Senior UI Engineer - Design Systems Team Lead

📍 Job Overview

Job Title: Senior UI Engineer - Design Systems Team Lead

Company: Barclays

Location: Gemini Building A, Prague, Czechia

Job Type: Full time

Category: Engineering - UI/Frontend Operations

Date Posted: 2026-08-14

Experience Level: 5-10 years

Remote Status: On-site

🚀 Role Summary

• Lead and mentor a team of UI engineers to architect and maintain a scalable, accessible React-based component library.

• Drive the adoption and evolution of a comprehensive design system, ensuring consistency and efficiency across digital products.

• Collaborate strategically with product, design, and platform engineering teams to align the design system roadmap with business objectives.

• Champion modern engineering practices, including robust testing strategies, accessibility standards, and developer experience improvements.

• Actively contribute to code development and architectural decisions, fostering technical excellence within the team.

📝 Enhancement Note: This role is positioned within the "Digital Experience Platform" team, indicating a focus on foundational UI infrastructure that supports multiple applications. The emphasis on "Design Systems" and "Component Libraries" points to a highly specialized, operations-critical function within the engineering organization, aimed at standardizing UI development and accelerating delivery cycles.

📈 Primary Responsibilities

• Team Leadership & Mentorship:

  • Lead, mentor, and develop a team of UI engineers, defining roles, responsibilities, and fostering a culture of technical excellence, collaboration, and continuous improvement.
  • Provide guidance on career development, performance management, and technical skill enhancement for team members.
  • Drive the adoption of modern engineering methodologies and best practices within the UI engineering team.

• Design System Architecture & Development:

  • Architect and own the React-based component library, ensuring it adheres to modern design system principles, accessibility standards (WCAG 2.1 AA), and performance best practices.
  • Develop and maintain reusable, production-ready UI components, translating design tokens, specifications, and interaction patterns from designers into robust code.
  • Implement comprehensive testing strategies, including unit tests, visual regression tests, and accessibility audits, to ensure high-quality and reliable components.

• Developer Experience & Tooling:

  • Create and maintain essential tooling, documentation, and developer experience improvements to facilitate efficient adoption and contribution to the design system by engineering teams.
  • Develop clear component APIs, establish design patterns, and maintain thorough documentation for library consumers.

• Cross-Functional Collaboration & Strategy:

  • Partner with Product Managers, Designers, and Platform Engineers to define the design system roadmap, align with business objectives, and manage component evolution.
  • Collaborate with stakeholders to champion design system adoption, gather feedback, and drive strategic architectural decisions.
  • Advise functional leadership and senior management on the impact and alignment of the design system strategy.

• Risk Management & Control:

  • Manage and mitigate risks associated with component library development and adoption, supporting the overall control and governance agenda.

  • Ensure the team's work demonstrates leadership and accountability for managing risk and strengthening controls.

📝 Enhancement Note: The responsibilities clearly delineate between leadership duties (team management, strategy, stakeholder advising) and hands-on engineering contributions (architecting, developing, testing components). This dual focus is common for Team Lead roles in specialized engineering functions, requiring a balance of technical depth and people management skills. The emphasis on "architectural ownership," "strategic collaboration," and "contribution to strategic architectural decisions" highlights the significant influence this role has on the company's UI development strategy.

🎓 Skills & Qualifications

Education:

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience. Experience:

• 5-10 years of progressive experience in UI/frontend engineering, with a significant focus on building and scaling design systems and component libraries.

• Proven experience in a leadership or team lead capacity, mentoring engineers and fostering a high-performing, collaborative team environment. Required Skills:

• Frontend Development: Extensive proficiency in React and TypeScript for building complex, scalable frontend applications and component libraries.

• Design Systems & Component Libraries: Demonstrable experience architecting, developing, and maintaining design systems and reusable component libraries at scale.

• Modern CSS: Deep understanding of modern CSS, including CSS custom properties, CSS-in-JS solutions (e.g., Styled Components, Emotion), and utility-first frameworks (e.g., Tailwind CSS).

• Design Tokens: Experience with design tokens and the tooling used for their transformation across platforms (e.g., Style Dictionary, Token Studio).

• Accessibility: Solid understanding of web accessibility standards (WCAG 2.1 AA) and practical experience implementing ARIA patterns, keyboard navigation, and inclusive design principles.

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

• Build Tools & Package Management: Familiarity with modern build tools (e.g., Vite, Rollup) and package management for library development (e.g., npm, pnpm workspaces).

• Communication & Influence: Excellent communication, interpersonal, and stakeholder management skills with the ability to influence technical direction and advocate for design system adoption.

Preferred Skills:

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

• Animation & Micro-interactions: Knowledge of animation libraries and implementation of micro-interactions for enhanced user experiences.

• Monorepo & CI/CD: Experience with monorepo tooling (e.g., Nx, Turborepo) and CI/CD pipelines for component libraries.

• Versioning & Release Management: Understanding of semantic versioning, changelog management, and library release processes.

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

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

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

📝 Enhancement Note: The required skills list is heavily weighted towards technical proficiency in React, modern CSS, and design system tooling, reflecting the core function of the role. The preferred skills indicate areas of desirable breadth and depth that would further enhance a candidate's impact, such as experience with monorepos, CI/CD, and design tooling integrations. The emphasis on "accessibility" and "inclusive design principles" is a critical requirement, aligning with modern best practices for enterprise-level software development.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Design System Case Studies: Showcase detailed case studies of design systems or component libraries you have architected, developed, or significantly contributed to. Highlight the problem statement, your approach, the technologies used, and the impact achieved.

• Component Library Examples: Provide examples of reusable UI components you have built, demonstrating code quality, documentation, and adherence to design principles and accessibility standards.

• Process Optimization Examples: Illustrate instances where you improved development workflows, adopted new tools, or implemented processes that increased efficiency, consistency, or adoption rates for UI components or design systems.

• Leadership & Collaboration Evidence: Include examples demonstrating your ability to lead engineering teams, mentor junior engineers, and collaborate effectively with cross-functional stakeholders (designers, product managers, platform engineers).

Process Documentation:

• Workflow Design & Optimization: Demonstrate experience in designing and documenting efficient workflows for component development, testing, and release within a design system context.

• Implementation & Automation: Showcase your ability to implement and automate processes related to component building, documentation generation (e.g., Storybook), visual regression testing, and accessibility audits.

• Measurement & Performance Analysis: Provide examples of how you have defined metrics to measure the success and adoption of a design system or component library, and how you have used this data to inform future development and improvements.

📝 Enhancement Note: For a Senior UI Engineer/Team Lead role focused on design systems, the portfolio should not only showcase technical output but also strategic thinking, leadership, and process improvement. The emphasis is on demonstrating the ability to build and scale a foundational UI framework, manage its lifecycle, and drive adoption through effective collaboration and process optimization.

💵 Compensation & Benefits

Salary Range: Kč 1,884,000.00 - Kč 2,301,000.00 (Annual)

Benefits:

• Incentive Award: Eligibility for an incentive award, providing potential for performance-based bonuses.

• Competitive Country-Specific Benefits: Access to a suite of benefits tailored to the Czech Republic, which may include comprehensive health insurance, retirement contributions, paid time off, and other local perks.

• Professional Development: Opportunities for continuous learning, skill enhancement, and potential certifications.

• Collaborative Work Environment: Access to a modern office space designed for collaboration and innovation.

Working Hours: 40 hours per week (standard full-time)

📝 Enhancement Note: The salary range provided is specific to Prague, Czechia. To estimate this range, standard industry benchmarks for Senior UI Engineers with leadership responsibilities in major European tech hubs were considered, adjusted for the Czech market's cost of living and salary scales. The inclusion of "Incentive award" and "Competitive country-specific benefits" suggests a robust total compensation package beyond base salary, common for senior roles at large financial institutions.

🎯 Team & Company Context

🏢 Company Culture

Industry: Financial Services (Banking)

Company Size: Large Enterprise (Barclays is a global financial services group with tens of thousands of employees worldwide).

Founded: 1836 (Barclays has a long and established history).

Team Structure:

• The role is within the "Digital Experience Platform" team, which is part of Barclays' broader technology organization.

• This team likely comprises specialized engineers (UI, Frontend, Platform) focused on building and maintaining core digital infrastructure.

• The Senior UI Engineer - Design Systems Team Lead will report to a higher-level engineering manager or director and will lead a team of UI engineers.

• Cross-functional collaboration is expected with product managers, UX/UI designers, and other engineering teams across various business units. Methodology:

• Data-Driven Decision Making: Barclays, like most large financial institutions, relies on data analysis for strategic decisions, risk management, and performance tracking. This applies to technology development as well.

• Agile Methodologies: It's highly probable that Agile frameworks (Scrum, Kanban) are utilized for software development to ensure iterative progress, flexibility, and efficient delivery.

• Process Optimization & Automation: Given the focus on design systems and efficiency, emphasis will be placed on automating development workflows, testing, and deployment processes.

• Risk & Control Focus: As a financial institution, Barclays places a high priority on risk management, security, and regulatory compliance. Engineering practices will reflect these stringent requirements.

Company Website: https://home.barclays/

📝 Enhancement Note: Barclays' status as a global financial institution implies a culture that balances innovation with robust control and risk management. The "Digital Experience Platform" team's role is critical for modernizing customer interfaces while adhering to strict industry standards. The company's long history suggests a stable yet evolving environment.

📈 Career & Growth Analysis

Operations Career Level: Senior Individual Contributor / Team Lead. This role sits at a senior individual contributor level with added leadership responsibilities. It is a crucial stepping stone for individuals looking to grow into Engineering Management or Principal Engineer roles.

Reporting Structure: The role reports into a management layer within the Digital Experience Platform or a broader Engineering department. The Team Lead directly manages a team of UI engineers.

Operations Impact: The Design Systems Team Lead has a significant impact on engineering velocity, product consistency, and user experience across all digital applications powered by the design system. By establishing robust, reusable components and patterns, this role directly contributes to faster development cycles, reduced technical debt, and a more cohesive brand identity.

Growth Opportunities:

• Engineering Management: Transition into a formal Engineering Manager role, with broader team responsibilities and strategic oversight.

• Principal Engineer / Staff Engineer: Specialize further as a Principal or Staff Engineer, focusing on deep technical architecture, innovation, and setting technical direction across multiple teams or departments.

• Cross-Functional Leadership: Move into product management, program management, or architecture roles that leverage design system expertise.

• Specialization: Deepen expertise in areas like accessibility, performance optimization, or advanced frontend architecture.

• Mentorship & Training: Develop strong leadership and coaching skills, becoming a key resource for talent development within Barclays.

📝 Enhancement Note: The role offers a clear path for growth, either into people management or senior technical leadership. The impact is substantial, affecting how thousands of developers build user interfaces, directly influencing product quality and delivery speed. This is a strategic role for someone who wants to influence engineering at a foundational level.

🌐 Work Environment

Office Type: Modern corporate office environment located in Prague, Czechia.

Office Location(s): Gemini Building A, Prague. This suggests a well-equipped, contemporary workspace designed for collaboration and productivity.

Workspace Context:

• Collaborative Spaces: The environment likely includes open-plan areas, meeting rooms, and potentially dedicated quiet zones to support diverse work needs.

• Technology & Tools: Access to standard corporate IT infrastructure, high-speed internet, and the necessary software licenses for development and collaboration tools.

• Team Interaction: Frequent opportunities for in-person collaboration with the immediate UI engineering team, designers, product managers, and other technology colleagues within the Prague office and potentially globally via video conferencing.

Work Schedule: The standard working hours are 40 hours per week, typical for a full-time role. While on-site, there's often an expectation of flexibility to accommodate project deadlines and collaborative needs, but the primary expectation is presence in the office.

📝 Enhancement Note: The on-site requirement in Prague's Gemini Building A indicates a preference for in-person collaboration, essential for team leadership, design system alignment, and fostering a strong team culture. This environment is designed to facilitate both focused individual work and dynamic team interaction.

📄 Application & Portfolio Review Process

Interview Process:

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

• Technical Interview (Coding & System Design): Assess proficiency in React, TypeScript, CSS, and ability to architect scalable frontend solutions and component libraries. Expect live coding exercises and system design discussions related to design systems.

• Team Lead / Manager Interview: Focus on leadership experience, team management, mentoring skills, and strategic thinking. Discuss how you build and lead high-performing teams.

• Cross-Functional Stakeholder Interviews: Interviews with Product Managers and Designers to assess collaboration skills, ability to translate requirements, and understanding of design system adoption challenges.

• Final Interview (Senior Leadership): Discussion with senior engineering leadership to evaluate overall fit, strategic vision, and potential impact on the organization.

Portfolio Review Tips:

• Curate Strategically: Select 2-3 of your strongest projects that best demonstrate your leadership, design system expertise, and technical skills.

Prioritize projects with clear impact metrics.

• Structure Case Studies: For each project, clearly articulate:

  • The Problem: What challenge did the design system or component library address?
  • Your Role & Responsibilities: Detail your specific contributions and leadership.
  • The Solution: Describe the architecture, technologies, and processes you implemented.
  • Key Features: Highlight innovative components or system aspects.
  • Impact & Results: Quantify achievements (e.g., % reduction in development time, consistency improvements, adoption rates, accessibility compliance).

• Code Samples: Be prepared to showcase well-documented, high-quality code samples, ideally from a public repository or anonymized private work. Focus on clarity, efficiency, and adherence to best practices.

• Storytelling: Present your portfolio as a narrative. Explain the "why" behind your decisions and how your work solved business problems and contributed to engineering efficiency.

Challenge Preparation:

• Design System Design Challenge: You might be asked to design a specific component or a small set of components, outlining APIs, states, accessibility considerations, and documentation.

• Code Refactoring/Improvement: Given a piece of existing UI code, you may be asked to refactor it for better performance, accessibility, or maintainability within a design system context.

• Leadership Scenario: Be ready to discuss how you would handle common team challenges, such as low adoption of the design system, conflicts within the team, or prioritizing competing feature requests.

• Technical Deep Dive: Prepare to discuss advanced topics like CSS architecture, performance optimization techniques for component libraries, or strategies for managing semantic versioning and releases.

📝 Enhancement Note: The interview process is designed to assess technical depth, leadership capability, and strategic thinking. A strong portfolio that clearly demonstrates impact and leadership in design systems is paramount. Candidates should be prepared to discuss not just what they built, but why and how it delivered value, and how they led teams to achieve it.

🛠 Tools & Technology Stack

Primary Tools:

• Frontend Framework: React (Primary, extensive proficiency required).

• Languages: TypeScript (Primary), JavaScript, HTML, CSS.

• Component Library Development: Storybook (essential for documentation, development, and testing).

• CSS Methodologies: CSS-in-JS (e.g., Styled Components, Emotion), CSS Custom Properties, Utility-First CSS (e.g., Tailwind CSS).

• Design Tokens: Style Dictionary, Token Studio (or similar tooling for managing design tokens).

• Build Tools: Vite, Rollup (for efficient library bundling and development).

• Package Management: npm, pnpm (especially pnpm workspaces for monorepos).

Analytics & Reporting:

• Visual Regression Testing: Tools like Percy, Chromatic, or Jest-dom with snapshot testing for visual consistency.

• Accessibility Auditing: Axe-core, Lighthouse, WAVE (integrated into workflows).

CRM & Automation:

• Version Control: Git (GitHub, GitLab, Bitbucket).

• CI/CD: Jenkins, GitLab CI, GitHub Actions (for automating builds, tests, and releases).

• Monorepo Tooling (Preferred): Nx, Turborepo (for managing multiple packages within a single repository).

📝 Enhancement Note: The technology stack is heavily focused on modern JavaScript ecosystem tools for building robust and maintainable UI components and design systems. Proficiency in React and TypeScript is non-negotiable, with significant emphasis placed on tools that support the design system lifecycle, from development and documentation (Storybook) to testing and release.

👥 Team Culture & Values

Operations Values:

• Excellence: Striving for high-quality, performant, and accessible UI components and a well-maintained design system.

• Collaboration: Working closely with designers, product managers, and other engineering teams to ensure the design system meets diverse needs and is widely adopted.

• Innovation: Continuously exploring new technologies and methodologies to improve the design system and developer experience.

• Stewardship: Taking ownership of the design system's long-term health, scalability, and impact across Barclays.

• Integrity: Upholding high standards of technical delivery, documentation, and communication.

Collaboration Style:

• Cross-Functional Integration: Actively engaging with design and product teams to translate vision into technical reality and gather feedback for iterative improvements.

• Process Review & Feedback: Fostering an environment where team members are encouraged to provide and receive constructive feedback on code, processes, and system design.

• Knowledge Sharing: Promoting the sharing of best practices, new learnings, and challenges through internal documentation, team meetings, and potentially brown-bag sessions.

• Efficiency-Focused: A shared commitment to streamlining development processes, automating repetitive tasks, and enabling other teams to build faster and more consistently.

📝 Enhancement Note: The values and collaboration style align with a modern, forward-thinking engineering team within a large, established organization. The emphasis on "Excellence," "Collaboration," and "Stewardship" is particularly relevant for a role managing a foundational component library that impacts many teams.

⚡ Challenges & Growth Opportunities

Challenges:

• Driving Adoption: Convincing and enabling diverse engineering teams to adopt and consistently use the design system can be a significant challenge, requiring strong communication, support, and compelling value propositions.

• Maintaining Consistency at Scale: Ensuring the design system remains cohesive and manageable as the number of components and consuming applications grows requires robust governance and architectural foresight.

• Balancing Innovation with Stability: Introducing new technologies or patterns while maintaining backward compatibility and stability for existing applications is a delicate balancing act.

• Cross-Team Dependencies: Managing dependencies and alignment with multiple product teams, each with their own roadmaps and priorities.

Learning & Development Opportunities:

• Advanced Design System Architecture: Deepen expertise in scalable design system patterns, monorepo strategies, and advanced component architecture.

• Accessibility Leadership: Become a recognized expert and advocate for accessibility within the organization, potentially leading accessibility training initiatives.

• Technical Leadership: Develop leadership skills through managing a team, mentoring engineers, and contributing to broader technical strategy.

• Industry Best Practices: Stay current with evolving frontend technologies, design system trends, and developer experience tools through conferences, workshops, and continuous research.

• Cross-Disciplinary Exposure: Gain deeper insights into product management, UX design, and various business domains within Barclays through close collaboration.

📝 Enhancement Note: The challenges highlight the strategic and interpersonal aspects of the role, beyond just coding. The growth opportunities are geared towards developing a well-rounded senior technologist with both deep technical skills and strong leadership capabilities.

💡 Interview Preparation

Strategy Questions:

• "Describe your approach to architecting a scalable, versioned component library that serves multiple applications with varying needs. How do you handle API design and versioning?"

• "How would you foster adoption of a new design system across a large organization with diverse engineering teams? What strategies would you employ to overcome resistance?"

• "Imagine a scenario where a product team needs a component that deviates significantly from the design system. How would you handle this situation to maintain consistency while accommodating their needs?"

• "How do you measure the success and impact of a design system? What key metrics would you track, and how would you use that data to inform the roadmap?" Company & Culture Questions:

• "What do you know about Barclays' digital transformation efforts, and how do you see a design system contributing to that?"

• "How do you align your team's technical roadmap with broader business objectives and the company's strategic priorities?"

• "Describe your leadership philosophy. How do you motivate and develop engineers, especially in a remote or hybrid setting?"

• "How do you ensure accessibility and inclusivity are prioritized in your team's work and within the design system itself?" Portfolio Presentation Strategy:

• Start with Impact: Begin your presentation by clearly stating the business problem and the quantifiable impact your design system or component library delivered.

• Show, Don't Just Tell: Use live demos or well-crafted screenshots/recordings to showcase components, Storybook documentation, and the overall user experience.

• Highlight Leadership: Clearly articulate your role in leading the team, mentoring engineers, and collaborating with stakeholders. Use specific examples of how you influenced decisions or resolved conflicts.

• Focus on Process: Explain the development, testing, and release processes you established or improved. Emphasize automation and efficiency gains.

• Be Ready for Deep Dives: Be prepared to answer detailed technical questions about your chosen technologies, architectural decisions, and problem-solving approaches.

📝 Enhancement Note: Interview preparation should focus on demonstrating a blend of technical expertise, strategic leadership, and a deep understanding of the challenges and benefits of design systems in a large enterprise context. Candidates must be able to articulate their impact with data and showcase their ability to lead and influence.

📌 Application Steps

To apply for this operations position:

• Submit your application through the Barclays Careers portal via the provided link.

• Portfolio Customization: Tailor your resume and cover letter to highlight your experience with React, TypeScript, design systems, component libraries, and team leadership. Ensure your portfolio is readily accessible and showcases relevant projects with clear impact metrics and your leadership contributions.

• Resume Optimization: Integrate keywords from the job description naturally, such as "React," "TypeScript," "Design Systems," "Component Library," "Accessibility," "WCAG," "Storybook," "Team Lead," and "Stakeholder Management." Quantify achievements wherever possible.

• Interview Preparation: Practice articulating your experience using the STAR method (Situation, Task, Action, Result), especially for leadership and problem-solving questions. Prepare detailed examples for your portfolio presentation, focusing on the "why" and the impact of your work.

• Company Research: Familiarize yourself with Barclays' digital strategy, recent tech initiatives, and its commitment to innovation and customer experience. Understand the company's values and how they align with your own professional approach.

⚠️ 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.