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Freelance Developer

Buenos Aires, Argentina

About WPP Production

We are WPP Production - the unified global production company that brings together all of WPP's content producers, studios and craft experts into one connected organisation. We combine world-class human craft with next generation technology to originate, design, and deliver multi-channel content systems at scale. Built for borderless collaboration and powered by deep craft expertise, we are the production engine designed for today's always on, AI driven marketing world.

About WPP

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. For more information, visit WPP.com.

The Role

We are looking for a Freelance Developer to join our team and help deliver high-quality, scalable digital advertising experiences. In this role, you will develop, implement, and optimize dynamic creative campaigns across multiple ad serving and DCO platforms. You will work closely with Account, Project Management, Creative, and Media teams to transform campaign strategies into technical solutions, ensuring flawless execution, quality assurance, and continuous improvement.

Responsibilities

Campaign Execution

  • Develop and maintain responsive HTML5/CSS3/JavaScript banners, animations (e.g., CSS and GSAP), and modular templates for Dynamic Creative Optimization (DCO).
  • Implement dynamic variables, business rules, and data feeds (CSV, JSON, XML, Google Sheets) to enable personalized campaigns at scale.
  • Prepare publication packages, including naming conventions, packaging, tags, clickTags, and polite loading implementation.
  • Upload and traffic creative assets and dynamic campaigns across DCO and ad serving platforms according to client technology stacks.

Collaboration & Operations

  • Partner with Account, Project Management, and Client teams, as well as media agencies, to translate addressable marketing strategies into clear technical requirements.
  • Support the definition of technical ways of working for new client accounts, including staging environments, repositories, and approval workflows.
  • Estimate development effort and timelines while proactively identifying technical risks and limitations.

Quality Assurance & Launch

  • Perform functional and visual QA across multiple creative variations, browsers, devices, and screen sizes.
  • Validate tracking integrations (click, impression, and interaction tracking), brand safety requirements, and platform compliance.
  • Provide QA documentation, including variation checklists, screenshots, and screen recordings when required.

Documentation & Technical Support

  • Create and maintain technical documentation, template functionality guides, and internal implementation documentation.
  • Provide technical support to Project Management and Creative teams during automation RFPs, including feasibility assessments, technical inputs, and scope definition.
  • Assist with the onboarding of new platforms and tools by supporting initial setup and proof-of-concept implementations.

Continuous Improvement

  • Promote and implement best practices for performance optimization, accessibility, naming conventions, and version control.
  • Contribute to the evaluation of new third-party advertising solutions across display, social, and video channels through proof-of-concept projects.

Qualifications

Required

  • 3–5 years of experience developing HTML5 banners and dynamic creative solutions for paid media campaigns.
  • Strong proficiency in HTML5, CSS3, and vanilla JavaScript, with experience using CSS and GSAP for animations, as well as sprite and video assets.
  • Hands-on experience with DCO and ad serving platforms such as Google Marketing Platform (Studio, Campaign Manager 360, Display & Video 360), Flashtalking, Sizmek, Celtra, or similar technologies.
  • Experience working with dynamic data feeds (CSV, JSON, XML), including field mapping, business rules, and data validation.
  • Experience performing cross-browser and cross-device QA, optimizing creative performance (including lazy/polite loading), and troubleshooting tags and tracking implementations.
  • Experience using version control systems (Git), project management tools (Jira, Asana, Trello), and design collaboration platforms (Figma, Adobe Creative Cloud).
  • Intermediate to advanced English proficiency, with the ability to read technical documentation and collaborate with global teams.

Preferred

  • Experience with social DCO platforms (e.g., Meta Creative Hub, Smartly or similar).
  • Familiarity with Connected TV (CTV), Online Video (OLV) specifications, and VAST/VPAID standards.
  • Experience with template systems, build tools (NPM), templating engines, and code quality tools such as linters.
  • Understanding of data layers, UTM tracking, measurement frameworks, and privacy regulations (GDPR, CCPA) as they relate to digital advertising creatives.

 

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Why work here: 
At WPP Production, you’ll help shape the future of content production at a truly global scale. We bring together world-class talent, cutting-edge studios, and advanced technology to solve some of the most complex creative and production challenges in the industry. You’ll work in a collaborative, borderless environment where craft excellence is valued, innovation is encouraged, and AI and next-generation tools are used to amplify not replace human creativity. With access to diverse projects, global career opportunities, and the backing of WPP’s unmatched network, this is a place where you can grow your skills, make real impact, and create work that performs for every audience, across every channel, at every moment.

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.

Data
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