Senior UI Developer (React)

📍 Job Overview

Job Title: Senior UI Developer (React) Company: Capgemini Location: Atlanta, Georgia, United States Job Type: Full-Time Category: Software Development / Engineering (Frontend & Fullstack) Date Posted: August 28, 2025 Experience Level: Senior (6+ years) Remote Status: Remote OK

🚀 Role Summary

• Drive the end-to-end development of intuitive, responsive, and accessible user interfaces using React and TypeScript, focusing on high-quality, reusable component architecture.
• Lead the design and implementation of robust backend services and APIs leveraging .NET 6/8 and Entity Framework, with a strong emphasis on performance, scalability, and security.
• Foster collaboration across design, product, and backend engineering teams to ensure seamless integration and delivery of exceptional user experiences, adhering to industry best practices.
• Actively participate in and contribute to code reviews, unit testing, and CI/CD pipeline setup, promoting a culture of quality and continuous improvement within the development lifecycle.
• Mentor junior developers, sharing expertise in UI architecture and backend delivery to elevate team capabilities and drive project success.

📝 Enhancement Note: While the title is "Senior UI Developer," the responsibilities clearly indicate a full-stack requirement, including significant backend development with .NET and C#. This suggests the role is more accurately described as a Senior Fullstack Developer with a strong frontend specialization.

📈 Primary Responsibilities

• Spearhead the development of sophisticated, responsive, and accessible user interfaces utilizing React and TypeScript, translating wireframes and UX designs into high-quality, reusable components.
• Design, develop, and optimize backend services and RESTful APIs using .NET 6/8 and Entity Framework, ensuring high performance, scalability, and robust security measures.
• Implement and refine RESTful API consumption strategies and advanced state management techniques within the React frontend.
• Ensure consistent styling and cross-browser/device compatibility through meticulous CSS3, SASS/SCSS, and responsive design framework implementation.
• Collaborate closely with UI/UX designers, product owners, and backend engineers to deliver cohesive and seamless user experiences, ensuring alignment with business objectives and user needs.
• Champion best practices in UI architecture, backend delivery, and coding standards, actively participating in code reviews and providing constructive feedback.
• Drive the implementation and optimization of unit tests using Jest, React Testing Library, or XUnit to ensure code quality and application stability.
• Contribute to the setup and maintenance of CI/CD pipelines, facilitating efficient and reliable software delivery cycles.
• Mentor and guide junior developers, fostering their growth in both frontend and backend development skills and promoting a collaborative learning environment.
• Integrate security best practices, including OAuth 2.0 and JWT, for secure API consumption and data protection.

📝 Enhancement Note: The responsibilities highlight a leadership component, particularly in "leading the development" and "mentoring junior developers," reinforcing the "Senior" aspect of the role. The emphasis on translating UX designs and ensuring responsiveness points to a strong focus on user-centric development practices.

🎓 Skills & Qualifications

Education:

• Bachelor's or Master's degree in Computer Science, Engineering, or a closely related technical field.

Experience:

• A minimum of 6 years of progressive experience in frontend and full-stack development, with a proven track record of delivering complex web applications.
• Demonstrated leadership experience in UI architecture and backend delivery, showcasing the ability to guide technical decisions and project execution.

Required Skills:

• Expert-level proficiency in React and TypeScript, supported by a strong portfolio demonstrating complex UI work and component-based architecture.
• Solid hands-on experience with modern frontend technologies, including HTML5, CSS3, SASS/SCSS, and proficiency in implementing responsive design frameworks.
• Deep understanding and practical application of React Hooks, Context API, and component lifecycle management for efficient state handling and rendering.
• Strong, hands-on experience with C# and the .NET ecosystem, specifically .NET 6 (mandatory), with a preference for .NET 8 experience.
• Proven experience in designing, developing, and consuming RESTful APIs, understanding API best practices for integration.
• Proficiency in backend development patterns such as dependency injection, middleware implementation, and asynchronous programming principles.
• Familiarity with version control systems (Git), CI/CD principles and pipelines, and Agile development methodologies (Scrum, Kanban).
• Experience with unit testing frameworks like Jest, React Testing Library, or XUnit for ensuring code quality and application reliability.
• Exposure to security protocols such as OAuth 2.0 and JWT for secure API authentication and authorization.
• Foundational knowledge of microservices architecture and cloud-native design principles.

Preferred Skills:

• Experience with GraphQL for API development and consumption.
• Familiarity with cloud platforms such as Azure or AWS.
• Knowledge of containerization technologies like Docker.
• Experience with performance profiling and optimization tools for both frontend and backend.
• Understanding of accessibility standards (WCAG) and implementation practices.

📝 Enhancement Note: The requirement for "Expert-level proficiency in React and TypeScript" and "6 years of experience" clearly places this role at a senior level. The inclusion of .NET 6 mandatory and .NET 8 preferred indicates a need for developers comfortable with modern .NET frameworks. The breadth of required skills suggests a role that values both deep frontend expertise and solid backend capabilities.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase a diverse range of projects demonstrating expertise in building complex, scalable, and performant user interfaces with React and TypeScript.
• Include examples of responsive design implementation across various devices and screen sizes, highlighting adaptability and user experience consistency.
• Provide case studies that detail the process of translating UX/UI designs and wireframes into high-quality, reusable components, emphasizing architectural decisions.
• Present projects that involve significant backend integration, demonstrating proficiency in consuming and designing RESTful APIs with .NET and C#.
• Highlight projects where performance optimization, security implementation (e.g., OAuth 2.0, JWT), and accessibility standards were key considerations and successfully addressed.

Process Documentation:

• Demonstrate experience in documenting development processes, including workflow design for component creation, API integration strategies, and state management.
• Provide examples of test-driven development (TDD) or behavior-driven development (BDD) approaches, including unit testing strategies for both frontend and backend components.
• Illustrate understanding of CI/CD pipeline configurations and deployment processes, showcasing experience in automating build, test, and deployment stages.
• Showcase experience with version control workflows (e.g., Git branching strategies) and collaborative development practices within an Agile framework.

📝 Enhancement Note: For a Senior UI Developer with full-stack responsibilities, a portfolio should not only showcase finished products but also the thought process behind them. This includes architectural decisions, problem-solving approaches for complex UI challenges, API integration strategies, and the application of best practices in performance, security, and testing. Demonstrating experience with CI/CD and Agile methodologies is crucial for understanding their contribution to team processes.

💵 Compensation & Benefits

Salary Range:

• Based on industry benchmarks for a Senior UI Developer with 6+ years of experience in Atlanta, GA, the estimated salary range is typically between $110,000 - $150,000 annually. This range can vary based on the candidate's specific experience, skill set, and the final scope of responsibilities within Capgemini's projects.

Benefits:

• Comprehensive Healthcare: Includes medical, dental, vision, and mental health coverage, alongside broader well-being programs to support overall employee health.
• Financial Well-being: Offers robust programs such as 401(k) retirement plans with potential company matching and an Employee Share Ownership Plan (ESOP) to foster financial security and long-term investment.
• Work-Life Balance: Provides generous paid time off (PTO), paid holidays, and paid parental leave to support personal and family needs.
• Family Support: Includes family-building benefits such as adoption assistance, surrogacy support, and cryopreservation services.
• Social & Community Support: Offers benefits like subsidized back-up child/elder care, tutoring services, and access to Employee Resource Groups (ERGs) to foster a supportive community.
• Professional Development: Access to extensive mentoring, coaching, and learning programs designed to support continuous skill enhancement and career growth.
• Disaster Relief: Provisions for disaster relief support for employees facing unforeseen emergencies.

Working Hours:

• The role typically involves a standard 40-hour work week. Capgemini offers flexible work arrangements, allowing for potential adjustments to daily schedules to accommodate personal needs while ensuring project deliverables are met.

📝 Enhancement Note: The provided benefits list is quite comprehensive, indicating Capgemini's commitment to employee well-being and development. The salary estimate is based on general market data for senior-level software engineering roles in a major metropolitan area like Atlanta, considering the specified experience level and technology stack.

🎯 Team & Company Context

🏢 Company Culture

Industry: Information Technology & Services, Consulting. Capgemini is a global leader in consulting, digital transformation, technology, and engineering services, operating at the forefront of innovation to help clients navigate their dual transition towards a digital and sustainable future.

Company Size: Global presence with approximately 340,000 employees across more than 50 countries. This large scale offers opportunities for diverse project involvement and global collaboration but may also mean navigating larger organizational structures.

Founded: Capgemini has a strong heritage of over 55 years, indicating a stable and established organization with deep industry experience and a proven track record in technology and business transformation.

Team Structure:

• As part of a large global consultancy, the specific team structure will likely vary by client project. Typically, development teams are cross-functional, comprising UI/UX designers, frontend developers, backend developers, QA engineers, project managers, and business analysts.
• Reporting structures will likely involve a technical lead or project manager, with potential for matrixed reporting depending on client engagement models.
• Cross-functional collaboration is a cornerstone of Capgemini's consulting model, requiring seamless interaction with client teams, product owners, and internal Capgemini specialists.

Methodology:

• Capgemini emphasizes a data-driven approach to problem-solving and project execution, leveraging analytics to inform decisions and measure impact.
• Workflow planning and optimization are integral to their consulting services, aiming to improve efficiency and deliver tangible business value for clients.
• The company actively embraces automation and embraces modern technology stacks to enhance service delivery and client outcomes.

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

📝 Enhancement Note: Capgemini's position as a global consultancy implies a dynamic work environment where developers might work across various client projects, requiring adaptability and a broad understanding of different business needs and technologies. The company's focus on "dual transition" (digital and sustainable) suggests an emphasis on modern, forward-thinking solutions.

📈 Career & Growth Analysis

Operations Career Level: Senior Fullstack Developer (with a UI specialization). This level implies a high degree of technical autonomy, responsibility for complex feature development, and a significant role in architectural decision-making for specific modules or projects. It also involves mentoring junior team members and contributing to the overall technical strategy.

Reporting Structure: The Senior UI Developer will likely report to a Technical Lead, Project Manager, or a specific Engineering Manager within Capgemini's project delivery framework. They will also collaborate closely with product owners and client stakeholders.

Operations Impact: This role directly impacts the user experience and functionality of client applications. By developing high-quality, performant, and intuitive interfaces, and robust backend services, the developer contributes to client satisfaction, operational efficiency, and the successful achievement of business objectives. Their work can influence user adoption, conversion rates, and overall product success.

Growth Opportunities:

• Technical Specialization: Deepen expertise in React, .NET, cloud technologies, or specific areas like UI architecture, performance optimization, or microservices.
• Leadership Development: Progress into roles such as Tech Lead, Solution Architect, or Engineering Manager, taking on greater responsibility for technical direction and team leadership.
• Cross-Functional Experience: Gain exposure to different industries and client challenges, broadening technical and business acumen.
• Certifications & Training: Opportunities for professional development through company-sponsored training, certifications in relevant technologies (e.g., cloud platforms, .NET), and participation in industry conferences.
• Client-Facing Roles: Develop skills in client communication, requirement gathering, and solution presentation, potentially moving into consulting or pre-sales roles.

📝 Enhancement Note: As a senior-level role within a large consultancy, growth paths are typically diverse, allowing for both deep technical specialization and broader leadership or consulting career trajectories. The emphasis on client projects means that gaining experience across different domains is a key aspect of career development.

🌐 Work Environment

Office Type: Capgemini operates with a hybrid model, offering flexibility. While this specific role is listed as "Remote OK," depending on client project requirements or team preferences, there might be occasions for on-site collaboration or client-facing meetings.

Office Location(s): While the primary location is listed as Atlanta, GA, Capgemini has a significant presence across the United States. Remote work offers flexibility, but candidates should be aware of potential client site visits or team meet-ups, which could be at various Capgemini offices or client locations.

Workspace Context:

• The work environment is expected to be collaborative, with a strong emphasis on teamwork and knowledge sharing, both within internal Capgemini teams and with client counterparts.
• Developers will have access to modern development tools and technologies as required by project needs, supported by Capgemini's IT infrastructure.
• Opportunities for interaction with diverse teams (design, product, backend, QA) will be frequent, fostering a dynamic and engaging work experience.

Work Schedule:

• The standard work schedule is typically 40 hours per week. The "Remote OK" status implies flexibility in daily working hours, allowing developers to manage their time effectively to meet project deadlines and personal needs, provided core collaboration hours are maintained.

📝 Enhancement Note: The "Remote OK" designation is a significant benefit, offering flexibility. However, as with many consulting roles, understanding potential client requirements for occasional on-site presence or travel is important. The emphasis on collaboration suggests a need for strong communication skills and proactive engagement with colleagues.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Typically involves an HR or recruiter call to assess basic qualifications, experience alignment, and cultural fit.
• Technical Assessment: May include a coding challenge (live or take-home) focusing on React, TypeScript, and potentially .NET concepts, or a technical screening interview with a senior engineer or team lead.
• Cross-functional / Team Interview: Interviews with potential team members and stakeholders to evaluate collaboration skills, problem-solving approaches, and understanding of the development lifecycle.
• Behavioral / Situational Interview: Focuses on assessing leadership qualities, mentoring experience, conflict resolution, and how candidates handle complex project scenarios.
• Final Interview: Often with a senior leader or hiring manager to discuss overall fit, career aspirations, and confirm suitability for the senior role.

Portfolio Review Tips:

• Curate Select Projects: Choose 3-4 of your strongest projects that best showcase your React, TypeScript, and .NET full-stack capabilities, as well as your leadership experience.
• Highlight Impact & Process: For each project, clearly articulate the problem statement, your role, the technical challenges faced, the solutions implemented (including architectural decisions), and the measurable outcomes or business impact. Focus on the "why" and "how" behind your technical choices.
• Demonstrate Key Skills: Ensure your portfolio clearly demonstrates your expertise in React (components, hooks, state management), TypeScript, responsive design, and backend integration with .NET. Include examples of API design/consumption and any security implementations.
• Showcase Reusability & Best Practices: Emphasize reusable component design, adherence to coding standards, and implementation of best practices in performance, security, and accessibility. If applicable, mention your contributions to CI/CD or testing frameworks.
• Prepare a Walkthrough: Be ready to present and discuss your portfolio projects in detail, articulating your thought process, technical decisions, and lessons learned.

Challenge Preparation:

• Coding Challenges: Practice common algorithm and data structure problems, with a specific focus on JavaScript/TypeScript challenges relevant to React development. Be prepared for questions on React lifecycle, state management patterns, and component composition.
• System Design: For a senior role, expect questions related to designing scalable UI architectures, API integrations, or even basic backend service design. Think about how you would approach building a complex feature from scratch.
• Behavioral Questions: Prepare STAR (Situation, Task, Action, Result) method responses for common behavioral questions related to teamwork, problem-solving, leadership, and handling difficult situations. Focus on examples showcasing your senior-level experience and mentoring capabilities.

📝 Enhancement Note: The interview process for a senior role at a consultancy like Capgemini will likely be rigorous, assessing not only technical prowess but also problem-solving abilities, communication, and cultural fit within project teams. A well-prepared portfolio is crucial for demonstrating the breadth and depth of experience expected at this level.

🛠 Tools & Technology Stack

Primary Tools:

• Frontend Framework: React (with Hooks, Context API), TypeScript.
• Styling: HTML5, CSS3, SASS/SCSS, responsive design frameworks (e.g., Bootstrap, Tailwind CSS, Material UI).
• Backend Language/Framework: C#, .NET 6 (mandatory), .NET 8 (preferred).
• Backend ORM/Data Access: Entity Framework.
• API Technologies: RESTful APIs, potentially familiarity with GraphQL.
• Version Control: Git (e.g., GitHub, GitLab, Bitbucket).

Analytics & Reporting:

• Testing Frameworks: Jest, React Testing Library (for frontend unit/integration testing), XUnit (for .NET unit testing).
• Performance Tools: Browser developer tools, potentially profiling tools for .NET applications.
• Monitoring Tools: Familiarity with application performance monitoring (APM) tools is a plus.

CRM & Automation:

• Integration Tools: Experience with integrating frontend applications with backend services and potentially understanding of middleware concepts.
• CI/CD Tools: Familiarity with CI/CD pipelines and tools like Azure DevOps, Jenkins, GitLab CI, or similar.
• Cloud Platforms: Exposure to cloud-native design principles suggests potential use of platforms like Azure or AWS.

📝 Enhancement Note: The technology stack is clearly defined, emphasizing modern web development practices. Proficiency in both React/TypeScript and .NET/C# is essential, highlighting the full-stack nature of the role. Familiarity with testing frameworks and CI/CD is critical for ensuring a smooth development and deployment process.

👥 Team Culture & Values

Operations Values:

• Excellence & Quality: A commitment to delivering high-quality, robust, and well-tested code that meets client requirements and exceeds expectations.
• Collaboration & Teamwork: Valuing open communication, knowledge sharing, and mutual support among team members to achieve collective goals.
• Innovation & Continuous Learning: Encouraging the adoption of new technologies, methodologies, and best practices to drive innovation and personal/professional growth.
• Client Focus: A dedication to understanding and addressing client needs, delivering solutions that provide tangible business value and drive successful outcomes.
• Efficiency & Best Practices: Promoting streamlined processes, optimized workflows, and adherence to industry standards to enhance productivity and code maintainability.

Collaboration Style:

• Cross-functional Integration: Proactive engagement with designers, product managers, backend engineers, and QA to ensure seamless integration of frontend components and backend services.
• Constructive Feedback Culture: Openness to providing and receiving feedback during code reviews and team discussions to collectively improve code quality and project delivery.
• Knowledge Sharing: Actively participating in sharing technical knowledge, best practices, and lessons learned through discussions, documentation, or internal presentations.

📝 Enhancement Note: Capgemini's culture is likely to be professional, results-oriented, and client-focused, reflecting its position as a global consulting firm. The emphasis on collaboration and continuous learning is typical for technology-driven organizations aiming to stay ahead in a rapidly evolving market.

⚡ Challenges & Growth Opportunities

Challenges:

• Adapting to Diverse Projects: As a consultant, the ability to quickly understand and adapt to new client environments, project requirements, and technology stacks can be a challenge.
• Balancing Frontend & Backend Demands: Effectively managing responsibilities across both sophisticated UI development and robust backend service implementation requires strong time management and context-switching skills.
• Staying Current with Technologies: The rapid pace of change in frontend frameworks and backend technologies necessitates continuous learning and skill updates.
• Stakeholder Management: Effectively communicating technical concepts and progress to both technical and non-technical stakeholders, including clients, requires strong interpersonal and presentation skills.

Learning & Development Opportunities:

• Advanced Skill Development: Opportunities to deepen expertise in specific areas like advanced React patterns, performance optimization, .NET Core architecture, cloud-native development, or microservices.
• Industry Exposure: Gaining broad experience across various industries and client challenges, which can broaden technical and business perspectives.
• Leadership Training: Access to formal training programs and on-the-job opportunities to develop leadership, mentoring, and project management skills.
• Certifications: Pursue certifications relevant to technologies used, such as cloud provider certifications (AWS, Azure) or advanced .NET certifications.

📝 Enhancement Note: The challenges presented are inherent to a senior consulting role, requiring adaptability and continuous learning. The growth opportunities are substantial, offering paths for both deep technical mastery and broader career progression within the consulting landscape.

💡 Interview Preparation

Strategy Questions:

• UI Architecture & Design: "Describe how you would approach designing a reusable component library for a large-scale React application. What are the key principles you follow?" Prepare to discuss component composition, state management strategies (Context API vs. Redux/Zustand), and theming.
• Backend Integration & API Design: "Walk me through a complex API integration you've implemented. What were the challenges, and how did you ensure efficiency and security?" Be ready to discuss RESTful principles, error handling, authentication (OAuth 2.0/JWT), and data serialization.
• Problem-Solving & Mentoring: "Describe a time you encountered a significant technical challenge in a project. How did you approach solving it, and what did you learn? How would you guide a junior developer through a similar problem?" Focus on your analytical process, collaborative approach, and mentoring style.

Company & Culture Questions:

• Capgemini's Approach: "How do you see your skills aligning with Capgemini's focus on digital and sustainable transformation?" Research Capgemini's recent projects and initiatives to tailor your response.
• Team Collaboration: "How do you ensure effective collaboration within a cross-functional team, especially when working remotely?" Prepare examples of your communication strategies and experience with collaborative tools.
• Impact Measurement: "How do you measure the success of your UI development work and its impact on the end-user or business goals?" Be ready to discuss metrics related to user experience, performance, and conversion.

Portfolio Presentation Strategy:

• Structure Your Narrative: For each project, clearly define the problem, your specific contributions, the technical stack and architectural decisions, the challenges overcome, and the measurable outcomes.
• Highlight Key Contributions: Emphasize your leadership in UI architecture and backend delivery, your experience with React, TypeScript, .NET, and API integration.
• Showcase Best Practices: Demonstrate your understanding and application of responsive design, accessibility, performance optimization, and security protocols.
• Be Ready for Deep Dives: Prepare to answer detailed technical questions about your code, design choices, and problem-solving methodologies.

📝 Enhancement Note: Interview preparation should focus on demonstrating not only technical proficiency but also leadership, problem-solving, and the ability to articulate complex technical concepts clearly. Tailoring responses to Capgemini's consulting context and emphasizing client value is key.

📌 Application Steps

To apply for this Senior UI Developer position:

• Submit your application through the Capgemini careers portal via the provided URL.
• Portfolio Customization: Tailor your resume and portfolio to highlight your most relevant projects and achievements, specifically focusing on your expertise in React, TypeScript, .NET, and full-stack development. Ensure your portfolio clearly demonstrates your leadership experience and ability to translate UX designs into functional, high-quality interfaces.
• Resume Optimization: Enhance your resume with keywords from the job description, such as "React," "TypeScript," ".NET 6," "C#," "REST APIs," "responsive design," and "full-stack development." Quantify your achievements whenever possible, showcasing the impact of your work.
• Interview Preparation: Practice answering common technical and behavioral questions, focusing on examples that demonstrate your senior-level experience, problem-solving skills, and mentoring capabilities. Prepare a clear and concise walkthrough of your portfolio projects.
• Company Research: Familiarize yourself with Capgemini's services, client successes, and company culture. Understand their focus on digital transformation and sustainability to better articulate your fit and enthusiasm for the role.

⚠️ 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.