HTML5 Banner Developer

What you'll do
- Build HTML5 banners that meet the latest specs and best practices, optimised for performance and file size
- Interpret a single design and adapt it across up to 10+ different sizes while respecting the original layout and composition
- Implement animation using Lottie, Rive or similar libraries, plus hand-coded motion where needed
- Compress and optimise video for banner contexts without sacrificing quality
- Deliver banner sets that comply with the specs of platforms such as Google Ads, AEM, Adform and common DSPs
- Switch between multiple parallel projects within a single day, against tight deadlines

What you bring
- Solid knowledge of the latest HTML5 specs and techniques (CSS3, vanilla JS, GSAP or equivalent)
- A strong design eye: you sense when a layout works or breaks on a new format, and you resolve it independently
- Demonstrable experience with video compression and optimisation
- Experience with Lottie, Rive or other animation libraries
- The ability to handle multiple small projects at the same time, or in one day, without losing composure
- Strong, proactive communication: you flag issues early and bring solutions, not just problems

Nice to have
- Experience with review and delivery workflows such as Filestage and AEM staging environments
- Knowledge of banner animation performance and optimising CPU and rendering load
- A feel for motion design and timing, not just the technical execution
- Working knowledge of a design tool like Figma to export and interpret assets correctly
- Comfortable with version control (Git)
- An eye for cross-browser and cross-device consistency


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