**Job description** **:** Core Function The A/B Testing & Personalization Engineer focuses on implementing and optimizing web experiences through A/B testing and front-end development. This role works closely with multi-functional teams to deliver high-quality, data-driven solutions across our web, (React) and iOS platforms while having opportunities. **KEY RESPONSIBILITIES** **:** Development & Implementation * Build and optimize experiences in Monetate and Builder.io based on creative direction and strategy * Write and modify HTML, CSS, and JavaScript to create different site versions and enhance website behavior * Integrate various tools and data sources with Monetate and Builder.io * Debug cross-browser and cross-platform compatibility issues * Ensure variations don't conflict with existing site functionality across web and iOS platforms * Manage site performance across different versions and handle test scheduling and traffic routing * Implement and validate responsive behaviors for both web and iOS experiences Technical Strategy * Set up and maintain analytics integrations between Monetate, Builder, and GA4 * Assist with technical design and implementation of new audiences and targeting conditions * Collaborate with marketing and product teams on new insights and technical design strategy * Document technical implementations for team reference * Support basic prototyping needs for A/B test concepts **Required Skills:** * Minimum 5 years of front-end web development experience * Strong expertise in front-end technologies (JavaScript, HTML, CSS) * Proficiency with A/B testing tools (Monetate, Builder.io, or similar) * Experience with CMS tools like Builder.io * Advanced knowledge of Chrome DevTools and browser debugging * Experience implementing responsive designs across web and iOS platforms * Basic understanding of UX design principles * Strong problem-solving abilities and attention to detail * Superb communication skills for multi-functional teamwork Preferred Additional Expertise * Crafting advanced interactive prototypes for complex user flows and animations * Building and maintaining reusable component libraries aligned with design systems * Leading prototyping practices and establishing team workflows * Advanced UX design collaboration and concept validation * Experience with modern design tools (Figma, ProtoPie, Framer) * React development and component-based architecture * Design system architecture and maintenance * Sophisticated cross-platform responsive design patterns for web and iOS * iOS-specific optimization and performance tuning **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, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2023 global revenues of €22.5 billion. Get The Future You Want | www.capgemini.com **Disclaimer** Capgemini is an Equal Opportunity Employer encouraging diversity 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. Click the following link for more information on your rights as an Applicant http://www.capgemini.com/resources/equal-employment-opportunity-is-the-law 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. 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. **Job:** _Programmer/Analyst_ **Organization:** _NA APPS CAN INDUSTRIES_ **Title:** _Front-End Developer (Supporting A/B Testing)_ **Location:** _New York_ **Requisition ID:** _078203_