Designer — UI

📍 Job Overview

Job Title: Designer — UI

Company: Selection Book

Location: Mexico City, Mexico

Job Type: Full-Time

Category: Product Design / UI Design

Date Posted: 2026-04-27

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

Remote Status: Hybrid

🚀 Role Summary

• Design intuitive and visually cohesive user interfaces (UI) for web and mobile applications, focusing on user-centricity and business objectives.

• Develop and maintain a robust design system, including a library of reusable components and visual tokens, to ensure consistency across the product.

• Collaborate closely with Product Managers, UX Researchers, and Engineering teams to define product requirements, prioritize features, and ensure seamless implementation.

• Conduct user research, usability testing, and data analysis to gather insights and inform design iterations, driving continuous product improvement.

• Champion accessibility standards (WCAG) and responsive design principles to create inclusive and adaptable user experiences.

📝 Enhancement Note: This role is critical for a growing startup, demanding adaptability and a proactive approach. The focus on a design system and data-driven iteration suggests a mature product development process. The hybrid work model requires strong self-management and communication skills.

📈 Primary Responsibilities

• Design visually appealing and user-friendly interfaces for digital products, ensuring alignment with user needs and business goals.

• Create and manage a comprehensive design system, including a component library, visual design tokens, and usage guidelines.

• Partner with Product Managers to translate product strategy and user requirements into effective UI designs and interaction flows.

• Engage with UX Researchers to plan and execute usability testing, analyze feedback, and identify areas for design optimization.

• Work closely with Frontend Engineers to provide clear specifications, assets, and support for accurate implementation of UI designs.

• Utilize product metrics (e.g., engagement, conversion rates, task completion time) to evaluate the effectiveness of UI changes and propose data-informed improvements.

• Ensure all designs adhere to accessibility best practices (WCAG) and responsive design principles for optimal cross-device performance.

• Contribute to product roadmap discussions, providing design expertise and estimating design effort for new features and initiatives.

• Mentor junior designers, fostering a collaborative environment and promoting best practices within the design team.

• Participate in cross-functional team meetings, contributing design perspectives to product planning and problem-solving sessions.

📝 Enhancement Note: The responsibilities highlight a blend of pure UI design, system design, user research oversight, and cross-functional collaboration. The emphasis on measuring impact through data and participating in product planning indicates a strategic role, not just execution-focused.

🎓 Skills & Qualifications

Education: Bachelor's degree in Design, Interaction Design, Visual Communication, Multimedia, or a related field, or equivalent demonstrable experience in UI design roles.

Experience: Minimum of 3 years of experience in digital interface design for web and/or mobile applications, supported by a strong portfolio showcasing final projects and design processes.

Required Skills:

• Proficiency in leading design and prototyping tools such as Figma, Sketch, or Adobe XD.

• Deep understanding of design system principles, component libraries, and visual token management.

• Solid grasp of usability principles, accessibility standards (WCAG), and responsive design techniques.

• Experience in creating reusable UI components and documenting design patterns for product and engineering teams.

• Ability to interpret technical specifications and collaborate effectively with frontend developers; basic knowledge of HTML/CSS is a plus.

• Experience conducting qualitative and quantitative user research, including usability testing and analysis of product metrics.

• Strong communication skills for articulating design decisions and presenting proposals to diverse stakeholders.

• Demonstrated ability to work autonomously, prioritize tasks, and adapt to dynamic environments with frequent changes and ambiguity.

Preferred Skills:

• Experience working in a startup environment with rapid iteration cycles.

• Familiarity with agile development methodologies.

• Basic understanding of frontend development principles beyond HTML/CSS.

• Experience in mentoring or leading junior design team members.

• Proven ability to influence product strategy through design insights.

📝 Enhancement Note: The requirement for a portfolio is paramount. The inclusion of "gender-neutral design" and "respect for plurality" points to a company culture that values inclusivity and thoughtful design considerations beyond pure aesthetics. Basic HTML/CSS and mentoring experience are valuable differentiators.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase at least 2-3 significant UI design projects for web or mobile applications, detailing the problem, your role, the design process, and the final outcome.

• Clearly articulate the challenges faced and how you approached them, demonstrating problem-solving skills.

• Include examples of your work with design systems, component libraries, or style guides.

• Demonstrate proficiency in your chosen design tools (Figma, Sketch, Adobe XD) through the complexity and polish of your presented work.

Process Documentation:

• Clearly outline the design process followed for each project, from discovery and ideation through to high-fidelity design and handoff.

• Highlight your contribution to user research, including any qualitative or quantitative methods used.

• Detail how you collaborated with Product Managers and Engineers, emphasizing communication and handoff strategies.

• Show how you measured the impact of your designs using product metrics and explain any subsequent iterations.

• Document how you applied accessibility and responsive design principles in your work.

📝 Enhancement Note: The portfolio is the primary tool for evaluating candidates. It needs to demonstrate not just visual design skills but also a structured, user-centered design process, collaboration capabilities, and an understanding of how design impacts business metrics. The emphasis on process documentation within the portfolio is crucial for this role.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for a Mid-Level UI Designer in Mexico City with 3-5 years of experience, a competitive annual salary range of MXN $400,000 - $700,000 is estimated. This range can vary based on the candidate's specific experience, skill set, and the company's compensation philosophy.

Benefits:

• Competitive compensation package.

• Opportunities for professional development and career growth within a startup environment.

• Flexible working hours to support work-life balance.

• Hybrid work model offering a blend of remote and in-office collaboration.

• Potential for learning and mentorship from experienced team members.

• Contribution to a company culture that values diversity, equity, and inclusion.

Working Hours: Full-time position, typically around 40 hours per week, with flexible scheduling. Occasional availability for key meetings or activities outside standard hours may be required.

📝 Enhancement Note: The salary estimate is based on general market data for mid-level design roles in major Mexican cities. The benefits listed are inferred from the job description's mention of "competitive package" and "development opportunities" and common startup offerings. The hybrid model implies a need for effective asynchronous communication.

🎯 Team & Company Context

🏢 Company Culture

Industry: The company operates within the technology sector, likely a growing startup focused on product development, indicated by the need for UI design and system implementation. The mention of "startup in growth stage" suggests an environment characterized by innovation, rapid iteration, and a focus on scaling.

Company Size: As a startup in a growth stage, the company is likely to be of medium size, perhaps between 50-200 employees, fostering a close-knit team environment where individual contributions are highly visible.

Founded: The specific founding date is not provided, but the description implies a company that has moved past the initial seed stage and is now focused on scaling its product and operations.

Team Structure:

• The UI Designer will be part of a Product team, working closely with Product Managers and UX Researchers.

• Collaboration with Engineering teams is a key aspect, suggesting a matrixed or highly integrated structure.

Methodology:

• Data-driven decision-making is a core methodology, utilizing product metrics and user feedback for continuous improvement.

• Agile or iterative development practices are likely employed, requiring adaptability and quick turnarounds.

• Emphasis on user-centered design principles ensures that user needs are at the forefront of product development.

Company Website: https://selectionbook.com.mx/

📝 Enhancement Note: The culture is likely fast-paced, collaborative, and innovation-driven, typical of a growing tech startup. The emphasis on data and user feedback suggests a pragmatic approach to product development. The hybrid model indicates a trust-based work environment.

📈 Career & Growth Analysis

Operations Career Level: This role represents a mid-level position within the Product Design function. The responsibilities extend beyond pure UI execution to include contributing to design systems, participating in product strategy, and potentially mentoring others. This signifies a move towards a more senior or specialized designer role.

Reporting Structure: The UI Designer will likely report to a Head of Product, Design Lead, or a Senior Product Manager. Close collaboration with Product Managers and Engineers is expected, forming a core product development pod.

Operations Impact: The UI Designer's work directly impacts user acquisition, engagement, retention, and conversion rates by creating intuitive and effective user experiences. Their contributions are crucial for the product's market adoption and overall success, directly influencing revenue potential and growth.

Growth Opportunities:

• Specialization: Deepen expertise in UI design, design systems, or user research.

• Leadership: Progress to a Senior UI Designer or Design Lead role, taking on more strategic responsibilities and mentoring opportunities.

• Cross-functional Expertise: Develop a stronger understanding of product management and engineering processes, potentially transitioning into a Product Owner or Product Manager role in the long term.

• Skill Expansion: Gain experience in areas like UX strategy, accessibility auditing, or even basic frontend development.

📝 Enhancement Note: The growth path for a UI Designer in a startup like this can be rapid. The emphasis on design systems and data-driven iteration suggests opportunities to become a subject matter expert in these areas, which are highly valued in the tech industry.

🌐 Work Environment

Office Type: The company offers a hybrid work model, indicating a blend of remote work and in-office collaboration. This suggests a modern workspace designed to facilitate both focused individual work and dynamic team interaction.

Office Location(s): The primary office is located in Mexico City. Specific details about the office facilities, such as collaborative spaces, private work areas, and amenities, are not provided but are typical for a company embracing a hybrid model.

Workspace Context:

• A collaborative environment is fostered, encouraging designers to interact with Product Managers, UX Researchers, and Engineers.

• Access to industry-standard design and prototyping tools (Figma, Sketch, Adobe XD) will be provided.

• Opportunities for knowledge sharing and brainstorming sessions are likely integrated into the workflow.

Work Schedule: A flexible work schedule is offered within a full-time capacity. This allows designers to manage their time effectively, balancing core working hours with personal needs, while ensuring availability for critical team meetings and project deadlines.

📝 Enhancement Note: The hybrid model requires excellent communication and self-discipline. The company likely invests in tools and spaces that support effective collaboration regardless of physical location.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your resume and portfolio to assess suitability for the role and its requirements.

• Portfolio Presentation: A dedicated session where you present your portfolio, detailing your process, design decisions, and impact for 1-2 key projects. Be prepared to discuss your role, challenges, and outcomes.

• Skills & Collaboration Interview: This may involve a discussion about your experience with design systems, accessibility, usability testing, and how you collaborate with PMs and Engineers. A practical design exercise or case study might be presented.

• Team/Culture Fit Interview: An opportunity to meet potential team members and assess alignment with the company's values and work style. Questions about adaptability, problem-solving in ambiguous situations, and your approach to feedback are common.

• Final Interview: Potentially with a senior leader to discuss overall fit and career aspirations.

Portfolio Review Tips:

• Curate Strategically: Select projects that best showcase your UI design skills, system thinking, user-centric approach, and impact. Prioritize quality over quantity.

• Tell a Story: For each project, clearly articulate the problem statement, your role and responsibilities, the design process, key decisions made, and measurable outcomes. Use visuals effectively.

• Highlight Process: Detail your research, ideation, prototyping, testing, and collaboration phases. Explain why you made certain design choices.

• Demonstrate System Thinking: If possible, include examples of how you've contributed to or utilized design systems, component libraries, or style guides.

• Quantify Impact: Whenever possible, use data and metrics to demonstrate the success of your designs (e.g., improved conversion rates, reduced task completion time, increased user satisfaction).

• Be Ready for Questions: Anticipate questions about your design philosophy, how you handle feedback, your experience with specific tools, and how you approach ambiguous problems.

Challenge Preparation:

• Understand the Context: If a design challenge is given, ensure you understand the problem domain and business objectives.

• Focus on Process: Even if time is limited, emphasize your thought process, how you'd approach research, and potential solutions rather than aiming for a fully polished final design.

• Communicate Your Thinking: Verbalize your assumptions, rationale, and decision-making process clearly during the exercise or presentation.

• Consider Constraints: Be mindful of potential technical, business, or time constraints.

📝 Enhancement Note: The interview process will heavily rely on the portfolio. Candidates should prepare to not only show their work but also to articulate the strategic thinking and problem-solving behind it. The emphasis on collaboration and data-driven iteration means interviewers will probe how candidates work within a team and use metrics.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma, Sketch, Adobe XD (Proficiency in at least one is essential).

• Design Systems: Experience with creating and maintaining component libraries, style guides, and design tokens.

• Collaboration Tools: Likely Jira, Confluence, Slack, or similar platforms for team communication and project management.

Analytics & Reporting:

• Familiarity with product analytics tools (e.g., Google Analytics, Mixpanel, Amplitude) to track user behavior and measure design impact.

CRM & Automation:

• While not a primary focus, a basic understanding of CRM systems (like Salesforce or HubSpot) and how UI design impacts user workflows within them could be beneficial.

• Experience with user feedback platforms or survey tools.

📝 Enhancement Note: Proficiency in Figma is highly sought after in the industry, so highlighting experience with it is advantageous. The ability to interpret data from analytics tools is key for a data-driven design role.

👥 Team Culture & Values

Operations Values:

• User-Centricity: A deep commitment to understanding and solving user problems through thoughtful design.

• Data-Driven Innovation: Using insights from data and user feedback to guide product evolution and design decisions.

• Collaboration & Transparency: Working closely with cross-functional teams and maintaining open communication.

• Continuous Improvement: A dedication to refining both the product and the design process through iteration and learning.

• Inclusivity: Designing for a diverse user base and fostering an equitable and respectful work environment.

Collaboration Style:

• Cross-functional Integration: Designers are expected to work seamlessly with Product Managers to define strategy and Engineers to ensure successful implementation.

• Feedback-Driven: An open culture for giving and receiving constructive feedback on designs and processes.

• Proactive Communication: Regularly sharing progress, insights, and potential roadblocks with relevant stakeholders.

📝 Enhancement Note: The values emphasize a modern, agile, and user-focused approach to product development, common in successful tech startups. The focus on collaboration and continuous improvement suggests a dynamic and learning-oriented team environment.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing Ambiguity and Speed: As a startup, priorities can shift quickly, requiring designers to adapt rapidly while maintaining high-quality output.

• Scaling Design Systems: Ensuring the design system remains robust and scalable as the product and team grow presents ongoing challenges.

• Data Interpretation: Effectively translating raw product metrics into actionable design insights can be complex.

• Cross-functional Alignment: Maintaining alignment on design vision and priorities across multiple departments (Product, Engineering, Marketing) requires strong communication and negotiation skills.

Learning & Development Opportunities:

• Design System Expertise: Become a go-to expert for design systems, contributing to best practices and potentially leading their evolution.

• Product Strategy Involvement: Gain deeper exposure to product strategy and roadmap planning, influencing the direction of the product.

• Mentorship: Opportunity to mentor junior designers, developing leadership and coaching skills.

• Industry Trends: Stay abreast of the latest UI design trends, tools, and accessibility standards through continuous learning.

📝 Enhancement Note: The challenges are typical of a growth-stage startup, offering significant learning opportunities. The company's focus on development suggests a commitment to helping employees grow their careers.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you had to design for ambiguity. How did you approach it, and what was the outcome?" (Focus on your process, research, and how you managed uncertainty.)

• "How do you ensure your designs are accessible and inclusive? Can you give examples from your portfolio?" (Highlight specific WCAG guidelines or inclusive design principles you've applied.)

• "Walk me through a complex UI challenge you solved. What was the problem, your solution, and the impact?" (Prepare a detailed case study from your portfolio.)

Company & Culture Questions:

• "What interests you about working at Selection Book, and specifically in a startup environment?" (Research the company's mission and recent news.)

• "How do you handle receiving critical feedback on your designs?" (Showcase a growth mindset and openness to iteration.)

• "Describe your ideal work environment and how you thrive in a hybrid setting." (Align your response with the company's stated work model.)

Portfolio Presentation Strategy:

• Structure: Begin with an overview of your most impactful projects. For each, a clear problem statement, your role, key design decisions, the process, and quantifiable results.

• Narrative: Tell a compelling story for each project, highlighting your problem-solving skills and user-centric approach.

• Visuals: Use high-quality mockups, wireframes, prototypes, and user flow diagrams. Keep text concise and impactful.

• Interaction: Be prepared to answer in-depth questions about your design choices, trade-offs, and how you measured success. Engage with the interviewer by asking clarifying questions.

• Focus on Impact: Clearly articulate the business value and user benefits derived from your design work.

📝 Enhancement Note: Interview preparation should focus on demonstrating a structured design process, strong collaboration skills, and a data-informed approach. Be ready to showcase how your work has directly contributed to product success.

📌 Application Steps

To apply for this UI Designer position:

• Submit your application through the provided link on the Selection Book Teamtailor portal.

• Portfolio Customization: Tailor your portfolio to highlight projects that demonstrate experience with design systems, UI design for web/mobile, user research, and data-driven iteration. Select 2-3 strong case studies that best align with the job description's requirements.

• Resume Optimization: Ensure your resume clearly outlines your years of experience, proficiency in key design tools (Figma, Sketch, Adobe XD), and specific achievements related to UI design, usability, and accessibility. Use keywords from the job description.

• Interview Preparation: Practice presenting your portfolio, focusing on articulating your design process, decision-making rationale, and the impact of your work. Prepare answers to common behavioral and situational questions related to collaboration, problem-solving, and working in a startup environment.

• Company Research: Thoroughly research Selection Book's mission, product, and any recent news. Understand their target audience and market position to 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.

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