Senior UX & Frontend Engineer – Product Experience (LeSS)

📍 Job Overview

Job Title: Senior UX & Frontend Engineer – Product Experience (LeSS)

Company: knowmad mood

Location: Madrid, Community of Madrid, Spain

Job Type: FULL_TIME

Category: Revenue Operations / Sales Operations / GTM Operations (Focus on Product Experience & User-Centricity)

Date Posted: April 28, 2026

Experience Level: 5-10 Years

Remote Status: 100% Remote

🚀 Role Summary

• Drive high-quality user experiences from initial product intent through to production code delivery, ensuring a seamless and effective user journey.

• Implement complex frontend solutions that are not only technically sound but also prioritize usability, consistency, and overall product excellence.

• Act as a primary UX resource, establishing and evolving shared design principles, UI patterns, and best practices across multiple engineering teams.

• Foster a collaborative discovery process with Product Owners and engineers, actively contributing to problem definition and critical experience decisions.

• Ensure a unified and coherent product experience across a multi-team environment, specifically within a LeSS (Large-Scale Scrum) framework.

• Empower and coach engineering teams to enhance their UX capabilities, fostering progressive autonomy and a shared ownership of user experience.

📝 Enhancement Note: While the title suggests a UX/Frontend Engineering role, the emphasis on "Product Experience," "stakeholder management," "influencing teams without formal authority," and "LeSS environments" indicates a strong need for operations-minded individuals who can bridge the gap between design, development, and business objectives. This role requires a strategic understanding of how user experience directly impacts GTM success and revenue. The operations aspect lies in optimizing the process of delivering exceptional product experiences at scale.

📈 Primary Responsibilities

• Define, design, and implement high-quality user experiences that align with product strategy and business objectives, from initial concept to deployed code.

• Develop and deliver complex, production-ready frontend solutions, ensuring adherence to technical standards, performance benchmarks, and user-centric design principles.

• Serve as a key influencer and initial point of contact for UX, setting foundational principles, patterns, and shared best practices that guide multiple development teams.

• Engage in close collaboration with Product Owners and engineering teams during the discovery phase to thoroughly understand problems, define requirements, and make informed decisions about user experience.

• Maintain and champion the consistency of the overall product experience across a distributed, multi-team structure operating under the LeSS framework.

• Facilitate and guide development teams to elevate their UX proficiency, promoting a culture of continuous learning and empowering them to independently drive user-centric initiatives.

• Actively participate in and contribute to the evolution of design systems and shared UI patterns, ensuring scalability and maintainability of frontend components.

• Coach and mentor team members on UX best practices, usability testing methodologies, and the impact of user experience on product adoption and customer satisfaction.

📝 Enhancement Note: Responsibilities are framed to highlight the operational impact of UX and frontend development. The emphasis is on process optimization, cross-functional collaboration, and scalable delivery, which are core to Revenue/Sales/GTM Operations.

🎓 Skills & Qualifications

Education:

Experience:

• Minimum of 5 years of experience in developing user-oriented digital products within engineering-led teams.

• Proven track record of delivering complex frontend interfaces into production environments.

• More than 5 years of applying UX principles and product experience directly in delivery, not solely from a design perspective.

• Experience functioning as a primary or initial UX lead in organizations with low maturity or in early-stage development.

• Demonstrated experience in collaborative discovery, problem definition, and UX decision-making with Product Owners and stakeholders.

• Experience in contributing to or evolving design systems, UI patterns, or shared UX principles.

• Proven ability to influence and enable multiple teams without direct formal authority through coaching, pairing, and shared practices.

• Experience working within scaled agile environments or multi-team setups, such as LeSS or similar frameworks.

Required Skills:

• Advanced Frontend Development: Proficiency in modern JavaScript frameworks (e.g., React, Vue, Angular), HTML5, CSS3, and responsive design principles.

• User Experience (UX) Design & Application: Deep understanding of UX principles, user-centered design methodologies, usability testing, and the ability to translate insights into actionable frontend development.

• Product Experience Strategy: Ability to define and champion a cohesive product experience, ensuring alignment between user needs, business goals, and technical execution.

• Agile & Scaled Agile Frameworks (LeSS): Extensive experience working within agile methodologies, with a specific focus on LeSS or similar large-scale agile frameworks to manage cross-team dependencies.

• Design Systems & Component Libraries: Experience in building, contributing to, or leveraging design systems and component-based architectures for consistency and efficiency.

• Cross-Functional Collaboration: Exceptional ability to work effectively with Product Owners, engineers, designers, and other stakeholders, fostering strong working relationships.

• Communication & Coaching: Excellent verbal and written communication skills, with the ability to clearly articulate UX concepts and coach/mentor team members.

• Problem-Solving & Analytical Skills: Strong aptitude for identifying and resolving complex user experience and technical challenges.

Preferred Skills:

• TypeScript: Proficiency in TypeScript for enhanced frontend development.

• Performance Optimization: Experience in optimizing frontend performance for speed and efficiency.

• Accessibility Standards (WCAG): Knowledge of and experience implementing web accessibility standards.

• UI/UX Testing & Research Tools: Familiarity with tools for user testing, analytics, and feedback collection.

• CI/CD Pipelines: Understanding of Continuous Integration and Continuous Delivery processes for frontend applications.

• Internationalization (i18n) & Localization (l10n): Experience in developing products for global audiences.

📝 Enhancement Note: The listed skills are crucial for a role that bridges engineering and product strategy. Emphasis on "applying principles directly in delivery," "influencing without authority," and "LeSS environments" highlights the operational need for process alignment and scalable execution, common in GTM and RevOps.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrated UX Impact: Showcase projects where you directly influenced and improved user experience, leading to measurable business outcomes (e.g., increased conversion rates, reduced churn, improved user satisfaction scores).

• Frontend Development Showcase: Include examples of complex, production-ready frontend applications or features you developed, highlighting technical challenges overcome and code quality.

• Design System Contribution: Present instances where you contributed to or evolved a design system, including examples of reusable components, pattern libraries, and their adoption impact.

• Process Improvement Case Studies: Detail specific instances where you identified and optimized a process related to UX, product discovery, or frontend development delivery, quantifying the efficiency gains or quality improvements.

• Cross-Team Collaboration Examples: Provide evidence of successful collaboration in multi-team or scaled agile environments, illustrating how you facilitated communication, alignment, and shared understanding of product experience.

Process Documentation:

• Workflow Design & Optimization: Provide examples of how you've documented and optimized workflows for product discovery, UX research integration, or frontend development sprints, focusing on efficiency and clarity.

• System Implementation & Integration: Showcase experience in implementing or integrating new tools or processes that enhance the product development lifecycle, such as design system adoption or new agile practices.

• Measurement & Performance Analysis: Demonstrate how you track and analyze the performance of user experiences and frontend implementations, using data to drive iterative improvements and report on impact.

📝 Enhancement Note: A strong portfolio is critical for demonstrating practical application of UX and frontend skills within an operational context. The emphasis on "measurable outcomes," "process optimization," and "cross-team collaboration" aligns with the operational demands of this role in a scaled agile environment.

💵 Compensation & Benefits

Salary Range:

Benefits:

• Indefinite Contract: Secure, long-term employment with a stable contract.

• 100% Remote: Full flexibility to work from anywhere within Spain, eliminating commute time and offering a better work-life balance.

• Internal Training Programs: Access to continuous learning opportunities and skill development through knowmad mood's internal training calendar.

• Certification Access: Support for obtaining relevant professional certifications to enhance expertise.

• Flexible Compensation Plan: A comprehensive package that may include:

  • Health Insurance: Private medical coverage for employees.
  • Transportation Allowance: Support for commuting costs if applicable, or general flexibility.
  • Childcare Vouchers: Assistance for childcare expenses.
  • Restaurant Vouchers: For meal expenses.

• Referral Program ("Plan Amigo"): Incentives for recommending successful candidates to the company.

• Networking & Learning Events: Participation in company-organized events, meetups, tech days, and talks to foster community and knowledge sharing.

Working Hours:

• Standard full-time working hours, likely around 40 hours per week. Given the 100% remote nature and international client/team context, there may be flexibility in scheduling, but core working hours will be expected to align with European time zones for effective collaboration.

📝 Enhancement Note: Salary is estimated based on typical senior engineering roles in Madrid, Spain, adjusted for the specialized skills and remote nature. The benefits package is extensive, highlighting knowmad mood's commitment to employee well-being and professional development.

🎯 Team & Company Context

🏢 Company Culture

Industry: Digital Transformation, Technology Consulting, Software Development. knowmad mood operates within a dynamic sector focused on helping businesses leverage technology for growth and efficiency.

Company Size: Over 3,000 employees. This indicates a large, established organization with resources for training, development, and a structured approach to operations and project management.

Founded: An established company with a history (implied by size and growth), suggesting a stable but evolving work environment.

Team Structure:

• Cross-Functional & Distributed: The role operates within a multi-team structure, likely comprising Product Owners, UX designers, Frontend Engineers, Backend Engineers, QA, and potentially Scrum Masters or Agile Coaches.

• LeSS Framework: Operates within a Large-Scale Scrum framework, implying a need for strong inter-team coordination, clear communication channels, and defined roles to manage complexity across multiple product development teams.

• Engineering-Led Product Development: The product experience is shaped within teams led by engineering, emphasizing a practical, code-driven approach to UX delivery.

• Collaborative & Empowering: Values collaboration, innovation, commitment, fun, and trust, fostering an environment where team members are encouraged to share ideas, take ownership, and support each other.

Methodology:

• Agile & LeSS: Adherence to Agile principles, specifically scaled within the LeSS framework for managing multiple interdependent teams working on a shared product.

• User-Centric Product Development: A strong focus on understanding and delivering exceptional user experiences, integrating UX principles directly into the development lifecycle.

• Data-Driven Improvement: While not explicitly stated, the emphasis on "results" and "efficiency" suggests a culture that values data in decision-making and performance measurement.

• Continuous Learning & Innovation: Encourages internal training, certifications, and participation in tech events to stay at the forefront of digital transformation.

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

📝 Enhancement Note: The company's size and industry suggest a mature yet innovative environment. The mention of LeSS and cross-functional teams points to a structured approach to product development, requiring strong operational coordination and process adherence.

📈 Career & Growth Analysis

Operations Career Level: Senior Individual Contributor with significant influence. This role is positioned as a senior specialist who not only executes but also guides and coaches others. It sits at the intersection of technical execution (frontend development), user advocacy (UX), and process optimization (LeSS, cross-team influence).

Reporting Structure: Likely reports to an Engineering Manager, Head of Product, or a Lead within a larger Product Development group. Operates within a matrixed structure due to LeSS, collaborating closely with Product Owners and potentially an Agile Coach or Scrum Master.

Operations Impact: The role's impact is measured by the quality and efficiency of product experience delivery across multiple teams. By improving UX and frontend development processes, this role directly contributes to customer satisfaction, product adoption, and ultimately, business success. It influences how product value is perceived and realized by end-users, impacting retention and revenue.

Growth Opportunities:

• Specialization in Scaled Agile: Deepen expertise in LeSS and other scaled agile frameworks, becoming a go-to person for complex multi-team product development challenges.

• Product Strategy & Leadership: Progress towards Product Management or UX Leadership roles by leveraging a strong understanding of user needs, market dynamics, and the technical feasibility of product initiatives.

• Technical Architecture: Grow into a technical architect role, focusing on the design and implementation of scalable, high-performance frontend systems and design systems.

• Mentorship & Coaching: Develop leadership skills by mentoring junior engineers and UX specialists, and by coaching teams on best practices in UX and frontend development.

• Digital Transformation Expertise: Further develop expertise in digital transformation by working on diverse client projects and contributing to innovative solutions.

📝 Enhancement Note: This role offers a unique path for growth, blending technical depth with strategic influence. The operational aspect is evident in the emphasis on process scaling, cross-team alignment, and driving efficiency in product delivery.

🌐 Work Environment

Office Type: 100% Remote. This signifies a fully distributed workforce, emphasizing trust, autonomy, and digital collaboration tools.

Office Location(s): While the job is posted in Madrid, Spain, and the salary is benchmarked for this region, the 100% remote nature means the employee can work from anywhere within Spain. The company itself has a physical presence in Madrid (Plaza de la Independencia, 28001).

Workspace Context:

• Digital Collaboration Hub: The primary workspace is digital, relying heavily on tools like Slack, Microsoft Teams, Zoom, Jira, Confluence, and collaborative design platforms (e.g., Figma).

• Asynchronous & Synchronous Communication: Expect a mix of real-time meetings and asynchronous communication, requiring strong organizational skills to manage time effectively across different working styles and potentially time zones within Spain.

• Team Interaction: While remote, emphasis is placed on planned interactions such as daily stand-ups, sprint planning, retrospectives, and regular syncs with Product Owners and other stakeholders to maintain team cohesion and project momentum.

• Operations Tool Proficiency: Workflows will likely be managed through project management tools and version control systems, requiring familiarity with standard software development operations.

Work Schedule:

• Full-time, likely around 40 hours per week. Flexibility is a given in a remote setup, but core hours will be necessary for synchronous collaboration with teams and stakeholders, particularly within Spanish business hours.

📝 Enhancement Note: The remote nature necessitates a high degree of self-discipline and proficiency with digital collaboration tools. The operational aspect is in managing distributed workflows and ensuring seamless communication across a virtual team.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with HR or a recruiter to assess basic qualifications, cultural fit, and understanding of the role's remote and scaled agile context.

• Technical & UX Assessment: Likely involves a conversation with engineering leads or senior team members to delve into frontend development skills, UX principles, and practical application. This may include a review of your portfolio.

• Portfolio Presentation & Case Study: A dedicated session where you present selected projects from your portfolio, focusing on your contributions, the problems you solved, the processes you followed, and the impact achieved. This is particularly crucial for showcasing your experience in product discovery, UX application, and cross-team influence.

• Scaled Agile/LeSS Discussion: An interview segment focused on your experience with LeSS or similar scaled agile frameworks, how you navigate multi-team dependencies, and your ability to influence without formal authority.

• Stakeholder/Product Owner Interview: A conversation to assess your collaboration style, communication skills, and ability to align technical and UX efforts with product vision and business goals.

• Final Interview: Likely with a senior leader (e.g., Head of Engineering, VP of Product) to finalize the decision, focusing on strategic alignment and long-term fit.

Portfolio Review Tips:

• Curate Strategically: Select 2-3 of your most impactful projects that directly align with the job description's emphasis on "product experience," "UX application in delivery," and "multi-team collaboration."

• Quantify Impact: For each project, clearly articulate the problem, your role, the solutions you implemented (both UX and frontend code), and most importantly, the measurable results. Use metrics like conversion rates, task completion times, user satisfaction scores, or efficiency gains.

• Showcase Process: Detail the methodology you followed – your approach to discovery, user research, design iteration, and frontend development within an agile context. Highlight your experience with LeSS or similar frameworks.

• Demonstrate Influence: For projects involving multiple teams, explain how you fostered collaboration, communicated effectively, and influenced decisions to ensure a cohesive product experience, even without direct authority.

• Technical Depth: Be prepared to discuss the technical aspects of your frontend work, code quality, and any challenges related to design systems or complex UI implementations.

Challenge Preparation:

• UX Problem-Solving: Be ready for scenario-based questions where you'll need to outline your approach to solving a specific user experience problem within a scaled agile context.

• LeSS/Agile Scenarios: Prepare to discuss how you would handle common challenges in a LeSS environment, such as managing conflicting priorities across teams, ensuring consistent UX, or facilitating communication.

• Stakeholder Alignment: Practice articulating how you would align different stakeholders (e.g., Product Owners, engineers, business leads) on UX decisions and product direction.

📝 Enhancement Note: The interview process emphasizes practical application and operational skill in a scaled agile environment. A strong portfolio that demonstrates measurable impact and process understanding is key.

🛠 Tools & Technology Stack

Primary Tools:

• Frontend Frameworks: React, Vue, or Angular (proficiency expected).

• JavaScript/TypeScript: Core programming languages.

• HTML5 & CSS3: Foundation of web development.

• Version Control: Git (essential for collaborative development).

• Build Tools: Webpack, Vite, or similar (for bundling and optimization).

• Package Managers: npm or Yarn.

Analytics & Reporting:

• Web Analytics Platforms: Google Analytics, Adobe Analytics, or similar (for understanding user behavior).

• UX Analytics Tools: Hotjar, FullStory, or similar (for heatmaps, session recordings, user feedback).

• Performance Monitoring Tools: Lighthouse, WebPageTest, or browser developer tools.

CRM & Automation:

• Project Management/Agile Tools: Jira, Azure DevOps, Asana, Trello (for workflow management and tracking).

• Collaboration Platforms: Slack, Microsoft Teams (for real-time communication).

• Documentation Tools: Confluence, Notion (for knowledge sharing and process documentation).

• Design Tools: Figma, Sketch, Adobe XD (for collaboration with design, even if not primary design tool).

📝 Enhancement Note: Proficiency with modern frontend technologies and agile project management tools is fundamental. The inclusion of UX analytics and performance monitoring tools indicates a focus on data-driven optimization of the product experience, a key operational aspect.

👥 Team Culture & Values

Operations Values:

• Collaboration: Actively seek and foster collaboration across teams, Product Owners, and stakeholders to ensure alignment and shared success in delivering exceptional product experiences.

• Innovation: Embrace new ideas, technologies, and approaches to continuously improve UX and frontend development processes, driving forward the company's digital transformation mission.

• Commitment: Demonstrate dedication to delivering high-quality work, meeting project goals, and contributing to the long-term success of the product and the company.

• Fun: Contribute to a positive and enjoyable work environment, recognizing that a healthy team dynamic can boost creativity and productivity.

• Trust: Build and maintain trust through transparency, reliability, and open communication, fostering a secure environment for experimentation and feedback.

Collaboration Style:

• Cross-Functional Integration: Work seamlessly with Product Owners and engineering teams, acting as a bridge between user needs, business objectives, and technical implementation.

• Process-Oriented: Participate actively in agile ceremonies (stand-ups, planning, retrospectives) and contribute to the refinement of team and multi-team processes to enhance efficiency and quality.

• Knowledge Sharing: Proactively share expertise, best practices, and lessons learned through pair programming, documentation, internal talks, and mentorship.

• Feedback Culture: Openly give and receive constructive feedback to drive continuous improvement in both individual performance and team processes.

📝 Enhancement Note: The company's stated values directly support the operational requirements of this role, emphasizing teamwork, continuous improvement, and a positive, results-oriented environment.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing UX Vision with Technical Constraints: Navigating the complexities of delivering an ideal user experience while adhering to strict technical limitations, performance requirements, and project timelines across multiple teams.

• Influencing Without Authority in LeSS: Effectively guiding and enabling multiple independent teams to adopt and maintain consistent UX standards and frontend best practices without direct managerial oversight.

• Maintaining Cohesion in a Distributed Team: Ensuring a unified product experience and strong team collaboration across a 100% remote environment with potentially diverse working styles and time zones within Spain.

• Keeping Pace with Evolving Technologies: Continuously learning and adapting to new frontend technologies, UX trends, and agile methodologies to maintain a high level of expertise.

Learning & Development Opportunities:

• Advanced UX & Product Strategy: Deepen expertise in user research, usability testing, and product discovery methodologies through hands-on experience and potential training.

• LeSS & Scaled Agile Expertise: Become a subject matter expert in large-scale agile frameworks, contributing to process improvement and best practices within knowmad mood.

• Frontend Architecture & Performance: Develop skills in designing scalable frontend architectures, optimizing application performance, and implementing advanced accessibility features.

• Leadership & Mentorship: Gain experience in coaching and mentoring junior team members, fostering their growth and contributing to the overall skill development of the engineering organization.

• Industry Conferences & Certifications: Opportunities to attend relevant industry events and pursue certifications to stay current and gain broader perspectives.

📝 Enhancement Note: The challenges highlight the operational complexities of large-scale product development and the need for strong process management and influence skills. Growth opportunities are geared towards both technical and leadership advancement within the operations and product development spheres.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you had to influence multiple engineering teams to adopt a new UX pattern or frontend best practice without direct authority. What was your approach, and what was the outcome?" (Focus on influence, communication, and process adoption.)

• "How would you approach defining and ensuring a consistent user experience across several independent teams working on different components of the same product within a LeSS framework?" (Focus on LeSS operations, process standardization, and collaboration.)

Company & Culture Questions:

• "Based on your understanding of knowmad mood's values and our focus on digital transformation, how would you contribute to our culture of innovation and collaboration as a Senior UX & Frontend Engineer?" (Focus on cultural fit and alignment with company mission.)

• "How do you approach working in a fully remote, distributed team environment, and what strategies do you employ to ensure effective communication and collaboration?" (Focus on remote work operations and team dynamics.)

Portfolio Presentation Strategy:

• Narrative Arc: For each project, frame it as a story: the problem, your role, the process (discovery, design, development), the solution, and the quantifiable results.

• Visual Aids: Use screenshots, mockups, code snippets (if appropriate), and data visualizations to illustrate your points effectively.

• Focus on Process: Emphasize how you achieved the results, highlighting your understanding of agile methodologies, UX principles, and cross-team collaboration.

• Quantify Everything: Be ready to discuss metrics, ROI, and any data that demonstrates the impact of your work.

• Tailor to LeSS: When discussing multi-team projects, clearly explain your role in facilitating communication and ensuring alignment within a scaled agile structure.

📝 Enhancement Note: Interview questions will likely probe your understanding of operationalizing product experience, especially within scaled agile environments. Your preparation should focus on demonstrating your ability to drive results through process, influence, and technical excellence.

📌 Application Steps

To apply for this operations-aligned UX & Frontend Engineer position:

• Submit your application through the provided link on the knowmad mood Teamtailor platform.

• Curate Your Portfolio: Select 2-3 key projects that best showcase your experience in product experience delivery, frontend development complexity, and cross-team influence within scaled agile environments (like LeSS). Prioritize projects with measurable outcomes.

• Optimize Your Resume: Highlight keywords such as "UX," "Frontend Development," "Product Experience," "LeSS," "Agile," "Design Systems," "Stakeholder Management," and "Coaching." Quantify your achievements and responsibilities.

• Prepare for Portfolio Presentation: Practice articulating your contributions, the processes you followed, and the impact of your work. Be ready to discuss your experience in influencing teams without formal authority and in scaled agile settings.

• Research knowmad mood: Understand their mission, values, and approach to digital transformation. Consider how your skills in optimizing product experience delivery align with their operational goals.

⚠️ 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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