Senior React JS Developer - Lead at Capgemini Portugal

Chicago, Illinois, United States -

Full Time

Start Date

Immediate

Expiry Date

17 Feb, 26

Salary

0.0

Posted On

19 Nov, 25

Experience

10 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

React.js, JavaScript, TypeScript, Next.js, Frontend Architecture, Performance Optimization, Accessibility Standards, SEO Best Practices, Monorepo Management, CI/CD Pipelines, API Integration, Edge Computing, Custom SDKs, Digital Asset Management, Real-Time Personalization, Core Web Vitals

Industry

IT Services and IT Consulting

Description

About the job you’re considering Senior Frontend Engineer We are seeking a highly skilled Senior Frontend Engineer with deep expertise in React.js and modern frontend architecture to lead the design and implementation of scalable, high-performance web applications. This role combines hands-on engineering with technical leadership, driving innovation and excellence across the frontend stack. Your role • Architect and implement modular, scalable, and high-performance frontend solutions using JavaScript/TypeScript, React, and Next.js. • Design composable user experiences integrated with headless CMS, digital asset management (DAM) systems, and real-time personalization engines. • Lead initiatives to optimize Core Web Vitals, SEO, and WCAG 2.2+ accessibility compliance. • Drive observability through custom SDKs and performance monitoring tools. • Establish high-velocity engineering workflows using monorepos (e.g., Nx, TurboRepo), CI/CD automation, and AI-powered developer tools (e.g., GitHub Copilot, Cody). • Integrate secure, scalable APIs (GraphQL, REST, OAuth) and deliver edge-optimized experiences via Akamai EdgeWorkers and advanced caching strategies. Your skills and experience • 7+ years of experience in frontend development with a strong focus on React.js and modern JavaScript/TypeScript. • Proven experience designing and leading frontend architecture for large-scale applications. • Deep understanding of performance optimization, accessibility standards, and SEO best practices. • Hands-on experience with monorepo management, CI/CD pipelines, and developer productivity tooling. • Strong knowledge of API integration patterns and edge computing strategies. #LI-MS4 #LI-ONSITE Life at Capgemini Capgemini supports all aspects of your well-being throughout the changing stages of your life and career. For eligible employees, we offer: Flexible work Healthcare including dental, vision, mental health, and well-being programs Financial well-being programs such as 401(k) and Employee Share Ownership Plan Paid time off and paid holidays Paid parental leave Family building benefits like adoption assistance, surrogacy, and cryopreservation Social well-being benefits like subsidized back-up child/elder care and tutoring Mentoring, coaching and learning programs Employee Resource Groups Disaster Relief About Capgemini Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2024 global revenues of €22.1 billion. Get the future you want | www.capgemini.com Disclaimer Capgemini is an Equal Opportunity Employer encouraging inclusion in the workplace. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law. This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodations do not pose an undue hardship. Capgemini is committed to providing reasonable accommodations during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact. Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process. Click the following link for more information on your rights as an Applicant http://www.capgemini.com/resources/equal-employment-opportunity-is-the-law Applicants for employment in the US must have valid work authorization that does not now and/or will not in the future require sponsorship of a visa for employment authorization in the US by Capgemini.

Responsibilities

The Senior Frontend Engineer will architect and implement scalable, high-performance frontend solutions while leading initiatives to optimize web application performance and accessibility. This role requires a combination of hands-on engineering and technical leadership to drive innovation across the frontend stack.