Senior UI Engineer - Design Systems Team Lead

📍 Job Overview

Job Title: Senior UI Engineer - Design Systems Team Lead

Company: Barclays

Location: Prague, Czechia (Gemini Building A)

Job Type: FULL_TIME

Category: Engineering / Design Systems

Date Posted: 2026-05-11

Experience Level: 10+ Years (Senior Level)

Remote Status: On-site

🚀 Role Summary

• Lead and mentor a team of UI engineers in the development and evolution of a comprehensive, React-based design system and component library.

• Drive the architectural vision for the design system, ensuring reusability, accessibility, performance, and maintainability across multiple applications.

• Collaborate closely with Product Managers and Designers to translate design tokens, specifications, and interaction patterns into robust, production-ready UI components.

• Enhance the developer experience by creating and maintaining essential tooling, documentation, and adoption enablement resources.

• Champion accessibility standards (WCAG 2.1 AA) and inclusive design principles, embedding them into team practices and the design system's core.

📝 Enhancement Note: This role is positioned as a senior individual contributor with significant leadership responsibilities for a specialized engineering team focused on foundational UI development. The emphasis is on technical leadership, architectural ownership, and fostering a collaborative, high-performance engineering culture within the Design Systems domain. The "Team Lead" aspect suggests direct people management or, at minimum, strong technical direction and mentorship for a dedicated group of UI engineers.

📈 Primary Responsibilities

• Provide technical leadership and strategic direction for the Design Systems team, guiding architectural decisions and best practices for UI development.

• Architect, develop, and maintain a scalable, versioned, React-based component library that serves as the backbone for Barclays' digital experiences.

• Translate design specifications, design tokens (e.g., using Style Dictionary, Token Studio), and interaction patterns into well-documented, reusable UI components.

• Develop and implement comprehensive testing strategies, including unit, integration, and visual regression testing, to ensure the quality and reliability of the component library.

• Champion and enforce accessibility standards (WCAG 2.1 AA) and inclusive design principles throughout the design system lifecycle.

• Create and maintain high-quality documentation, examples, and developer guides to facilitate efficient adoption and contribution from engineering teams across the organization.

• Design and implement tooling and workflows that improve the developer experience, streamline adoption, and reduce friction for teams utilizing the design system.

• Collaborate with Product Management, UX/UI Design, and Platform Engineering teams to align the design system roadmap with business objectives and technical strategies.

• Contribute to the continuous improvement of build pipelines, release processes, and CI/CD strategies for the component library.

• Act as a subject matter expert for frontend architecture, design systems, and UI engineering best practices, advising stakeholders across the enterprise.

📝 Enhancement Note: The responsibilities clearly indicate a hands-on technical leadership role. The emphasis on architectural ownership, testing strategies, documentation, and developer experience points to a need for a candidate who can not only build but also operationalize and scale a critical design system asset. The mention of "Vice President Expectations" suggests a high level of strategic influence and potential for broader departmental oversight.

🎓 Skills & Qualifications

Education: While not explicitly stated, a Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field is typically expected for a Senior Engineer role with leadership responsibilities.

Experience: 10+ years of progressive experience in frontend engineering, with a significant portion focused on building and maintaining design systems and component libraries at scale.

Required Skills:

• Proven experience leading and mentoring engineering teams, fostering a culture of technical excellence and collaboration.

• Deep proficiency in React and TypeScript, with a strong portfolio showcasing complex component development.

• Extensive experience building and managing component libraries and design systems for enterprise-level applications.

• Strong understanding of modern CSS, including CSS custom properties, CSS-in-JS solutions, and utility-first frameworks like Tailwind CSS.

• Expertise in design token management and transformation tools (e.g., Style Dictionary, Token Studio).

• Solid understanding and practical application of web accessibility standards (e.g., WCAG 2.1 AA), including ARIA patterns and keyboard navigation.

• Experience with component documentation tools such as Storybook, including writing stories, documentation, and visual regression tests.

• Familiarity with modern build tools (Vite, Rollup) and package management for library development (npm/pnpm workspaces).

Preferred Skills:

• Experience with Vue.js or other modern frontend frameworks, demonstrating adaptability.

• Knowledge of animation libraries and micro-interaction implementation.

• Experience with monorepo tooling (Nx, Turborepo) and CI/CD pipelines for component libraries.

• Understanding of semantic versioning, changelog management, and library release processes.

• Contributions to open-source design systems or component libraries.

• Experience with Figma plugin development or design-to-code tooling.

• Background in establishing engineering standards, code review practices, and technical documentation.

📝 Enhancement Note: The required skills highlight a deep technical specialization in React and design systems, combined with leadership and communication abilities. The preferred skills suggest that candidates with broader frontend experience, familiarity with advanced tooling, and open-source contributions will have a competitive edge. The "10+" years of experience aligns with a Senior-level role requiring significant expertise and leadership.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrable experience building and maintaining a comprehensive React-based component library or design system that has been adopted by multiple teams.

• Case studies showcasing the translation of abstract design concepts (e.g., design tokens, interaction patterns) into concrete, reusable UI components.

• Examples of implemented accessibility features (WCAG 2.1 AA compliance) within components, with clear explanations of the approach.

• Documentation samples from Storybook or similar tools, illustrating clear component APIs, usage guidelines, and visual regression testing configurations.

Process Documentation:

• Evidence of established processes for component development lifecycle, including design handoff, coding, testing, documentation, and release management.

• Documentation of established developer experience improvements and tooling integrations designed to streamline component adoption.

• Examples of testing strategies implemented for component libraries, including unit tests, visual regression tests, and accessibility audits.

• Documentation outlining semantic versioning strategies and release notes for component library updates.

📝 Enhancement Note: A strong portfolio is critical for this role, showcasing not just coding ability but also the strategic thinking and process orientation required to build and scale a design system. Candidates should be prepared to walk through their portfolio, explaining the "why" behind their technical and process decisions, focusing on impact and scalability.

💵 Compensation & Benefits

Salary Range: Based on the Senior Engineer level, 10+ years of experience, and the location in Prague, Czechia, a competitive salary range for this role would typically fall between €70,000 - €100,000 CZK gross per year. This estimate is derived from industry benchmarks for senior frontend engineering roles in major European tech hubs, considering the specific demands of design systems leadership and the cost of living in Prague.

Benefits:

• Comprehensive health and wellness programs.

• Generous paid time off and holiday allowances.

• Pension scheme contributions.

• Professional development opportunities, including training, conferences, and certifications.

• Potential for performance-based bonuses.

• Employee assistance programs.

• Access to company-wide learning platforms and resources.

• Hybrid work arrangements and flexible working hours (within team coordination needs).

Working Hours: 40 hours per week is standard. While the role is on-site, there may be flexibility in daily start/end times to accommodate team collaboration and personal needs, as long as core hours are covered for team interaction and design system adoption support.

📝 Enhancement Note: The salary range is an estimate based on typical compensation for senior engineering roles with leadership components in Prague. Actual compensation will depend on the candidate's specific experience, interview performance, and Barclays' internal compensation structure for this level. The benefits listed are standard for large financial institutions and are tailored to attract and retain senior talent in technical roles.

🎯 Team & Company Context

🏢 Company Culture

Industry: Financial Services (Banking). Barclays is a global financial services provider with a significant focus on digital transformation and enhancing customer and colleague experiences through technology.

Company Size: Large Enterprise (over 10,000 employees globally). This implies established processes, a structured environment, and opportunities for large-scale impact.

Founded: 1809. Barclays has a long history, suggesting stability, a strong heritage, and a culture that balances tradition with innovation.

Team Structure:

• The role is within the Digital Experience Platform team, focusing on the foundational UI elements.

• This team likely consists of specialized engineers (UI, frontend, possibly backend for tooling), UX/UI designers, and Product Managers.

• The Senior UI Engineer will lead a dedicated group of UI engineers focused on the design system.

Methodology:

• Data-driven decision-making is implied, especially in performance and adoption metrics for the design system.

• Agile methodologies are likely employed for development sprints and roadmap planning.

• Continuous integration and continuous delivery (CI/CD) practices are expected for the component library.

• Emphasis on quality, performance, and accessibility as core engineering principles.

Company Website: https://home.barclays/

📝 Enhancement Note: Barclays' scale and industry present unique challenges and opportunities for a Design Systems team. The role requires navigating a large organization, influencing diverse teams, and ensuring that a foundational UI library meets the needs of a complex business with high compliance and security standards.

📈 Career & Growth Analysis

Operations Career Level: This is a Senior Individual Contributor role with explicit Team Lead responsibilities. It represents a significant step in a frontend engineering career, moving towards technical leadership and architectural ownership of critical platform components. It bridges hands-on development with strategic guidance and team mentorship.

Reporting Structure: The role reports into a higher-level engineering manager or director overseeing the Digital Experience Platform or similar product engineering vertical. The individual will lead a team of UI Engineers, potentially reporting directly to them.

Operations Impact: The design system and component library directly impact the consistency, efficiency, and speed of development for all digital products at Barclays. This role has a significant influence on:

• Development Velocity: Enabling faster feature delivery by providing ready-made, tested components.

• Brand Consistency: Ensuring a unified user experience across all Barclays digital touchpoints.

• Accessibility Compliance: Reducing the risk of non-compliance and improving user inclusivity.

• Engineering Efficiency: Reducing duplicated effort and standardizing best practices.

Growth Opportunities:

• Technical Leadership: Deeper architectural expertise in frontend technologies, design systems, and platform engineering.

• People Management: Transitioning into a formal management role with direct reports and team-building responsibilities.

• Strategic Influence: Contributing to broader technology strategy and digital transformation initiatives within Barclays.

• Specialization: Becoming a recognized expert in design systems, accessibility, or frontend platform architecture within the industry.

• Cross-functional Mobility: Opportunities to move into product management, platform engineering leadership, or other strategic technical roles.

📝 Enhancement Note: This role is a strong stepping stone for engineers looking to deepen their expertise in design systems and take on leadership responsibilities. The impact is broad, affecting numerous development teams and ultimately the end-user experience of a major financial institution.

🌐 Work Environment

Office Type: On-site at a modern office facility (Gemini Building A, Prague). This suggests a structured, professional corporate environment.

Office Location(s): Prague, Czechia. This location offers a vibrant tech scene and a central European hub.

Workspace Context:

• Collaborative Environment: The role requires close collaboration with designers, product managers, and other engineers, implying open-plan or team-based workspace arrangements.

• Tools & Technology: Access to standard corporate IT infrastructure, development workstations, and potentially specialized hardware or software for design and development.

• Team Interaction: Opportunities for daily stand-ups, design reviews, code reviews, and ad-hoc problem-solving sessions with the immediate team and broader engineering community.

Work Schedule: Standard full-time hours (40 hours/week) with potential for some flexibility. The on-site nature requires adherence to office hours for consistent team availability and collaboration.

📝 Enhancement Note: The on-site requirement in Prague indicates a preference for direct team collaboration and a structured work environment typical of large financial institutions. This setting is conducive to fostering strong team cohesion and facilitating in-person knowledge sharing.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: HR or Recruiter call to assess basic qualifications, interest, and cultural fit.

• Technical Screening: A call or coding exercise with a senior engineer or engineering manager to evaluate core technical skills (React, TypeScript, CSS, problem-solving).

• Design System/Architecture Deep Dive: A session focused on your experience with design systems, component libraries, architectural decisions, and your approach to building scalable, accessible UIs. This may involve discussing your portfolio.

• Team Lead/Mentorship Interview: Discussion about your leadership style, experience mentoring engineers, team-building strategies, and how you foster collaboration and technical excellence.

• Cross-Functional Collaboration Interview: A session with representatives from Product Management and UX/UI Design to assess your collaboration skills, ability to translate requirements, and stakeholder management.

• Final Interview: Often with a Director or VP level stakeholder to discuss strategic alignment, leadership vision, and overall fit within the organization.

Portfolio Review Tips:

• Curate Strategically: Select 2-3 of your strongest projects that directly showcase your experience with React, design systems, component libraries, and accessibility. Prioritize projects that demonstrate scale and impact.

• Focus on Impact & Process: For each project, clearly articulate the problem you were solving, your specific role, the technical approach (including architecture and key decisions), the impact (quantifiable metrics if possible, e.g., adoption rates, time savings, bug reduction), and lessons learned.

• Showcase Design System Elements: Highlight specific components you built, your approach to theming, documentation (Storybook examples), and how you ensured accessibility and performance.

• Prepare for Questions: Be ready to discuss your design choices, trade-offs made, how you handled disagreements, and how you fostered adoption and collaboration.

Challenge Preparation:

• Coding Challenges: Expect JavaScript/TypeScript coding challenges focused on algorithms, data structures, and modern JavaScript patterns.

• System Design/Architecture: Be prepared for questions about designing scalable frontend architectures, building reusable component systems, and managing library dependencies.

• Design System Scenarios: You might be asked to design a component, outline a strategy for adopting the design system, or solve a common design system challenge (e.g., theming complexity, accessibility issues).

• Leadership Scenarios: Prepare to discuss how you would handle team conflict, mentor junior engineers, drive adoption, or manage stakeholder expectations.

📝 Enhancement Note: The interview process is designed to assess a broad range of skills, from deep technical expertise to leadership capabilities and cross-functional collaboration. A well-prepared portfolio that clearly articulates impact and process is essential for this role.

🛠 Tools & Technology Stack

Primary Tools:

• Framework: React (primary)

• Language:

TypeScript

• Styling: Modern CSS (CSS Custom Properties, CSS-in-JS solutions, Tailwind CSS)

• Component Documentation/Development:

Storybook

• Design Token Management: Style Dictionary,

Token Studio

• Build Tools: Vite,

Rollup

• Package Management: npm, pnpm, Yarn, potentially

npm/pnpm workspaces

• Monorepo Tools (Preferred): Nx, Turborepo

Analytics & Reporting:

• Tools for tracking design system adoption and component usage (e.g., custom analytics, potentially integrated with product analytics platforms).

CRM & Automation:

• While not directly CRM-focused, tools for managing developer feedback, bug tracking (e.g., Jira), and potentially CI/CD pipelines (e.g., Jenkins, GitLab CI, GitHub Actions) are relevant for library management.

• Figma (or similar design tools) for collaboration with designers.

📝 Enhancement Note: Proficiency across this stack, particularly React, TypeScript, modern CSS, Storybook, and design token tooling, is crucial. Familiarity with monorepos and CI/CD for libraries will be a significant advantage.

👥 Team Culture & Values

Operations Values:

• Excellence: Commitment to high-quality, performant, and accessible code.

• Integrity: Upholding ethical standards in development and data handling.

• Stewardship: Responsible management of shared resources (the design system) for the benefit of the entire organization.

• Respect: Valuing diverse perspectives from team members and stakeholders.

• Service: Focusing on enabling other engineering teams to succeed through robust tools and support.

Collaboration Style:

• Cross-functional Partnership: Working closely with Product Managers, UX/UI Designers, and various engineering teams to ensure alignment and successful adoption.

• Data-Informed Decisions: Using metrics on adoption, performance, and bug reports to guide improvements.

• Proactive Communication: Regularly sharing updates, roadmaps, and best practices with stakeholders.

• Feedback-Driven Development: Actively seeking and incorporating feedback from consuming teams to iterate on the design system.

📝 Enhancement Note: The Barclays values (Respect, Integrity, Service, Excellence, Stewardship) and Mindset (Empower, Challenge, Drive) are foundational. For this role, expect a culture that values rigorous engineering, collaborative problem-solving, and a drive to continuously improve the digital experience for customers and colleagues.

⚡ Challenges & Growth Opportunities

Challenges:

• Driving Adoption: Convincing diverse engineering teams across a large organization to adopt a new or evolving design system can be challenging due to existing workflows and technical debt.

• Maintaining Consistency: Ensuring design and code consistency across a vast product portfolio while allowing for necessary customization.

• Balancing Innovation and Stability: Keeping the design system up-to-date with modern technologies and trends while maintaining stability for consuming applications.

• Technical Debt Management: Addressing legacy components or outdated patterns within the system.

• Accessibility Compliance at Scale: Ensuring all components meet stringent accessibility standards across diverse use cases.

Learning & Development Opportunities:

• Advanced Frontend Architecture: Deepening expertise in complex frontend systems, micro-frontends, and performance optimization.

• Leadership Development: Formal training and mentorship in people management, strategic planning, and executive communication.

• Industry Best Practices: Staying abreast of the latest trends in design systems, component libraries, and UI engineering through conferences, workshops, and community engagement.

• Cross-Domain Exposure: Gaining insights into other areas of financial technology, product management, and enterprise architecture.

📝 Enhancement Note: This role offers significant opportunities to tackle complex, large-scale engineering challenges that have a tangible impact. The learning curve will be steep, but the growth potential, both technically and managerially, is substantial within a global organization like Barclays.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you led an engineering team through a significant technical challenge. What was your approach, and what was the outcome?" (Focus on leadership, problem-solving, and team empowerment).

• "How would you approach increasing the adoption rate of our design system across development teams that are resistant to change?" (Focus on influence, communication, and value proposition).

Company & Culture Questions:

• "What do you know about Barclays' digital strategy, and how do you see a design system contributing to it?" (Research Barclays' recent tech announcements and digital initiatives).

• "How do you foster a culture of technical excellence and continuous improvement within an engineering team?" (Relate to Barclays' values and mindset).

Portfolio Presentation Strategy:

• Storytelling: Frame your portfolio projects as narratives – problem, solution, impact, and learnings.

• Focus on Decisions: Be prepared to explain why you made certain technical or architectural choices, the trade-offs involved, and how they contributed to the project's success.

• Highlight Leadership: For team lead aspects, articulate how you guided your team, mentored individuals, and fostered a collaborative environment.

• Quantify Impact: Use metrics wherever possible (e.g., adoption rates, performance improvements, reduction in bug reports, developer productivity gains).

• Demo Interactive Elements: If possible, have live demos or interactive prototypes of your work to showcase functionality and user experience.

📝 Enhancement Note: Preparation should emphasize not only technical depth but also your ability to lead, influence, and collaborate within a large enterprise. Demonstrating an understanding of how design systems contribute to business goals is key.

📌 Application Steps

To apply for this Senior UI Engineer - Design Systems Team Lead position at Barclays:

• Submit your application through the provided Workday link.

• Tailor your resume: Highlight your experience with React, TypeScript, design systems, component libraries, web accessibility (WCAG), and any team leadership or mentorship roles. Quantify achievements where possible.

• Prepare your portfolio: Curate 2-3 strong projects showcasing your design system work. Be ready to present them clearly, focusing on process, impact, and technical decisions.

• Research Barclays: Understand their digital strategy, recent news, and company values to tailor your responses and demonstrate genuine interest.

• Practice interview questions: Prepare for technical, leadership, and behavioral questions, and practice articulating your experience using the STAR method (Situation, Task, Action, Result).

⚠️ 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.