Senior Product Experience Engineer (UX + Frontend, LeSS)

📍 Job Overview

Job Title: Senior Product Experience Engineer (UX + Frontend, LeSS)

Company: knowmad mood

Location: Madrid, Community of Madrid, Spain

Job Type: FULL_TIME

Category: Product Operations / UX & Frontend Engineering

Date Posted: April 21, 2026

Experience Level: 5-10 years

Remote Status: 100% Remote

🚀 Role Summary

• This role bridges the gap between User Experience (UX) design and Frontend Development, focusing on delivering exceptional product experiences.

• It requires acting as a principal UX reference, particularly in organizations with lower UX maturity, to build and scale design capabilities.

• The position involves close collaboration with Product Owners, engineering teams, and stakeholders to define product vision and ensure cohesive user journeys.

• A key aspect is working within scaled agile frameworks like LeSS (Large-Scale Scrum) to maintain experience consistency across multiple teams.

📝 Enhancement Note: The "LeSS" in the job title and description strongly indicates a need for experience in scaled agile methodologies, specifically Large-Scale Scrum. This role is not just about individual UX/Frontend contributions but also about influencing and enabling larger organizational structures to adopt and mature their UX practices.

📈 Primary Responsibilities

• Define and continuously evolve the end-to-end user experience of digital products, ensuring alignment with business objectives and technological capabilities.

• Design, develop, and implement robust frontend solutions that are technically sound, user-friendly, and visually coherent with the product's design system.

• Serve as the initial UX capability within the organization, actively building, mentoring, and scaling UX expertise across engineering and product teams.

• Establish and champion UX principles, patterns, and best practices to ensure consistency and a high-quality experience across all product touchpoints and teams.

• Collaborate deeply with Product Owners and engineering teams during the product definition and development lifecycle, providing UX insights and technical feasibility assessments.

• Actively coach and mentor development teams through pairing and other agile enablement techniques to elevate their understanding and application of UX principles.

• Ensure the overall coherence and quality of the product experience within a LeSS (Large-Scale Scrum) framework, facilitating communication and alignment among distributed teams.

• Contribute to the evolution of shared design systems and UI patterns, ensuring they are practical, scalable, and effectively utilized by development teams.

📝 Enhancement Note: The emphasis on "low maturity" UX environments and the responsibility to "build and scale" UX capabilities suggests this role will involve significant strategic initiative and process definition, not just execution. The candidate will likely be expected to create frameworks and training materials.

🎓 Skills & Qualifications

Education: Bachelor's degree in Computer Science, Human-Computer Interaction, Design, or a related field; or equivalent practical experience.

Experience: Minimum of 5 years of progressive experience in User Experience (UX) design and Product Experience within digital-first, user-centric environments. Proven track record of delivering complex interfaces in production through solid frontend development expertise.

Required Skills:

• Extensive experience in UX design, user research, and product strategy development for digital products.

• Proficient in frontend development (e.g., React, Angular, Vue.js) with a strong understanding of HTML, CSS, and JavaScript, capable of delivering production-ready code.

• Demonstrated ability to act as a lead UX resource, capable of establishing and maturing UX practices in organizations with nascent design functions.

• Experience working within scaled agile frameworks, specifically LeSS (Large-Scale Scrum) or similar methodologies.

• Proven ability to collaborate effectively with Product Owners, engineering teams, and diverse stakeholders to define product roadmaps and user journeys.

• Strong understanding and practical application of design systems, UI patterns, and component libraries.

• Excellent systemic thinking and problem-solving skills with a high degree of UX judgment.

• Ability to influence and enable teams without formal managerial authority, fostering a collaborative and empowered environment.

Preferred Skills:

• Prior experience in hybrid UX + Frontend engineering roles.

• Hands-on experience with product management in scaled agile environments.

• Experience in creating and delivering UX training programs or enablement sessions.

• Advanced certifications in UX design, frontend development, or agile methodologies.

📝 Enhancement Note: The "hybrid UX + Frontend" preference and the "5+ years" experience suggest a candidate who can not only design but also build and understand the technical constraints of frontend development. The emphasis on influencing without authority points to strong soft skills and leadership potential.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A comprehensive portfolio showcasing end-to-end product experience design projects, demonstrating your ability to translate user needs into functional and engaging digital interfaces.

• Case studies that highlight your contributions to defining and evolving UX strategies, including user research methodologies, wireframing, prototyping, and usability testing.

• Examples of complex frontend implementations, illustrating your capacity to deliver production-ready interfaces and integrate them with backend systems.

• Evidence of your experience in establishing or contributing to design systems, showcasing how you've defined and maintained reusable UI components and patterns.

Process Documentation:

• Demonstrate your ability to define and document UX principles, patterns, and best practices that ensure consistency across multiple teams in a scaled agile environment like LeSS.

• Provide examples of workflow designs and optimization strategies you've implemented to improve the product development process, especially concerning UX integration.

• Showcase your approach to system implementation, including how you've integrated UX requirements with frontend development and backend technologies.

• Illustrate how you measure and analyze the performance of product experiences, using data to drive iterative improvements and demonstrate ROI.

📝 Enhancement Note: Given the role's emphasis on building UX maturity and working within LeSS, the portfolio should ideally include examples of process documentation for UX enablement, design system guidelines, and cross-team collaboration frameworks. Demonstrating how you've scaled UX knowledge is crucial.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for Senior Product Experience Engineers in Madrid, Spain, with 5-10 years of experience, and considering the 100% remote nature, a competitive annual salary range is estimated between €55,000 - €75,000 gross. This range accounts for the hybrid UX/Frontend skill set, leadership expectations, and the cost of living in Spain.

Benefits:

• Contract: Indefinite contract, providing long-term job security.

• Work Arrangement: 100% Remote, offering flexibility and work-life balance.

• Professional Development: Access to internal training programs and certifications, supporting continuous learning and skill enhancement in UX, Frontend, and

Agile methodologies.

• Flexible Compensation Plan: Options for a flexible benefits package, including:

  • Health insurance
  • Transportation allowance
  • Childcare tickets
  • Restaurant tickets

• Referral Program: Earn rewards through the "Plan Amigo" by referring successful candidates.

• Company Culture & Events: Participation in company events, meetups, tech days, and talks, fostering networking and community.

Working Hours: The standard working hours are approximately 40 hours per week, typical for a full-time position. While the role is remote, adherence to core working hours for team collaboration and meetings within the European time zone (Europe/Madrid) is expected.

📝 Enhancement Note: The salary range is an estimate based on general market data for similar roles in Spain. Actual compensation will depend on the candidate's specific experience, skills, and interview performance. The benefits listed are comprehensive and aligned with typical offerings for tech roles in the region.

🎯 Team & Company Context

🏢 Company Culture

Industry: Digital Transformation, Technology Consulting, Software Development. knowmad mood operates at the intersection of technology and business strategy, focusing on driving innovation and sustainable growth for clients. This context means the operations team is integral to enabling client success through efficient processes and cutting-edge solutions.

Company Size: Over 3,000 employees. This large size suggests a structured organization with established processes, but also opportunities for impact within specific teams or projects. For operations professionals, it implies a need for scalability, robust system integration, and effective cross-functional collaboration.

Founded: The company's founding date is not explicitly stated, but its description as a "leading company in digital transformation" and its size suggest a mature organization with a significant market presence.

Team Structure:

• Operations Focus: The "Senior Product Experience Engineer" role implies integration within product development teams. These teams are likely structured using scaled agile methodologies (LeSS), meaning multiple cross-functional teams working on different aspects of a larger product.

• Reporting: While not explicitly stated, this senior role likely reports to a Product Manager, Head of Product, or a Lead UX/Engineering Manager. The emphasis on influencing without formal authority suggests a matrixed reporting structure or strong peer collaboration.

• Cross-functional Collaboration: Expect deep collaboration with Product Owners, other UX designers, frontend engineers, backend engineers, QA testers, and potentially business stakeholders who define product strategy and requirements.

Methodology:

• Agile & LeSS: The core methodology is scaled agile, specifically LeSS. This emphasizes iterative development, continuous feedback, and self-organizing teams.

• Data-Driven UX: The role's focus on product experience implies a data-driven approach, using analytics, user feedback, and A/B testing to inform design decisions and measure impact.

• Design Systems: A strong emphasis on design systems suggests a systematic approach to UI/UX consistency, component reusability, and efficient development workflows.

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

📝 Enhancement Note: knowmad mood's focus on digital transformation and sustainability means operations roles are critical for implementing innovative solutions. The large company size suggests a need for adaptable, scalable operational frameworks.

📈 Career & Growth Analysis

Operations Career Level: This is a Senior-level individual contributor role. It requires significant experience and the ability to lead and influence without direct authority. The role is positioned to be a subject matter expert in UX and Frontend, with a focus on scaling best practices and enabling other teams. It's a pivotal role for someone who wants to drive product experience excellence and contribute to organizational UX maturity.

Reporting Structure: The Senior Product Experience Engineer will likely report to a Product Lead, Engineering Manager, or a Head of Product. They will work closely with Product Owners and development teams, acting as a technical and UX thought leader within these cross-functional units.

Operations Impact: This role has a direct impact on the company's ability to deliver high-quality, user-centric digital products. By bridging UX and Frontend, the engineer ensures that user needs are met efficiently and effectively, contributing to customer satisfaction, product adoption, and ultimately, business success and revenue generation for clients. Their work in scaling UX capabilities also has a long-term impact on the organization's overall product development quality and efficiency.

Growth Opportunities:

• Technical Specialization: Deepen expertise in advanced frontend technologies, specific UX research methodologies, or specialized areas like accessibility or performance optimization.

• Leadership Track: Transition into management roles, such as Lead UX Engineer, Product Manager, or Engineering Manager, by leveraging influencing and coaching skills.

• Strategic UX Leadership: Become a principal architect of the company's UX strategy, leading initiatives to enhance design maturity across the organization.

• Cross-Functional Expertise: Expand knowledge into adjacent areas like product management, agile coaching, or business analysis.

📝 Enhancement Note: The role offers a strong pathway for individuals who excel in both technical execution (frontend) and strategic influence (UX leadership). The emphasis on LeSS and scaling capabilities suggests opportunities to grow into roles that manage or optimize complex product development ecosystems.

🌐 Work Environment

Office Type: The company offers a 100% REMOTE work environment. This means there is no physical office requirement for this role, providing maximum flexibility.

Office Location(s): While the job is listed with a Madrid address, the "100% REMOTE" designation and the requirement for candidates to be based in Spain indicates that physical presence in Madrid is not mandatory, but legal residency and ability to work in Spain are.

Workspace Context:

• Remote Collaboration: Expect a highly collaborative digital environment, relying on tools like Slack, Teams, Zoom, and project management software for communication and task management.

• Operations Tooling: Access to a modern technology stack for design, development, and collaboration. This includes design tools (e.g., Figma, Sketch), IDEs, version control systems (Git), and potentially CI/CD pipelines.

• Team Interaction: Regular virtual meetings, stand-ups, retrospectives, and pair programming sessions with distributed teams across Spain.

Work Schedule: The role is full-time, with approximately 40 hours per week. While remote, adherence to core working hours within the European time zone (Europe/Madrid) is expected to facilitate real-time collaboration with colleagues and stakeholders. Flexibility in daily scheduling is likely, provided all collaborative responsibilities are met.

📝 Enhancement Note: The 100% remote setup necessitates strong self-discipline, proactive communication, and comfort with digital collaboration tools. Candidates should be prepared to manage their own work environment effectively.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screen: A brief call with HR or a recruiter to assess basic qualifications, experience, and cultural fit, often including salary expectations.

• Technical/UX Assessment: This will likely involve a deep dive into your UX design process, frontend development skills, and understanding of product strategy. You may be asked to walk through your portfolio and present specific case studies.

• Case Study/Challenge: A practical exercise, potentially a take-home assignment or a live coding/design challenge, to evaluate your problem-solving abilities, technical skills, and approach to common product experience challenges. This might involve designing a feature, refactoring code, or proposing UX improvements for a given scenario.

• Team/Stakeholder Interviews: Meetings with potential colleagues, Product Owners, and engineering leads to assess collaboration style, communication skills, and fit within the LeSS framework.

• Hiring Manager Interview: A final discussion to cover overall fit, career aspirations, and alignment with the company's vision and values.

Portfolio Review Tips:

• Curate Strategically: Select 3-5 of your strongest projects that best showcase your hybrid UX/Frontend capabilities, experience with scaled agile (LeSS), and ability to influence UX maturity.

• Structure Case Studies: For each project, clearly articulate the problem, your role and responsibilities, the process you followed (research, design, development), the solutions implemented, and the measurable outcomes or impact.

• Highlight Hybrid Skills: Explicitly demonstrate how you integrated UX thinking into your frontend development and vice-versa. Show examples of design systems, reusable components, and UI pattern implementation.

• Showcase LeSS/Agile Experience: If possible, include projects where you worked in scaled agile environments, explaining your contribution to cross-team alignment and UX consistency.

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

Challenge Preparation:

• Understand LeSS: Brush up on LeSS principles, roles, and ceremonies. Be ready to discuss how UX and frontend work fits into this framework.

• Practice UX Problem-Solving: Anticipate questions about how you would approach designing a new feature, improving an existing one, or addressing a specific user pain point.

• Frontend Readiness: Be prepared for coding challenges or discussions about frontend architecture, performance optimization, and best practices for building scalable UIs.

• Influence & Coaching Scenarios: Prepare examples of how you've successfully influenced teams, coached junior members, or driven change in a collaborative, non-authoritative manner.

📝 Enhancement Note: The interview process will likely heavily scrutinize your ability to operate effectively in a LeSS environment and your capacity to elevate the UX maturity of the organization. Be ready to provide concrete examples that demonstrate these skills.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma, Sketch, Adobe XD, InVision (or similar tools for wireframing, prototyping, and user flow mapping).

• Frontend Development: Modern JavaScript frameworks (React, Angular, Vue.js), HTML5, CSS3 (Sass/LESS), build tools (Webpack, Vite), and version control systems (Git).

• Collaboration & Communication: Slack, Microsoft Teams, Zoom, Confluence, Jira.

• Design Systems: Tools and methodologies for creating, managing, and implementing design systems (e.g., Storybook).

Analytics & Reporting:

• Product Analytics: Google Analytics, Mixpanel, Amplitude, Hotjar, or similar for tracking user behavior, feature adoption, and conversion rates.

• Performance Monitoring: Tools for frontend performance analysis and optimization.

• Reporting Dashboards: Tools like Tableau, Power BI, or custom-built dashboards for visualizing key performance indicators (KPIs) related to product experience and development efficiency.

CRM & Automation:

• While not a direct CRM role, understanding CRM principles and how product experience impacts customer relationships is beneficial. Experience with tools that integrate product data with CRM platforms might be a plus.

• Workflow Automation: Familiarity with CI/CD pipelines (e.g., Jenkins, GitLab CI, GitHub Actions) for streamlining frontend deployments.

📝 Enhancement Note: Proficiency in Figma and a modern JavaScript framework like React is highly probable. The ability to work with and contribute to design systems is critical. Familiarity with tools that bridge design and development will be advantageous.

👥 Team Culture & Values

Operations Values:

• Collaboration: A strong emphasis on working together across teams and disciplines to achieve shared goals, especially crucial in a LeSS environment.

• Innovation & Digital Transformation: A drive to continuously improve and adopt new technologies and methodologies to deliver cutting-edge solutions.

• Commitment & Ownership: Taking responsibility for outcomes and delivering high-quality work that contributes to client success.

• Fun & Passion: Fostering an enjoyable work environment where team members are passionate about technology and their contributions.

• Trust & Transparency: Building strong relationships based on open communication and mutual respect.

Collaboration Style:

• Cross-functional Integration: Expect a highly collaborative approach where UX and Frontend engineers work seamlessly with Product Owners and other development team members.

• Process Improvement Culture: Teams are encouraged to regularly review their processes (e.g., in retrospectives) and identify opportunities for optimization and efficiency gains.

• Knowledge Sharing: A culture that values sharing expertise, best practices, and learnings through internal meetups, tech talks, and documentation.

📝 Enhancement Note: knowmad mood's values—collaboration, innovation, commitment, fun, and trust—suggest a dynamic, forward-thinking workplace. For operations roles, this translates to a proactive, team-oriented approach to problem-solving and continuous improvement.

⚡ Challenges & Growth Opportunities

Challenges:

• Scaling UX in Low-Maturity Environments: The primary challenge will be establishing and scaling UX best practices within teams that may not have prior experience or a strong design culture. This requires strong influence and educational skills.

• Maintaining Coherence in LeSS: Ensuring a consistent and high-quality product experience across multiple independent, yet interconnected, teams in a LeSS framework presents significant coordination and communication challenges.

• Balancing UX Ideals with Technical Realities: Effectively translating sophisticated UX designs into feasible and performant frontend code, while managing technical constraints and timelines.

• Bridging Disciplines: Successfully merging the distinct skill sets and perspectives of UX design and frontend development into a cohesive role and output.

Learning & Development Opportunities:

• Advanced UX/Frontend Skills: Opportunities to deepen expertise in specialized areas, such as advanced interaction design, accessibility standards, performance optimization, or emerging frontend technologies.

• Agile & LeSS Mastery: Gaining in-depth knowledge and practical experience in scaled agile methodologies, potentially leading to certifications or coaching roles.

• Organizational Design & Enablement: Developing skills in organizational change management, training program development, and coaching to foster UX maturity across a large organization.

• Leadership Development: Pathways to take on more strategic leadership roles, manage teams, or become a principal architect of product experience strategies.

📝 Enhancement Note: This role is ideal for someone who thrives on challenges and sees them as opportunities for growth. The "building and scaling" aspect of UX maturity offers a unique chance to shape how a large company approaches product design.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you had to establish UX practices in an environment with low design maturity. What steps did you take, and what was the outcome?" (Focus on your process, influence, and measurable impact).

• "How would you ensure UX consistency across multiple autonomous teams working on the same product within a LeSS framework?" (Discuss your strategies for design systems, communication, and collaboration).

• "Walk us through a complex frontend feature you built. What were the UX considerations, technical challenges, and how did you overcome them?" (Highlight your hybrid skills and problem-solving approach).

Company & Culture Questions:

• "What interests you about knowmad mood and our focus on digital transformation and sustainability?" (Research the company's mission, values, and recent projects).

• "How do you see yourself contributing to our culture of collaboration, innovation, and trust?" (Align your personal values and work style with their stated values).

Portfolio Presentation Strategy:

• Tell a Story: For each project, frame it as a narrative: the challenge, your journey through it, and the resolution. Emphasize your role and the specific contributions you made.

• Show, Don't Just Tell: Use visual aids effectively. Walk through wireframes, mockups, prototypes, and code snippets to illustrate your points.

• Quantify Results: Be prepared to discuss the impact of your work using data and metrics. If direct metrics aren't available, discuss how you would measure success for that project.

• Explain Your Process: Clearly articulate your UX design process and your frontend development workflow, highlighting how they integrate. Discuss your experience with design systems and scaled agile.

📝 Enhancement Note: Be prepared to discuss your experience with LeSS and how you've directly contributed to improving UX maturity. Your portfolio should be a strong testament to your hybrid skills and ability to deliver impactful product experiences.

📌 Application Steps

To apply for this operations position:

• Submit your application through the provided application link on the knowmad mood careers page.

• Portfolio Customization: Tailor your resume and cover letter to highlight your experience in UX design, frontend development, scaled agile (LeSS), and your ability to build UX capabilities. Select portfolio projects that best demonstrate these hybrid skills and your impact.

• Resume Optimization: Ensure your resume clearly outlines your years of experience, specific achievements in UX and frontend development, and any experience with design systems or agile methodologies. Use keywords from the job description.

• Interview Preparation: Practice articulating your experience with case studies that showcase your problem-solving skills, collaboration style, and ability to influence teams. Prepare to discuss your understanding of LeSS and how you approach hybrid roles.

• Company Research: Thoroughly research knowmad mood's mission, values, and recent projects. Understand their approach to digital transformation and how this role fits into their operational strategy.

⚠️ 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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