Mirrai Careers

Creatives Web Developer

rtbhouse

Brazil Posted today
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Location: Brazil (Remote - Candidates from Brazil only) We Are: RTB House is a next-generation performance demand-side platform (DSP) that uses proprietary Deep Learning AI algorithms to help brands grow. The company is the market leader in driving performance using Deep Learning across the entire purchase funnel. Founded in 2012 and now operating in 90+ markets, RTB House has always been private-by-design. It embraces first-party advertising and a relentless approach to innovation. RTB House offers end-to-end Deep Learning-powered AdTech products and solutions to maximize conversion, drive new customer acquisition, create engagement, and fuel long-term demand for a global base of clients. In 2026, RTB House launched rtb.com, a self-service platform specifically designed to allow small and medium-sized businesses and agencies to deploy auto-built creatives and maximize performance on any budget. Why RTB House? Join our creative development team to build engaging digital advertising experiences for some of the world’s largest companies and globally recognised brands. This role combines front-end development with animation and visual craftsmanship, bringing designs to life through interactive HTML5 banners. You Will: * Develop and maintain HTML5 advertising banners using HTML, CSS and JavaScript. * Turn design mockups into polished, interactive creatives across multiple formats and sizes. * Create smooth animations and engaging visual effects using libraries such as GSAP. * Work with template engines such as EJS to build reusable templates and dynamic, data-driven creatives. * Use Adobe Photoshop to extract, adjust and optimise graphic assets for development. * Test and debug creatives to ensure visual quality, reliable functionality and compatibility across browsers and devices. * Collaborate with designers and an international team, contributing ideas and delivering projects on time. Desired Experience: * Practical experience with HTML, CSS and JavaScript, supported by examples of your work. * Working knowledge of Adobe Photoshop. * Experience creating web animations using GSAP or similar JavaScript libraries. * Familiarity with template engines, such as EJS, and an understanding of how to build reusable, dynamic templates. * Attention to detail and the ability to accurately translate designs into working creatives. * Good English communication skills and the ability to collaborate in an international environment. * A proactive approach to problem-solving, ownership of your work and a willingness to learn. We Offer: * Previous experience developing HTML5 banners or other digital advertising creatives. * Experience in graphic, web or motion design, with a good eye for composition, typography and animation. * Familiarity with Adobe Illustrator. * Experience using AI coding agents to support development, with the ability to review, understand and validate the generated code. Apply now! You don't need to tick every box to apply. If you are passionate about digital marketing, send us your CV, and we'll review it. Information for Applicants: Brazil

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