Publicis Sapient is a digital transformation partner helping established organizations get to their future, digitally-enabled state, both in the way they work and the way they serve their customers. We help unlock value through a start-up mindset and modern methods, fusing strategy, consulting and customer experience with agile engineering and problem-solving creativity. United by our core values and our purpose of helping people thrive in the brave pursuit of next, our 20,000+ people in 53 offices around the world combine experience across technology, data sciences, consulting and customer obsession to accelerate our clients’ businesses through designing the products and services their customers truly value. 

As a Senior Experience Technologist, you’ll be working as part of an agile team with other passionate, driven, and talented people, creating innovative solutions for our clients. Your primary responsibilities will include developing interactive web based, mobile, and/or desktop applications using Sapient as well as industry best practices to deliver high value and quality to Sapient clients. 

Our environment and culture foster growth and present exciting opportunities to hone your skills in the industries that we support, and in business problem solving.  You will be responsible for software from idea to code to test to operations.  You will make an impact on our clients directly through your work, and will see your ideas become reality.  You will build your technical skills, expand your collaborative methods, and grow your leadership talent. 

• 4-9 years experience 
• Excellent hands-on knowledge of HTML5, CSS3, JavaScript, CSS Modules / CSS in JS 
• Hands-on experience with Functional Programming (FP) 
• Hands-on experience working with Object Oriented JavaScript (OOJS), JavaScript - and practical uses in building complex interactive experiences, primarily with ECMAScript 2015+. You should be up-to-date with new specifications (different stages), and also, using transpilers like Babel to use features from all stages 
• Good understanding of creational and structural design patterns in JavaScript 
• Experience working with Single Page Applications (SPA) with universal rendering capabilities and or Microfrontends. 
• Solid understanding of React.js, its core principles - lifecycle methods, virtual DOM etc. and at least 6 – 12 months hands-on experience with the same 
• Understanding of one-way data flow and the Flux architecture. 
• Experience of implementing Security features in frontend applications, which includes adding the right security headers, CSP policies, protection against XSS  click jacking etc. 
• Understanding of different CSS architectures that go hand-in-hand with React.js application development. Pros and cons of component-level CSS vs global and where to apply each 
• Hands-on experience working with server-side JavaScript frameworks like Express, Koa, Hapi etc. (based on Node.js) for server side rendering and building APIs 
• Good understanding of REST APIs and Microservices. 
• Knowledge of Kubernetes configurations, Cloud technologies, Web & Application server setup is a plus 

• ​​​​​Comprehensive private healthcare covering pre-existing conditions
• Life insurance
• Dental insurance 
• 33 days holiday including bank holidays 
• Free and delicious coffee served by our very own in-house baristas