs. functionality, user needs vs. business goals). Be prepared to discuss these trade-offs.

• Demonstrate Adaptability: Show your ability to take feedback constructively and iterate on designs.

📝 Enhancement Note: The interview process will heavily weigh the portfolio. Candidates should prepare a narrative for each project that clearly links their design decisions to business outcomes, demonstrating an understanding of the e-commerce funnel and conversion optimization strategies.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: Essential for UI design, prototyping, and collaboration. Proficiency is a core requirement.

• Design Software: Familiarity with other industry-standard design tools may be beneficial but Figma is paramount.

Analytics & Reporting:

• Web Analytics Tools: Understanding how to interpret data from tools like Google Analytics to inform design decisions and measure impact is crucial.

• A/B Testing Platforms: Familiarity with platforms used for A/B testing website elements to optimize conversion rates.

CRM & Automation:

• E-commerce Platforms: Experience with common e-commerce platforms (e.g., Shopify, WooCommerce) and their design limitations/capabilities is advantageous.

• Project Management Tools: Familiarity with tools like Asana, Trello, or Jira for managing design tasks and workflows.

📝 Enhancement Note: While Figma is the explicitly required tool, a candidate's understanding of how their designs integrate with e-commerce platforms and how to leverage analytics to prove ROI will be highly valued.

👥 Team Culture & Values

Operations Values:

• Customer Health & Transformation: A fundamental value driving the company's mission to improve client well-being, which should translate into user-centric design decisions.

• Innovation & Creativity: Encouraging unbound creativity and a dynamic work environment where new challenges are embraced.

• Teamwork & Collaboration: Fostering a positive team spirit where collaboration is key to success, with a global and friendly crew.

• Excellence & Impact: A drive to deliver high-quality work that makes a real difference, both in customer lives and business outcomes.

• Efficiency & Agility: Operating in a fast-paced environment requires adaptability and the ability to execute quickly.

Collaboration Style:

• Cross-functional Integration: Close collaboration with the e-commerce team, marketing, and potentially content creators to ensure cohesive campaigns and website experiences.

• Remote-First Communication: Reliance on digital tools for seamless communication, feedback exchange, and project updates across different time zones.

• Open Feedback Culture: Implied by the "dynamic work environment" and focus on growth, suggesting a culture where feedback is valued for continuous improvement.

📝 Enhancement Note: The company values align with a proactive, results-oriented designer who can work effectively in a remote, international setting, contributing to a mission-driven organization focused on health and e-commerce success.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing UI Polish with Conversion Goals: Effectively integrating high-fidelity UI design with conversion-optimization strategies without compromising user experience or aesthetic appeal.

• Rapid Iteration in a Fast-Paced Environment: Adapting quickly to new briefs, feedback, and business priorities in a scaling e-commerce company.

• Maintaining Brand Consistency Across Diverse Campaigns: Ensuring a unified brand voice and visual identity across various digital touchpoints and marketing initiatives.

• Designing for a Niche Market: Understanding and catering to the specific needs and preferences of health-conscious consumers in the wellness and supplement industry.

Learning & Development Opportunities:

• E-commerce UX Specialization: Opportunities to become a subject matter expert in designing for online retail and DTC brands.

• Conversion Rate Optimization (CRO) Expertise: Developing advanced skills in CRO through practical application and company-provided learning resources.

• Cross-Cultural Design Collaboration: Enhancing skills in working with international teams and understanding diverse user perspectives.

• Exposure to Health Tech: Gaining insights into the unique design challenges and opportunities within the health and wellness technology sector.

📝 Enhancement Note: The company's commitment to providing "free books, courses, and all the resources you need to level up your skills" directly addresses the challenge of staying current in the rapidly evolving field of UX/UI design and e-commerce.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you significantly improved conversion rates on an e-commerce product page through your design. What was your process, and what were the results?" (Focus on process, metrics, and impact)

• "How do you balance a visually stunning UI with the functional requirements of a conversion-optimized e-commerce experience?" (Focus on trade-offs and strategic thinking)

• "Walk us through your approach to designing a new campaign landing page from brief to final asset. What key UX and UI considerations would you prioritize?" (Focus on process, user journey, and conversion elements) Company & Culture Questions:

• "What interests you about Happy Mammoth's mission to improve health and well-being?" (Showcase alignment with company values)

• "How do you approach collaboration within a remote, international team, especially when working with marketing and e-commerce stakeholders?" (Highlight communication and teamwork skills)

• "How do you stay updated on the latest trends in UX/UI design, particularly within the e-commerce and wellness sectors?" (Demonstrate commitment to continuous learning) Portfolio Presentation Strategy:

• Tell a Story: For each project, frame it as a narrative: the problem, your role, your process, the solution, and the measurable outcome.

• Highlight Key Decisions: Clearly explain why you made certain design choices, linking them back to UX principles, conversion goals, or business objectives.

• Demonstrate Figma Proficiency: Be ready to walk through interactive prototypes and explain your use of components, auto layout, or design systems within Figma.

• Quantify Impact: Use specific numbers and data points to showcase the success of your designs. If exact numbers aren't available, use estimations or qualitative outcomes clearly.

• Address Constraints: Be prepared to discuss any limitations or challenges faced during the project and how you navigated them.

📝 Enhancement Note: Candidates should prepare to discuss specific e-commerce and DTC projects in detail, demonstrating their understanding of conversion funnels, user psychology in online shopping, and their ability to translate business needs into effective, visually appealing digital experiences using Figma.

📌 Application Steps

To apply for this UX/UI Designer position:

• Submit your application through the provided link on the Happy Mammoth careers portal.

• Portfolio Customization: Ensure your portfolio prominently features at least two strong e-commerce or DTC design case studies, clearly detailing your process, role, and measurable impact. Tailor your portfolio presentation to highlight conversion optimization skills.

• Resume Optimization: Update your resume to emphasize relevant experience, specifically mentioning years of e-commerce/DTC design, proficiency in Figma, and any experience in health/wellness. Use keywords from the job description.

• Interview Preparation: Practice articulating your design process and project outcomes, focusing on how your UI/UX decisions drove business results (e.g., conversion increases). Prepare specific examples for strategy and behavioral questions.

• Company Research: Familiarize yourself with Happy Mammoth's products, brand messaging, and target audience. Understand their current website and identify potential areas for UX/UI improvement, demonstrating proactive thinking.

⚠️ 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.