Freelance Senior Front End Developer

Join to apply for the Freelance Senior Front End Developer role at Hogarth Hogarth is the Global Content Production Company. Part of WPP, Hogarth partners with one in every two of the world’s top 100 brands including Coca-Cola, Ford, Rolex, Nestlé, Mondelez and Dyson. With a breadth of experience across an extensive range of sectors, Hogarth offers the unrivaled ability to deliver relevant, engaging, and measurable content across all channels and media - both established and emerging. The number of channels at our fingertips; the need for speed; and the drive for mass personalisation, all mean that brands need different solutions. Our global team of over 7,500 craft and technology experts brings together creative, production and innovation to help clients navigate this exciting and ever-changing world of today’s content experience. WPP is the creative transformation company. We use the power of creativity to build better futures for our people, planet, clients and communities. Working at WPP means being part of a global network of more than 100,000 talented people dedicated to doing extraordinary work for our clients. We operate in over 100 countries, with corporate headquarters in New York, London and Singapore. WPP is a world leader in marketing services, with deep AI, data and technology capabilities, global presence and unrivalled creative talent. Our clients include many of the biggest companies and advertisers in the world, including approximately 300 of the Fortune Global 500. Our people are the key to our success. We’re committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. Role Requirements Expert knowledge of HTML, CSS-SASS, JavaScript, and associated web development/production tools. Strong experience maintaining and extending libraries using Vanilla JavaScript Proven experience using, actively building, and maintaining a mature, large-scale design system. Experience developing website global elements and custom shared libraries - video , analytics, gallery Experience building web experiences fully compliant with WCAG 2.2 AA Experience with templates and task automation including handlebars, NPM, Gulp and Vite Advanced knowledge of responsive web design Experience with translating comps and wireframes into flexible and usable code Experience implementing pixel perfect designs across a broad range of browsers and devices Experience using version control software (git) in multi-developer team Experience with developing large customer-facing websites Qualities & Characteristics 5+ years’ experience working as a front-end developer Desire to assist, guide and coach more junior team members. Excellent verbal and written communication skills, ability to articulate technical concepts to clients and non-technical colleagues Experience with web application development Thrives when facing new challenges in improving client deliverables Relentless attention to detail A passion for quality, receptive to feedback, and a desire to write code that produces a bug‑free user experience Wants to work in a process rich, quality driven organization. Our Hogarth Values Hands on No egos here. Just a shared drive to roll up our sleeves and make great things happen. Every project—big or small, gets our full energy because we believe in doing things right. Every single time. It’s how we deliver real results without cutting corners. Honesty We are real and authentic – with each other and in our work. Honest, direct communication builds the trust we need to collaborate, grow, and make meaningful things together. It’s not always easy but it’s always worth it. Heart & Soul We bring heart to everything we make. Passion, pride and relentless drive push us beyond “good enough” ––because we care deeply about our craft, and we’re always chasing better. We love what we do, and it shows. Happy Family Creating a space where everyone feels valued--even when opinions differ, makes this a supportive and inclusive environment for our people. We embrace our differences, celebrate our wins together, and never lose our sense of humor. Hungry Curiosity keeps us hungry. We question, experiment, and always seek out what’s next. We never settle, and we never stop learning. Inclusion and Impact WPP is an equal opportunity employer and considers applicants for all positions without discrimination or regard to particular characteristics. We are committed to fostering a culture of respect in which everyone feels they belong and has the same opportunities to progress in their careers. Please contact if you need the job advert or form in another format. We rely on legitimate interest as a legal basis for processing personal information under the GDPR for purposes of recruitment and applications for employment. When you click the "Submit Application" button at the bottom of this page, this will send all the information you have added to Hogarth WW. Before you do this, we think it’s a good idea to read through our Privacy statement. This explains what we do with your personal data when you apply for a role with us, and, how you can update the information you have provided us with or how to remove it. Seniority level Mid‑Senior level Employment type Full‑time Job function Advertising, Production, and Marketing Industries Media Production, Broadcast Media Production and Distribution, and Advertising Services #J-18808-Ljbffr